Hisense PDP4220EU Schematic

PDP4220EU

SERVICE MANUAL

(V1.0)

12, 2005

CONTENTS

SAFETY PRECAUTION……………………………………………………………..3 PRODUCT SAFETY NOTICE……………………………………………………….3 SPECIFICATIONS……………………………………………………………… . … 4 MAIN SPARE PARTS…………………………………………………………… … 5 BLOCK DIAGRAM…………………………………………………………………. 6 FUNCTION OF CONJUNCTIONS………………………………………………… 7 SIGNAL DIAGRAM……………………………………………………………… … 10 AUDIO DIAGRAM……………………………………………………………….. …. 11 TROUBLE SHOOTING…………………………………………………………….. 12 SOFTWARE UPDATING…………………………………………………………… 15 STAND INSTALLATION……………………………………………………………. 16 PDP WALL-MOUNTING GUDIE…………………………………………………… 17 SERVICE MODE MENU………………………………………………………… …. 19 PDP4220EU CIRCUIT DIAGRAM…………………………………………………. .21 PDP4220EU BOM LIST………………………………………………………………40

CAUTION: BEFORE SERVICING THE CHASSIS, READ THE “SAFETY

PRECAUTION” “PRODUCT SAFETY NOTICE”ON PAGE 1 OF THIS MANUAL.

SAFETY PRECAUTION

WARNING:

Service should not be attempted by anyone unfamiliar with the necessary preca ution on thisreceiver. The f ollowing are the necessary precautions to be observed before servicing this chassis.

1. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in place, such as: non-metallic control knobs, insulating covers, shields, isolation resistor-capacitor network etc.

2. When replacing parts or circuit boards, disconnect the power cord.

3. When replacing a high wattage resistor (oxide metal film resistor) on the circuit board, keep the resistor 10mm (1/2in) away from circuit board.

4. Connection wires must be kept away from components with high voltage or high temperature.

5. If any fuse in this TV receiver is blown, replace it with the FUSE specified in the chassis parts list.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the chassis have special safety-related characteristics.

These characteristics are often passed unnoticed by a visual inspection. Replacement parts, which have these special safety characteristics are identified in this manual and its supplement electrical components having such features are shaded on the schematic diagram and the parts list.

Before replacing any of these components, read the parts list in this manual care fully. The use of substitute replacement parts, which do not have the sam e characteristic as specified in the parts list may create shock, fire or other hazards.

Main Spare Parts

Name Type Part No.

Speaker set

1021554

YD70E-10W16R-B

Speaker set

1021555

YDQG20-10W8R-B

STAND MODULE PART

108214

FF-B12

4 AUDIO MODULE PART

WT2.908.1208

106642

5 main board module WT2.908.1207 106640 6

PORT module PART

WT2.908.1209 106644

7 EMI FILTER GLASS 42X20\JK 1024103 8 TUNER PORT KP0178 1004482

FRONTCABINET

MODULE PART

WTG6.179.222 106655

10 PDP MODUEL PDP42V74010 1030445 11 LVDS LINE HX-5041B400(B) 1025703 12

Remote control

EN-20515B 1023570

XP110

KEY BOARD .631

P801 P804 P803 P809 P802 CN101

JA700 JA400

AUDIO BOARD .516A

JA108 JA107

JA402

JA401

BLOCK DIAGRAM

CN404

CN401 CN402

J110

REMOTE CONTROLL .630

MAIN BOARD.515A

CN8611 CN506

XPV01

POWER SWITCH BOARD .632

CN8600

XPV02

FUNCTION OF CONJUNCTIONS

P801-----CN8611

ITEM NAME FUNCTION

1 ACD 2 RLY_ON HIGH LEVEL 3 5VSTB 4 GND 5 VSON HIGH LEVEL 6 5VD 7

P804---CN8600

ITEM NAME FUNCTION

1 9VSC no use 2 9VSC no use 3 GND 4 5VSC SIGNAL POWER 5 5VSC SIGNAL POWER 6 5VSC SIGNAL POWER 7 GND 8 GND 9 GND

P803---JA401

ITEM NAME FUNCTION

1 5VSC NO USE 2 5VSC NO USE 3 5VSC NO USE 4 GND 5 GND 6 GND 7 12VSC MSP3410, TA8851, TDA7053 8 12VSC MSP3410, TA8851, TDA7053

9 GND 10 GND 11 12

P809---JA402

ITEM NAME FUNCTION

1 9VSC TUNER POWER

2 GND

P802---JA400

ITEM NAME FUNCTION

1 30 OR 24V TA8200 POWER 30V

2 30 OR 24V TA8200 POWER 30V

3 GND

4 GND

CN401-JA108

ITEM NAME FUNCTION

1 I/O No use

2 GND

3 MUTE Control TA8200 mute

4 VOL Control TDA7053 PWM

5 C_P No use

6 GND

7 GND

8 Y_P

9 Y_M S-VIDEO Y SIGNAL 10 C_M S-VIDEO C SIGNAL 11 V_P No use 12 GND 13 V_M AV SIGNAL 14 GND

CN402---JA107

ITEM NAME FUNCTION

1 ADC2 No use

2 GND

3 GND

4 Y No use

5 GND

6 Pb No use

7 D5v No use

8 Pr No use

9 RxD 10 GND 11 GND No use 12 TxD No use 13 SDA 14 SCL

ITEM NAME FUNCTION

1 GND 2 RA1- NO USE 3 RA1+ NO USE 4 RB1- NO USE 5 RB1+ NO USE 6 GND 7 RC1- NO USE 8 RC1+ NO USE

9 RCLK1- NO USE 10 RCLK1+ NO USE 11 RD1- NO USE 12 RD1+ NO USE 13 GND 14 GND 15 RA2- 16 RA2+ 17 RB2- 18 RB2+ 19 GND 20 RC2- 21 RC2+ 22 RCLK2- 23 RCLK2+ 24 RD2- 25 RD2+ 26 GND 27 DISPEN NO USE 28 SDATA NO USE 29 SCLK NO USE 30 SLE NO USE 31 GND

SIGNAL DIAGRAM

S-VIDEO

SC1_VIN

SC2_VIN

SC2_Y/C

SC1/RGB/ FB

TA8851

AV/ A U DIO SWITC H

FLASH

39VF040

V_M

Y_M CM

PI5V330 U401

VPC3230

DECODE

R/G/B

CPU

DDR

HY57V643220DT-6

FLI2300

DEINTERLACE

RGB/FB

SDA5550

RXD,TXD

Update flash interface

DDR

K4D263238F

LVDS TO PANNEL

GM1501H

SCARLER

24LC64 EEROM

ST232C

FLASH

AM29LV800DT

SRAM IS62WV5128BLL

VGA

Y PB PR

DVI

Y PB PR/VGA

PI5V330Q

SWITCH

EDID 24LC21

DVI

MSP3410G

SC1_AINR

SIF VGA –L TVM_L/ SC1_AOL

VGA –R TVM_R/SC1_AOR

S –VIDEO-L TVP_L

S –VIDEO-R TVP_R

HDTV-L

HDTV-R

S8851-L

S8851-R

TA8200AH

AUDIO DIAGRAM

AV-L

AV- R

SC1_AINL/R

SC2_AINL/R

TA8851

AUDIO OUT

S8851 L

S8851 R

PIP L

PIP R

SC2_AOL

SC2_AOR

TDA7053

Troubleshooting

o picture

P.LED

Abnormal display

Enlarged display

Osd?

OFF

CHECK POWER CONNECTIONS

blue

OSD ?

VGA/H DTV?

Check main board connections /change main board

Check audio board connections /change audio board

yes

L.Led?

off

Check lvds connection

FLICKERING

Check module driver Board connections

red

Press [power] on the remote to quit stand-by mode

Check main board connections/ change main board

Check LVDS connection & module connections

Press [zoom] on the remote control to check whether it is in zoom mode

The TV system has wrongly identified 625-lines system as 525-lines system. Change to another source (such as video, pc) and change back to TV to correct it

Check problem channel input part circuit diagram

No sound

TV audio?

Press mute or stereo button

o proble

Check other channel?

ok no

Check audio board connections /change audio board

Check tv channel input part circuit diagram

Black bars on panel Red(green/blue) line on panel Red(green/blue) stripe on panel Big noise from panel

Replace the plasma display module with spare parts

Note:

.LED?

Power indicator at the right-bottom corner of the front panel. Normal state :blue; remote command state: bule flickering.

L.LED?

LVDS indicator on the logic processing board. Nor mal state: yellow flichering.

osd?

Press [MENU] to display menu on the screen.

VGA/HDT V?

Whether the VGA or HDTV picture display normally.

1，Adjusting sharpness can improve picture definition

2,Adjusting bright can improve picture administrative levels, it can display black background something. 3, If VGA or DVI colour isn’t natural You can optimize VGA. VGA can use white window of 800x600/ 60Hz. 4,PDP power is very large system. As you power off power. Power component must discharge period of time. Power can work steadily. If you power off and power on continuously. Then power work Unsteadily. Then PDP TV will display deviant picture. 5, TV, AV and S-VIDEO are the same white balance setting. Vga is a set white balance setting. HDTV is a set white balance setting. 6,picture mode does be divide four mode. Such as normal, bright, soft and user. If you adjust factory data. They will increase the same data. 7, If IC don’t work normally, it will take place follow some phenomena. ①TA8851 don’t work normally. TV, AV, S-VIDEO and PIP audio out aren’t picture and audio. Please check its SDA, SCL and power. ② MSP3450 don’t work normally. PC, HDTV, DVI, AUDIO OUT aren’t audio. Please check its SDA, SCL, reset and power. ③TA8200 don’t work normally. All audio aren’t audio except PIP audio. You can check its mute, power and input signal. ④VPC3230 don’t work normally. TV, AV, S-VIDEO aren’t picture. Please check its SDA, SCL, power, crystal wave. ⑤FLI2300 don’t work normally. TV, AV, S-VIDEO are problem. Please check its SDA, SCL, power, crystal wave and HY57V643220DT. ⑥GM1501H don’t work normally. All signal and OSD signal are problem. You can press it, and notice picture change. ⑦LVDS connector is problem. All signal and OSD signal are problem. You can press it, and notice picture change. ⑧24LC64 is problem. They can’t remember, such as Bright data, contrast data, etc ⑨Pi5v330Q u303 is problem. YPbPr and VGA picture are problem. ⑩24LC21 is problem. Some DVI signal couldn’t display normally. ⑾FLASH is problem. TV can’t turn on power. Colour of indicator light is problem. It is purple. Please update software. ⑿TDA7053 is problem. Pip audio isn’t audio. Please check power and PWM pin. ⒀If you cann’t update software. Please check software settings and ST232C. ⒁TELETEXT is problem, Please check SDA5550,39VF040,IS62WV5128BLL.

Software Updating

You can update our PDP’s software through a special RS232 cable (shown as below).

9 PIN D-SUB FEMALE 3.5 mm Stereo Earphone plug

This RS232 cable includes a 9 PIN D-SUB FEMALE, a 3.5mm Stereo Earphone plug and 3 wires. Built the cable as shown.

UPDATING STEPS:

1. Prepare a pc, and install update software.

Install GPROBE5.0 steps a, install GPROBE5.0 b, COPY GM1601FW file document TO “C:\” c, COPY three files of GF to chipdb file document d, use “batch c:\gm1601fw\ISP\batch\ FlashRom_7.txt ”command

2. Connect the cable: connect the 9 PIN D-SUB FEMALE end to a computer, and connect the stereo earphone plug end to RS232 terminal on the back panel of the PDP.

3. Run the application GPROBE5.0,then input command “batch c:\gm1601fw\ISP\batch\FlashRom_7.txt”.

4. Turn on the PDP and the updating process begins. (Warning: Must not turn off the

PDP in the updating process!)

5. When the updating finishes, it will display successfully.

6. Turn off the TV, and then turn on TV again.

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