Adjustment Procedure - Onkyo HT-RC660(B) Service Manual

ADJUSTMENT PROCEDURE

ADJUSTMENT OF IDLING CURRENT
Applied to the following model.
(Model) TX-NR636/ DTR-30.6/ HT-RC660/ HT-R993
Procedure
a. Pre-adjustment
Set the following registers to minimum position before POWER ON.
Set the voltages at the following terminals to the following voltage by adjusting the following registers, under the condition of
no input and no load, immediately after POWER ON.
Channel
Terminals
Registers
Voltage
b. Aging
Heat run during the following time.
Time
c. Final adjustment
Re-adjust by the following procedure after heat running for the above mentioned time.
L/C/R
Below 9mV
Between
Over 11mV
SL/SR/SBL(SW)/SBR
Below 6mV
Between
Over 8mV
Adjustment point
Equip series 1/4W 100-ohm resisters near the terminal respectively in each pole of the jig used for the above mentioned terminals.
BACLA-1575
R5446 R5445 R5444
Top
SBR
Test point
P6086 P6085
SBR SBL
Front
L/C/R
2.5mV
9mV
Do not adjust.
11mV
6mV
Do not adjust.
8mV
R5442
R5443
C
SBL SR SL
P6084 P6083 P6082
SR SL
BAAF-1511
TX-NR636/ DTR-30.6/ HT-RC660/ HT-R993
SL/SR/SBL/SBR
1.5mV
R5441 R5440
L
R
P6081 P6080
C R L
Connection
100ohms,
1/4W
DC Volt meter
AVR