43
VSX-523-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
8.3 IDLE CURRENT ADJUSTMENT
JP
9
JP
2
9
JP
3
9
JP
4
5
JP
6
1
JP
5
5
JP
7
7
V
R1FL
V
R1SL
TP1FL
V
R1C
TP1C
TP1SR
V
R1FR
TP1FR
JP
8
JP
2
3
V
R1SR
TP1SL
(SL)
(SL)
C
2
4SL
10/100
R35SL
10K
R2SL
470K
R3SL
22K
C30SL
8
2P-50
V
R14SL
1K2(1)
R15SL
JUMPER
C17SL
-
47K
R3
8
SL
R5SL
150K
ZD1SL
ZJ5.1A
2
N
2-K
C13SL
R41SL
150
C
8
SL
-
R6SL
100K
R
8
SL
1K2
D1
SL
-
D2
SL
-
R10SL
33K
KSA992
F
Q3S
L
-
R11SL
100/50
C12SL
C1
0
S
L
47P-100
V
R7SL
2K7
R16SL
47(1)
KTC3206Y
Q4SL
R23SL
560
1K(B)-
V
V
R1
SL
R21SL
2K7
C2
3
S
L
-
R27SL
0R47(2)
R29SL
0R47(2)
10K
R3
1
S
L
R36SL
5K6
C27SL
-
R34SL
270K
100
N
-K
C29SL
22K
R39SL
C1
SL
100P
/100
V
100P/100
V
C2
SL
R1SL
1K2
C4SL
22/50
C1
4
S
L
100P/100
V
R4SL
1K5
C6SL
100P-100
V
C7SL
47P-100
V
R12SL
-
R13SL
1K1
R19SL
7K5(1)
1
3
2
20010
W
R-03
TP1SL
R37SL
-
C
2
0SL
47/50
C16SL
-
100P/100
V
C15SL
R42SL
270
C1
8
SL
-
R1
8
SL
-
KSA992F
Q2SL
TD03G333FT
R9SL
JUMPER
47P-100
V
C9SL
22P-500
V
C11SL
10/100
C2
5
S
L
C2
6
S
L
-
C22SL
100P-500
V
R22SL
-
0R47(2)
R26SL
R2
8
SL
0R47(2)
ZD3SL
ZJ4.3B
D3SL
1
N
414
8
D4SL
1
N
414
8
R20SL
7K5(1)
R24SL
100(1)
2SD2390
Q6SL
10K
R3
0
S
L
ZD2SL
ZJ4.3B
D5SL
LBAS16HT1G
Q
8
SL
2
N
5401S
R32SL
390K
C5SL
560P-50
V
C3SL
10/50
-
R17SL
KTA1024Y
Q1SL
R25SL
100(1)
Q7SL
2SB1560
Q5SL
KTC3964
47/50
C19SL
C21SL
100P-500
V
Q9SL
2SC3052
R33SL
DHPTHF160
8
_471P95T
• Adjustment points and measurement points.... see fig.1.
AMP5 ASSY
Fig.1
G
SIDE A
Adjustment
Points
Procedure
Measurement
Points
Channel
TP1FL pin 1 (+)
TP1FL pin 3 (–)
1
Turn on the power.
2
Perform aging for one minute.
3
Connect a digital voltmeter to the measurement point.
4
Turn the adjustment
V
R so that the voltage becomes
in 2.0 m
V
± 0.2 m
V
.
(Condition :
N
o signal and no load)
V
R1FL
TP1FR pin 1 (+)
TP1FR pin 3 (–)
V
R1FR
TP1C pin 1 (+)
TP1C pin 3 (–)
V
R1C
TP1SL pin 1 (+)
TP1SL pin 3 (–)
V
R1SL
TP1SR pin 1 (+)
TP1SR pin 3 (–)
V
R1SR
FL
FR
C
SL
SR
V
R1FL
V
R1SL
V
R1C
V
R1SR
V
R1FR
TP1FL
TP1SL
TP1C
TP1SR
TP1FR
W
hen any component parts which are within the red square on the following circuit diagram are replaced, the idle current
adjustment of that channel is required. (Idle current adjustment for another channel is not required.)
However, when any capacitors are replaced, the adjustment is not required.
(The following circuit diagram is for SL channel, but another channel also has same circuit diagram and same adjustment is
required)
jomi