P50 HDTV10A Service Manual

7/14/2019 P50 HDTV10A Service Manual

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Service Manual

Model #: VIZIO P50HDTV10A


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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


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VINC Service ManualVIZIO P50HDTV10A

COPYRIGHT 2000 V, INC.ALL RIGHTS RESERVED.

IBM and IBM products are registered trademarks of International Business MachinesCorporation.

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 StandardsAssociation (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 anypurpose 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 reasonableprotection 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 withthe instructions, may cause harmful interference to radio communications. However, there isno guarantee that the interference will not occur in a particular installation. If this equipmentdoes cause unacceptable interference to radio or television reception, which can bedetermined by turning the equipment off and on, the user is encouraged to try to correct theinterference 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 anoutlet on a circuit different from that to which the receiver is connected.

FCC WARNINGTo assure continued FCC compliance, the user must use a grounded power supply cord andthe provided shielded video interface cable with bonded ferrite cores. Also, any unauthorizedchanges or modifications to Amtrak products will void the users authority to operate thisdevice. Thus VINC Will not be held responsible for the product and its safety.

CE CERTIFICATIONThis device complies with the requirements of the EEC directive 89/336/EEC with regard toElectromagnetic compatibility.

SAFETY CAUTIONUse 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


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Chapter 1 Features

y Wall-mountable

y New WIDE HD Plasma Panel:1366 x 768 (H x V)

y TruSurround XT sound system and DCDi by Faroujia video image

y High definition digital interface HDMI

y HDCP supportive

y Multiple-screen display (picture-on-picture/picture-in-picture)

y Selectable picture mode

y 3-language On Screen Display

y 2 S-video and Composite video inputs

y 2 Component video inputs

y 2 HDMI inputs

y 6 audio stereos, 1 PC Mini-Jack

y Supporting DVI converted to HDMI

y Closed caption

y Gloss front bezel

y

The thinnest model of this size: 99 mm


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Chapter 2 Specification1. 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/m

2

Contrast ratio (panel spec) 8000:1 (Typical, dark room)

Color Coordinates (typical)

White (Panel spec) x=0.3000.02, y=0.3000.02

White (w/glass filter) Warm (5400K)

Standard (6500K)

Cool (9300K)

User: x=0.2800.03, y=0.2800.03 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)


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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


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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(0100)

VIDEO Hue(-50~50)

VIDEO Sharpness(0~24)

VIDEO Advanced

VIDEO Noise Reduction

VIDEO Motion(0~16)


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Mode

VIDEO Custom Color

VIDEO Red(0~100)

VIDEO Green(0100)

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(0100)

PC Blue(0~100)

Display Settings

VIDEO Aspect Ratio

16:94:3Zoom

Panoramic*

PC A t R ti 16 9 4 3


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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

(UnblockedBlocked)

VIDEOTV Youth 7

(UnblockedBlocked)


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Mode

Blocked)

VIDEO

TV MA (Unblocked

Blocked)

VIDEO Unblocked

VIDEO Movie Rating

VIDEOMovie G

(UnblockedBlocked)

VIDEO

Movie PG

(Unblocked

Blocked)

VIDEO

Movie PG-13

(Unblocked

Blocked)

VIDEO

Movie R

(Unblocked

Blocked)

VIDEO

Movie NC-17

(Unblocked

Blocked)

Movie X


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Mode

VIDEOChange

Password

VIDEOPlease enter new

password

VIDEOPlease re-enter

new password

VIDEOClear All

(No,Yes)

Setup

Closed Caption

Display

CC1, CC2, CC3,

CC4, TEXT1,

TEXT2, TEXT3,

TEXT4

Captions on mute On, Off

LanguageEnglish, French,

Spanish

Factory Reset

(No,Yes)

Image Cleaner


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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


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DTV Menu

1.PCM

2.OFF

3.Dolby Digital

B.Closed

Caption

a.Analog Closed

Caption CC1~CC4OFF

b.Digital Closed

CAPTION

Service1~Servic

e6OFF

c.Digital Closed

Style

1.As Broadcaster

2.Custom

(1)Font Size

Large

Small

Medium

(2)Font Color


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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


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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 inp ts do not s pport Panoramic


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SUB

MAIN

DT

VTV AV1 AV2 Component 1 Component 2

RG

BHDMI 1 HDMI 2

DTV 9 9 9 9 9 9 9

TV 9 9 9 9 9 9 9

AV1 9 9 9 9 9 9 9 9

AV2 9 9 9 9 9 9 9 9

Component 1 9 9 9 9 9 9 9 9

Component 2 9 9 9 9 9 9 9 9

RGB 9 9 9 9 9 9 9 9

HDMI 1 9 9 9 9 9 9 9 9

HDMI 2 9 9 9 9 9 9 9 9

Remark

(1) 9 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. SYSTEMOVERVIEW

Power supply board

Y driver board

X driver board

Main board

EMI filter

IR board

Display board

ATSC Board


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B. PCBPARTSNAME/NUMBERANDFUNCTIONDESCRIPTION

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

ATSCBOARD 385000120187 DTV/TVMODLE

C. BOARDPICTURE

MAIN BOARD


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DISPLAY BOARD

IR BOARD


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ATSCBOARD


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PDPDISPLAYNOTHING

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 CS3443

HDMI2 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 P4450G

AUDIO

PROCESS

ARXD

A2/B2/C2_CTZ

CN17

AudioAV1_R/L

W8

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]

U12 SST25VF040FLASH 512K HUD

SV3_HUD/A1_HUD

HLIN/HRIN

U37 24LC02EEPROM HDMI1

FL8125_HUD

U45 74HCT14Inverting Schmitt Trgger

J9

BDATA[0:23]

A2/B2/C2_HUD

SV2_CTZ

Frame StoreDDR Interface

W14

1

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

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

J8Speaker L

W7

51_RXD/51_TXD

ARXD_HUD

NTSC CVBS(SV1_CTZ)

OCM ExternalSRAM

3

A3/B3/C3_HUD

2 WireController

SV4_HUD

ADATA[0:23]

JTAG BoundaryScan

U25 F75373SATXD

U33 PT2308AUDIO DRIVERW5

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

2

ATSC YPr Pb

A3/B3/C3_CTZ

CN13

U40 24LC128

EEPROM(8051)

Analoginput

GPIO


HY5DU56822CT-D4U16 DDR RAM HUD

ARXD

UART

MSTR2_SCL/MSTR2_SDA

Y Pr Pb

A4/B4/C4_HUD

CN12

GPIO

W6

HDMI2_AUDIO_L/R

HY5DU56822CT-D4U17 DDR RAM CTZ

Serial ROMInterface

MSTR1_SCL/MSTR1_SDA

W10

VS / HS

A4/B4/C4_CTZ

AudioAV2_R/L

IPCLK1/BHS/BVS/BDE

HDMI1_AUDIO_L/R

LVDSDisplay

Interface

MSTR1_SCL/MSTR1_SDA

Display

W13

R G B

VGA_SCL / VGA_SDA

A4/B4/C4

AIR_RAW_HS_CS/AIR_RAW_VS


ANLOG DDC

AudioAV1_R/L

UC_SCL/UC_SDA

LVDS

DisplayInterface

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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PDP DISPLAY NOTHING(Analog HD1/AC on/off default)

Power LED is lighting?

Start

No

Yes

Check AC power cord

No

Press Meun or Info.Is there any OSDs logo


No

Check U3.43.3V

No

D10,D11 LED is lighting?

Check internal cable?

1.LVDS cable.

Panel power

fail

U3 fail

Check U81.8V

Check U92.5V

No

U8 fail

No

U9 fail

If power_offhigh

U2,U5 ON

Check +3.3V_SW

,+5V_SW,+12V_SW

(pin 5,6 and pin 7,8)

No

U2,U5 fail

Check Fuse open?

(F2,F3,F4)

Fuse fail

Yes

No

Yes

U13 fail

No

Yes

Check input source

Check internal cable?

1.CN1s cable

2.CN3s cable

No

Check main board CN3 pin 4 studyby+5V

Check CN3 pin 3 RLY_ON(high)

Check CN3 pin 2 VS_ON(high)

YseCheck CN1pin 1,2,3 = +5V

pin 7,8 = +12V

NoNo

Yes

No


NoCheck W1 pin 27 is high?

(Display_ON)

No Remove R87.

Check U13 pin AD14.

Is AD14 high?

U13 fail

No

Yes

Yes

Yes

Yes

Block 1


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Check component 1

(Pbsignal)C259

Is there sync?

No

Is picture on screen?

No Trace componect 1 from

Input To U13 circuit

Check R196,R198

Use GProbe connect

from main to PC.

Does scaler detect the signal?

Yes

No

U13 fail

BLOCK 1

PDP DISPLAY NOTHING(Analog HD1 without Pb signal)

Check component 1

(Pr signal)C264

Is there sync?

No




Check R204,R201

Use GProbe connect

from main to PC.Does scaler detect the signal?

Yes

No

U13 fail

BLOCK 1

PDP DISPLAY NOTHING(Analog HD1 without Pr signal)

Check component 1

(Y signal) =>C255

Is there sync?

No




Check R193,R191

UseGProbe connect

Yes

No

BLOCK 1

PDP DISPLAY NOTHING(Analog HD1 on PIP mode without Y signal)


27/44

Check component 1

(Pr signal)C255

Is there sync?

No




Check R205,R204

Use GProbeconnectfrom main to PC.


Yes

No

U10 fail

BLOCK 1

PDP DISPLAY NOTHING(Analog HD1 on PIP mode without Pr signal)

Check component 1

(Pb signal)C255Is there sync?

No



Input To U10 circuitCheck R200,R198

Use GProbeconnectfrom main to PC.


Yes

No

U10 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


No

Check U23

outnputpin31Input pin 13

Input clamp voltagepin 3(+5V)Output clamp voltagepin 32(+5V)

VCC3pin 22,23(+5V)

Input_switch_selecthigh(+5V)Yes

PDP DISPLAY NOTHING(Analog HD2 without Y signal)

BLOCK 1

U23 fail

No


28/44

Check component 2(Pb signal)C260,R197

Is there sync?

No

Is no blue color on screen?

No

Check U23

outnputpin 28Input pin 15

Input clamp voltagepin 5(+5V)

Output clamp voltage

pin 29(+5V)VCC3pin 22,23(+5V)

Input_switch_selecthigh(+5V)

Use GProbeconnect

from main to PC.


Yes

No

U13 fail

PDP DISPLAY NOTHING(Analog HD2 without Pb signal)

BLOCK 1

U23 fail

No

Check before U23s circuit1.C268,C269(AC coupled)2.R2113.R217(75ohm)

YesNo

Input source fail

Check component 2(Pr signal)C254,R192

Is there signal?

No

Is no red color on screen?

No

Check U23

outnputpin 34

Input pin 11Input clamp voltagepin 1(+5V)

Output clamp voltagepin 35(+5V)

VCC3pin 22,23(+5V)


Use GProbe connect

from main to PC.


Yes

No

U13 fail

PDP DISPLAY NOTHING(Analog HD2 without Pr signal)

BLOCK 1

U23 fail

No

Check before U23s circuit1.C256,C261(AC coupled)2.R215

3.R218(75ohm)

YesNo

Input source fail

Check component 2

(Y signal)C287,R212Is there sync?

No


No

Check U24


Input clamp voltagepin 3(+5V)Output clamp voltagepin 32(+5V)

VCC3pin 22,23(+5V)

Input_switch_selecthigh(+5V)Yes

PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Y signal)

BLOCK 1

U24 fail

No


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Check component 2

(Pb signal)C288,R213

Is there sync?

No

Is no blue color on screen?

No

Check U24

outnputpin28

Input pin 15

Input clamp voltagepin5(+5V)

Output clamp voltagepin 29(+5V)VCC3pin 22,23(+5V)


Use GProbe connect

from main to PC.


Yes

No

U10 fail

PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Pb signal)

BLOCK 1

U24 fail

No

Check before U24s circuit

1.C289,C290(AC coupled)

2.R211

3.R217(75ohm)

YesNo

Input source fail

Check component 2

(Pr signal)C284,R210

Is there signal?

No

Is no red color on screen?

No

Check U24


Input clamp voltagepin1(+5V)


VCC3pin 22,23(+5V)


Use GProbe connect

from main to PC.


Yes

No

U10 fail

PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Pr signal)

BLOCK 1

U24 fail

No

Check before U24s circuit

1.C276,C281(AC coupled)

2.R215

3.R218(75ohm)

YesNo

Input source fail

Check U45

H sync output U45 pin4,R181

V sync output U45 pin8,R184

Is there signal?

No


No Check U45

H sync input U45 pin1,R185

V sync input U45 pin5,R187

Yes

PDP DISPLAY NOTHING(RGB)

BLOCK 1

Check U45

pin 14 +3.3V

Yes

Check input source

No U45 fail

Yes


30/44

Check U45

H sync output U45 pin4,R181

V sync output U45 pin8,R184

Is there signal?

No


No Check U45

H sync input U45 pin1,R185

V sync input U45 pin5,R187

Check U22s signal output

R signalC233,R180,R169,U22.34

G signalC232,R177,R171,U22.31

B signalC231,R174,R176,U22.28

Yes

No Check U22 input signal

R 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 source

No U45 fail

Yes

Check U22Input clamp voltagepin 1(+5V_V1)


VCC3pin 22,23(+5V)

Input_switch_selectlow(0V)

Yes

U22 fail

No


31/44

Check C308,R273,R274Is there signal?

No


No

PDP DISPLAY NOTHING(Composite 1 on PIP without screen)

BLOCK 1

Check Q28s emitter.Is there signal?

No Check Q28s Base.

Is there signal?

Check collectorvoltage(+5V).

No

Q28 fail

Yes

No

Check C310,R275,R274

Is there signal?

No


No

PDP DISPLAY NOTHING(Composite 1 without screen)

BLOCK 1

Check Q28s emitter.

Is there signal?

No Check Q28s Base.Is there signal?


No

Q28 fail

Check:

1.C309 (signal AC coupled)

2.R276

3.R279(75ohm impedance)Is there signal?

Yes

Yes

Use GProbe connect


Q13 fail

No

Check input source

No


32/44


Is there signal?

No


No

PDP DISPLAY NOTHING(Composite 2 without screen)

BLOCK 1

Check Q29s emitter.

Is there signal?

No Check Q29s Base.

Is there signal?


No

Q29 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.


Q13 fail

No

Check input sourceNo

PDP DISPLAY NOTHING(Composite 2 on PIP without screen)


Is there signal?

No


No

BLOCK 1

Check Q29s emitter.

Is there signal?



No

Q29 fail

Check:


2.R282

3.R283(75ohm impedance)Is there signal?

Yes

Yes

Use GProbe connect

from main to PC.


Q10 fail

No

Check input source

No


33/44

PDP DISPLAY NOTHING(S-VIDEO 1 without screen)


No


No

BLOCK 1


No Check Q30s Base.

Is there signal?Check collector

voltage(+5V).

No

Q30 fail

Check:

1.C319 (signal AC coupled)2.R297


Is there signal?

Yes

Yes

Use GProbe connect

from main to PC.


Q13 fail

No

Check input sourceNo

Is picture color ok?Check C328,R308,R307

Is there signal?

No NoCheck Q31s emitter.

Is there signal?

No Check Q31s Base.

Is there signal?

Check collector

voltage(+5V).

No

Q31 fail

Check:


2.R296


Is there signal?

Yes

Yes

Use GProbe connect

from main to PC.


Q13 fail

No

Check input source

No


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PDP DISPLAY NOTHING(S-VIDEO 1 on PIP mode without screen)


No


No

BLOCK 1


No Check Q30s Base.


voltage(+5V).

No

Q30 fail

Check:1.C319 (signal AC coupled)

2.R297


Is there signal?

Yes

Yes

Use GProbe connect


Q10 fail

No

Check input source

No


Is there signal?


Is there signal?

No Check Q31s Base.

Is there signal?

Check collector

voltage(+5V).

No

Q31 fail

Check:


2.R296


Is there signal?

Yes

Yes

Use GProbe connectfrom main to PC.


Q10 fail

No

Check input source

No


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PDP DISPLAY NOTHING(S-VIDEO 2 without screen)


No


No

BLOCK 1


No Check Q33s Base.


voltage(+5V).

No

Q33 fail

Check:

1.C335 (signal AC coupled)2.R3003.R302(75ohm impedance)Is there signal?

Yes

Yes


Does scaler detect the signal?U13 fail

No

Check input source

No


Is there signal?


Is there signal?

No Check Q32s Base.Is there signal?Check collectorvoltage(+5V).

No

Q32 fail

Check:


Yes

Yes



U13 fail

No

Check input source

No


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PDP DISPLAY NOTHING(S-VIDEO 2 on PIP mode without screen)


Is there signal?

No


No

BLOCK 1

Check Q33s emitter.

Is there signal?



No

Q33 fail

Check:1.C335 (signal AC coupled)

2.R3003.R302(75ohm impedance)Is there signal?

Yes

Yes


Does scaler detect the signal?U10 fail

No

Check input source

No


Is there signal?


Is there signal?

No Check Q32s Base.Is there signal?Check collectorvoltage(+5V).

No

Q32 fail

Check:


Yes

Yes



U10 fail

No

Check input source

No


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PDP DISPLAY NOTHING(Digital 2 U35 with PORT B without screen)


BLOCK 1

Is picture color ok?

Check U35 pin 90 highV syncR419H syncR420clockR421

No Check +3.3V_SWFB19,FB20,FB21,FB22

U41+1.8V_HDMI1

Check Q44sourcehigh(3.3V)

Check crystalY2=28.322MHz

Yes

No

Check input source?

Yes

Yes

Check U35 I2C bus

CSDApin 39CSCLpin 40

No Check Q44Gatahigh(5V)

No

Q44 fail

Yes

Check U35 all power U35 fail

Yes

I2C addr.R424

No

Check Block 2

No

No Check U35s RGB data busBRP10,RP11GRP12,RP14

RRP16,RP17

Check U37 I2C busSCLPin 6SDApin 5

Yes

NoCheck U37 power

5VPin 8

NoCheck D66 and D65

Are there 5V output?

No D66 fail

orD65 fail

Is picture on screen?No


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Block 2

HDMIs chipcommunicate with

SM5964,is ok?

No

Check U38s powerPin 44,35

Check Y311.0592MHz

Yes

NoCheck U38s UART

TxDpin13

RxDpin11

Check U20pin 16+5V

Pin 10output select=high

NoU20 fail

start

Check U2s +5V_SWpin 7,8

No

Yes

Check R143,R144

Yes

NoU13 fail


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TROUBLE OF DDCREADING

Analog DDC OK?

Start

No

Yes

No

Digital HDMI1 DDC OK?

Support DDC2B1.Analog cable ok?2.Voltage of +5V_BUF ok?3.Check U214.Is compliant protocol?

Support DDC2B1.HDMI cable ok?2.Voltage of VCC5_E2P_2ok?3.Check U44

4.Is compliant protocol?

Yes

No

Digital HDMI2 DDC OK?

Support DDC2B1.HDMI cable ok?2.Voltage of VCC5_E2P_1 ok?3.Check U374.Is compliant protocol?

End


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PDPNO SOUND

PDP NO SOUND

Start

No

Yes

Check Audio AMP U19has output?

Check U19.8 and U19.9input siganl?

No

Check 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~R379

NoCheck U27,U28 output

R326,R328Digital HD2,AV1R332,R334Digital HD1,AV2R348,R351Analog HD1,VGAR356,R358Analog HD2

No

Check U27,U28 I2C bus

U27SDA=R344,SCL=R345U28SDA=R359,SCL=R360

Check U27,U28

+5V power

Pin 8,24,4-5V power

Pin 25

NoCheck U29s power

+5V_SWPin 8

Yes

Check U29 output-5V_Npin 5

No

Yes


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TROUBLEOFTHEDTV


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P50 HDTV10A Service Manual

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Transcript of P50 HDTV10A Service Manual