TX-DS494/HT-R490
Front Rch
Front Lch
Surround Lch
Surround Rch
Center ch
Front side
Front side
R574
P511
R573
P512
R674
P612
R673
P611
P1511
R1532
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
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