Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment COBY LCD TFTV3225S2 TFTV3225 Service Manual 102010 coby 26-32··
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Service Manual
Service Manual
TELEVISION SET
WITH 32" 16:9 TFT LCD PANEL
Model : TFTV3225S2
Copyright 2010 COBY Electronics Co., Ltd.
All Right Reserved
Sep. 30th, 2010 (Version 1.3) Page 1 / 21
Service Manual
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 Shooting Flow Chart..............................................................19
Sep. 30th, 2010 (Version 1.3) Page 2 / 21
Service Manual
Notes For Installation
This television set with 32'' FT LCD panel, is designed mainly for receiving ATSC/NTSC system
TV source,or other sources such as DVD player and personal computer(TFDVD3295S2 Model),
via all diffident kinds of cables. This section provides some guidelines for assembly and
preparation of a finished display solution.
Preparation : Before proceeding, it is important to familiarize yourself with the parts making up the TV
Set and the various connectors, mounting holes, and general layout of the TV Set.
All connectors have their own number printed on the PCB board. And their signal
arrangements are shown in the following relevant sections.
4 LCD Panel : This TV Set has 12V,LVDS interface logic on the main board, for 32" TFT LCD panel.
Due to the different signal timing and electrical characteristics from each 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 performance and long lifetime.
Because, Each LCD panel makers use different type of back light tubes for their all different
models and inverter drives the tubes directly.
The main board of this TV Set just supplies the power for inverter logic and controls a light On/off signal
and a brightness control signal. So, it is important to use the inverter that has proper driving capacity and
control input signal. Generally speaking, the inverter is attached to TFT LCD panel, you should contact
with panel maker for any problem with the inverter.
Inverter cable : This cable supplies Inverter's power, an on/off control signal and a brightness control
signal to the inverter.
OSD Button : See Operational Function section.
3 Color LED : This LED shows the state of TV Set.
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