Electrical Adjustment - Sony TA-FA777ES Service Manual

Note: Adjustment should be performed 5 minutes later, after the power
switch is on.
Bias Adjustment
Setting:
ATTENUATOR (Volume) control: minimum
Input signal: No signal input
Procedure:
Adjust RT501 (L-CH) and RT551 (R-CH) for 70 mV reading on
the VTVM.
Adjustment Location:
– MAIN-B (L) Board (Component side) –
RT501
1
3
6
SECTION 3

ELECTRICAL ADJUSTMENT

level meter
(0.3V DC range)
CN504
+
–
L-CH
– MAIN-B (R) Board (Component side) –
RT551
level meter
(0.3V DC range)
CN554
+
3
–
1
R-CH