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Service Manual
For LCD TV
(2004.2)
Table of Contents
1 Introduction................................................................... P3
1.0 Preface....................................................................................... P3
1.1 Caution....................................................................................... P3
1.2 Warning..................................................................................... P3
2 System Block Diagram..................................................... P5
2.0 System Block Diagram (ME)............................................................ P5
2.1 System Block Diagram (EE)............................................................ P6
2.2 Connector Connection Diagram....................................................... P7
2.3 Spare Parts List........................................................................... P8
2.3.1 EE parts list................................................................................. P8
2.3.2 ME parts list................................................................................ P14
2.4 Connector Pin Definition................................................................ P24
3 Schematic...................................................................... P40
3.0 Tuner Board................................................................................ P40
3.1 Graph Port Tuner......................................................................... P41
3.2 Interface Board............................................................................. P42
3.3 IR Board..................................................................................... P43
3.4 Keypad Board.............................................................................. P44
3.5 System Board-1 Graph Interface...................................................... P45
3.6 System Board-2 Power Management................................................. P46
3.7 System Board-3 PW181 Power Management........................................ P47
3.8 System Board-4 DVI Receiver.......................................................... P48
3.9 System Board-5 ADC..................................................................... P49
3.10 System Board-6 A/V Switch............................................................. P50
3.11 System Board-7 3D Comb Filter........................................................ P51
3.12 System Board-8 Video Decoder (V Port).............................................. P52
3.13 System Board-9 Video Decoder (G Port).............................................. P53
3.14 System Board-10 Deinterlace............................................................ P54
3.15 System Board-11 SDRAM................................................................ P55
3.16 System Board-12 Image Processor..................................................... P56
3.17 System Board-13 Flash Memory........................................................ P57
3.18 System Board-14 Miscellaneous......................................................... P58
3.19 System Board-15 LVDS................................................................... P59
3.20 System Board-16 Audio DSP............................................................. P60
3.21 System Board-17 Class D Audio PA.................................................... P61
1
4 TroubleShooting............................................................. P62
5 Firmware upgrade applications.......................................... P68
6 Standard Operation Procedure.......................................... P69
6.0 Module assembly process............................................................... P69
6.1 Module repair process................................................................... P72
6.1.1 Tuner & Interface module............................................................... P72
6.1.2 Stand module............................................................................... P73
6.1.3 Back Cover & Speaker module.......................................................... P74
6.1.4 PCBA module............................................................................... P75
6.1.5 Power module............................................................................... P76
6.1.6 LCD module.................................................................................. P77
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1. Introduction
1.0 Preface
This service manual aims directly at the module of LCD TV. It offers the simple
repair which emphasizes on technique explanation and production troubles to
remove for the engineers and technicians who have electronic background.
1.1 Caution
Be sure to read those manual before servicing. To assure safety from fire, electric
shock, injury, harmful radiation and materials, various measures are provided in
this Prokia LCD TV. Be sure to read cautionary items described in the manual to
maintain safety before servicing.
1.2 Warning
1. Remember to unplug the AC cord from the AC outlet before cleaning the
product. And do not use liquid cleaners or aerosol cleaners to clean the
display.
2. Do not place the product on an unstable place. It can cause the product to fall,
resulting in serious personal injuries as well as damage to the product.
3. In case the product needs replacement parts, make sure that the service
person uses replacement parts specified by the manufacturer, or those with
the same characteristics and performance as the original parts. Use of
unauthorized parts can result in fire, electric shock and/or other danger.
4. Do not overload AC outlets or extension cords. It can cause fire or electric
shock.
5. The AC cords must be routed properly to prevent people from stepping on
them or objects from resting on them. Check the cords at the plugs and
product.
6. Do not hit the panel. Be careful to prevent from getting hurt by broken glass
pieces in case the panel breaks.
7. Keep the product away from heat sources such as radiators, heaters, stoves
and other heat-generating products.
8. Do not place the display near water. Like bathtub, washbasin, kitchen sink
and laundry tub, swimming pool and in a wet basement.
3
2. System Block Diagram
2.0 System Block Diagram (ME)
5
2.1 System Block Diagram (EE)
6
2.2 Connector Connection Diagram
7
2.3 Spare Parts List
2.3.1 EE parts list
1. System Board for 27inch & 30inch
P/N: P061P3112011 for 27