p50 hdtv10a service manual
TRANSCRIPT
Service Manual
V, Inc
320A Kalmus Drive Costa Mesa, CA 92626
TEL : +714-668-0588 FAX :+714-668-9099
Top Confidential
Model #: VIZIO P50HDTV10A
VIZIO P50HDTV10A HDTV Service Manual
Table of Contents CONTENTS PAGE Sections
1. Features 1-1
2. Specifications 2-1
3. On Screen Display 3-1
4. Factory Preset Timings 4-1
5. Pin Assignment 5-1
6. Main Board I/O Connections 6-1
7. Theory of Circuit Operation 7-1
8. Waveforms 8-1
9. Trouble Shooting 9-1
10. Block Diagram 10-1
11. Spare parts list 11-1
12. Complete Parts List 12-1
Appendix
1. Main Board Circuit Diagram
2. Main Board PCB Layout
3. Assembly Explosion Drawing
Block Diagram
VINC Service Manual VIZIO P50HDTV10A
VIZIO P50HDTV10A HDTV Service Manual
COPYRIGHT © 2000 V, INC. ALL RIGHTS RESERVED.
IBM and IBM products are registered trademarks of International Business Machines Corporation. Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc. VINC and VINC products are registered trademarks of V, Inc. VESA, EDID, DPMS and DDC are registered trademarks of Video Electronics Standards Association (VESA). Energy Star is a registered trademark of the US Environmental Protection Agency (EPA). No part of this document may be copied, reproduced or transmitted by any means for any purpose without prior written permission from VINC. FCC INFORMATION This equipment has been tested and found to comply with the limits of a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that the interference will not occur in a particular installation. If this equipment does cause unacceptable interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures -- reorient or relocate the receiving antenna; increase the separation between equipment and receiver; or connect the into an outlet on a circuit different from that to which the receiver is connected. FCC WARNING To assure continued FCC compliance, the user must use a grounded power supply cord and the provided shielded video interface cable with bonded ferrite cores. Also, any unauthorized changes or modifications to Amtrak products will void the user’s authority to operate this device. Thus VINC Will not be held responsible for the product and its safety. CE CERTIFICATION This device complies with the requirements of the EEC directive 89/336/EEC with regard to “Electromagnetic compatibility.” SAFETY CAUTION Use a power cable that is properly grounded. Always use the AC cords as follows – USA (UL); Canada (CSA); Germany (VDE); Switzerland (SEV); Britain (BASEC/BS); Japan (Electric Appliance Control Act); or an AC cord that meets the local safety standards.
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Chapter 1 Features
Wall-mountable
New WIDE HD Plasma Panel:1366 x 768 (H x V)
TruSurround XT sound system and DCDi by Faroujia video image
High definition digital interface – HDMI
HDCP supportive
Multiple-screen display (picture-on-picture/picture-in-picture)
Selectable picture mode
3-language On Screen Display
2 S-video and Composite video inputs
2 Component video inputs
2 HDMI inputs
6 audio stereos, 1 PC Mini-Jack
Supporting DVI converted to HDMI
Closed caption
Gloss front bezel
The thinnest model of this size: 99 mm
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Chapter 2 Specification
1. OPTICAL CHARACTERISTICS
Item Specification Note Display Pixels 1366 (H) x 768 (V) pixels Display Cells 3,072 (H) x 768 (V) cells Pixel Pitch 0.810 mm (H) X 0.810mm (V) Pixel Type Non-stripe Color Depth 1,024 (R) x 1,024 (G) x 1,024 (B) colors
Active Display Area 1106.5 mm (H) x 622.1 mm(V) Brightness (panel spec) 1000 cd/m2 (Typical) (w/glass filter) Min.280 cd/m2 Contrast ratio (panel spec) 8000:1 (Typical, dark room)
Color Coordinates (typical)
White (Panel spec) x=0.300±0.02, y=0.300±0.02 White (w/glass filter) Warm (5400K)
Standard (6500K) Cool (9300K) User: x=0.280±0.03, y=0.280±0.03 RGB
2. INPUT SOURCE
RGB Signal: H: support to 30-80KHz
V: support to 60-85Hz Pixel Clock: support to 108MHz
HDMI Signal: H: 15.734KHz V: 60Hz (480i)
H: 31KHz V: 60Hz (480p) H: 45KHz V: 60Hz (720p) H: 33KHz V: 60Hz (1080i)
S-Video: Video (Y): Analog 0.1Vp-p/75Ω
Video (C): Analog 0.286p-p/75Ω
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Composite Video signal: H: 15.734KHz V: 60Hz (NTSC)
Component signal: YPbPr/YCbCr H: 15.734KHz V: 60Hz (NTSC-480i) H: 31KHz V: 60Hz(NTSC-480p) H: 45KHz V: 60Hz(NTSC-720p) H: 33KHz V: 60Hz(NTSC-1080i)
RF Connector
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3. INPUT CONNECTORS
Input Label Connector Type Input Label Connector Type
SERVICE1 RJ-11 x 1 COMPONENT1 YPb/Cb Pr/Cr RCA Jack x 3 Audio RCA Jack x 2
SERVICE2 RJ-11 x 1 COMPONENT2 YPb/Cb Pr/Cr RCA Jackx 3 Audio RCA Jack x 2
HDMI1 19 pin HDMI x 1 Audio RCA Jack x 2
AV1 RCA Jack (CVBS) x 3 S-video 4 pin mini DIN x 1
HDMI2 19 pin HDMI x 1 Audio RCA Jack x 2
AV2 RCA Jack (CVBS) x 3 S-video 4 pin mini DIN x 1
RGB PC D-sub 15 pin x 1 Mini Jack x 1 (Audio input)
DIGITAL AUDIO OUT
1x SPDIF Digital Audio (Optical)
DTV/TV RF x 1 (Combo, F Connector for internal ATSC/QAM/NTSC Tuner)
4. OUTPUT CONNECTORS
a. Audio RCA Jack x 2 b. 3.5mm Mini-jack earphone x 1 c. SPDIF Digital Audio Out (Optical)
5. POWER SUPPLY
Consumption: 550W MAX Power OFF: less than 3W 6. SPEAKER
Output 8Ω/10W (max) X2
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7. ENVIRONMENT
Operating a. Temperature: 0~40 b. Relative humidity: 20%~80% RH c. Altitude: 0~6,560 ft
Non-operating a. Temperature: -20~60 b. Relative humidity: 10%~90% RH c. Altitude: 0~9,840 ft
8. DIMENSIONS
a. Height: 871 mm b. Width: 1241mm c. Depth: 310 mm (with standard), 99 mm (without standard)
9. WEIGHT
a. Net 54.5 +/- 1.5 kgs
b. Gross 65.0 +/- 2.0 kgs
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Chapter 3 On Screen Display
Main unit button
Buttons 1 2 3 4 5 6 7
Name MENU CH+/ CH-/ VOL+/ VOL-/ INPUT
OSD Adjustment
Main OSD Tree
Mode
Image Settings
VIDEO
Picture Mode
(Custom,vivid,
Movie,Game,Sport)
VIDEO Brightness(0~100)
VIDEO Contrast(O~100)
VIDEO Saturation(0〜100)
VIDEO Hue(-50~50)
VIDEO Sharpness(0~24)
VIDEO Advanced
VIDEO Noise Reduction
VIDEO Motion(0~16)
VIDEO Digital(0~64)
VIDEO Fleshtone Off﹑High、
Moderate、Low
VIDEO Dynamic Contrast
(0,1,2,3)
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Mode
VIDEO Custom Color
VIDEO Red(0~100)
VIDEO Green(0〜100)
VIDEO Blue(0~100)
PC Auto Adjustment
PC lmage Position
PC Phase
PC CIocks/Line
PC Color Temp
PC Warm(5400K)
PC Standard(6500K)
PC Cool(9300K)
PC User
PC Red(0~100)
PC Green(0〜100)
PC Blue(0~100)
Display Settings
VIDEO Aspect Ratio 16:9、4:3、Zoom、
Panoramic*
PC Aspect Ratio 16:9、4:3
PIP
PIP Mode Off, Large PIP,
Small PIP, POP
PIP Position Top-Left,
Top-Right,
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Mode
Bottom-Left,
Bottom-Right
PIP Input **
Audio Settings
Bass(0~20)
Treble(0~20)
Balance(-10~10)
SRS TS XT(On,Off)
Auto
Volume(On,Off)
Speakers(On﹑Off)
Audio Out*** Fixed Volume﹑Variable Volume
Parental Controls
VIDEO Password
VIDEO Settings
VIDEO TV Rating
VIDEO TV Youth
(Unblocked、Blocked)
VIDEO TV Youth 7
(Unblocked、Blocked)
VIDEO TV G (Unblocked、
Blocked)
VIDEO TV PG (Unblocked、
Blocked)
VIDEO TV 14 (Unblocked、
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Mode
Blocked)
VIDEO TV MA (Unblocked、
Blocked)
VIDEO Unblocked
VIDEO Movie Rating
VIDEO Movie G
(Unblocked、Blocked)
VIDEO
Movie PG
(Unblocked、
Blocked)
VIDEO
Movie PG-13
(Unblocked、
Blocked)
VIDEO
Movie R
(Unblocked、
Blocked)
VIDEO
Movie NC-17
(Unblocked、
Blocked)
VIDEO
Movie X
(Unblocked、
Blocked)
VIDEO Unblocked
VIDEO Block
Unrated(No﹑Yes)
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Mode
VIDEO Change
Password
VIDEO Please enter new
password
VIDEO Please re-enter
new password
VIDEO Clear All
(No,Yes)
Setup
Closed Caption
Display
CC1, CC2, CC3,
CC4, TEXT1,
TEXT2, TEXT3,
TEXT4
Captions on mute On, Off
Language English, French,
Spanish
Factory Reset
(No,Yes)
Image Cleaner
Firmware Version
TV TV Menu
TV Auto Scan
TV Set Channel
(Add/Skip)
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Mode
TV Cable/Antenna
DTV DTV Menu
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DTV Menu
DTV Menu
A.DTV Tuner
Setup
a.Time Zone
1.Hawall
2.Eastern Time
3.Indiana
4.Central Time
5.Mountain Time
6.Arizona
7.Pacific Time
8.Alaska
b.Cable/Air/Auto
c.Scan****
d.Manual Scan****
Scan mode
Add-on Mode
Range Mode
From Channel
To Channel
e.Channel Skip
f.Digital Audio Out
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DTV Menu
1.PCM
2.OFF
3.Dolby Digital
B.Closed
Caption
a.Analog Closed
Caption CC1~CC4、OFF
b.Digital Closed
CAPTION
Service1~Servic
e6、OFF
c.Digital Closed
Style
1.As Broadcaster
2.Custom
(1)Font Size
Large
Small
Medium
(2)Font Color
Black
White
Green
Blue
Red
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DTV Menu
Cyan
Yellow
Magenta
(3)Font Opacity
Solid
Translucent
Transparent
(4)Background
Color
Black
White
Green
Blue
Red
Cyan
Yellow
Magenta
(5)Background
Opacity
Solid
Translucent
Transparent
(6)Window Color
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DTV Menu
Black
White
Green
Blue
Red
Cyan
Yellow
Magenta
(7)Window
Opacity
Solid
Translucent
Transparent
Parental
control
C. Password
Channel Block
* HDMI and Component 720P/1080i inputs do not support Panoramic.
**See below for detailed information regarding the PIP sources.
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SUB MAIN
DTV
TV AV1 AV2 Component 1 Component 2RGB
HDMI 1 HDMI 2
DTV
TV
AV1
AV2
Component 1
Component 2
RGB
HDMI 1
HDMI 2
Remark:
(1) “ ” – Indicates which inputs are available for PIP and POP modes.
(2) For AV1 and AV2, S-Video has priority. If a signal is connected to AV1 S-Video by itself
or signals are connected to AV1 S-Video and AV1 Video simultaneously, then S-Video
will be the only choice for AV1. If a signal is connected to AV1 Video only, then Video
will be the only choice for AV1. The same input priority scheme applies to AV2.
*** When Speakers off
**** Do Scan or Manual Scan function, it maybe spend several minutes is normal. It
depends on channels and area.
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Chapter 10 PDP Trouble Shooting
A. SYSTEM OVERVIEW
Power supply board Y driver board
X driver board
Main board
EMI filter
IR board
Display board
ATSC Board
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B. PCB PARTS NAME/NUMBER AND FUNCTION DESCRIPTION
PART NAME PART NUMBER FUNCTION DESCRIPTION
POWER SUPPLY BOARD PROVIDE ALL THE POWER FOR TV SET
X DRIVER BOARD X ELECTRODE DRIVING BOARD
Y DRIVER BOARD Y ELECTRODE DRIVING BOARD
AUDIO POWER SELECTOR AUDIO POWER SUPPLY(+30V OR +24V)
MAIN BOARD 385000120150 CONNECTING TO TRANSFER DISPLY SIGNAL TO PDP SET, AMPLIFIER THE AUDIO SIGNAL TO
THE SPEAKER
IR BOARD 385000120189 RECEIVE THE REMOTE CONTROLER AND DISPLAY
SYSTEM STATUS LED
DISPLAY BOARD 385000120156 KEYPAD FUNCTION FOR MANUAL OPERATE TV
ATSC BOARD 385000120187 DTV/TV MODLE
C. BOARD PICTURE
MAIN BOARD
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DISPLAY BOARD
IR BOARD
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ATSC BOARD
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PDP DISPLAY NOTHING
1. Main board & ATSC board block diagram
U23 M61323FPVEDIO SW
CH4_R/L
VGA_AUDIO_L/R
I2CCM
U42 Sil 9011HDMI RS
Y1/C1
3 ATXD_HUD
ATXD_HUD
W1
COMP2_Audio_R/L
JTAG_BS_TCK/TDO/TMS/TDI/TRST
U35 Sil 9011HDMI RS
CVBS1
MSTR2_SCL/MSTR2_SDA
51_RXD/51_TXD
Analoginput
XU1 A29LV320DMEMERY_CTZ
B1_CTZ/C1_CTZ
1
IPCLK1/BHS/BVS/BDE
U37 CS3443HDMI2 LR DAC
ATXD
COMP1_Audio_R/L
JTAG_BS_TCK/TDO/TMS/TDI/TRST
HDMI1 AUDIO
CVBS2
AudioAV1_R/L
TDA8946ADAUDIO_AMP
B1_HUD/C1_HUD
IPCLK0/AHS/AVS/AHREF_DE
U32 P4450GAUDIOPROCESS
ARXD
A2/B2/C2_CTZ
CN17
AudioAV1_R/L
W8
TUNER SIF
SV3_CTZ/A1_CTZ
Lineout_R/L
U36 CS3443HDMI1 LR DAC
IPCLK0/AHS/AVS/AHREF_DE
U26 MAX232A
U21 24LC02EEPROM VGA
J10
BDATA[0:23]
FQD1236/F H-5
U12 SST25VF040FLASH 512K HUD
SV3_HUD/A1_HUD
HLIN/HRIN
U37 24LC02EEPROM HDMI1
FL8125_HUD
U45 74HCT14Inverting Schmitt Trgger
J9
BDATA[0:23]
COMP1_Audio_R/L
A2/B2/C2_HUD
SV2_CTZ
Frame StoreDDR Interface
W14
1
ATSC Audio L/R
SCL-33V / SDA-33V
U28 MAX4550AUDIO SW4/2 I/O
MSTR0_SCL/MSTR0_SDA
2 WireController
A2/B2/C2
U46 IDTQS3253HDMI1 AUDIO SW
U40 24LC02EEPROM HDMI2
KEY PADCN5
SV2_HUD
Digital BInput
DTV
U11 24LC32EEPROM HUD
ADATA[0:23]
W11
NTSC CVBS(SV1_HUT)
2 WireController
A3/B3/C3_HUD
FL8532_CTZ
U42 IDTQS3253HDMI1 AUDIO SW
U20 4052I/O SW
SV4_CTZ
BDATA[0:23]
Digital AInput
TV
J8Speaker L
W7
51_RXD/51_TXD
ARXD_HUD
U27 MAX4550AUDIO SW4/2 I/O
NTSC CVBS(SV1_CTZ)
OCM External SRAM
3
A3/B3/C3_HUD
2 WireController
SV4_HUD
ADATA[0:23]
JTAG BoundaryScan
TUNER
U25 F75373SATXD
U33 PT2308AUDIO DRIVER
AUDIO L/ROUT
NTSC CVBS
W5
IPCLK1/BHS/BVS/BDE
Y Pr Pb
A3/B3/C3_CTZ
J7Speaker R
Frame StoreDDR Interface
U38SST89C58
JTAG BoundaryScan
CN16
NC7SB3157U18 BUS SW
ATXD_HUD
U34 PT2308AUDIO DRIVER
Headphone
W12
2
ATSC YPr Pb
A3/B3/C3_CTZ
CN13
U40 24LC128EEPROM(8051)
Analoginput
GPIO
U24 M61323FPVEDIO SW
HY5DU56822CT-D4U16 DDR RAM HUD
ARXD
CH1_R/L
UART
MSTR2_SCL/MSTR2_SDA
W13 COMP2_Audio_R/L
Y Pr Pb
A4/B4/C4_HUD
CN12
U10MT5351
GPIO
W6
HDMI2_AUDIO_L/R
HY5DU56822CT-D4U17 DDR RAM CTZ
CH2_R/L
Serial ROMInterface
MSTR1_SCL/MSTR1_SDA
W10
VGA_AUDIO_L/R
VS / HS
A4/B4/C4_CTZ
AudioAV2_R/L
IPCLK1/BHS/BVS/BDE
HDMI1_AUDIO_L/R
LVDSDisplayInterface
MSTR1_SCL/MSTR1_SDA
ATSC Audio L/R
Display
U9MT5112
W13
R G B
VGA_SCL / VGA_SDA
A4/B4/C4
AIR_RAW_HS_CS/AIR_RAW_VS
U22 M61323FPVEDIO SW
ANLOG DDC
TUNER SIF
AudioAV1_R/L
UC_SCL/UC_SDA
LVDSDisplayInterface
ATSC Y Pr Pb
CH3_R/L
AIR_RAW_HS_CS/AIR_RAW_VS
2 WireController
VGA_SCL / VGA_SDA
Y2/C2
UART
2
ARXD_HUD
ARXD_HUD
HDMI2 AUDIO
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File No. SG-0197
1
PDP DISPLAY NOTHING(Analog HD1/AC on/off default)
Power LED is lighting?
Start
No
Yes
Check AC power cord
NoPress Meun or Info.
Is there any OSD’s logoPower LED is lighting?
No
Check U3.4 3.3V No
D10,D11 LED is lighting?
Check internal cable?1.LVDS cable.
Panel powerfail
U3 fail
Check U8 1.8V
Check U9 2.5V
NoU8 fail
NoU9 fail
If power_off high U2,U5 ON Check +3.3V_SW ,+5V_SW,+12V_SW(pin 5,6 and pin 7,8)
NoU2,U5 fail
Check Fuse open?(F2,F3,F4)
Fuse fail
Yes
No
Yes
U13 fail
No
YesCheck input source
Check internal cable?1.CN1’s cable 2.CN3’s cable
NoCheck main board CN3 pin 4 studyby +5V Check CN3 pin 3 RLY_ON(high) Check CN3 pin 2 VS_ON(high)
YseCheck CN1 pin 1,2,3 = +5V
pin 7,8 = +12V
NoNo
Yes
NoPower LED is lighting?
NoCheck W1 pin 27 is high?
(Display_ON)
No Remove R87.Check U13 pin AD14.
Is AD14 high? U13 fail
No
Yes
Yes
Yes
Check component 1(Y signal) C252 Is there sync?
No
Is picture on screen?
Yes
Block 1
No Trace componect 1 from Input To U13 circuitCheck R190,R191
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU13 fail
PDP DISPLAY NOTHING(Analog HD1 without Y signal)
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2
Check component 1(Pb signal) C259 Is there sync?
NoIs picture on screen?
No Trace componect 1 from Input To U13 circuitCheck R196,R198
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU13 fail
BLOCK 1
PDP DISPLAY NOTHING(Analog HD1 without Pb signal)
Check component 1(Pr signal) C264Is there sync?
NoIs picture on screen?
No Trace componect 1 from Input To U13 circuitCheck R204,R201
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU13 fail
BLOCK 1
PDP DISPLAY NOTHING(Analog HD1 without Pr signal)
Check component 1(Y signal) =>C255 Is there sync?
NoIs picture on screen?
No Trace componect 1 from Input To U10 circuitCheck R193,R191
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU10 fail
BLOCK 1
PDP DISPLAY NOTHING(Analog HD1 on PIP mode without Y signal)
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3
Check component 1(Pr signal) C255 Is there sync?
NoIs picture on screen?
No Trace componect 1 from Input To U10 circuitCheck R205,R204
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU10 fail
BLOCK 1
PDP DISPLAY NOTHING(Analog HD1 on PIP mode without Pr signal)
Check component 1(Pb signal) C255 Is there sync?
NoIs picture on screen?
No Trace componect 1 from Input To U10 circuitCheck R200,R198
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU10 fail
BLOCK 1
PDP DISPLAY NOTHING(Analog HD1 on PIP mode without Pb signal)
Check component 2(Y signal) C258,R195
Is there sync?
No
Is picture on screen?No
Check U23 outnput pin 31Input pin 13
Input clamp voltage pin 3(+5V)Output clamp voltage pin 32(+5V)
VCC3 pin 22,23(+5V)Input_switch_select high(+5V)
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU13 fail
PDP DISPLAY NOTHING(Analog HD2 without Y signal)
BLOCK 1
U23 failNo
Check before U23’s circuit1.C263,C265(AC coupled)2.R209 3.R216(75ohm)
YesNo
Input source fail
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4
Check component 2(Pb signal) C260,R197
Is there sync?
NoIs no blue color on screen?
NoCheck U23
outnput pin 28Input pin 15
Input clamp voltage pin 5(+5V)Output clamp voltage pin 29(+5V)
VCC3 pin 22,23(+5V)Input_switch_select high(+5V)
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU13 fail
PDP DISPLAY NOTHING(Analog HD2 without Pb signal)
BLOCK 1
U23 failNo
Check before U23’s circuit1.C268,C269(AC coupled)2.R211 3.R217(75ohm)
YesNo
Input source fail
Check component 2(Pr signal) C254,R192
Is there signal?
NoIs no red color on screen?
NoCheck U23
outnput pin 34Input pin 11
Input clamp voltage pin 1(+5V)Output clamp voltage pin 35(+5V)
VCC3 pin 22,23(+5V)Input_switch_select high(+5V)
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU13 fail
PDP DISPLAY NOTHING(Analog HD2 without Pr signal)
BLOCK 1
U23 failNo
Check before U23’s circuit1.C256,C261(AC coupled)2.R215 3.R218(75ohm)
YesNo
Input source fail
Check component 2(Y signal) C287,R212
Is there sync?
No
Is picture on screen?No
Check U24 outnput pin 31Input pin 13
Input clamp voltage pin 3(+5V)Output clamp voltage pin 32(+5V)
VCC3 pin 22,23(+5V)Input_switch_select high(+5V)
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU10 fail
PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Y signal)
BLOCK 1
U24 failNo
Check before U24’s circuit1.C282,C285(AC coupled)2.R209 3.R216(75ohm)
YesNo
Input source fail
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5
Check component 2(Pb signal) C288,R213
Is there sync?
NoIs no blue color on screen?
NoCheck U24
outnput pin 28Input pin 15
Input clamp voltage pin 5(+5V)Output clamp voltage pin 29(+5V)
VCC3 pin 22,23(+5V)Input_switch_select high(+5V)
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU10 fail
PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Pb signal)
BLOCK 1
U24 failNo
Check before U24’s circuit1.C289,C290(AC coupled)2.R211 3.R217(75ohm)
YesNo
Input source fail
Check component 2(Pr signal) C284,R210
Is there signal?
NoIs no red color on screen?
NoCheck U24
outnput pin 34Input pin 11
Input clamp voltage pin 1(+5V)Output clamp voltage pin 35(+5V)
VCC3 pin 22,23(+5V)Input_switch_select high(+5V)
Use GProbe connect from main to PC.
Does scaler detect the signal?
Yes
NoU10 fail
PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Pr signal)
BLOCK 1
U24 failNo
Check before U24’s circuit1.C276,C281(AC coupled)2.R215 3.R218(75ohm)
YesNo
Input source fail
Check U45H sync output U45 pin4,R181V sync output U45 pin8,R184
Is there signal?
No
Is picture on screen?
No Check U45H sync input U45 pin1,R185V sync input U45 pin5,R187
Check U22’s signal outputR signal C238,R180,R169,U22.34G signal C237,R177,R171,U22.31B signal C235,R174,R176,U22.28
Yes
No Check U22 input signalR pin 2, C239;C241(AC coupled),R186,R172(75ohm)G Pin 4,C234;C236(AC coupled),R166,R175(75ohm)B Pin 6,C221;C224(AC coupled),R164,R173(75ohm)
PDP DISPLAY NOTHING(RGB)
BLOCK 1
Check U45 pin 14 +3.3V
Yes
Check input sourceNo U45 fail
Yes
Check U22Input clamp voltage pin 1(+5V_V1)Output clamp voltage pin 35(+5V)
VCC3 pin 22,23(+5V)Input_switch_select low (0V)
Yes
U22 failNo
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File No. SG-0197
6
Check U45H sync output U45 pin4,R181V sync output U45 pin8,R184
Is there signal?
NoIs picture on screen?
No Check U45H sync input U45 pin1,R185V sync input U45 pin5,R187
Check U22’s signal outputR signal C233,R180,R169,U22.34G signal C232,R177,R171,U22.31B signal C231,R174,R176,U22.28
Yes
No Check U22 input signalR pin 2, C239;C241(AC coupled),R186,R172(75ohm)G Pin 4,C234;C236(AC coupled),R166,R175(75ohm)B Pin 6,C221;C224(AC coupled),R164,R173(75ohm)
PDP DISPLAY NOTHING(RGB on PIP mode without screen)
BLOCK 1
Check U45 pin 14 +3.3V
Yes
Check input sourceNo U45 fail
Yes
Check U22Input clamp voltage pin 1(+5V_V1)Output clamp voltage pin 35(+5V)
VCC3 pin 22,23(+5V)Input_switch_select low (0V)
Yes
U22 failNo
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File No. SG-0197
7
Check C308,R273,R274Is there signal?
NoIs picture on screen?
No
PDP DISPLAY NOTHING(Composite 1 on PIP without screen)
BLOCK 1
Check Q28’s emitter.Is there signal?
No Check Q28’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ28 fail
Check: 1.C309 (signal AC coupled)2.R276 3.R279(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q10 fail
No
Check input sourceNo
Check C310,R275,R274Is there signal?
NoIs picture on screen?
No
PDP DISPLAY NOTHING(Composite 1 without screen)
BLOCK 1
Check Q28’s emitter.Is there signal?
No Check Q28’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ28 fail
Check: 1.C309 (signal AC coupled)2.R276 3.R279(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q13 fail
No
Check input sourceNo
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File No. SG-0197
8
Check C316,R286,R285Is there signal?
NoIs picture on screen?
No
PDP DISPLAY NOTHING(Composite 2 without screen)
BLOCK 1
Check Q29’s emitter.Is there signal?
No Check Q29’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ29 fail
Check: 1.C315 (signal AC coupled)2.R282 3.R283(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q13 fail
No
Check input sourceNo
PDP DISPLAY NOTHING(Composite 2 on PIP without screen)
Check C316,R284,R285Is there signal?
NoIs picture on screen?
No
BLOCK 1
Check Q29’s emitter.Is there signal?
No Check Q29’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ29 fail
Check: 1.C315 (signal AC coupled)2.R282 3.R283(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q10 fail
No
Check input sourceNo
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File No. SG-0197
9
PDP DISPLAY NOTHING(S-VIDEO 1 without screen)
Check C320,R293,R292Is there signal?
NoIs picture on screen?
No
BLOCK 1
Check Q30’s emitter.Is there signal?
No Check Q30’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ30 fail
Check: 1.C319 (signal AC coupled)2.R297 3.R299(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q13 fail
No
Check input sourceNo
Is picture color ok? Check C328,R308,R307Is there signal?
No NoCheck Q31’s emitter.
Is there signal?
No Check Q31’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ31 fail
Check: 1.C327 (signal AC coupled)2.R296 3.R298(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q13 fail
No
Check input sourceNo
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File No. SG-0197
10
PDP DISPLAY NOTHING(S-VIDEO 1 on PIP mode without screen)
Check C318,R291,R292Is there signal?
NoIs picture on screen?
No
BLOCK 1
Check Q30’s emitter.Is there signal?
No Check Q30’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ30 fail
Check: 1.C319 (signal AC coupled)2.R297 3.R299(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q10 fail
No
Check input sourceNo
Is picture color ok? Check C326,R306,R307Is there signal?
No NoCheck Q31’s emitter.
Is there signal?
No Check Q31’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ31 fail
Check: 1.C327 (signal AC coupled)2.R296 3.R298(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?Q10 fail
No
Check input sourceNo
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File No. SG-0197
11
PDP DISPLAY NOTHING(S-VIDEO 2 without screen)
Check C332,R316,R320Is there signal?
NoIs picture on screen?
No
BLOCK 1
Check Q33’s emitter.Is there signal?
No Check Q33’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ33 fail
Check: 1.C335 (signal AC coupled)2.R300 3.R302(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?U13 fail
No
Check input sourceNo
Is picture color ok? Check C336,R319,R318Is there signal?
No NoCheck Q32’s emitter.
Is there signal?
No Check Q32’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ32 fail
Check: 1.C333 (signal AC coupled)2.R301 3.R303(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?U13 fail
No
Check input sourceNo
CONFIDENTIAL – DO NOT COPY Page10-17
File No. SG-0197
12
PDP DISPLAY NOTHING(S-VIDEO 2 on PIP mode without screen)
Check C331,R313,R320Is there signal?
NoIs picture on screen?
No
BLOCK 1
Check Q33’s emitter.Is there signal?
No Check Q33’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ33 fail
Check: 1.C335 (signal AC coupled)2.R300 3.R302(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?U10 fail
No
Check input sourceNo
Is picture color ok? Check C334,R317,R318Is there signal?
No NoCheck Q32’s emitter.
Is there signal?
No Check Q32’s Base.Is there signal?Check collectorvoltage(+5V).
NoQ32 fail
Check: 1.C333 (signal AC coupled)2.R301 3.R303(75ohm impedance) Is there signal?
Yes
Yes
Use GProbe connect from main to PC.
Does scaler detect the signal?U10 fail
No
Check input sourceNo
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File No. SG-0197
14
PDP DISPLAY NOTHING(Digital 2 U35 with PORT B without screen)
Is picture on screen?
BLOCK 1
Is picture color ok?
Check U35 pin 90 highV sync R419H sync R420clock R421
No Check +3.3V_SWFB19,FB20,FB21,FB22
U41 +1.8V_HDMI1
Check Q44source high(3.3V)
Check crystalY2=28.322MHz
Yes
NoCheck input source?
Yes
Yes
Check U35 I2C busCSDA pin 39CSCL pin 40
No Check Q44Gata high(5V)
NoQ44 fail
Yes
Check U35 all power U35 failYes
I2C addr. R424No
Check Block 2No
No Check U35’s RGB data busB RP10,RP11G RP12,RP14R RP16,RP17
Check U37 I2C busSCL Pin 6SDA pin 5
Yes
NoCheck U37 power
5V Pin 8
NoCheck D66 and D65Are there 5V output?
No D66 failor
D65 fail
Is picture on screen?No
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15
Block 2
HDMI’s chip communicate with
SM5964,is ok?
NoCheck U38’s power
Pin 44,35
Check Y311.0592MHz
Yes
NoCheck U38’s UART
TxD pin 13RxD pin 11
Check U20pin 16 +5V
Pin 10 output select=high
NoU20 fail
start
Check U2’s +5V_SWpin 7,8
No
Yes
Check R143,R144
Yes
NoU13 fail
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File No. SG-0197
TROUBLE OF DDC READING
Analog DDC OK?
Start
No
Yes
NoDigital HDMI1 DDC OK?
Support DDC2B 1.Analog cable ok? 2.Voltage of +5V_BUF ok? 3.Check U21 4.Is compliant protocol?
Support DDC2B 1.HDMI cable ok? 2.Voltage of VCC5_E2P_2ok?3.Check U44 4.Is compliant protocol?
Yes
NoDigital HDMI2 DDC OK?
Support DDC2B 1.HDMI cable ok? 2.Voltage of VCC5_E2P_1 ok?3.Check U37 4.Is compliant protocol?
End
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File No. SG-0197
PDP NO SOUND
PDP NO SOUNDStart
No
Yes
Check Audio AMP U19has output?
Check U19.8 and U19.9input siganl?
NoCheck C436,C430
Audio power DC power ok?No
Check F2 output has +24V?No
Audio power fail
Block 3
Check audio AMP U19 has output?
No
speaker fail
Yes
U32 has output signal?
Yes
No Appstest 90 1 0x14 0x3540(Gprobe 5.0)
Is there 1KHz output?
NoU32 Fail
Check U32 input R372~R379No
Check U27,U28 outputR326,R328 Digital HD2,AV1 R332,R334 Digital HD1,AV2 R348,R351 Analog HD1,VGAR356,R358 Analog HD2
No
Check U27,U28 I2C busU27 SDA=R344,SCL=R345U28 SDA=R359,SCL=R360
Check U27,U28+5V power
Pin 8,24,4-5V power
Pin 25
No Check U29’s power +5V_SW Pin 8
Yes
Check U29 output-5V_N pin 5
No
U29 fail
Yes
No
Check Q35 MSTR2_SCL Q37 MSTR2_SDA
Is there signal?
No
Check U13
Yes
Q35,Q37 fail
No
U13 fail
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File No. SG-0197
TROUBLE OF THE DTV