Electrical Adjustment - Sony STR-DA1000ES Service Manual

BIAS ADJUSTMENT
Condition:
input signal: no signal (no load)
volume: minimum
Connection
CN432 (CN482, 532, 582, 632, 682, 732) pin 1
CN432 (CN482, 532, 582, 632, 682, 732) pin 2
Procedure:
1. Connect a digital voltmeter to the CN432 (CN482, CN532,
CN582, CN632, CN682) on the MAIN board or CN732 on the
SBL board (STR-DA1000ES only).
2. Press the I/1 button to turn on the main power.
3. Adjust the RV431 (RV481, RV531, RV581, RV631, RV681)
on the MAIN board or RV731 on the SBL board (STR-
DA1000ES only) so that the digital voltmeter reading is 5±1
mV.
Adjustment and Connection Loacation:
– MAIN BOARD (Component Side) –
RV431
CN432
2 1
SECTION 5

ELECTRICAL ADJUSTMENT

digital voltmeter
+
–
CN482
RV481
RV631
CN632
2 1
2 1
STR-DA1000ES/DB790
– SBL BOARD (Component Side) –
RV734
CN532
RV681 RV531
CN682
2 1
2 1
1
CN732
2
RV581
CN582
2 1
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