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1
Check 2: Is VDD5 (VCC33, VCC12) power supply voltage OK?
A
VDD5
B
<Check> Check the voltage at the "VDD5_1, VCC33_1 and VCC12_1" test point while the power is on.
Check the "DGND1" test point at the reference.
No.
Check point
VDD5_1 - DGND1
1
VCC33_1 - DGND1
2
3
VCC12_1 - DGND1
C
Side A
D
E
F
34
1
2
IC1004
3.3 V output regulator
IC1953
1.2 V output regulator
Fig 2.1: Power supply configuration
Module No.
ALL
ALL
ALL
Fig 2.2: VDD5, VCC33, VCC12 voltage check points
2
3
IC1401 FLASH power supply (Data)
IC1402 FLASH power supply (Program)
VCC33 (= 3.3V )
IC1480 SDRAM power supply
IC1501 DV5 power supply
IC1501 DV5 power supply
VCC12 (= 1.2V )
Specification value Unit
5.0 ± 0.4
3.3 ± 0.033
1.2 ± 0.015
CX-3311
3
4
V
V
V
VCC12_1
VCC33_1
VDD5_1
DGND1
4
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