Pioneer AVH-P7900DVD Service Manual page 52

1
Check 7: Is VD8, VCC5 power supply voltage OK?
A
VD8_1
VD
Fig 7.1: Power supply configuration
B
<Check> Check the voltage at the "VD8_1, VD and VCC5_1" test point while the power is on.
Use the "PGND3 and AGND1" test point at the reference.
NO. Check point
1 VD8_1 - PGND3
2 VD - PGND3
3 VCC5_1- AGND1
Side A
C
PGND3
D
Fig 7.2: VD8, VCC5 voltage check points
E
F
52
1
2
F.E. driver system
DISC detection LED
IC1004
VCC5 (= 5.0 V )
REG IC
for VCC 5 V.
Module No.
ALL
ALL
ALL
AVH-P7900DVD/RE
2
3
Power supply
for PU
Specification value Unit
8.0 ± 0.4
V
8.0 ± 0.4
V
5.0 ± 0.1
V
VD8_1
VD
AGND1
VCC5_1
3
4
4