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LC-32D50U

SERVICE MANUALNo. S56T2LC32D50U

LCD COLOR TELEVISIONMODEL

LC-32D50U

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

CONTENTSSAFETY PRECAUTION IMPORTANT SERVICE SAFETY PRECAUTION ...........................................................i . PRECAUTIONS A PRENDRE LORS DE LA REPARATION ..............................................ii . Precautions for using lead-free solder ............. iii . CHAPTER 1. Specifications [1] Specifications ................................................ 1-1 . CHAPTER 2. Operation Manual [1] Operation Manual.......................................... 2-1 . CHAPTER 3. Dimensions [1] Dimensions ................................................... 3-1 . CHAPTER 4. REMOVING OF MAJOR PARTS [1] REMOVING OF MAJOR PARTS .................. 4-1 . CHAPTER 5. ADJUSTMENT PROCEDURE [1] ADJUSTMENT PROCEDURE ...................... 5-1 . CHAPTER 6. TROUBLESHOOTING TABLE [1] TROUBLESHOOTING TABLE...................... 6-1 . CHAPTER 7. MAJOR IC INFORMATIONS [1] MAJOR IC INFORMATIONS .........................7-1 CHAPTER 8. OVERALL WIRING/BLOCK DIAGRAM [1] OVERALL WIRING DIAGRAM ......................8-1 [2] SYSTEM BLOCK DIAGRAM .........................8-3 CHAPTER 9. PRINTED WIRING BOARD [1] PRINTED WIRING BOARD...........................9-1 CHAPTER 10. SCHEMATIC DIAGRAM [1] DESCRIPTION OF SCHEMATIC DIAGRAM..........................................................10-1 [2] MAIN Unit ....................................................10-2 [3] IF Unit ........................................................10-46 [4] LED Unit ....................................................10-50 [5] KEY Unit ....................................................10-51 [6] POWER SUPPLY Unit...............................10-52 PARTS GUIDE

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used for after sales service only. The contents are subject to change without notice.

LC-32D50ULC-32D50U

SAFETY PRECAUTIONIMPORTANT SERVICE SAFETY PRECAUTION

Service Manual

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

WARNING1. For continued safety, no modification of any circuit should be attempted.

Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor. Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.) Any reading of 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

2. Disconnect AC power before servicing.

CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE. F701 (8A, 125V) F4701, F5701 (3A~, 250V, 115 C)BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)Before returning the receiver to the user, perform the following safety checks: 3. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver. 4. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc. 5. To be sure that no shock hazard exists, check for leakage current in the following manner. Plug the AC cord directly into a 120 volt AC outlet. Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15F capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.

DVM AC SCALE1.5k ohm 10W

0.15 F TEST PROBE

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

SAFETY NOTICEMany electrical and mechanical parts in LCD color television have special safety-related characteristics. These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features are identified by " " and shaded areas in the Replacement Parts List and Schematic Diagrams. For continued protection, replacement parts must be identical to those used in the original circuit. The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards. ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

i

LC-32D50U PRECAUTIONS A PRENDRE LORS DE LA REPARATIONNe peut effectuer la rparation qu' un technicien spcialis qui s'est parfaitement accoutum toute vrification de scurit et aux conseils suivants.

AVERTISSEMENT6. N'entreprendre aucune modification de tout circuit. C'est dangereux.

7. Dbrancher le rcepteur avant toute rparation.

A l'aide de deux fils pinces, brancher une rsistance de 1.5 k 10 watts en parallle avec un condensateur de 0.15 F en srie avec toutes les pices mtalliques exposes du coffret et une terre connue comme une conduite lectrique ou une prise de terre branche la terre. Utiliser un voltmtre CA d'une sensibilit d'au moins 5000 /V pour mesurer la chute de tension en travers de la rsistance. Toucher avec la sonde d'essai les pices mtalliques exposes qui prsentent une voie de retour au chssis (antenne, coffret mtallique, tte des vis, arbres de commande et des boutons, cusson, etc.) et mesurer la chute de tension CA en-travers de la rsistance. Toutes les vrifications doivent tre refaites aprs avoir invers la fiche du cordon d'alimentation. (Si ncessaire, une prise d'adpatation non polarise peut tre utilise dans le but de terminer ces vrifications.) Tous les courants mesurs ne doivent pas dpasser 0.5 mA. Dans le cas contraire, il y a une possibilit de choc lectrique qui doit tre supprime avant de rndre le recepteur au client.

PRECAUTION: POUR LAPROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE

F701 (8A, 125V), F4701, F5701 (3A~, 250V, 115 C)VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUEAvant de rendre le rcepteur l'utilisateur, effectuer les vrifications suivantes. 8. Inspecter tous les faisceaux de cbles pour s'assurer que les fils ne soient pas pincs ou qu'un outil ne soit pas plac entre le chssis et les autres pices mtalliques du rcepteur. 9. Inspecter tous les dispositifs de protection comme les boutons de commande non-mtalliques, les isolants, le dos du coffret, les couvercles ou blindages de rglage et de compartiment, les rseaux de rsistancecapacit, les isolateurs mcaniques, etc. 10.S'assurer qu'il n'y ait pas de danger d'lectrocution en vrifiant la fuite de courant, de la facon suivante: Brancher le cordon d'alimentation directem-ent une prise de courant de 120V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

DVM ECHELLE CA1.5k ohm 10W

0.15 F SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

AVIS POUR LA SECURITEDe nombreuses pices, lectriques et mcaniques, dans les tlviseur ACL prsentent des caractristiques spciales relatives la scurit, qui ne sont souvent pas videntes vue. Le degr de protection ne peut pas tre ncessairement augmente en utilisant des pices de remplacement talonnes pour haute tension, puissance, etc. Les pices de remplacement qui prsentent ces caractristiques sont identifies dans ce manuel; les pices lectriques qui prsentent ces particularits sont identifies par la marque " " et hachures dans la liste des pices de remplacement et les diagrammes schmatiques. Pour assurer la protection, ces pices doivent tre identiques celles utilises dans le circuit d'origine. L'utilisation de pices qui n'ont pas les mmes caractristiques que les pices recommandes par l'usine, indiques dans ce manuel, peut provoquer des lectrocutions, incendies, radiations X ou autres accidents. ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

ii

LC-32D50U Precautions for using lead-free solderEmploying lead-free solder "PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder. Example:

LFaIndicates lead-free solder of tin, silver and copper.

L F a/aIndicates lead-free solder of tin, silver and copper.

Using lead-free wire solder When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks. As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition. Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it. When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

Be careful when replacing parts with polarity indication on the PWB silk. Part No, ZHNDAi123250E ZHNDAi126500E ZHNDAi12801KE J J J Description 0.3mm 250g(1roll) 0.6mm 500g(1roll) 1.0mm 1kg(1roll) Code BL BK BM

Lead-free wire solder for servicing

iii

LC-32D50ULC-32D50U

CHAPTER 1. Specifications[1] SpecificationsItem LCD panel Number of dots TV-standard TV Function Receiving Channel VHF/UHF CATV

Service Manual

Model: LC-32D50U 32" Advanced Super View & BLACK TFT LCD 3,147,264 dots (1366 x 768 x 3 dots) American TV Standard ATSC/NTSC System VHF 2-13ch, UHF 14-69ch 1-135ch (non-scrambled channel only)

Digital Terrestrial 2-69ch Broadcast (8VSB) Digital cable* 1-135ch (non-scrambled channel only) (64/256 QAM) Audio multiplex Backlight Audio out Terminals Rear INPUT1 INPUT2 INPUT3 INPUT4 INPUT5 Air ANTENNA Cable ANTENNA i.LINK OUTPUT OSD language Power Requirement Power Consumption Weight Dimension (W x H x D) Accessories Operating temperature w/o stand with stand w/o stand with stand BTSC System 60,000 hours (at Backlight Standard position) 10W x 2 AV in, COMPONENT in AV in, S-VIDEO in HDMI in with HDCP Audio in, HDMI in with HDCP Audio in, DVI-I in with HDCP 75 75 Unbalance, F Type for VHF/UHF/Digital Air in x 1 Unbalance, F Type for CATV/Digital Cable in x 1

IEEE1394 x 2 with DTCP (Compatible with DTVLink) Audio out English/French/Spanish AC 120 V, 60 Hz 178 W 39.7 lbs./18.0 kg 45.2 lbs./20.5 kg 321/ 16 x 239/ 32 x 457/ 64 inch 321/ 16 x 2541/ 64 x 121/ 64 inch Remote control unit(x 1), AC cord (x 1), AAA size battery (x 2), Cable clamp (x 1), Cable tie(x 1), Stand unit (x 1), Operation manual (x 1) +32F to +104F (0C to +40C)

DIGITAL AUDIO OUTPUT Optical Digital audio output x 1 (PCM/Dolby Digital)

* Emergency alert messages via Cable are unreceivable. As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.

11

LC-32D50U

Part namesPart names

LC-32D50U

TV (Front)TV (Rear)Channel buttons (CH / )

[1] Operation Manual

Volume buttons (VOL / ) INPUT button HDMI terminal (INPUT 3) HDMI terminal (INPUT 4) POWER button

DVI terminal (INPUT 5) i.LINK terminals

CHAPTER 2. Operation Manual

DIGITAL AUDIO OUTPUT terminal DVI AUDIO terminal (INPUT 5) AUDIO input terminals (INPUT 4)

21INPUT 2 terminals AUDIO OUTPUT terminals POWER indicator** OPC sensor* OPC indicator*

Service Manual

CABLE IN terminal AIR IN terminal RS-232C terminal

AC INPUT terminal

INPUT 1 terminals

Remote control sensor

NOTE *OPC: Optical Picture Control. **for TV status indicator.

Part names1

QUICK REFERENCEAttaching the stand Before attaching (or detaching) stand, unplug the AC cord from the AC INPUT terminal. Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being damaged.2 3 4

Remote control unit

1

17

2 3181. Short screws (x4) (used in step 2) 2 Long screws (x4) (used in step 3) Confirm the 8 screws supplied with the TV. 3. 1

CAUTION Attach the stand in the correct direction. The REAR label should be visible from the back of the TV. Refer to the figure. Incorrect installation of the stand may result in the TV falling over. Be sure to follow the instructions.

This side faces the rear.

REAR

419

5 6 7 8 9 10 11 12

Insert the stand into the opening on the bottom of the TV. Insert and tighten the 4 long screws into the 4 holes on the rear of the TV.Hex key2

52021 22 2318 17

62.

13 14 15 16

7 8 924 25 26Short screw

Attach the two parts of the stand unit to each other using the 4 short screws and the hex key (supplied with the product) as shown.

Long screw

10 11 122719 20 21 22

Soft cushion1

222829303123 24 25

Hex key NOTE To detach the stand, perform the steps in reverse order.

13

14

TV POWER: Switches the TV power on or enters standby mode. DISPLAY: Displays the channel information. SOURCE POWER: Turns the power of the external equipment on and off. External equipment operational buttons: Operates the external equipment. 0 9: Sets the channel. (DOT): AIR: Receives air signal. CABLE: Receives cable signal. VOL / : Sets the volume. SURROUND: Selects Surround settings. INFO: Displays the program information screen. FREEZE: Sets the still image. Press again to return to normal screen. EXIT: Turns off the menu screen. SLEEP: Sets the sleep timer. i.LINK: Displays the i.LINK control panel. AUDIO: Selects the MTS/SAP or the audio mode during multi-channel audio broadcasts. FUNCTION: Switches the remote control for TV, CBL/ SAT, VCR, DVD and AUDIO operation. Indicator lights up for the current mode. * To enter the code registration mode, you need to press FUNCTION and DISPLAY at the same time. LIGHT : When pressed all buttons on the remote control unit will light. The lighting will turn off if no operations are performed within about 5 seconds. This button is used for performing operations in low-light situations. VIEW MODE: Selects the screen size. ENT: Jumps to a channel after selecting with the 09 buttons. FLASHBACK: Returns to the previous channel or external input mode. INPUT: Selects a TV input source. (TV, INPUT 1, INPUT 2, INPUT 3, INPUT 4, INPUT 5, i.LINK) CH / : Selects the channel. MUTE: Mutes the sound. CH LIST: Displays the channel list screen.

15 32

16

26 MENU: Displays the menu screen. 27 / / / /ENTER: Selects a desired item on the screen. 28 RETURN: Returns to the previous menu screen. 29 FAVORITE CH A, B, C, D: Selects four preset favorite channels in four different categories. While watching, you can toggle the selected channels by pressing A, B, C and D 30 FAVORITE: Registers favorite channels. 31 CC: Displays captions from a closed-caption source. 32 AV MODE: Selects an audio or video setting. (AV mode: STANDARD, MOVIE, GAME, USER, DYNAMIC (Fixed), DYNAMIC. PC mode: STANDARD, MOVIE, GAME, USER, DYNAMIC (Fixed), DYNAMIC, PC)

LC-32D50U

NOTE When using the remote control unit, point it at the TV.

Basic adjustment settings

Menu items for TV/INPUT 1/INPUT 2Picture

Menu items for HDMI/DVI

LC-32D50U

Picture

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced Color Temp. Black 3D-Y/C Monochrome Film Mode Range of OPCAudio

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced Color Temp. Black Monochrome Film Mode Range of OPC

Audio

Treble Bass Balance SurroundPower Control

Treble Bass Balance Surround

Power Control

23Setup

No Signal Off No Operation Off

No Signal Off No Operation Off

Setup

EZ Setup CH Setup Antenna Setup-DIGITAL Input Skip Input Label Parental CTRL Position Picture Flip Standby Mode Language ResetOption

Input Skip Input Signal Auto Sync. Input Label Fine Sync. Position Picture Flip Standby Mode Language Reset

Option

Audio Only Digital Noise Reduction Input Select HDMI Setup Output Select Quick ShootDigital Setup

Audio Only Digital Noise Reduction Input Select Output Select Quick Shoot Color System Caption Setup Program Title Display Favorite CH i.LINK Setup

Digital Setup

Audio Setup i.LINK Setup

LC-32D50ULC-32D50U

CHAPTER 3. Dimensions[1] Dimensions

Service Manual

Unit: inch/(mm)

243/ 32 (612) 321/ 16 (814) 417/ 32 (115) 457/ 64 (124)

279/ 16 (700.0)239/ 32 (591)

2541/ 64 (651)

1535/ 64 (394.6)

77/ 8 (200)

153/ 4 (400)

121/ 64 (305)

417/ 32 (115)

77/ 8 (200)

31

LC-32D50U

Service CHAPTER 4. REMOVING OF MAJOR PARTSLC-32D50U

Manual

[1] REMOVING OF MAJOR PARTS1. Remove the SD Card Cover . 2. Remove the 4 lock screws 1 and detach the Stand Base Ass'y. 3. Remove the 9 lock screws 2 , 3 lock screws 3 and detach the Rear Cabinet.

2

SD-Card Cover

3

1

Rear Cabinet

Stand Base Ass'y

41

LC-32D50U4. Remove the 2 lock screws 4 and detach the Stand Assist Angle. 5. Remove the 4 lock screws 5 and detach the Center Angle-L and R. 6. Remove the 3 lock screws 6 and detach the Stand Cover. 7. Remove the 5 lock screws 7 and detach the Stand Fix Angle.

5

5

Center Angel-L Center Angel-R

Stand Fix Angle Stand Cover

7

6

Stand Assist Angle

4

42

LC-32D50U8. Disconnect the connectors 8 and 9 , and detach the Speaker L and R. 9. Disconnect the connectors CN7501 and CN7502. 10.Remove the 5 lock screws 10 and detach the MAIN Shield.

10

Main Shield

C N7501

C N7502

8SpeakerR

9Speaker L

43

LC-32D50UTop Cover Ass`y Key Unit

12

P 2002 P 2602 P 2601 P 2603 C oaxial C able S C 1102 S C 502 P 9701 P 9702 S C 1301 P 2704 S C 501 P 2703 C N5701 C N5702 C N5703 C N1 C N2

S C 1101

P 502

LED Unit

1111.Disconnect the connectors, (P2002, P2601, P2602, P2603, P9701, P9702, SC1102, SC1101, SC1301, CN1, CN2, P2703, P502, CN5701, CN5702, CN5703) and Remover the Coaxial Cable. 12.Remove the 2 lock screws11

and detach the LED Unit.12

13.Remove the KEY Unit and Remove the 3 lock screws

from the Top Cover Ass'y

44

LC-32D50U14.Remove the 4 lock screws 13 and detach the PWB Ass'y. 15.Remove the 7 lock screws14-1

, 2 lock screws

14-2

and detach the Jack Angle Long.

16.Remove the 5 lock screws 15 and detach the IF Unit. 17.Remove the 6 lock screws 16 and detach the POWER Supply Unit. 18.Remove the 5 lock screws 17 and detach the MAIN Unit.

17Main Unit

13

16Power Supply Unit

14-1 14-2

14-1

15

Chassis

Jack Angle Long IF Unit

45

LC-32D50U19.Remove the 6 lock screws 18 and Remove the 10 lock screws 19 and detach the Center Assist Angle and Rug Angles and LCD Panel Module.

19

18

19

Center Assist Angle

18

19

Rug Angle

19

18

18

19

46

LC-32D50U

Service CHAPTER 5. ADJUSTMENT PROCEDURELC-32D50U

Manual

[1] ADJUSTMENT PROCEDUREThe adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.

1. After replacement of any PWB unit and/or IC for repair, please note the following. When replacing the following units, make sure to prepare the new units loaded with updated software. MAIN Unit: DUNTKD640FM13 IF Unit: DUNTKD643FM13

2. Upgrading of each microprocessor softwareCaution: Never "POWER OFF" the unit when software upgrade is ongoing. Otherwise the system may be damaged beyond recovery.

2.1. Software version upgradeThe model employs the following software. Main software Monitor microprocessor software

The main software and the monitor microprocessor software can be upgraded by using a general-purpose SD memory card. The followings are the procedures for upgrading, explained separately for each of the main software, the monitor microprocessor software.

2.2. Main software version upgradeGet ready before you start SD memory card of 32MB or higher capacity PC running on Windows 98/98SE/ME/2000/XP operating system SD memory card reader/writer with USB connectivity. SD memory card formatting software (Downloadable at http://panasonic.jp/support/audio/sd/download/sd_formatter_e.html) Preparations To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start. Follow the steps below and create the SD card for version upgrade. 1. Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format]. (When you have the drive options, select the drive where the SD card is inserted before you proceed.)

51

LC-32D50U2. When the formatting is over, the following window appears. Click [OK].

3. Click [Exit] to finish the formatting. NOTE: When you are done, take out the SD card once to make sure it is finished, and then insert it again.

4. Copy the binary image file D50UAxxx.SDC (named temporarily) for version upgrade to the root directory (folder) of the SD card drive. NOTE: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files for version upgrade. Now the SD card for version upgrade is ready. How to upgrade the software 5. Shut off the AC power (i.e. unplug the AC cord). 6. Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from center at terminals, above S-VIDEO terminal in the rear of the unit, in a way that the cut corner of the SD card comes at the upper side. NOTE: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due care to insert the SD card correctly. 7. Turn on the AC power (i.e. plug in the AC cord). 8. After the unit startup, the system upgrade screen as shown below appears within 20-40 seconds.

SYSTEM UPGRADE Program 12% EEPROM Part Init OLD Version NEW Version U0601051 U0601241

M150

52

LC-32D50U9. Even a single failure in the process will trigger the upgrade failure screen as shown below. The word "NG" changes to red for the item failed. NOTE: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that the hardware is troubled.

UPGRADE FAILURE Program 24% EEPROM Part Init OLD Version NEW Version NG NG

U0601051 U0601241

10.Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this screen. The version information appears after the upgrade is complete.

UPGRADE SUCCESS Program 100% EEPROM Part Init Main Version NG NG

U0601241

11.Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade. 12.Now the software version upgrade is complete. NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the main software version information.

53

LC-32D50U2.3. Monitor microprocessor software version upgradeNOTE: If "Monitor version" in the process menu is "2.00M", the monitor microprocessor software can not be rewritten (because IC2002 has been replaced with the mask type). Get ready before you begin Get ready the same items as listed in the "Main software version upgrade". Preparation Create the SD card for monitor microprocessor software version upgrade in the same manner as explained in the "Main software version upgrade". Copy the binary image file M150Mxxx.SDC (named temporarily) for monitor microprocessor software version upgrade to the SD card drive. How to upgrade the software 1. Shut off the AC power to the unit (i.e. unplug the AC cord). 2. Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from center at terminals, above S-VIDEO terminal in the rear of the unit, in a way that the cut corner of the SD card comes at the upper side. NOTE: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due care to insert the SD card correctly. 3. Turn on the AC power (i.e. plug in the AC cord).

CAUTION: The moment this operation is done, the upgrading of the monitor microprocessor software starts. While the upgrade is ongoing, never power off the unit. Otherwise the upgrade will fail and the system may have a serious damage beyond recovery (inability to start). 4. After the unit startup, the system upgrade screen as shown below appears within 10-30 seconds.

MONITOR UPGRADE Program 12% NG

M150

OLD Version NEW Version

1.00 1.02

5. A failure in the process will trigger the upgrade failure screen. The word "NG" changes to red for the item failed. NOTE: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that the hardware is troubled. 6. Upon completion of the whole process,the upgrade success screen as shown below appears.You can check the new software version on this screen. The version information appears after the upgrade is complete. 7. Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade. 8. Now the software version upgrade is complete. NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the monitor microprocessor software version information.

2.4. Video signal adjustment procedure1) Image adjustment 1. Device check Before adjustment, make sure that the adjusting device and signal source are set for the Sharp LCD US. Signal generator level adjustment check (Adjustment to the specified level) Composite signal 15K component signal 33K component signal DVI-I (Analog RGB) signal : : : : 0.714Vp-p 0.02Vp-p (Pedestal to white level) 0.714Vp-p 0.02Vp-p (Pedestal to white level) 0.7Vp-p 0.02Vp-p 0.7Vp-p 0.02Vp-p (Pedestal to white level) 0.7Vp-p 0.02Vp-p 0.7Vp-p 0.02Vp-p (Pedestal to white level)

Y level PB, PR level Y level PB, PR level RGB level

: : : : :

54

LC-32D50U2. Entering the adjustment process mode Adjustment item Adjustment process mode Adjustment conditions Adjustment procedure Enter the process adjustment mode using the process adjustment remote control.

1

3. N358 composite signal / Tuner adjustment Adjustment item Adjustment Adjustment conditions N358 signal US-10ch Adjustment procedure Feed the N358 color bar signal (75% color saturation) to VIDEO 1 input. Feed the RF signal (by use of US-10ch) to TUNER.

1

[Video input signal]

[US-10CH]

75% color saturation

100% white2 Auto adjustment performance Page 3

100% white

Bring the cursor on [ [

N358 ALL ADJ] and press [ENTER].

N358 ALL ADJ FINISH] appears when finished.

4. Component 15K signal adjustment Adjustment item Adjustment Adjustment conditions 480i signal Adjustment procedure Feed the 100% color bar signal to VIDEO 1 component input.

1

480i 100% color bar signal


0% black


COMP 15K MAIN ADJ] and press [ENTER].

COMP 15K MAIN ADJ FINISH] appears when finished.

5. Component 33K signal adjustment Adjustment item Adjustment Adjustment conditions 1080i signal Adjustment procedure Feed the 100% color bar signal to VIDEO 1 component input.

1

1080i 100% color bar signal


0% black


HDTV ADJ] and press [ENTER].

HDTV ADJ FINISH] appears when finished.

55

LC-32D50U6. DVI-I (analog) signal adjustment Adjustment item Adjustment Adjustment conditions DVI-I (analog) signal: XGA (1024 x 768) 60Hz SYNC: HV separate Adjustment procedure Feed the XGA (100%) white 1/2 window to DVI-I (analog) .

1

1/4 1/2 1/4 1/4 1/2 1/4

100% White 0% Black

2

Auto adjustment performance


DVI ANALOG ADJ] and press [ENTER].

DVI ANALOG ADJ OK] appears when finished.

2.5. Adjustment of white balance1. White balance adjustment Adjustment item Setting Adjustment conditions Adjustment procedure 1) Apply the following settings to the set. AV MODE: [DYNAMIC] Backlight: +16 Aging Time: Min. 60 minutes 2) Connect a white balance adjustment jig and the set. [Adjustment method] 1) Send the monitor adjustment process code with the R/C. 2) Set the point 6 to the specified gradation. Set the strongest color as the fixed color and adjust RGB to the standard value by minus adjustment. 3) Set the point 5 to the specified gradation. Set the correction value of G [(Initial value of point 5) x (G value of point 6) / (Initial value of point 6)] and adjust RB to the standard value. 4) Set the point 4 to the specified gradation. Set the correction value of G [(Initial value of point 4) x (G value of point 6) / (Initial value of point 6)] and adjust RB to the standard value. 5) Set the point 3 to the specified gradation. Set the correction value of G [(Initial value of point 3) x (G value of point 6) / (Initial value of point 6)] and adjust RB to the standard value. 6) Set the point 2 to the specified gradation. Set the correction value of G [(Initial value of point 2) x (G value of point 6) / (Initial value of point 6)] and adjust RB to the standard value. 7) Set the point 1 to the specified gradation. Set the correction value of G [(Initial value of point 1) x (G value of point 6) / (Initial value of point 6)] and adjust RB to the standard value. 8) Write the adjustment values with the MSET0003 command and turn off AC power. * Initial value of each point: Set gradation level x 4 [Adjustment values] Conform to Standard set submitted by Engineering Department. [LC-32D50U] Teaching set [Adjustment standard values] Measuring device: [Minolta CA-210 ] technical measuring device Level 944 800 576 464 264 Standard value X=0.272 y=0.277 X=0.272 y=0.277 X=0.272 y=0.277 X=0.272 y=0.277 X=0.272 y=0.277 Adjustment spec 0.0012 0.0012 0.0012 0.0012 0.0012 Test spec 0.0020 0.0020 0.0020 0.0020 0.0020

1

2

Execution of auto adjustment

[Command] Process mode KRSW0001 KKT10037 Setting KYOF0000 OSDS0001 SBSL0016 Multipoint adjustment mode MSET0001 Adjustment value initialization MSET0004 Point 6 LEV60944 MG6G**** MG6B**** MG6R**** Point 5 LEV50800 MG5G**** MG5B**** MG5R**** Point 4 LEV40576 MG4G**** MG4B**** MG4R**** Point 3 LEV30464 MG3G**** MG3B**** MG3R****

Point 6 Point 5 Point 4 Point 3 Point 2

56

LC-32D50UAdjustment item Adjustment conditions Point 2 LEV20264 MG2G**** MG2B**** MG2R**** Point 1 LEV10200 MG1G**** MG1B**** MG1R**** Writing MSET0003 Point 1 Note 200 2 Adjustment procedure X=0.272 0.0020 y=0.277 Test conditions of the set: AV MODE: [DYNAMIC] (Reset) Monochro: ON Aging Time: Min. 60 minutes 0.0035

2.6. Key writing1. EDID writing (Main PWB: QPWBXD640WJZZ DVI input terminal/HDMI input terminal) Adjustment item DVI EDID writing Adjustment conditions File version check Adjustment procedure 1) Write the EDID data for DVI into IC1505 mounted on the main PWB with the checker. TL1514 I2C clock, TL1515 I2C data TL1516 5V, TL1517 GND TL1536 write protection (H: WP, Low: write enable) 1) Write the EDID data for HDMI into IC1501/IC1502 mounted on the main PWB with the checker. TL1508/1510 I2C clock, TL1509/1511 I2C data TL1512/1513 5V, TL1519/1518 GND TL1534/1535 write protection (H: WP, Low: write enable) 2) Perform data writing before the checker inspects HDMI. (If no data has been written, HDMI does not function.)

1

2

HDMI EDID writing

Inspection mode File version check

2. DTCP key writing Adjustment item DTCP key writing for i.Link Adjustment conditions File version check Adjustment procedure 1) Write the DTCP key into IC8453 mounted on the main PWB with the checker. Set TL8453(I2C EXT) to L. Connect TL8454(SCL)/TL8455(SDA) to the I2C bus. 2) Write the specified data into the specified address (A8). Use the second-generation DTCP device key. Conform to the internal key management agreement to manage the DTCP device key. Follow [DTCP device key operation check manual] to check operation. For the inspection or production, start in the process start mode or inspection start mode. For details, refer to [Precautions for production].

57

LC-32D50U3. Adjustment sequence (adjustment according to the G adjustment value of gradation 6) * Make sure the adjusting point gradations are correct since they are different for each model.

PC Set the light level to MAX with the light control command (SBSL0016 for 45). SBSL0016

Set

Setting is complete. OK Multipoint adjustment mode setting MSET0001 Multipoint adjustment mode is set. OK Initialize adjustment values. MSET0004 Initialization is done. OK Adjustment gradation setting (point 6 = 236 gradation adjustment*) LEV60944 Pattern display Adjustment values are set. OK Adjust RGB to the target xy values. MG6RXXXX MG6GXXXX MG6BXXXX * XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill). * In order to adjust by reducing the value, set the strongest color as the fixed color. * The default adjustment value of RGB is the parameter value of the LEV6 command multiplied by 2. The adjustment value is reflected in the image. Adjustment values are set. OK Adjustment gradation setting (point 5 = 200 gradation adjustment*) LEV50800 Pattern display Adjustment values are set. OK Correction of G value MG5GXXXX When G is changed at gradation 6, calculate the ratio of the change and set the following value to XXXX: (the value set with LEV5) x 2 x (the ratio). Adjustment values are set. OK

Repeat until RGB become the target values.

58

LC-32D50UPC Start measurement Adjust RB to the target xy values. MG5RXXXX MG5BXXXX * XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill). * G is fixed. * The default adjustment value of RGB is the parameter value of the LEV5 command multiplied by 2. The adjustment value is reflected in the image. Adjustment values are set. OK Adjustment gradation setting (point 4 = 144 gradation adjustment*) LEV40576 Pattern display Adjustment values are set. OK Correction of G value MG4GXXXX When G is changed at gradation 6, calculate the ratio of the change and set the following value to XXXX: (the value set with LEV4) x 2 x (the ratio). Adjustment values are set. OK Start measurement Adjust RB to the target xy values. MG4RXXXX MG4BXXXX * XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill). * G is fixed. * The default adjustment value of RGB is the parameter value of the LEV4 command multiplied by 2. The adjustment value is reflected in the image. Adjustment values are set. OK Adjustment gradation setting (point 3 = 116 gradation adjustment*) LEV30464 Pattern display Adjustment values are set. OK Correction of G value MG3GXXXX When G is changed at gradation 6, calculate the ratio of the change and set the following value to XXXX: (the value set with LEV3) x 2 x (the ratio). Adjustment values are set. OK Set



59

LC-32D50UPC Start measurement Adjust RB to the target xy values. MG3RXXXX MG3BXXXX * XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill). * G is fixed. * The default adjustment value of RGB is the parameter value of the LEV3 command multiplied by 2. The adjustment value is reflected in the image. Adjustment values are set. OK Adjustment gradation setting (point 2 = 66 gradation adjustment*) LEV20264 Pattern display Adjustment values are set. OK Correction of G value MG2GXXXX When G is changed at gradation 6, calculate the ratio of the change and set the following value to XXXX: (the value set with LEV2) x 2 x (the ratio). Adjustment values are set. OK Start measurement Adjust RB to the target xy values. MG2RXXXX MG2BXXXX * XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill). * G is fixed. * The default adjustment value of RGB is the parameter value of the LEV2 command multiplied by 2. The adjustment value is reflected in the image. Adjustment values are set. OK Adjustment gradation setting (point 1 = 50 gradation adjustment*) LEV10200 Pattern display Adjustment values are set. OK Correction of G value MG1GXXXX When G is changed at gradation 6, calculate the ratio of the change and set the following value to XXXX: (the value set with LEV1) x 2 x (the ratio). Adjustment values are set. OK Set



5 10

LC-32D50UPC Start measurement Adjust RB to the target xy values. MG1RXXXX MG1BXXXX * XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill). * G is fixed. * The default adjustment value of RGB is the parameter value of the LEV1 command multiplied by 2. The adjustment value is reflected in the image. Adjustment values are set. OK Writing of adjusted values MSET0003 Writing is complete. OK Deleting adjustment patterns MSET0000 Set


Deletion is complete. OK Completion of adjustment

2.7. Initialization to factory settingsAfter the shipping setting, pull off the AC cord. NOTE: Never turn on the power after the shipping setting. If power is turned on, perform the shipping setting again. Adjustment item Initialization Adjustment conditions It turns off with AC power supply. Adjustment procedure Place the cursor on the [INDUSTRY INIT] row, set "ON" with [+] or [-] of the [VOL] key, and press the [ENT] key. Version confirmation screen appears. [SUCCESS] on a green line indicates that the setting is successfully completed. (In case of an error, [ERROR] and an error code appear on a red line.) Turn off the AC power. 1. User setting 2. Channel data (e.g. broadcast frequencies) 3. Password data 4. Operation time 5. Auto installation flag 6. V-CHIP block setting

1

5 11

LC-32D50U2.8. Menu list in process A modePage 1 Line Item MAIN Version BOOT Version Monitor Version EQ DATA CHECKSUM TEMPERATURE LAMP ERROR NORMAL STANDBY CAUSE ERROR STANDBY CAUSE INDUSTRY INIT(+Cause) INDUSTRY INIT HOTELMODE Center Acutime RESET BacklightAcutime RESET LAMP ERROR RESET VIC XPOS VIC YPOS VIC COLOR VIC SIGNAL TYPE VIC READ 3 N358 ALL ADJ N358 MAIN ADJ TUNER DAC ADJ N358 MAIN CONTRAST TUNER A DAC TUNER VCHIP TEST(69ch) TUNER VCHIP TEST(7ch) TUNER VCHIP TEST(10ch) TUNER VCHIP TEST(15ch) COMP15K MAIN ADJ COMP15K MAIN CONTRAST HDTV ADJ CONTRAST Cb GAIN Cr GAIN HDTV Y OFFSET HDTV Cb OFFSET HDTV Cr OFFSET DVI ANALOG R CUTOFF G CUTOFF B CUTOFF R DRIVE G DRIVE B DRIVE MONITOR GAMMA IN 1 MONITOR GAMMA IN 2 MONITOR GAMMA IN 3 MONITOR GAMMA IN 4 MONITOR GAMMA IN 5 MONITOR GAMMA IN 6 GAMMA WRITE GAMMA RESET

Main microcomputer software version Monitor microcomputer software version Sound parameter checksum Read value of temperature sensor Number of lamp error Reasons of standby at normal time Reasons of standby in the event of error Initialization to factory settings(including clearing Sandby Cause data) Initialization to factory settings Activate/deactivate the hotel mode Main microcomputer operating time Reset main microcomputer operating time Lamp error rest Backlight lighting time Reset backlight lighting time x-coordinate for reading image data y-coordinate for reading image data Specification of color for reading image data Specification of signal for reading image data On/Off of image data read operation Auto adjustment of NTSC and TUNER signals Auto adjustment of NTSC signal Auto adjustment of TUNER NTSC contrast adjustment TUNER DAC adjustment Execute TUNER TEST

2

4

5

Auto adjustment of component 15k Component 15k contrast adjustment HDTV auto adjustment HDTV contrast adjustment HDTV CB gain adjustment HDTV CR gain adjustment HDTV Y offset adjustment HDTV CB offset adjustment HDTV CR offset adjustment DVI ANALOG adjustment R CUTOFF adjustment value G CUTOFF adjustment value B CUTOFF adjustment value R DRIVE adjustment value G DRIVE adjustment value B DRIVE adjustment value White balance adjustment IN-Point1 White balance adjustment IN-Point2 White balance adjustment IN-Point3 White balance adjustment IN-Point4 White balance adjustment IN-Point5 White balance adjustment IN-Point6 Write adjustment values Reset adjustment values

6

7

8

5 12

LC-32D50UPage 9 Line Item MONITOR GAMMA R 1 MONITOR GAMMA G 1 MONITOR GAMMA B 1 MONITOR GAMMA R 2 MONITOR GAMMA G 2 MONITOR GAMMA B 2 MONITOR GAMMA R 3 MONITOR GAMMA G 3 MONITOR GAMMA B 3 GAMMA WRITE GAMMA RESET MONITOR GAMMA R 4 MONITOR GAMMA G 4 MONITOR GAMMA B 4 MONITOR GAMMA R 5 MONITOR GAMMA G 5 MONITOR GAMMA B 5 MONITOR GAMMA R 6 MONITOR GAMMA G 6 MONITOR GAMMA B 6 GAMMA WRITE GAMMA RESET AUDIO SELECT INPUT_TRIM_SP INPUT_TRIM_HP CLIPPER_LEVEL ANGLE MASTER_VOLUME SCART_PRESCALE FM_AM_PRESCALE I2S1_PRESCALE SCART1_VOLUME SCART2_VOLUME AIN1_ADC_VOLUME AIN2_ADC_VOLUME AIN3_ADC_VOLUME AIN4_ADC_VOLUME AIN5_ADC_VOLUME AIN6_ADC_VOLUME SUB_VOLUME_SURROUND SUB_VOLUME_FLAT SUB_VOLUME_EQ SUB_VOLUME_HP SUB_VOLUME_HP_CENTER SP SUB_VOLUME_CENTERSP_ EQ SUB_VOLUME_CENTERSP_ FLAT BBE_HF_ADJUST BBE_LEVEL BBE_MACH3_F0 BBE_MACH3_Q BBE_MACH3_GAIN EQ_MODE PEQ1_F0 PEQ1_Q PEQ1_GAIN PEQ2_F0 PEQ2_Q White balance adjustment OUT R-Point1 White balance adjustment OUT G-Point1 White balance adjustment OUT B-Point1 White balance adjustment OUT R-Point2 White balance adjustment OUT G-Point2 White balance adjustment OUT B-Point2 White balance adjustment OUT R-Point3 White balance adjustment OUT G-Point3 White balance adjustment OUT B-Point3 Write adjustment values Reset adjustment values White balance adjustment OUT R-Point4 White balance adjustment OUT G-Point4 White balance adjustment OUT B-Point4 White balance adjustment OUT R-Point5 White balance adjustment OUT G-Point5 White balance adjustment OUT B-Point5 White balance adjustment OUT R-Point6 White balance adjustment OUT G-Point6 White balance adjustment OUT B-Point6 Write adjustment values Reset adjustment values Select sound parameter data(ROM/EEP)

10

11

12

13

14

5 13

LC-32D50UPage 14 Line PEQ2_GAIN PEQ3_F0 PEQ3_Q PEQ3_GAIN PEQ4_F0 PEQ4_Q PEQ4_GAIN PEQ5_F0 PEQ5_Q PEQ5_GAIN EALA_GAIN BRIGHTNESS DA0 BRIGHTNESS DA1 BRIGHTNESS DA2 BRIGHTNESS DA3 BRIGHTNESS DA4 BRIGHTNESS DA5 BRIGHTNESS DA6 BRIGHTNESS DA7 BRIGHTNESS DA8 BRIGHTNESS DA9 BRIGHTNESS DA10 BRIGHTNESS DA11 BRIGHTNESS DA12 BRIGHTNESS DA13 BRIGHTNESS DA14 BRIGHTNESS DA15 BRIGHTNESS DA16 BRIGHTNESS DA17 BRIGHTNESS DA18 BRIGHTNESS DA19 BRIGHTNESS DA20 BRIGHTNESS DA21 BRIGHTNESS DA22 BRIGHTNESS DA23 BRIGHTNESS DA24 BRIGHTNESS DA25 BRIGHTNESS DA26 BRIGHTNESS DA27 BRIGHTNESS DA28 BRIGHTNESS DA29 BRIGHTNESS DA30 BRIGHTNESS DA31 BRIGHTNESS DA32 OPC33 ADLEVEL 0 OPC33 ADLEVEL 1 OPC33 ADLEVEL 2 OPC33 ADLEVEL 3 OPC33 ADLEVEL 4 OPC33 ADLEVEL 5 OPC33 ADLEVEL 6 OPC33 ADLEVEL 7 OPC33 ADLEVEL 8 OPC33 ADLEVEL 9 OPC33 ADLEVEL 10 OPC33 ADLEVEL 11 OPC33 ADLEVEL 12 OPC33 ADLEVEL 13 Item

15

16

17

18

19

20

5 14

LC-32D50UPage 20 Line Item OPC33 ADLEVEL 14 OPC33 ADLEVEL 15 OPC33 ADLEVEL 16 OPC33 ADLEVEL 17 OPC33 ADLEVEL 18 OPC33 ADLEVEL 19 OPC33 ADLEVEL 20 OPC33 ADLEVEL 21 OPC33 ADLEVEL 22 OPC33 ADLEVEL 23 OPC33 ADLEVEL 24 OPC33 ADLEVEL 25 OPC33 ADLEVEL 26 OPC33 ADLEVEL 27 OPC33 ADLEVEL 28 OPC33 ADLEVEL 29 OPC33 ADLEVEL 30 OPC33 ADLEVEL 31 V6 OS THERMO 1 V6 OS THERMO 2 V6 OS THERMO 3 V6 OS THERMO 4 V6 OS THERMO 5 V6 OS THERMO 6 V6 OS THERMO 7 V5 OS THERMO 1 V5 OS THERMO 2 V5 OS THERMO 3 V5 OS THERMO 4 V5 OS THERMO 5 V5 OS THERMO 6 V5 OS THERMO 7 MONITOR TIME OUT MONITOR MAX TEMP MONITOR STANDBY CAUSE LCD TEST PATTERN KEY LOCK(1217) KOUTEI AREA ALL CLEAR A MODE AREA CLEAR BACKUP AREA CLEAR B MODE AREA CLEAR EXECUTION EEP SAVE EEP RECOVER STANDBY CAUSE RESET

21

22

23

24

25 26

27

2.9. Code list for Standby CauseCode 1 2 5 6 7 8 9 A B Indication RC_STNBY E_CCKMVT OUT_OF_R NO_OPERT NO_SIGNA PC_MODE1 PC_MODE2 SLEEP_TM E_NOMONI Description /* Standby set by remote control */ /* Abnormal voltage of CCKM line detected */ "/* While a PC display is on, unspecified input continued long time. */" /* Off caused by no operation */ /* Off caused by no signal */ /* Set by the PC power management mode 1 */ /* Set by the PC power management mode 2 */ /* Set by off timer */ /* Incompatible monitor is connected to the AVC center. */

5 15

LC-32D50UCode C E F 10 11 12 13 14 15 16 17 40 Indication OFF_232C AVC_TACT BSBOOKED E_AVCFAN E_BSSUBM E_CVICIC E_AVCTMP E_1BITAU E_MONIPW E_MONITR E_FNLOCK Description /* Set by the command from RS232C */ /* Set by the front switch at the AVC center */ /* The pre-set time has passed since TV was turned on from standby by the BS timer. */ /* Fan failure at the AVC center */ /* Communication failure with the BS sub microcomputer (Not used) */ /* CVIC failure */ /* Abnormal temperature at the AVC center */ /* 1Bit-AMP failure */ /* Monitor main power failure detected */ /* Monitor problem detected */ /* Fan lock for North America */ /* Failure in Digital Standby */

5 16

LC-32D50U

Service CHAPTER 6. TROUBLESHOOTING TABLELC-32D50U

Manual

[1] TROUBLESHOOTING TABLE

No power supply (Front LED does not light up) and no power-up even is turned on (Front LED light up to blue)

Is the AC cord connected?

NO

Connect the AC cord and turn on the power.

YES Are the harness and FFC connected properly?

NO

Connect the harness and FFC properly.

YES Are F701 normal? NO If the fuse is blown when turning on the power after replacing F701, replace VZ701, DS4701, F4701/F4702, F5701, Q4701/Q4702, Q5701, IC4701 and IC5701, then recheck.

YES Is the voltage of C4701/C4702/C4703 approx. 160V? YES Is BU5V supplied?

NO

Check if VZ701, R701, R702, R703 and DS4701 are normal.

NO Do the primary side and secondary side of T5701 oscillate normally? YES Are F5702, D5705, IC5706 and D5717 out of order? NO Are there defective parts on the primary side? Is the output on the secondary side short-circuited?

YES Are UR6V/UR10V/UR13V supplied?

NO

Does PS_ON (pin 1 of CN5702) become High (approx. 3.3V)?

YES Check the regulator circuit of UR6V, rectifier circuit of UR13V and DC/DC circuit of UR10V. YES Is 24V supplied? NO

NO Is the unit set to STANDBY MODE2? Is the main unit normal?

Do the primary side and secondary side of T4701 oscillate normally?

YES Are D4705/D4706 out of order?

NO Are there defective parts on the primary side? Is the output on the secondary side short-circuited?

YES Is PNL5V supplied? NO Does PNL_POW (pin 4 of CN5702) become High (approx. 3.3V)?

YES Turn on the power again, and check if the unit works normally. Remarks PS_ON State of the set MODE1 STDBY MODE2 Power ON (CN5702 High Low High1

Check the DC/DC circuit of PNL5V?

Is the main unit normal?

PNL_POW ) (CN5702 High Low High4

BU5V ) (CN5702 5V 5V 5V5

UR6V ) (CN5701 6V 6V1

)

UR10V (CN5701 7 ) 10V 10V

UR13V (CN5701 13V 13V11

PNL5V ) (CN5701 5V 5V3

24V ) (CN5703 24V 24V1

)

61

LC-32D50UNo audio output during UHF/VHF reception

Is Video output during UHF/VHF reception normal?

NO

Check the tuner and RF-SW (UNT 501)

YES Is SIF output from the tuner (TU1101_Pin3) normal?

NO

Check the tuner and peripheral circuits.

YES Is input signal fed to pin 21 (SOUNDIF 1) of IC1401 (SIF Demodulator) normal?

NO

Check the filter circuits (Q1144 and Q1102-3) and peripheral circuits.

YES Are audio signals from pins 29 and 30 (SC2_OUTL/R) of IC1401 to pins 51 and 52 of IC1403 (CODEC) normal?

NO

Check between pins 29 and 30 (SC2_OUTL/R) of IC1401 and pins 51 and 52 of IC1403 (CODEC).

YES Are audio outputs (A-OUT_L/R) of pins 38 and 39 of IC1403 normal?

NO

Are the LRCK, BICK, SDTO and SDTI signals sent from IC1403 to IC1406 (DSP) normally?

YES Check IC1403 and peripheral circuits. YES Is audio input from pins 38 and 39 of IC1403 to pins 11 and 15 of IC2701(STEREO_AMP) normal? NO Check the circuits between pins 38 and 39 of IC1403 and pins 11 and 15 of IC2701. (MUTE circuits: Q1306-8)

YES Is audio output from IC2701 normal?

NO

Check IC2701 and peripheral circuits.

YES Is the speaker switching circuit (T2701) YES Check the connector (P2703) of AV_UNIT and around the speakers. No monitor audio output

Is monitor audio output set to "Variable"?

YES

Reset monitor audio output to "Fixed".

NO Are audio output pins 40 and 41 of IC1403 (CODEC) normal?

NO


YES Are audio output pins 7 and 1 of IC1407 (Buffer_AMP) normal?

NO


YES Check between IC1407 and MONITOR OUTPUT terminal (pins 10 and 16 of J502).

62

LC-32D50UNo audio output from external input

Is L-ch audio signal fed from pin 12 of input terminal J501 to pin 53 of IC1403? Is R-ch audio signal fed from pin 18 of input terminal J501 to pin 54 of IC1403? Is L-ch audio signal fed from pin 10 of input terminal J501 to pin 57 of IC1403? Is R-ch audio signal fed from pin 16 of input terminal J501 to pin 58 of IC1403? [INPUT-3/INPUT4 (Digital audio mode)] Is digital audio signal (HDMI_SPDIF) fed from pin 70 of IC1508 to pin 2 of IC1401? [INPUT-4 (Analog audio mode)] Is L-ch audio signal fed from pin 3 of input terminal J1501 to pin 59 of IC1403? Is R-ch audio signal fed from pin 2 of input terminal J1501 to pin 60 of IC1403? Is L-ch audio signal fed from pin 2 of input terminal J1502 to pin 55 of IC1403? Is R-ch audio signal fed from pin3 of input terminal J1502 to pin 56 of IC1403? YES No audio output during digital broadcasting reception

Are the I2S signals MCLK, SCLK, LRCK, and DATA sent from pins N22, N19, N21 and M20 of IC8101 (PH1) normally? YES Are input signals of pins 24 (MCLK), 11 (SCLK), 10 (LRCK), 32 (DATA) of IC1403 normal?

NO

Check around IC8101 PH1.

NO

Check the circuits between pins N22, N19, N21 and M20 of IC8101 PH1 and pins 24, 11, 10 and 32 of IC1403.

YES Are audio signals from pins 29 and 30 (SC2_OUTL/R) of IC1401 to pins 51 and 52 of IC1403 (CODEC) normal?

NO

Check between pins 29 and 30 (SC2_OUTL/R) of IC1401 and pins 51 and 52 of IC1403 (CODEC).

YES Are audio outputs (A-OUT_L/R) of pins 38 and 39 of IC1403 normal?

NO

Are the LRCK, BICK, SDTO and SDTI signals sent from IC1403 to IC1406 (DSP) normally?

YES Check IC1403 and peripheral circuits. YES Is audio input from pins 38 and 39 of IC1403 to pins 11 and 15 of IC2701(STEREO_AMP) normal? NO Check the circuits between pins 38 and 39 of IC1403 and pins 11 and 15 of IC2701. (MUTE circuits: Q1306-8)

YES Is audio output from IC2701 normal?

NO


YES Is the speaker switching circuit (T2701) YES Check the connector (P2703) of AV_UNIT and around the speakers.

63

LC-32D50U No video output (1)

No video output from external input

Select INPUT-1 and the input signal on the input switching menu screen. NO When INPUT-1 cannot be selected since the characters INPUT-1 on the menu screen are gray.

Is INPUT-1 selected on the input switching menu screen?

YES Is video signal fed to pin 65 of IC501 (AV SWITCH)? NO

Is the video signal detection function normal? Check between pin 5 of J501 and pin 70 of IC501. Check between pin 4 of J501 and pin 65 of IC501.

YES Is video signal sent to pin 60 of IC501?

NO

Check IC501 (AV SWITCH) and peripheral circuits.

YES Is video signal sent to pin 2 of IF_UNIT connector (FC_SC501)?

NO

Check between IC501 and SC501. (Q501, Q502, etc.)

YES Is video signal fed to pin 2 of MAIN_UNIT connector (FC_SC1101)?

NO

Check the board-to-board cable "FC".

YES Is video signal fed to pin 242 of IC3301 (Trident) via L.P.F. composed of Q2201 and Q2207?

NO

Check between IC501 and IC3301. (Q2201, Q2207, etc.)

YES Are digital video (LVDS) signals sent from pins 28-31 and 34-37 of IC3301?

NO


YES Check LCD_CONTROL PWB.

64



Select INPUT-2 and the input signal on the input switching menu screen. NO When INPUT-2 cannot be selected since the characters INPUT-3 on the menu


YES Is signal fed to each input terminal of IC501 (AV SWITCH)? Is video signal fed to pin 3 of IC501? Are Y and C signals fed to pins 5 and 7 of IC501 respectively?

Is the video signal detection function normal?Check between pin 2 of J501and pin 2 of IC501. Is the S-video signal detection function normal?Check between pin 6 of J503 and pin 6 of IC501. NO Check between pin 1 of J501 and pin 3 of IC501.

NO

Check between pins 3 and 4 of J503 and pins 5 and 7 of IC501.

YES Is video signal sent to pin 60 of IC501? Are Y and C signals sent to pins 60 and 59 of IC501 respectively? YES Is video signal sent to pin 2 of IF_UNIT connector (FC_SC501)? Are Y and C signals sent to pins 2 and 4 of IF_UNIT connector (FC_SC501) respectively? YES Is video signal fed to pin 2 of MAIN_UNIT connector (FC_SC1101)? Are Y and C signals fed to pins 2 and 4 of MAIN_UNIT connector (FD_SC1101) respectively? YES Is video signal fed to pin 242 of IC3301 (Trident) via L.P.F. composed of Q2201 and Q2207? Are Y and C signals fed to pins 242 and 231 of IC3301 (Trident) via L.P.F. composed of Q2201 and Q2207 and via L.P.F. composed of Q2205 and Q2209 respectively? YES Are digital video (LVDS) signals sent from pins 28-31 and 34-37 of IC3301?

NO

Check IC501 (AV SWITCH) and peripheral circuits.

NO

Check between IC501 and SC501. (Q501, Q502, Q503, Q504, etc.)

NO


NO

Check between SC1101and IC3301. (Q2201, Q2207, etc.)/ (Q2205, Q2209, etc.)

NO



65

LC-32D50UNo video output during digital broadcasting reception

Is video signal sent to output terminal pin 4 of tuner (TU1101)?

NO

Check or replace the tuner's peripheral circuits.

YES Is video signal fed to pin 7 of IC1103 (LEVEL ADJ)?

NO

Is control signal for level adjustment fed from pin 1 of IC1104 to pin 6 of IC1103?

NO Check or replace IC1104 (CONTROL) and peripheral circuits. YES Is video signal fed to pin 244 of IC3301 (Trident) via L.P.F. composed of Q2204 and Q2208? NO Check between IC1103 and IC3301. (Q2204 ,Q2208, etc.) YES Are digital video (LVDS) signals sent from pins 28-31 and 34-37 of IC3301? NO Check IC3301 and peripheral circuits.


66




NO

Select INPUT-1 and the input signal on the input switching menu screen. When INPUT-1 cannot be selected since the characters INPUT-1 on the menu screen are gray.

Is the component video signal detection function normal? Check between pin 8 of J501 and pin 38 of IC501. YES Are component video signals fed to pins 21, 23 and 25 (Y, PB and PR) of IC501(AV SWITCH)? NO Check between J1501 and each input pin of IC501.

YES Are Y, PB and PR signals sent to pins 60, 59 and 58 of IC501 respectively?

NO


YES Are component video signals sent to pins 2, 4 and 6 of IF_UNIT connector (FC_SC501)?

NO

Check between IC501 and SC501. (Q501-Q506, etc.)

YES Are component video signals fed to pins 2, 4 and 6 of MAIN_UNIT connector (FC_SC1101)?

NO


YES Are Y, Pb and Pr signals fed to pins 246, 232 and 225 of IC3301 (Trident) respectively?

NO

Check between SC1101 and IC3301. (Q2202, Q2203, Q2206, etc.)

YES Are digital video (LVDS) signals sent from pins 28-31 and 34-37 of IC3301?

NO



67

LC-32D50UNo video output from HDMI input (INPUT3) INPUT3 Are signals fed from HDMI (SC1501) connector to input terminals H_RX0 (pins 51 and 52), H_RX1 (pins 54 and 55), H_RX2 (pins 57 and 58) and H_RXC (pins 48 and 49) of IC1507 (TMDS_SW)?

NO

Is IC1501 (E2PROM) accessed with I2C when connecting HDMI device and is DDC_I2C_CLOCK/DATA data read out?

NO Check IC1501 and peripheral circuits. Are cables connected securely? YES Check the setting of HDMI device. YES Are signals fed from IC1507 (TMDS_SW) to input terminals H_RX0 (pins 54 and 55), H_RX1 (pins 58 and 59), H_RX2 (pins 61 and 62) and H_RXC (pins 50 and 51) of IC1508 (HDCP_LSI)? YES Are R/G/B and CLK/H/V/Data Enable signals sent from pins 9296, 99-105,108-111, 114-117, 121-124, 119 and 127-129 of IC1508(HDCP_LSI)? YES Are digital video (LVDS) signals sent from pins 28-31 and 34-37 of IC3301(Trident)? NO Check IC1507 (TMDS_SW) and peripheral circuits. For INPUT4, pin 21 is Low and pin 22 is High. For INPUT5, pins 21 and 22 are Low and pin

NO

Check IC1508 (HDCP_LSI) and peripheral circuits.

NO

Check peripheral circuits of IC3301.

YES Check LCD_CONTROL PWB. When using an old HDMI transmission device, some video formats cannot be selected or no sound is heard. Since this model conforms to the latest HDMI standard, the HDMI transmission device does not recognize the data of the latest version correctly. It is necessary to upgrade its firmware. Download the latest firmware from the website of each manufacturer, or contact the customer service center of each manufacturer.

68

LC-32D50UNo video output from HDMI input (INPUT4) INPUT4 Are signals fed from HDMI (SC1502) connector to input terminals H_RX0 (pins 70 and 71), H_RX1 (pins 73 and 74, H_RX2 (pins 76 and 77) and H_RXC (pins 67 and 68) of IC1507 (TMDS_SW)?

NO

Is IC1502 (E2PROM) accessed with I2C when connecting HDMI device and is DDC_I2C _CLOCK/DATA data read out?

NO Check IC1502 and peripheral circuits. Are cables connected securely? YES Check the setting of HDMI device. YES Are signals fed from IC1507 (TMDS_SW) to input terminals H_RX0 (pins 54 and 55), H_RX1 (pins 58 and 59), H_RX2 (pins 61 and 62) and H_RXC (pins 50 and 51) of IC1508 (HDCP_LSI)? YES Are R/G/B and CLK/H/V/Data Enable signals sent from pins 9296, 99-105,108-111, 114-117, 121-124, 119 and 127-129 of IC1508 (HDCP_LSI)? YES Are digital video (LVDS) signals sent from pins 28-31 and 34-37 of IC3301 (Trident)? NO Check IC1507 (TMDS_SW) and peripheral circuits. For INPUT4, pin 21 is Low and pin 22 is High. For INPUT5, pins 21 and 22 are Low and pin

NO


NO


YES Check LCD_CONTROL PWB. When using an old HDMI transmission device, some video formats cannot be selected or no sound is heard. Since this model conforms to the latest HDMI standard, the HDMI transmission device does not recognize the data of the latest version correctly. It is necessary to upgrade its firmware. Download the latest firmware from the website of each manufacturer, or contact the customer service center of each manufacturer.

69

LC-32D50UNo video output from DVI input (INPUT 5) DIGITAL mode Are signals fed from DVI (SC1503) connector to input terminals H_RX0 (pins 8 and 9), H_RX1 (pins 11 and 12), H_RX2 (pins 14 and 15) of IC1507 (TMDS-SW)? Analog mode Are signal fed from pins 25, 26, 27 (Analog-R/G/B), and 28, 8 (H Sync/V Sync) of input terminal (SC1503) to pins 226, 248, 233, 10, 11 of IC3301 (Video PROCESSOR)? YES NO Check peripheral circuits of IC3301.

NO

IS IC1505 (E2PROM) accessed with I2C when connecting HDMI device and is DDC_I2C_CLOCK/DATA data read out?

YES NO Check IC1505 and peripheral circuits.Are cable connected securely? Check the setting of DVI Device. YES Are signals fed from IC1507 (TMDS_SW) to input terminals H_RX0 (pins 54 and 55), H_RX1 (pins 58 and 59), H_RX2 (pins 61 and 62) and H_RXC (pins 50 and 51) of IC1508 (HDCP_LSI)? YES Are R/G/B and CLK/H/V/Data Enable signals sent from pins 92-96, 99-105,108-111, 114-117, 121-124, 119 and 127-129 of IC1508(HDCP_LSI)? YES Are digital video (LVDS) signals sent from pins 28-31 and 34-37 of IC3301 (Trident)? NO

Check LCD_CONTROL PWB.

Check IC1507 (TMDS_SW) and peripheral circuits.For INPUT4, pin 21 is Low and pin 22 is High.For INPUT5, pins 21 and 22 are Low and pin

NO


NO


YES Check LCD_CONTROL PWB. When using an old HDMI transmission device, some video formats cannot be selected or no sound is heard. Since this model conforms to the latest HDMI standard, the HDMI transmission device does not recognize the data of the latest version correctly. It is necessary to upgrade its firmware. Download the latest firmware from the website of each manufacturer, or contact the customer service center of each manufacturer. [ FRONT-END SECTION] Digital broadcasting cannot be received.

Are US_TS_CLK/PKTSYNC/DATA signal supplied to pin (51), (59), (66) of IC8601 respectively? YES Check the IC8101 and its peripheral circuits.

NO

Are IF_OUT_P/N signal send from pin (20), (21) of TU1101 respectively? NO Check the TU1101.

YES

Check IC8601 and its peripheral circuits.

6 10

LC-32D50U

LED flashing timing chart for error notification1sec

250ms

1) Red power LED Error type

Lamp failure Flashes once: Fast

H: On

Power red LED operation (1 cycle)

Remarks

L: Off H: On

Pins are monitor microprocessor pins. L_FL_ERR (pin 73): Abnormal L. Confirmed after 5 consecutive detections at 1 second intervals (detected only when the backlight is on). Note that after five detection counts, the lamp cannot be activated except in the monitoring process. (For the first time, only the inverter is reset, and error OFF is not activated) Accumulated counts are cleared to 0 when the corresponding setting in the process A is made, when the power is turned on with [CH_DOWN] and [VOL_UP] on the unit down or after continuous illumination for 3 minutes. Refer to "Power failure details".

L: Off H: On Refer to "Communication failure details". Communication line failure or main CPU communication failure > Check debug statements for the main CPU. VSYNC (pin 48) failure (uninput). Trident_IC operation failure.

Power failure Flashes twice communication failure with main CPU Flashes 3 times Vsync Trident failure Flashes 4 times

L: Off H: On

Monitor temperature failure Flashes 5 times RemarksPins are monitor microprocessor pins unless otherwise specified. AC_DET (pin 31): Abnormal (L), DET_10V (pin 63). Main converter 13V/UR10V is not applied.

L: Off H: On

L: Off

Detected during operation (interruption) If the panel temperature is 60C or more for 15 seconds or more in a row, CAUTION appears on the OSD of AVC (flashes in red in the lower right screen). If the panel temperature is 60C or more for 25 seconds or more in a row, error standby is activated. (MONITOR MAX TEMP on process A mode: Change of temperature failure AD value): Thermistor

If error is detected during operation, the power is turned on again by interrupt handling (instantaneous blackout processing). DET_3V3 (pin 64): Abnormal (L). Main power 3.3V is not applied. If error is detected during operation, error standby is activated by polling. DET_6V (pin 27): Abnormal L). UR6V is not applied. If error is detected during operation, error standby is activated by polling. DET_D3V3 (pin 62): Abnormal L). Digital 3.3V is not applied. If error is detected during operation, error standby is activated by polling. DET_PNL5V (pin 57): Abnormal (L). Panel power is not applied. If error is detected during operation, error standby is activated by polling. Main microprocessor detection error (FAN error, 1bitAMP error, etc. The details are displayed in "ERROR STANDBY CAUSE" on page 1 of process A mode for the main microprocessor.

6 11Remarks

2) Power failure details (Power LED flashes twice and OPC LED flashes) Error type Power red LED operation (1 cycle) H: On PS_ON 13V/UR10V failure Flashes once L: Off EU_POW H: On Main 3.3V failure Flashes twice L: Off H: On D_POW UR6V failure L: Off Flashes 3 times D_POW H: On Digital 3.3V failure Flashes 4 times L: Off H: On PANEL_POW Panel 5V failure Flashes 5 times L: Off

Main failure Flashes 7 times

H: On

L: Off

Basically, communication logs are analyzed by a bus monitor or debug print logs are analyzed. Initial communication from the main CPU is not received. (After canceling the reset, request for the monitor model No. is not received.) Communication line failure or main CPU start-up failure Time-out setting and start-up mode change cannot be received from the main CPU. (Start-up communication until time-out setting and start-up mode change is not received.) Main CPU start-up failure or monitor microprocessor's reception failure Regular communication that is performed at 1 second intervals in the normal operation is interrupted. Main CPU operation failure or monitor microprocessor's reception failure

3) Communication failure details (Power LED flashes 3 times and OPC LED flash Error type Power red LED operation (1 cycle) H: On Initial communication reception failure L: Off Flashes once Time-out setting reception failure H: On Start-up confirmation reception failure L: Off Flashes twice Regular communication failure H: On

Flashes 3 times

L: Off

LC-32D50U

CHAPTER 7. MAJOR IC INFORMATIONS ServiceLC-32D50U

Manual

[1] MAJOR IC INFORMATIONS IC8101 (RH-IXB145WJQZQ) An LSI of a MPEG-2 system decoder that performs back-end processing for digital broadcasting. This is equipped with a CPU (processor core: AM33-3), descrambler (DES), transport stream demultiplexer, video decoder (MPEG-2 MP @ HL compatible), graphic processor, audio decoder (AC3 compatible), and an NTSC video encoder. After receiving transport stream from the tuner, the LSI decrypts pay-TV broadcasts with the descrambler. Then using the demultiplexer, it separates and decodes the compressed audio and video data to send the signals. In the visual system, the graphic processor makes it possible to overlap subtitles and perform scaling. Digital video signals (Y, Pb and Pr, or 480I/P, 720P and 1081I) and downconverted NTSC signals (Y/C and composite, or 480I) can be sent simultaneously. As for the audio system, decoded AC3 audio can be overlapped with sound effects. The LSI also contains various interfaces (I2C x 2, UART x 3, an SD Memory Card interface, a CableCARD interface, etc.) and a GPIO. Using these interfaces, the CPU controls peripheral circuits of the tuner, SD Memory Cards, CableCARDs, etc. One of the UARTs is used by the CPU to establish communications with the monitor microcomputer in the unit, where remote control information or other data is exchanged. Another UART is used for RS-232C serial communications to connect the unit to a PC.

71

LC-32D50U

Service Manual CHAPTER 8. OVERALL WIRING/BLOCK DIAGRAMLC-32D50U

[1] OVERALL WIRING DIAGRAMOVERALL WIRING DIAGRAMJ

KEY UNIT

KM P204 14

QCNW-E266WJQZI

80

1

80

1

INPUT3 HDMI INPUT4 HDMIH

SC1501

P2002 KM

P2602 SH P2601 LV

1

1

4

LCD CONTROL UNITQCNW-E278WJQZCN1 1 LV7

SH1

SC1502

1

7

QCNW-E537WJQZ

QC

DVI-I INPUT5

SC150 LB 1 P2603 4 PE1

I.LINKG

MAIN UNIT

QCNW-E257WJQZ

12

PE CN5701

I.LINK

P9701 121

F

DIGITAL AUDIO OUTPUT DVIAUDIO INPUT 5 R-AUDIO-L INPUT 4

D1402 J1502 J1501

PD P9702 6

QCNW-E258WJQZ

6 1

PD CN5702

QCNW-E249WJQZTU1101 U/V TUNER 1 SC1101 23 1 SC1301 23

E

SCSC8 SD

1

SC1102

23

PO UN

J503 1 23 S-VIDEO SC502 J501D

1

SC501

23

1

P2704

23

IF UNITINPUT1 INPUT3 J502 INPUT2 AUDIO OUTPUT11

P2703 SP4 1

P502 RA1

C

RS-232C CONTROL

UNT501 ANT IN

QCNW-E285WJQZ QCNW-E259WJQZ

SP-LB

LED UNIT

P101

1 11

RA

A

1

2

3

4

5

6

7

8

9

10

81

LC-32D50U

1

OL UNITLV SH1 CN2

WJQZ

INVERTER UNIT

QCNW-E261WJQZLA

1

LA10

To LAMP

CN7501 To LAMP

PE1

To LAMP

CN570310

QCNW-E438WJQZ6 1

PD

LB CN7502

To LAMP

To LAMP

POWER UNIT

To LAMP

To LAMP

To LAMP

AC IN

SP-R

11

12

13

14

15

16

17

18

19

82

LC-32D50U

[2] SYSTEM BLOCK DIAGRAM

SYSTEM BLOCK DIAGRAMJ

IFINPUT 1 CVBS/LR Component CVBS L/R YPbPr CVBS L/R S Video1 TV Main Out Video2 IC501 AV SWITCH MM1630CQ Main Y/V Main C/Cb Main Cr Y C

MAIN

14.318MHz Xtal 14.318MHz+3.3V +2.5V +1.8V

SC501 23Pin SC1101

IINPUT 2

+9V_A

Disclete LPF

Y/V C TUNER_V Comp_Y Comp_Cb Comp_Cr

CVBS/LR S Video

CVBS1 CVBS2(Y) C CVBS3 YCbCr

LVDS OUT

83.5MHz+2.5V

DDR IC3301 IXB405WJ Video Processer

HRS-232C RS232C UPD4721 Rx Tx HDMI_YPbPr CK,HD,VD TO CPLD RF_SW RF IN RF-SW ZA050WJQZ SC502 23Pin IF to MAIN I/F CVBS1_A AFT SIF Decoder IC1401 AN5832SA TS I2C1 INPUT 4 INPUT 5 HDMI Audio HDMI_L/R I2C0 (100KHz)I2C1_S DVI_L/R EEPROM INPUT 3 HDMI 1 I2C RX_x8+3.3V

Monitor Out

L/R

IF to MAIN I/F

164MHz

(I

Digital IN I2C

G

+5V

Analog/Digital Tuner TU1101 AA004WJQZ

SC1102

I/O Expander IC1301 M62320FP

SP_MUTE SP_RELAY L_MUTE AMP_MUTE HDMI_MUTE STANDBY

BUS SW IC9201 IXB011WJ

TUN_I2C

AGC

D_IF

SIF

I2C0_5

F

Demodulator IC8601 IXB684WJQZ

3-5V Conv (400KHz) (100KHz) EEPROM IC8454 BR24L64F

I2C_0

DVI Audio

EEPROM

5-3V Conv 5-3V Conv

+3.3V

Tx,Rx I2C+3.3V

E

SLOW BUS

INPUT 4

I2C HDMI 2 RX_x8

TMDS Selector IC1509 TMDS341

HDMI_YPbPr CK,HD,VD TS TS in

HDMI RX IC1508 SiI9011L

EEPROM

I2C_1

+3.3V

5-3V Conv

INPUT 5

DVI

I2C RX_x8 DTV/I2S

PH1 IC IXB1Digital AV dec

D

Tuner L/R IN1_L/R

DVI_L/R IN3_L/R IN4 HDMI_L/R IN5

AUDIO CODEC IC1403 IN1 AK4683EQ OUT1 IN2 SP_L/SP_R OUT2 IN3

DTV/SPDIF X'tal 27MHz CLK_Gen IC8401 IXB422WJ+3.3V

27MHz 74MHz CLOCK

N_CPU_RST

RESET SLOW B

SDTOA

SDTIA2

CSOUND DSP IC1406 NJU26111

SDTIA3

HDMI_SPDIF RX0 DTV_SPIDF RX1 DTV_I2S SDTIB

TX

IC9101 CPLD IXB685WJ

Connector for soft writingOPTICAL OUT SA SC1301 23Pin P2704 IC2701 Digital AMP TA2024 WA562WJQZ

P9301

FLASH 64Mb IC8451 S29GL64A

+3.3V

B

(in IF Unit)

AMP

RELAY

SP P2703 4Pin

A

1

2

3

4

5

6

7

8

9

10

83

LC-32D50U

LCD80 FFC

LCD PANEL

S OUT

83.5MHz R/L,U/D+2.5V

DDR

164MHz

IC3302 DDR (IXB375WJ) 128Mbit

BU+3.3

V

PNL+5V CPU H8 10MHz 10MHz Xtal

P2001 Connector F_MODE[3:1] for emulator

I/O I/O

TEMP[3:1],O_S_SET,FRAME,ROMSEL0

SH P2602 7Pin

R/L,U/D

LV P2601 32Pin LVDS

I/O

I2C1_SCL/SDA SW I2C C

+3.3V

IC2005 DAC M62332FPV

IC2004 EEPROM BR24L08F I/O ERR_PNL

BU+3.3

LB P2603 4Pin

VON

VON VBRT ERR_L

INVERTER

80 FFC

BL

A/D AFT DDR IC8301 IXB667WJQZ 256Mb A/D I/O

QSTEMP AREA1,3

Thermister AREA Detect

+2.5V

PSIZ_L,H Panel Size Detect

(400KHz) 00KHz)

DDR IC8302 IXB667WJQZ 256Mb

LB CN7502 6Pin

Inverter Circuit

LA CN7501 10Pin I/O CHK15V LA CN5703 10Pin +24V

YUVout CK,HD,VD

I2C_0

I2C_1

DDR I/ UART

PM_REQ TxD_PH1,RxD_PH1

I/O UART PANEL_POWFrom PH1

POWERAND AC_DETV

I/O

PNL5V_ON_PH1BU+3.3

PH1_Lite IC8101 IXB145WJQZDigital AV decode & Main CPU

I/O I/O

SMPOWHOLD EXT_SMPOWHOLD DET_10V,DET_3V3,DET_6V,DET_PNL5V LINK_POW

PNL+5V

N_SRESET I/O CBOOT I/O

I/O

SM_POW,D_POWFrom CPLD

HOLD

PNL_POW PS_ON,D_POW

BU+5V

IF

I/O A/D I/O

A/D I/O

SLOW BUS

TS

OPC OPC_LED,POW_LED_G

Main System +A5V +A9V +5V +3.3V +2.5V +1.8V_VL +1.2V +1.0V_ATI PNL_5V

AMP+13V +10V UR+6V

PE P9701 12Pin CN5701

BackUp System BU+3.3V BU+5V

PD P9702 6PIN CN5702

KEY1,KEY2

STBY_POW

AC PS_ON PFC MAIN

SD CARD

Standby Inverter

BU5v 24v

PNL-POW

10v UR +13v (PNL 5v)

TS IC8503 LINK/PHY TSB43DA42

BU+5 BU+3.3

V

R/C

Power Supply Circuit

Through IF Unit

i.Link

i.Link

SD CARD

RA P502 11Pin RA P101 11Pin

KM P2002 4Pin P151

AC IN

LED

KEY

R/C OPC LED

POWER INPUT TUNE VOLUME

11

12

13

14

15

16

17

18

19

84

LC-32D50ULC-32D50U

CHAPTER 9. PRINTED WIRING BOARD[1] PRINTED WIRING BOARDPRINTED WIRING BOARD ASSEMBLIESJ

Service Manual

MAIN Unit (Side-A)

I

H

G

F

E

D

C

B

A

1

2

3

4

5

6

7

8

9

10

91

LC-32D50U

11

12

13

14

15

16

17

18

19

92

J

I

F

E

C H

D

G

A

B

LC-32D50U

1cam1 R3347 k2 k1 P9007 k3 R1169 C3395 R3352 P2002 R1168 LUG1106 R3424C3407R3421 R3362

MAIN Unit (Side-A Chip)

2R3423R2609

LUG1104

3IC3302R3381 R3382

D1514

R1555

R1559

R1501

R1633

Q1508

Q1506

R1502

R2601

FB1513

R3422

SC1501C3392R3420 R3361 R3348 R3349

L1506 C1637 IC1506C1636

FL2606

C1537

P2602

L1507 D1523 R3416 R3417R3350 R3351

FL2611R2614

L1508 R3425 D1511R3431

R2602

L1509 R3432 R3433 R3434R3387 R3385 R3384 R3337 R3336 R3334 R3335 R3398

R3418

R3419

R2607

R3430 R3386

R3415 R3414

FL2604

4R1551

C1536

R3435

C1520

R1557

FB1516

C1518

D1501Q1505 Q1507R1516

C1554

C1552

Q1502R1619 R1634 R1520 R1636

Q1501

R3413

IC1509R1632

C2601

IC1510

C1585C1560R3339

R3338

C1561

C1598

C1595

C1605

C1603

C1619

C1618

C1622

C1621

C1635

R1616

R1611

R1625

C3350

R1505

C1596

R1628

R3429

C1551C1563R1609 R3369 R3370 R1607 R1599 R1600 R1608 R1614

C1599

R1519

FB2601

5C1562

SC1502 R1629C1564

L1510

C1543

C1544

L1511 R3428 IC1508C1565

FB3307

IC3301

L1512 R1630 IC1507 R3427

L1513

R3401 R3402 R3328

R1631R3367 R3368

93C1556R3322

C1549

L3306

C1550

P2601

R3327

L3304C3334

R1626 R3426

R1618TP1502

R1595 R1606

R1601

FB1517R1603 R1613 R1615

C1588

C1590

R1610

TL3302

C1604

C1600

C1612

C1610

R1635

6R1617

R3321

R3399

L3307

R1627

FB1520R1612

C1617

C1620

C3363

X3301

TL3301

L3305R3316 R3315

C1541 X1501FB3309

C1540

C3333

C3425

C3424C3309 C3315 C3301R3301 R3302 R3409

C3310 C3302 C3316

C3326 C3311 C3317 C3303

C3420 C3321

C3421

C3423

L1503

VA1505

C3322

L3308R3411 R3410 R8119

VA1508

C3312

C3313

L1504

VA1507 C3427

VA1506

C3308FB3302

C3328

R3309

L1502

VA1504

VA1503

L1501 P2001 P9301

VA1501

VA1502

C3306

FB3306

C3346

FB3301

7TP9102R9303 R9304

R1525

C1521

D1507

FB1505

R1528

SC1503 L1505C9102R9306

R1526

D1508

FB1509

P9008

R1529 IC1503

R1571

C1522

R1561

R9301

C1638

R1513

C1523 R1573R1577R9305

C1524

D1512

Q1509 C1641C9103R9111

R9106

R9115

FB1507

C1525

R1563

R1548

C1526 R1574R1578R9124 R9105

R1568

R1562

FB1508

C9654 C9652 C9621R8397 R8358 R8359 R8338 R8291 R8293

C9620 C9653 C9655R9001

8Q1510 P9101 R1575R1579

C1527

C1639

R1564

R1549

C1528

R1565

FB1506

C1529

R1569

R1566

C1640

R1550

C1530 Q1511

R1567

P9002

R1570

C8323

IC8301

TP9101C8318

TP9103 TP9106

R8366

L9603

L9602

R8365

C8322

C8314

R8369

R8370

C8325

9C8504FB8503R2065 R2053

C8312

C8507

C8509C8501R2005

C8537FB8501C2019 C2025 C2021 C8508

IC8502

IC8501

R9302

C8503

R2611

R9229

R9228

FL9201

FB8502

C8512C8517 C8516R8503

C8502

R2612 R9227 R9230

P2603

J8501C8518R8514

C9636

C9648

R8510 R8511

R2613 R9226

Q9602

Q9601

R8509

IC2003

C9202

IC2006

IC2004

IC2005

C8511 C8513 C8520R8513

L8501C2022R2066 R2064 R2059 R8518 R8519

R9647

R8115

FB8102

FB8101

R9225

IC9201

C8522 C8510 C8515R8517 C8514 R8522

R9637

C8523 C8525 C2020R2062 R2060 R2061 R2063

R2046

L8502C2023R2058 R2045 R2043

R2047 R2049 R2071

R8317R2044 R2048

C9650

TP2011

10R8564C2017 C2018R8538

C8526 C8528R2057 R2050

R8532

R8529

R2054

R2056

R2055

TP2014C2016

R8113

R9224

R8535

C2013

R2042

C8120R8311 R8390

C9646 C9647 R8394R2041

C9637C9651

C9645

C9635

C9634

C8529R8545 R8542

R8567

R8562C8532 C8534 C8531

TP2012

J8502R8571 R8 R R R8

R8558

C8530

TP2013

IC9607

IC9606

R8541

R8155

C8533

D2003

C8122 TP8 R

R8154

C8123

LUG1105

LC-32D50U

LUG1105

P2603

P9701

P9702

P1301

LUG1102

R2611

R2612

R2613

C1307

IC1302

D1307

C9702

C9703

C9704

C9705

R1304

C1301

R1310

C1304

C9701

FDC1

R1319

D9605

C9637

R9624

D1302

R1312

R1313

R9633

R1320 R1321

R9635

R9634

R9602

C9631

C9630

Q9604

R9604

D1310

C9634

R9637

R9630

C9628R9629 R9628

Q9606R9606 R9605

R9607

C9635

D9604

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