DOWNLOAD LG 42SL9000-ZA / 42SL9500-ZB (CHASSIS:LD91L) Service Manual ↓ Size: 4.74 MB | Pages: 51 in PDF or view online for FREE

Model
42SL9000-ZA 42SL9500-ZB (CHASSIS:LD91L)
Pages
51
Size
4.74 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42sl9000-za-42sl9500-zb-chassis-ld91l.pdf
Date
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LG 42SL9000-ZA / 42SL9500-ZB (CHASSIS:LD91L) Service Manual ▷ View online

- 17 -
3. Digital TV Video Problem
Check RF Cable
MAIN B’D L821 = 5V ?
YES
MAIN B’D C894 = 3.3V ?
NO
Replace MAIN B’D IC809
YES
NO
Replace MAIN B’D IC808
MAIN B’D C870= 1. 8V ?
Replace MAIN B’D IC811
YES
NO
MAIN B’D L1211 = 1. 2V ?
Replace MAIN B’D IC1202
YES
NO
MAIN B’D X1202 Clock 
31.8 75MHz ?
Replace MAIN B’D IC1200
YES
NO
MAIN B’D X1201 Clock
20.2 5MHz ?
Replace MAIN B’D IC1203
YES
NO
Replace Main  board  IC100
YES
- 18 -
Check Signal format
Is it supported?
Check the SCART Cable
YES
MAIN B D JK1100 Check
Replace JACK B D JK1100
YES
NO
Check MAIN B D R1117
Video Signal ?
NO
YES
Check MAIN B D C210
Video Signal ?
Replace
MAIN B D C210
NO
Replace MAIN B D IC 100
YES
5. AV1(SCART CVBS) No Video Problem
Check RF Cable
MAIN B’D L821 = 5V ?
YES
MAIN B’D C894 = 3.3V ?
NO
Replace MAIN B’D IC809
YES
NO
Replace MAIN B’D IC808
MAIN B’D C870= 1. 8V ?
Replace MAIN B’D IC811
YES
NO
MAIN B’D X1202 Clock 
31.8 75MHz ?
Replace MAIN B’D IC1200
YES
NO
MAIN B’D X1201 Clock
20.2 5MHz ?
Replace MAIN B’D IC1203
YES
NO
Replace Main  board  IC100
YES
4. Analog TV Video Problem
- 19 -
Check Signal format
Is it su pported?
Check the SCART Cable
YES
Check MAIN B’D JK1101
Replace MAIN B’D JK1101
YES
NO
YES
Check MAIN B’D C200 (RED)
C201 (GREEN)
C202 (BLUE)
Video Signal ?
Replace
MAIN B’D C200, C201, C202
NO
YES
Check MAIN B’D R211 (RED)
R212 (GREEN)
R213 (BLUE)
Video Signal ?
Replace
MAIN B’D R211, R212, R213
YES
Replace MAIN B’D IC 100
6. AV1(SCART RGB) No Video Problem
Check Signal format
Is it supported?
Check the SCART Cable
YES
MAIN B D JK1101 Check
YES
NO
Check MAIN B D R1133
Video Signal ?
NO
YES
Check MAIN B D C211
Video Signal ?
Replace
MAIN B D C211
NO
Replace MAIN B D IC 100
YES
Replace JACK B D JK1101
7. AV2 No Video Problem
- 20 -
Check Spec (Refer to User Manual)
Is it supported?
Check the SCART Cable
YES
Check the Trouble Shooting Guide
Analog TV No video
YES
Check MAIN B D R1182
Video Signal ?
NO
Check MAIN B D C1107
Video Signal ?
NO
MAIN B D JK1100 Check
YES
8. AV1 No Video Out Problem
Check Spec (Refer to User Manual)
Is it supported?
Check the SCART Cable
YES
YES
Check MAIN B D C1122
Video Signal ?
NO
MAIN B D JK1101 Check
YES
MAIN B D C1109
Video signal ?
NO
Replace MAIN B D IC 100
9. AV2 No Video Out Problem
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