Onkyo TX-SR603 Service Manual page 62

ADJUSTMENT PROCEDURE-2
IDLING CURRENT ADJUSTMENT
<Fig-1>
U09
AMPLIFIER PC BOARD
(NAAF-8523)
L
Front side
P6080
L
P6080 R6040
Test Trimming
point resistor
C
R
BIAS
BIAS
R6041
R6040
P6081 P6082
R
P6081 R6041
Test Trimming
point resistor
Front side
SBR
SBR
R6046 P6086
Trimming
resistor
SL SR
P6083 R6043 P6084
Test Trimming Test
point resistor point
SL
BIAS
BIAS
R6042 R6043
P6083
C
P6082 R6042
Test Trimming
point resistor
U11
SBR AMPLIFIER
ID- PC BOARD
(NAETC-8525)
ID+
R6046
P6086
BIAS
ID-
ID+
Test
point
TX-SR603/603E/8360
SBL
R6044 P6085 R6045
Trimming Test Trimming
resistor point resistor
SR
SBL
BIAS
BIAS
R6044 R6045
P6084 P6085