Onkyo TX-DS494 Service Manual page 30

ADJUSTMENT PROCEDURES
IDLING CURRENT ADJUSTMENT
1. Before Idling adjustment, turn the trimming resistors R573, R574, R673, R674 and R1532 to counter clockwise.
2. Connect the DC voltmeter to sockets P511,P512, P611, P612 and P1511.
3. After turn POWER to ON, adjust the trimming resistors R573, R574, R673, R674 and R1532 so that the reading
of voltmeter becomes 2.4 to 2.6 mV.
4. After adjustment, attach the top cover.
5. Confirm the voltage of above points after five minutes.
6. When 3.1 mV to 6.4 mV : Readjust the trimming resistors above so that the voltage becomes 6.5 to 6.7 mV.
When 6.5 mV to 7.5 mV : It is not necessary to adjust.
When 7.6 mV to 13 mV : Readjust the trimming resistors above so that the voltage becomes 7.5 to 7.7 mV.
[Note] No load and No signal
Front Lch
R1532
P1511
Center ch
P511
R573
Front side
P612
Surround Rch
Front Rch
P512
R574
R673
R674
TX-DS494/HT-R490
Front side
P611
Surround Lch