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

- 21 -
Check Signal format
Is it supported?
Check the Component Cable
YES
MAIN B D JK400 Check
Replace MAIN B D JK400
YES
NO
Check MAIN B D R419
Video Signal ?
YES
NO
Check MAIN B D C215, C209 (Y)
C214 (RED)
C216 (BLUE)
Video Signal ?
Replace
MAIN B D C215 or C209 or C214 or C216
NO
Replace MAIN B D IC 100
YES
10. Component No Video/ No Color Problem
Check Signal format
Is it supported?
Check the RGB Cable
YES
MAIN B’D P400 Check
Replace MAIN B’D P400
YES
NO
NO
YES
Check MAIN B’D C208 (Video)
R246 (HSYNC)
R245 (VSYNC)
Replace
MAIN B’D C208 or R246 or R245
NO
Replace MAIN B’D IC 100
YES
MAIN B’D JK Pin #2
Video signal ?
R437 has Vsync ?
R440 has Hsync ?
11. RGB No Video Problem
- 22 -
Check Signal format
Is it supported?
Check the RGB Cable
YES
MAIN B D P400 Check
Replace MAIN B D P400
YES
NO
NO
MAIN B D P400
Pin #3 (BLUE)
  Pin #2 (GREEN)
Pin #1 (RED)
Video signal ?
Check MAIN B D C212 (RED)
C207 (GREEN)
C213 (BLUE)
Video Signal ?
Replace
MAIN B D C212 or C207 or C213
YES
NO
Replace MAIN B D IC 100
YES
12. RGB No Color Problem
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace MAIN B D IC 100
Check the ADJUST MENU
EDID OK ?
YES
Download EDID
(Refer to Adjustment Spec)
NO
NO
Replace
MAIN B D IC601 (HDCP KEY)
13. HDMI1~4 All No Video Problem
- 23 -
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace IC100
MAIN B D IC600
MAIN B D JACK Check
J600 -> HDMI1
J601 -> HDMI2
J602 -> HDMI3
YES
 * This case is that HDMI Video doesn’t display at the some HDMI input, not all.
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace IC100
MAIN B D JACK Check
J603 -> HDMI4
YES
YES
14. HDMI1 or 2 or 3 or 4 No Video Problem
Check The Speaker
Check Speaker Cable
YES
Check P700 Cable
YES
NO
Replace MAIN B D IC 701
YES
MAIN B D
L705 Pin #1
L704 Pin #2
PWM Signal ?
Replace Speaker
NO
Replace Speaker Cable
NO
* If headphone is connected,
  Speaker sound doesn’t work
Replace MAIN B D IC803
NO
YES
MAIN B D
L700 = 1.8V
MAIN B D
Check R722, R720, R721
Signal
YES
Replace MAIN B D IC100
NO
Replace MAIN B D IC701
NO
15. All Source no Audio Problem
- 24 -
Digital TV Video OK ?
YES
Replace MAIN B D IC 100
16. Digital TV No Audio Problem
MAIN B’D R1216 Signal (SIF)
Replace MAIN B’D IC 1200
NO
Analog TV Video OK ?
YES
Check MAIN B’D
C231 Signal (SIF)
NO
Replace MAIN B’D IC 100
YES
YES
MAIN B’D R1269 Signal (SIF)
Replace MAIN B’D IC 1203
NO
17. Analog TV No Audio Problem
Check the SCART Cable
YES
Check MAIN B D
C229, C230
MAIN B D
C229 (Right Sound)
C230 (Left Sound)
signal ?
YES
NO
Replace MAIN B D IC 100
AV1 Video OK ?
YES
Check MAIN B D JK1100
Replace MAIN B D JK1100
NO
YES
18. AV1 No Audio Problem
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