When Playing Disc, No Audio Output - LG RH-2320 Service Manual

5. WHEN PLAYING DISC, NO AUDIO OUTPUT

Check
Q808, Q809, Q810, Q801
Check
IC902 Pin 8
(12VT)
YES
Replace IC902
LGE Internal Use Only
When playing DISC, no Audio output
IC904 Pin 14, 15 :
Is there a signal?
YES
IC904 Pin 1, 16
NO
(Z_MUTE R/L) :
IC701 Pin 24
(A_MUTE_L) :
YES
NO
IC902 Pin 1, 7 :
Is there a signal
YES
IC801 Pin 34, 35,
37, 38 : Is there
a signal?
YES
L804, L808,
L820, L821 :
Is there a signal?
YES
Check
cable connections &
TV audio mute.
Check
IC904 Pin 5, 6,
NO
7, 8 :
Pin 3, 4 (Host CLK
& DATA) :
Check
.
IC904 Pin 11 (5VD)
Replace IC904
Check
IC801 Pin 14
NO
(12V) Pin 30 (5, 3V)
Pin31, 32
(SCL, SDA) :
3-10 Copyright © 2008 LG Electronics. Inc. All right reserved.
NO
.
IC1101 defect
YES
YES
Replace
NO
IC801
Only for training and service purposes