Pioneer AVH-3400DVD/XUEW5 Service Manual page 35

5
Check 2: Is VDD5 (VCC33, VCC12) power supply voltage OK?
VDD5
IC1004
3.3 V output regulator
IC1953
1.2 V output Regulator
Fig 2.1: Power supply configuration
<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.
No. Check point
VDD5_1 - DGND1
1
2 VCC33_1 - DGND1
VCC12_1 - DGND1
3
Side A
Fig 2.2: VDD5, VCC33, VCC12 voltage check points
5
6
VCC33 (= 3.3V )
VCC12 (= 1.2V )
Module No. Specification value Unit
ALL 5.0 ± 0.4
ALL 3.3 ± 0.033
ALL 1.2 ± 0.015
AVH-3400DVD/XUEW5
6
7
IC1401 FLASH power supply (Data)
IC1402 FLASH power supply (Program)
IC1480 SDRAM power supply
IC1501 DV5 power supply
IC1501 DV5 power supply
V
V
V
DGND1
7
8
A
B
C
VCC12
D
E
VCC33
VD5-1
F
35
8