Pioneer DVH-335UB/XNRC Service Manual page 36

1
Check 7: Is VD8, VCC5 power supply voltage OK?
A
VD8_1
F.E. driver system
IC1002
VD8_2
REG IC
for VCC 5 V.
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
D
VD8_ 1
VD
E
Fig 7.2: VD8, VCC5 voltage check points
F
36
1
2
VCC5 (= 5.0 V)
Module No. Specification value
ALL 8.0 ± 0.4
ALL 8.0 ± 0.4
ALL 5.0 ± 0.1
PGND3
DVH-335UB/XNRC
2
3
Power supply
for PU
Unit
V
V
V
AGND3
VCC5_ 1
PGND1
3
4
4