Idle Current Adjustment - Pioneer VSX-820-K Service Manual

1

8.2 IDLE CURRENT ADJUSTMENT

QQ
3 7 63 1515 0
A
1. Idle Current Adjustment
Measurement Points
TP201FL 3PIN : TEST POINT(+)
TP201FL 1PIN : TEST POINT(-)
TP201FR 3PIN : TEST POINT(+)
TP201FR 1PIN : TEST POINT(-)
B
TP201C 3PIN : TEST POINT(+)
TP201C 1PIN : TEST POINT(-)
TP201SL 3PIN : TEST POINT(+)
TP201SL 1PIN : TEST POINT(-)
TP201SR 3PIN : TEST POINT(+)
TP201SR 1PIN : TEST POINT(-)
• Adjustment Point and Measurement Points.... see fig1.
C
B
AMP ASSY
TE
L 13942296513
Idle current
VR: VR201FR
D
E
TP201FR 3PIN
www
TEST POINT(+)
TP201FR 1PIN
TEST POINT(-)
F
62
1
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2
Adjustment
VR201FL
VR201FR
VR201C
VR201SL
VR201SR
TP201SR 1PIN TP201C 1PIN
TEST POINT(-) TEST POINT(-)
Idle current Idle current
VR: VR201SR VR: VR201C
TP201SR 3PIN
TEST POINT(+)
x ao
y
. i
2
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3
8
Points
1 Turn on the power.
2 Perform aging for one minute.
3 Connect a digital voltmeter to the measurement point.
4 Turn the adjustment VR so that the voltage becomes
in 2.0 mV ± 0.2 mV.
(Condition : No signal and no load)
Q Q
3 6 7
TP201SL 1PIN
TEST POINT(-)
Idle current
VR: VR201SL
TP201C 3PIN TP201SL 3PIN
TEST POINT(+) TEST POINT(+)
u163
[Fig 1.]
VSX-820-K
3
4
2 9 9 4
Procedure
1 3 1 5 0 5 8 2 9
TP201FL 1PIN
TEST POINT(-)
Idle current
VR: VR201FL
TP201FL 3PIN
m
TEST POINT(+)
co
.
4
2 8
9 9
SIDE A
9 4 2 8 9 9