Pioneer AVH-P3100DVD/XN/UC Service Manual page 40

1
QQ
Check 2: Is VDD5 (VCC33, VCC12) power supply voltage OK?
3 7 63 1515 0
A
V D D 5
IC1004
3.3 V output regulator
IC1005
DC/DC converter
1.2 V output
<Check> Check the voltage at the "VDD5_1, VCC33_1 and VCC12_1" test point while the power is on.
Use the "DGND1" test point at the reference.
B
NO. Check point
1 VDD5_1 - DGND1
2 VCC33_1 - DGND1
3 VCC12_1 - DGND1
Side A
C
TE
L 13942296513
D
Fig 2.2: VDD5, VCC33, VCC12 voltage check points
E
www
F
40
1
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2
VCC33 (= 3.3 V)
VCC12 (= 1.2 V)
Fig 2.1: Power supply configuration
Module No.
ALL
ALL
ALL
VDD5_ 1
x ao
y
. i
AVH-P3100DVD/XN/UC
2
http://www.xiaoyu163.com
3
8
IC1401 FLASH power supply (Data)
IC1402 FLASH power supply (Program)
IC1481 SDRAM power supply
IC1501 DV5U power supply
IC1501 DV5U power supply
Specification value Unit
5.0 ± 0.4 V
3.3 ± 0.15 V
1.2 ± 0.12 V
Q Q
3 6 7 1 3
u163
.
3
4
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
VCC33_ 1
VCC12_ 1
DGND1
m
co
4
9 9
2 8 9 9