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TFT-LCD TV
Chassis Model
GPL15KE LW15M23CP
LW15M25CP
GPL17KE LW17M24CP
GPL20KE LW20M21CP
LW20M22CP
LW20M25CP
SERVICE Manual
TFT-LCD TV Fashion Feature
- Easy-to-use remote control
- Easy-to-use on-screen menu system
- Automatic timer to turn the TV on and off
- Automatic channel tuning for up to 194
channels. (Air : 69 , STD : 125 )
- A special filter to reduce or eliminate
reception problems
- Fine tuning control for the sharpest picture
possible
- Built-in, dual channel speakers
- Headphone jack for private listening
Samsung Electronics Co.,Ltd.
- This Service Manual is a property of 416, Maetan-3Dong, Yeongtong-Gu, Suwon City,
Samsung Electronics Co., Ltd. Gyeonggi-Do, Korea, 443-742
Any unauthorized use of Manual can be Printed in Korea
punished under applicable International P/N : BN82-00131H-01
and/or domestic law. URL : http://itself.sec.samsung.co.kr/
7 Block Diagrams
7 Block Diagram
7-1
7 Block Diagrams
Memo
7-2
13 Circuit Descriptions
13 Circuit Descriptions
13-1 Overall Block Structure
13-1
13 Circuit Descriptions
13-2 Partial Block Description
13-2-1 MAIN BOARD POWER TREE
13-2
13 Circuit Descriptions
13-2-2 WIRING DIAGRAM
CN100(9P) : To IP Board
CN401(30P) : To 15",17" Panel
CN402(50P) : To 20" Panel
CN905(5P) : To Program Download Jig
CN906(20P) : To Scart
CN600(3P) : To Left Speaker
CN601(2P) : To Right Speaker
CN907(12P) : To Function Board
13-3
13 Circuit Descriptions
13-4
3 Alignments and Adjustments
3 Alignments and Adjustments
3-1 Service Instruction
1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation.
Check the basic characteristics such as height, horizontal and vertical sync.
2. Use the specified test equipment or its equivalent.
3. Correct impedance matching is essential.
4. Avoid overload. Excessive signal from a sweep generator might overload the front-end
of the TV. When inserting signal markers, do not allow the marker generator to distort
test result.
5. Connect the TV only to an AC power source with voltage and frequency as specified on
the backcover nameplate.
6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure
that the power cord is disconnected before replacing any parts.
7. To protect aganist shock hazard, use an isolation transform.
3-1
3 Alignments and Adjustments
3-2 How to Access Service Mode
3-2-1 Entering Factory Mode
1. To enter "Service Mode" Press the remote -control keys in this sequence :
- If you do not have Factory remote - control
- If you have Factory remote - control
3-3 Factory Data
-. OSD which the basic adjustment is added.
Service
PC Auto Color
PC Auto Color