Pioneer AVIC-X940BT, Service Manual

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AVIC-X940BT/XNUC
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1 2 3 4
1 2 3 4
C
D
F
A
B
E
Check 2: Is VDD5 (VCC33, VCC12) power supply voltage OK?
VDD5 VCC33 (= 3.3V )
VCC12 (= 1.2V )
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 Module No. Specification value Unit
1
VDD5_1 - DGND1
ALL 5.0 ± 0.4 V
2 VCC33_1 - DGND1 ALL 3.3 ± 0.033 V
3
VCC12_1 - DGND1
ALL 1.2 ± 0.015 V
Side A
Fig 2.2: VDD5, VCC33, VCC12 voltage check points
IC1401 FLASH power supply (Data)
IC1402 FLASH power supply (Program)
IC1480 SDRAM power supply
IC1501 DV5 power supply
IC1501 DV5 power supply
IC1004
3.3 V output regulator
IC1953
1.2 V output Regulator
DGND1
VCC12
VCC33
VD5-1