Electrical Adjustments - Sony STR-DA3100ES Service Manual

STR-DA3100ES
BIAS ALIGNMENT ADJUSTMENT
Condition:
function: MULTI CH
input signal: no signal (no load)
volume: 0 dB
Note: Afer 10 minutes or more have passed since the power supply
was turned on, this adjustment is done.
Connection
TP501 (TP551, TP601, TP651, TP652, TP701, TP751) pin 1
TP501 (TP551, TP601, TP651, TP652, TP701, TP751) pin 2
Procedure:
1. Connect a digital voltmeter to the TP501 (TP551, TP601, TP651,
TP652, TP701, TP751) on the AMP board.
2. Press the button to turn on the main power.
I/1
3. Adjust the RV501 (RV551, RV601, RV651, RV652, RV701,
RV751) so that the digital voltmeter reading is ±3.5+0.45 mV.
Adjustment and Connection Location:
– AMP Board (Component Side) –
1 2
TP501
RV501
1 2
RV701
TP701
12
SECTION 5

ELECTRICAL ADJUSTMENTS

digital voltmeter
1 2
RV652 TP652
1 2
RV651
TP651
+
–
RV551
RV601
1 2
RV751
TP601
1 2
TP551
1 2
TP751