Samsung MAX-670 - No Output

AQ OC2,OC8 pin no.7 ;
Main PCB OC2,OC8
(STK4221), pin no.11,13
; B+,B circuits
Check the B+ power
source part in PBD2(GBU6D),
PC1 and PC2.
O
O
O
Is Mute selected ?
Confirm for TR short
Replace it
Remove it with Remocon
O
X
Check if the output line is
short
X
X
X
B- (-0.3V)
Check the mute
circuit OQ1(KSR2003)
base B+ (0V)
X
Replace OD8
Replace OQ1
O
OQ4,OQ2
Base B+ ?
O
Headphone jack
Short ?
Replace Headphone jack
X
soldering condition
O
Front PCB
µ-com pin no.5 ;
Check the "H"
Replace µ-com
X
Samsung Electronics 6-3
Troubleshooting
6-1-3 No Output