
17
STR-DA1000ES/DB790
SECTION 5
ELECTRICAL ADJUSTMENT
BIAS ADJUSTMENT
Condition:
input signal: no signal (no load)
volume:
minimum
Connection
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 2
±
0.5
mV.
Note:
When the adjusting voltage is higher than 2
±
0.5 mV, adjust the
voltage to the minimum voltage.
Adjustment and Connection Loacation:
+
–
digital voltmeter
CN432 (CN482, 532, 582, 632, 682, 732) pin
1
CN432 (CN482, 532, 582, 632, 682, 732) pin
2
RV734
– SBL BOARD (Component Side) –
CN732
1
2
– MAIN BOARD (Component Side) –
RV481
RV631
RV681
RV531
RV581
CN482
CN632
CN682
CN532
CN582
2 1
2 1
2 1
2 1
2 1
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