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Service Manual

Sep. 30th, 2010 (Version 1.3) Page 1 / 21

Service Manual

TELEVISION SET

WITH 32

”

16:9 TFT LCD PANEL

Model : TFTV3225S2

Copyright 2010 COBY Electronics Co., Ltd.

All Right Reserved

Pravin Mevada

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Summary of Contents for TFTV3225S2

Page 1: ...Service Manual Sep 30th 2010 Version 1 3 Page 1 21 Service Manual TELEVISION SET WITH 32 16 9 TFT LCD PANEL Model TFTV3225S2 Copyright 2010 COBY Electronics Co Ltd All Right Reserved Pravin Mevada...

Page 2: ...0th 2010 Version 1 3 Page 2 21 CONTENTS Notes For Installation 3 Specifications 4 Block Diagram 7 PCB Mechanical Dimension 8 Board Connectors Pin Assignment 9 Exploded View 13 Schematic 14 Trouble Sho...

Page 3: ...LCD panel manufacturer we need to use different Firmware different LCD interface cable for LCD panel even on the same board Inverter Each LCD panels have their own inverter to obtain optimum performa...

Page 4: ...de 8bit data output single LVDS output e Input Refresh Rates fH 30 60KHz fV 60 75Hz Power Board Specification a AC Input Requirements Normal Voltage 100 to 240 Vrms Voltage Range 90 to 264 Vrms b Freq...

Page 5: ...g tuner TCL EXT TERMINAL VGA PC IN VGA Analog RGB INPUT PC AUDIO L R INPUT HDMI IN DIGITAL AUDIO AND VIDEO VIDEO AT RESOLUTION UP TO 1080P RGB PC VGA15 Part a Features of Analog RGB Part Horizontal Ra...

Page 6: ...Hz 832 x 520 37 9 31 5 VGA 640 x 480p 75 Hz 840 x 500 37 5 31 5 800 x 600 56 Hz 1024 x 625 35 2 36 0 800 x 600 60 Hz 1056 x 628 37 9 40 0 800 x 600 72 Hz 1040 x 666 48 1 50 0 800 x 600 75 Hz 1056 x 6...

Page 7: ...o be used with DA58CT 6 E 3 Key IR part will be divided into three PCB boards A IR PCB board a light board standby mode is blue low light the work mode does not shine or high lights you can press the...

Page 8: ...Service Manual Sep 30th 2010 Version 1 3 Page 8 21 PCB Mechanical Dimension TV main board a TOP Pattern Key IR Board Component a Key Pattern b IR Pattern...

Page 9: ...33 VCC 14 RX04 34 VCC 15 GND 35 VCC 16 GND 36 VCC 17 RXE0 37 IIC SCL 18 RXE0 38 IIC SDA 19 RXE1 39 GND 20 RXE1 40 GND b CON33 Connector from Main Board to IR Board 5PIN On Main Board PIN Symbol Descr...

Page 10: ...ction 5 GND Power Supply of Ground 6 R GND Ground Return of Analog Red Channel 7 G GND Ground Return of Analog Green Channel 8 B GND Ground Return of Analog Blue Channel 9 VGA5V Power Supply of 5V 10...

Page 11: ...nput f CON17 Connector of Component AV PIN Symbol Description 6 CND VIDEO Input 5 CVBS Right Channel Audio Input 4 CND Side AV 3 R Right Channel Audio Input 2 CND Side AV 1 L Left Channel Audio Input...

Page 12: ...ge 12 21 i CON 2 Connector of Y Pb Pr RL Y2 Pb2 Pr2 RL j CON 5 Connector of DVD Y Pb Pr RL for TVDVD3295 model PIN Symbol Description 1 GND Ground 2 R DVD R 3 L DVD L 4 GND Ground 5 Pr DVD Y Pb Pr 6 P...

Page 13: ...Service Manual Sep 30th 2010 Version 1 3 Page 13 21 Exploded View...

Page 14: ...Service Manual Sep 30th 2010 Version 1 3 Page 14 21 Schematic...

Page 15: ...Service Manual Sep 30th 2010 Version 1 3 Page 15 21...

Page 16: ...Service Manual Sep 30th 2010 Version 1 3 Page 16 21...

Page 17: ...Service Manual Sep 30th 2010 Version 1 3 Page 17 21...

Page 18: ...Service Manual Sep 30th 2010 Version 1 3 Page 18 21...

Page 19: ...2010 Version 1 3 Page 19 21 Trouble Shooting Flow Chart Step 1 Check Inverter Power of LCD Panel OK LED LIGHT ON LED brightness variations Check the main board CON 33 PIN SAR0 SAR1 and IR PIN SAR0 Low...

Page 20: ...Service Manual Sep 30th 2010 Version 1 3 Page 20 21 Step 2 CON PIN4 High See Panel SPEC Change main Board Change main Board Change main Board Change Main Board...

Page 21: ...Service Manual Sep 30th 2010 Version 1 3 Page 21 21 Step 3 Check Main board CON37 CON38 Change Main Board or U202...

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