Download - lg_ht-303_sh32sd-s_w
-
MO
DEL :HT303SD(SH32SD-S/SH32SD-W
)SERVICE M
ANUAL
DVD/CD RECEIVERSERVICE MANUAL
MODEL : HT303SD(SH32SD-S/SH32SD-W)
http://biz.lgservice.com
P/NO : AFN31640743
P/NO : AFN31640741 JANUARY, 2007
JANUARY, 2007
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1-1
[CONTENTS] SECTION 1. GENERAL
SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 SERVICE INFORMATION FOR EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
SECTION 2. AUDIO PART AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
SECTION 3. DVD & AMP PART ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 DVD & AMP CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
SECTION 4. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 SECTION 5. SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 SECTION 6. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
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1-2
SERVICING PRECAUTIONSNOTES REGARDING HANDLING OF THE PICK-UP1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/ordamage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reasonthe adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!Absolutely never permit laser beams to enter the eyes!Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surfaceIf there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as usedfor camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cottonswab should be used, taking care not to distort lens.
6) Never attempt to disassemble the pick-up.Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too muchof this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
Storage in conductive bag Drop impact
NEVER look directly at the laser beam, and dont allow contact with fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure
SECTION 1. GENERAL
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1-3
NOTES REGARDING COMPACT DISC PLAYER REPAIRS1. Preparations1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, componentscan be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must betaken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-ism is present, or where there is excessive dust.
2. Notes for repair1) Before replacing a component part, first disconnect the power supply lead wire from the unit2) All equipment, measuring instruments and tools must be grounded.3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This isbecause there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.5) Workers should be grounded by an armband (1M )6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent sta-
tic electricity changes in the clothing to escape from the armband.7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Resistor(1 Mohm) ConductiveSheet
Resistor(1 Mohm)
Armband
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1-4
ESD PRECAUTIONSElectrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such componentscommonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integratedcircuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the incidence of component damage caused by static electricity.1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surfacesuch as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch theprotective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHERSAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gener-ate static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, ISINTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THESERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.
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1-5
SERVICE INFORMATION FOR EEPROM (DVD PART)
POWER ON
DVD LOGO Status (NO Disk status)
Remote control Pause key-->1-->4-->7-->2 in order.
Press number 0~9, Press charaterA~F (1~6 for a while)
Use arrow key ( ) tomove to appropriate position andmake changes
Press pause key once
Change will be applied when powerOFF-->ON.
NAME
OPT 1OPT 2OPT 3OPT 4OPT 5OPT 6OPT 7OPT 8OPT 9OPT AOPT BOPT COPT DOPT EOPT FOPT G
HEX
485523FF2205FC314D00000000000000
DETECT NEW EEPROM(OPTION EDIT SCREEN)
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1-6
SERVICE INFORMATION FOR EEPROM (AMP PART)
POWER ON
FLD no disc status
Remote control 2 + Front STOPpush same timing during 5s
FLD OP-0.
Use arrow key ( ) moveto appropriate position and makechanges
Press ENTER key once
FLD write ok or up ok
Remote control 2 + Front STOPpush same timing
FLD display E2P CLR or EP CLR
Auto power off
NAME HEXOPT 1 86OPT 2 C2OPT 3 10OPT 4 00OPT 5 00
DETECT NEW EEPROM(OPTION EDIT SCREEN)
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1-7
SPECIFICATIONSGENERALPower supply Refer to main labelPower consumption Refer to main labelNet Weight 2.4 kgExternal dimensions (W x H x D) 360 x 63 x 307 mmOperating conditions Temperature: 5C to 35C, Operation status: HorizontalOperating humidity 5% to 85%
CD/DVDLaser Semiconductor laser, wavelength 650 nmSignal system PAL 625/50, NTSC 525/60Frequency response (audio) 160 Hz to 18 kHzSignal-to-noise ratio (audio) More than 75 dB (1 kHz, NOP -6 dB, 20 kHz LPF/A-Filter)Dynamic range (audio) More than 70 dBHarmonic distortion (audio) 0.5 % (1 kHz, at 1W position) (20 kHz LPF)
VIDEOVideo output 1.0 V (p-p), 75 , negative sync./ SCART (TO TV)COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 ohms, negative sync, RCA jack x 1
(Pb)/(Pr) 0.7 V (p-p), 75 ohms, RCA jack x 1
TUNERFM
Tuning Range 87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHzIntermediate Frequency 10.7 MHzSignal-to Noise Ratio 60 dB (Mono)Frequency Response 160 - 8,000 Hz
AM [MW]Tuning Range 522 - 1,620 kHz or 520 - 1,720 kHzIntermediate Frequency 450 kHz
AMPLIFIERStereo mode 45W + 45W (Rated Output Power 30W, 4at 1 kHz, THD 10 %)Surround mode Front: 45W + 45W (Rated Output Power 30W, THD 10 %)
Centre*: 45WSurround*: 45W + 45W (Rated Output Power 30W, 4at 1 kHz, THD 10 %)Subwoofer*: 75W (Rated Output Power 60W, 8at 30 Hz, THD 10 %)
Inputs AUX IN, MIC
SPEAKERSFront/Center/Rear Speaker Passive Subwoofer(SH32SD-S) (SH32SD-W)
Type 1 Way1 Speaker 1 Way1 SpeakerImpedance 4 8 Frequency Response 160 - 20,000 Hz 65 - 1,500 HzSound Pressure Level 84 dB/W (1m) 87 dB/W (1m)Rated Input Power 45 W 75 WMax. Input Power 90 W 150 WNet Dimensions (W x H x D) 98 x 101 x 105 mm 181 x 351 x 278 mmNet Weight 0.52kg 3.4kg
(* Depending on the sound modesettings and the source, there maybe no sound output.)
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2-1
SECTION 2. AUDIO PARTAUDIO TROUBLESHOOTING GUIDE
1. Power Supply Circuit
Insert power cord.
Check power plug and powersupply circuit.
Turn power on.
OK
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Does red power ledturn on?
Check power supply circuit.Is power on?
Check tracking servo circuit.Does it play?
Check audio circuit.Does it outputaudio?
Check laser circuit.
Check focus circuit.
Check disc.
Does red power ledturn on?
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2-2
2. Front circuit (1/2)
Power on.
Reconnect it.(Refer to notice *1)
Refer to SMPS part.
Check pattern and resoldering
Front B/D ok.
Red LED turn off?Check if
PN1301 is ok?
Is the Digitron oncorrectly?
Check if the frontpower is ok?(*2)
Check if allbuttons are ok?
Check if the remotecontrol is ok?
Check ifRM301 is ok?
Yes Yes
YesYes
Yes
Yes
No
No
No
No
No
1
2
NO
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2-3
3. Front circuit (2/2)
Refer toMICOM circuit.
Check if thepower part of the
front is ok?
Check ifR345~R350
ok?
Refer to power(SMPS).No
Replace R345 ~ R350.
No
Yes
Yes
1
Resolder orReplace RM301.
Check if the powerpart of the front is ok?
Check if the remotecontrol waveform of PN3101
pin11 is ok?
Check if RM301voltage is ok(5V)?
Refer to power(SMPS).No
Check RM circuit
Refer to MICOM circuit.Yes
No
Yes
No
Yes
2
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2-4 2-5
WIRING DIAGRAM
061026
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2-6 2-7
BLOCK DIAGRAM
061026
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061026
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-CUMSTANCES SHOULD THE ORIGINAL DESIGN BEMODIFIED OR ALTERED WITHOUT PERMISSIONFROM THE LG CORPORA TION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPESIDENTICAL TO THOSE IN THE ORIGINAL CIR- CUIT.
SPECIAL COMPONENTS ARE SHADED ON THESCHEMATIC FOR EASY IDENTIFICATION.THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,IMPLEMENTATION OF THE LATEST SAFETY ANDPERFORMANCE IMPROVEMENT CHANGES INTOTHE SET IS NOT DELAYED UNTIL THE NEW SERVICELITERATURE IS PRINTED.
NOTE : 1. Shaded( ) parts are critical for safety. Replace only
with specified part number.2. Voltages are DC-measured with a digital voltmeter
during Play mode.
NOTE) WarningNOTE) Parts that are shaded are criticalNOTE) With respect to risk of fire orNOTE) electricial shock.
NOTES) Symbol denotes AC ground.NOTES) Symbol denotes DC chassis ground.
2-8 2-9
CIRCUIT DIAGRAMS 1. SMPS(POWER) CIRCUIT DIAGRAM
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2-10 2-11
2. -COM(MAIN) CIRCUIT DIAGRAM
061026
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2-12 2-13
3. MOTOR & SERVO CIRCUIT DIAGRAM
061026
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2-14 2-15
4. I/O CIRCUIT DIAGRAM
061026
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2-16 2-17
5. MIC CIRCUIT DIAGRAM
061026
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2-18 2-19
6. FRONT JACK CIRCUIT DIAGRAM
061026
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2-20 2-21
7. FRONT CIRCUIT DIAGRAM(WITH RDS)
061026
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2-22 2-23
8. FRONT CIRCUIT DIAGRAM(WITHOUT RDS)
061026
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2-24 2-25
PRINTED CIRCUIT BOARD DIAGRAMS1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )
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2-26 2-27
2. MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )
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2-28 2-29
3. SMPS P.C. BOARD
NOTE: WarningParts that are shaded are critical withrespect to risk of fire or electrical shock.
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2-30 2-31
4. FRONT JACK P.C BOARD
5. FRONT P.C. BOARD(WITH RDS)
6. FRONT P.C. BOARD(WITHOUT RDS)
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3-1
ELECTRICAL TROUBLESHOOTING GUIDE1. System operation flow
SECTION 3. DVD & AMP PART
1. Initializes SERVO, DSP & RISC registers.2. Write RISC code to SDRAM.3. Reset RISC.
Show LOGO.
Yes
Yes
YesNo
No
No
No
Tray close to closed position.
SLED moves to inner position.
1. Judge whether have disc and disc type.2. Jump to related disc reading procedure.
1. Execute Pressed Key & IR Key.2. System operation routine loop.
1. Stop Playback & Open Tray.2. Display tray open message & LOGO.
POWER ON.
Tray closed?
SLED at innerside?
RecieveOPEN/ CLOSE
Key?
ReceiveCLOSE Key?
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3-2
2. Test & debug flow
Yes
Yes
Yes
Yes
No
Switch on the Power PCBA.
Replace FLASH.
Check the POWER PART.
NoCheck the POWER PART.
NoCheck the regulators or diode.
No 1. Check 27MHz system clock.2. Check system reset circuit.3. Check FLASH R/W enable signal PRD, RWR.4. Check FLASH Memory related circuit.
Check theAC voltage
Power PCBA (110Vor 220V).
UpdateFLASH
successfully?
Are 3.5V and 5V DCoutputs normal on main
PCBA?
Are theDC Voltage
outputs OK? (12V, 5.6V,3.5V, 5V,7V, 34V).
TEST.
A
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3-3
A
Power On.
Check AV cableconnection to TV set.
Check connection lines between FLASH &ES8380 and the FLASH access time whetheris suitable or not.
Check connection lines betweenSDRAM(IC502) & ES8380 and the SDRAM isdamaged.
Check the related circuit of ES8380IC501 Pins133, 134, 137, 138, 139, 140.
Check the load OPEN & CLOSE switch.
Check the Tray control IO pins on ES8380.
Check the Tray control MOTOR & SERVOcircuit IC401.
Show LOGO?
DoesTray move insidewhen it is not atclosed position?
FlashMemory operates
properly?
SDRAMworks properly?
ES8380VIDEO outputs
properly?
Check AV cable connection betweenmain PCBA and loader. (MECHA)
NormalOPEN_SW,CLOSE_SW
signal?
NormalIN_SW & OUT_SW
signal?
NormalLOAD+ & LOAD-
signal?
B
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3-4
B
Do not put in disc and closetray.
Does the SLEDmove to inner side when it is
at outer position?
Optical Lenshas movements forsearching Focus?
C
Check the cable connectionwith MECHA.
Check the connection line ofDRV_MUTE.
Check the related circuit of SLEGN.
Check the amp circuit on motor driver.
MotorDriver DRV_MUTE
pin is high?
MotorDriver DRV_MUTE
pin is High?
SLED+ andSLED- output
properly?
Check cable connection withpick-up head.
Check Focus connection onES8381 and motor driver.
Check the amp circuit on motor driver.
Proper Focus outputsto motor dricer?
Proper F+ & F- outputs?
Yes
YesYes
Yes
Yes
Yes
Yes
No
No
No
No
NoNo
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3-5
C
Laser turns on whenreading disc?
Put disc in?
D
Check the laser power circuit onES8380 and connecting topower transistor.(Q405, Q406).
Check the related circuit on laserpower transistor.
Check the related circuit onES8380 RF signal.
Check the SPINDLE related circuiton ES8380.
Check the spindle control amp circuitof motor driver.
Laser off.
Check the RF connectionbetween IP9009 and ES8380.
Check the cable connectionbetween spindle and main PCB.
Check cable connectionbetween transistor output andpick-up head.
DVDLD orCDLD output
property?
Disc ID is correct?
Does spindle rotate?
Collectorvoltage of powertransistor is OK?
(Q405, Q406)
ProperRF signal on ES8380.
ProperSPINDLE signal on
ES8380.
SPNPSPNN output
properly?
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No No
No
No
No
No
No
No
No
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3-6
D
Focus on ok?
E
Check connections betweenES8380 and pick-up head.
Check the related circuit onES8380 CD-DVDCT.
Check the TRACK connectionon ES8380 and motor driver.
Check the tracking control ampcircuit on motor driver.
Check the related circuit onES8380.
Check cable connectionon pick-up head.
Check RF signal waveform.
Check CD_DVDCT connectionbetween IP9009 and ES8380.
Propersignals on A, B, C,
D of ES8380.
Track On OK?
Disc Playback?
ProperCD-DVDCT signal
on ES8380.
ProperTRACK signalon ES8380.
TR+ & TR-output properly?
ProperCD-DVDCT signal
on ES8380.
YesYes
Yes
Yes
Yes
Yes
Yes
Yes
No No
No
No
No
No
No
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3-7
E
Normal Audiooutput when disc
playback?
Check connection betweenIC701 BCK, LRCK, ADATAO.
Check the related circuit ofPWM.(Check Audio outPins 54, 55, 58, 59, 61, 62,67, 68, 70, 71, 74, 75.
Check Digital Amp circuit(IC702, IC703).
PWM ICreceived correct data
stream?
NormalPWM IC out?(IC701).
TEST END.
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3-8
3. AUDIO -COM Circuit(DVD & AMP)
YES
Does CD/DVD appearat FLD?
Does AUX, SCART, OPTand FM 87.5 appear at FLD. OK
Does Loading appearat FLD?
POWER ON.
YES NO
YES
Does no Disc or Timeappear at FLD?
NO YES
NO
NO
NO
NO
NO
NO
Does it appear DVD Errorat FLD?
Refer to SMPS.
Refer to oscillator circuit.
Check IC101 resetwaveform.
Check 3.3V line.
Check power sectioncircuit.
NO
Check power part of MainB/D.
Check oscillator of X101.
Check if IC101 Pin41is high.
Check if IC101 Pin15, 16,47 are high(5V).
Check if IC101 Pin1is high.
Replace IC101.
NO
NO
Check if DVD an audiomicom insert is OK.
Check Power.
YES
Check DVD Module.
YES
Check SMPS.
YES YES
YES
YES
YES
YES
YES
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3-9
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL
1) ES8380 main clock is at 27MHz(X501)
3.8V, 27MHz
FIG 1-1
2) ES8380 reset is high active.
PWR_CTL(SYSTEM -COM)(IC101 PIN2)
5.2VA
Power Cord in
DVD_RESET(IC101 PIN 41)
MRST#(IC501 PIN 203)
FIG 1-2
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3-10
2. SDRAM CLOCK
1) ES8380 main clock is at 27MHz(X501)
(IC502 PIN 38)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V
FIG 2-1
3) Flash R/W enable signal during download(Downloading)
FRD(IC503 PIN 28)
FWR(IC503 PIN 11)
FIG 1-4
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3-11
3. TRAY OPEN/CLOSE SIGNAL
1) Tray open/close waveform
OPENSW(P401 PIN3)
CLOSESW(P401 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-1
2) Tray close waveform
OPENSW(P401 PIN3)
CLOSESW(P401 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-2
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3-12
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
SLO(2.0V/1.4V/1.0V)(IC501 PIN 173)DRV_MUTE(5V) (IC401 PIN 21)
SLED+(4.7V/3.6V/1.9V)(IC401 PIN 17)
SLED-(5.3V/3.7V/2.5V)(IC401 PIN 18)
FIG 4-1
3) Tray open waveform
OPENSW(P401 PIN3)
CLOSESW(P401 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-3
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3-13
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FOO(1.5V/1.4V/1.3V)(IC501 PIN 172)
F+(4.0V/3.6V/3.2V)(IC401 PIN 13)
F-(4.0V/3.6V/3.2V)(IC401 PIN 14)
FIG 5-1
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
DVD MDI(0V/180mV)(IC501 PIN 152)
DVDLDO501(5.0V//3.5V)(IC501 PIN 149)
CDLDO(5.0V/3.6V)(IC501 PIN 150)
FIG 6-1
-
3-14
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-2 (DVD)
7. DISC TYPE JUDGEMENT WAVEFORMS
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-1 (DVD)
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3-15
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-3 (CD)
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 133)
RF(IC501 PIN 160)
FIG 7-4 (CD)
-
3-16
CD_DVDCT(IC501 PIN 133)
FOO(IC501 PIN172)
F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-2 (CD)
8. FOCUS ON WAVEFORMS
CD_DVDCT(IC501 PIN 133)
FOO(IC501 PIN172)
F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-1 (DVD)
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3-17
9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)
SPINO(1.4V/1.8V)(IC501 PIN 171)SP-(3.6V/2.4V)(IC501 PIN 156)
SP+(3.6V/4.8V)(IC501 PIN 155)
FIG 9-1
10. TRACKING CONTROL RELATED SIGNAL(System checking)
CD_DVDCT(IC501 PIN 133)
TRO(IC501 PIN 174)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-1(DVD)
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3-18
CD_DVDCT(IC501 PIN 133)
TRO(IC501 PIN 174)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-2(CD)
11. ES8380 VIDEO OUTPUT WAVEFORMS
1) Full colorbar signal(COMPOSIT)
(IC501 PIN 110)
FIG 11-1
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3-19
2) Y
(IC501 PIN 113)
FIG 11-2
1) Audio L/R
FIG 12-1
12. AUDIO OUTPUT FROM PWM IC
(IC701 PIN 1, 7)
-
3-20
BCK(IC501 PIN 124)
LRCK(IC501 PIN 117)
ASDATA3
2) Audio related Signal
ADATA0(IC501 PIN 118)
FIG 12-2
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3-21
1)
R620 TP611orR621 TP612
2)
R618 TP609orR619 TP610
3)
R612 TP603orR613 TP604
4)
R610 TP601orR611 TP602
5)
R614 TP605orR615 TP606
6)
R616 TP607orR617 TP608
13. DVD & AMP WAVEFORMS
-
061026
3-23 3-24
DVD & AMP CIRCUIT DIAGRAM1. MPEG CIRCUIT DIAGRAM
-
061026
3-25 3-26
2. DSP & AMP CIRCUIT DIAGRAM
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4-1 4-2
CABINET AND MAIN FRAME SECTION
D
AB
D
A
B
MAIN
SMPS
NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.
CC
275 465
A50
A43
280
273
283
P3502
279
273
CABLE1
465
A47 300
A46473
463
463
463
463
A26
250
A44
261
260
SECTION 4. EXPLODED VIEWS
Copyright 2007 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
462
-
4-3 4-4
DECK MECHANISM EXPLODED VIEW(DP-10T)
026
001002
003
A01
020
018
014
013
017
435012
A26
019
012
440
015B
015A
015
016
A02
439
012A
012A
010
432
030
025
024
439
431435
430
021
036
A03
-
4-5
PACKING ACCESSORY SECTION
BATTERY808
INSTRUCTION ASSEMBLY801REMOCON900
824 ANTENNA LOOP(AM)
825 ANTENNA (FM)
BAG804
PACKING, CASING803
BOX802
PACKING, CASING803
-
5-1
SECTION 5. SPEAKER SECTION FRONT/CENTER/REAR SPEAKER (SH32SD-S)
852
853
850
851
WIRE84WIRE83WIRE82WIRE81WIRE80
A84A83A82A81A80 F.R SPK
F.R SPKF.L SPK CENTER SPK R.R SPK R.L SPK
F.L SPK
R.R SPKR.L SPK
CENTER SPK A80SLA80SRA80CA80FLA80FR F.R CASE Assembly
F.L CASE Assembly
R.R AssemblyR.L Assembly
CENTER Assembly
-
5-2
4. LHS-96SB PASSIVE SUBWOOFER SPEAKER (SH32SD-W)
951
WIRE90
953
952
954950
A90
-
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