LG 47SL9000-ZA / 47SL9500-ZB (CHASSIS:LD91L) Service Manual ▷ View online
- 25 -
Check the SCART Cable
YES
Check MAIN B’D
C2008, C2009
MAIN B’D
C2008 (Right Sound)
C2009 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
AV2 Video OK ?
YES
Check MAIN B’D JK1101
Replace MAIN B’D JK1101
NO
YES
19. AV2 No Audio Problem
Check the Component Cable
YES
Check MAIN B’D
C2013, C2014
MAIN B’D
C2013 (Right Sound)
C2014 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
Component Video OK ?
YES
Check MAIN B’D JK400
Replace MAIN B’D JK400
NO
YES
20. Component No Audio Problem
- 26 -
Check the PC Audio Cable
YES
Check MAIN B’D
C2015, C2016
MAIN B’D
C2015 (Right Sound)
C2016 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
RGB Video OK ?
YES
Check MAIN B’D JK401
Replace MAIN B’D JK401
NO
YES
21. RGB, HDMI-PC No Audio Problem
HDMI Video OK ?
YES
Check the ADJUST MENU
EDID OK ?
YES
Download EDID.
(Refer to Adjustment Spec.)
NO
Check the HDMI Cable
Replace MAIN B’D IC100.
YES
22. HDMI-DTV No Audio Problem
Check the SCART Cable
YES
Replace MAIN B’D
IC1103
MAIN B’D
R239 (Right Sound)
R240 (Left Sound)
signal ?
NO
YES
Replace MAIN B’D IC 100
Analog TV Audio OK
YES
Check MAIN B’ D JK1100
Replace MAIN B’D JK1100
NO
YES
Check the Trouble Shooting Guide
Analog TV No video
NO
23. AV1 No Audio Out Problem
- 27 -
Check the SCART Cable
YES
Replace MAIN B’D
IC1103
MAIN B’D
R250 (Right Sound)
R251 (Left Sound)
signal ?
NO
YES
Replace MAIN B’D IC 100
Speaker Audio OK
YES
Check MAIN B’D JK1101
Replace MAIN B’D JK1101
NO
YES
Check the Trouble Shooting Guide
Related to Audio Problem
NO
24. AV2 No Audio Out Problem
Check the Headphone Cable
YES
Replace MAIN B'D
IC702
MAIN B'D
R237 (Right Sound)
R238 (Left Sound)
signal ?
NO
YES
Replace MAIN B'D IC 100
Speaker Audio OK
YES
Check MAIN B'D JK700
Replace MAIN B'D JK700
NO
YES
Check the Trouble Shooting Guide
Related to Audio Problem
NO
25. Headphone No Audio Problem
- 28 -
Check the SPDIF Cable
YES
Check MAIN B'D R230
PWM Signal ?
Replace MAIN B'D IC 404
Speaker Audio OK
YES
Check MAIN B'D JK403
Replace MAIN B'D JK403
NO
YES
YES
Check the Trouble Shooting Guide
Related to Audio Problem
NO
Replace MAIN B'D IC 100
NO
26. SPDIF No Audio Problem
Check MAIN B'D
JK405 Pin #1 5V ?
NO
Check MAIN B'D
L807 12V ?
Check that the USB Memory & HDD are supported by Spec
(Refer to User Manual's USB cautions)
YES
Check MAIN B'D
L821 5V ?
Replace MAIN B'D IC808
YES
NO
Replace POWER B'D
YES
YES
Replace MAIN B'D IC 100
Check MAIN B'D
JK405 OK ?
YES
NO
Replace MAIN B'D JK405
27. USB No Connect Problem
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