Pioneer VSX-1020-K, Service Manual

Page: 53 / 132

53
VSX-1020-K
5 6 7 8
5 6 7 8
A
B
C
D
E
F
8 .2 IDLE CURRENT ADJUSTMENT
B
1. Idle Current Adjustment
• Adjustment Point and Measurement Points .... see fig1.
AMP ASSY
[Fig. 1]
SIDE A
Idle current
V R: V 1201 FL
TP1201 FL 1 PI N
TEST POI N T (–)
TP1201 FL 3 PI N
TEST POI N T (+)
TP1201 SBR 3 PI N
TEST POI N T (+)
TP1201 SBR 1 PI N
TEST POI N T (–)
TP1201 SBL 3 PI N
TEST POI N T (+)
TP1201 SBL 1 PI N
TEST POI N T (–)
TP1201 FR 3 PI N
TEST POI N T (+)
TP1201 FR 1 PI N
TEST POI N T (–)
Idle current
V R: V 1201 C
Idle current
V R: V 1201 SR
Idle current
V R: V 1201 FR
Idle current
V R: V 1201 SBL
Idle current
V R: V 1201 SBR
Idle current
V R: V 1201 SL
TP1201 C 3 PI N
TEST POI N T (+)
TP1201 C 1 PI N
TEST POI N T (–)
TP1201 SR 3 PI N
TEST POI N T (+)
TP1201 SR 1 PI N
TEST POI N T (–)
TP1201 SL 1 PI N
TEST POI N T (–)
TP1201 SL 3 PI N
TEST POI N T (+)
Measurement Points
Adjustment
Points
Procedure
V 1201 FL
TP1201 FL 3PI N : TEST POI N T(+)
TP1201 FL 1PI N : TEST POI N T(–)
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 1201 FL
TP1201 FR 3PI N : TEST POI N T(+)
TP1201 FR 1PI N : TEST POI N T(–)
V 1201 C
TP1201 C 3PI N : TEST POI N T(+)
TP1201 C 1PI N : TEST POI N T(–)
V 1201 SL
TP1201 SL 3PI N : TEST POI N T(+)
TP1201 SL 1PI N : TEST POI N T(–)
V 1201 SR
TP1201 SR 3PI N : TEST POI N T(+)
TP1201 SR 1PI N : TEST POI N T(–)
V 1201 SBL
TP1201 SBL 3PI N : TEST POI N T(+)
TP1201 SBL 1PI N : TEST POI N T(–)
V 1201 SBR
TP1201 SBR 3PI N : TEST POI N T(+)
TP1201 SBR 1PI N : TEST POI N T(–)