Hi-Fi Circuit - LG LGXBR342 Service Manual

VCR ELECTRICAL TROUBLESHOOTING GUIDE

7. Hi-Fi CIRCUIT

(1) No Sound(EE Mode)
No Sound.
YES
Check the TU Audio of IC801
Pins2, 3.
Check the DVD Audio of IC801
Pins4, 5.
Check the AV1 Audio of IC801
Pins6, 7.
Check the AV2 Audio of IC801
Pins8, 9.
Check the Vcc of IC801 Pins34, 40,
IC802 Pin4.
Check the IIC Clock and DATA at
IC801 Pins42, 43
Check the Audio of IC801 Pins16, 17.
Check the JK601.
YES
YES
YES
NO
NO
NO
Check the RCA Jack.
(JK601 Scart1 Audio in L, R).
NO
Check the VDR MODULE.
(PMD02 Pins27, 29).
YES
NO
NO
NO
3-17
Check the IC701 Pins30, 31.
Check the VDR MODULE.
(PMD02 Pins23, 25).
Check the Power 5.2V, 12V.
Check the IC501 Pins71, 72.
Replace IC801.