Hi-Fi Circuit - LG V9120W Service Manual

5. Hi-Fi CIRCUIT

(A) 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 AV3 Audio of IC801
Pins10, 11.
Check the Vcc of IC801 Pins34, 40,
IC802 Pin13.
Check the IIC Clock and DATA at
IC801 Pins42, 43.
Check the Audio of IC801 Pins16, 17.
Check the Audio of IC802 Pins1, 14.
Check the JK902.
YES
YES
YES
YES
NO
NO
NO
NO
YES
NO
NO
NO
NO
3-15
Check the IC751 Pins30, 31.
Check the DVD Audio OUT.
(JK902 DVD_A_L_L/R).
Check the JK902.
Check the front Jack.
Check the Power 5.0V, 12VT.
Check the IC501 Pins17, 18.
Replace IC801.
Replace IC802.