Troubleshooting Guide - Sanyo VPC-X1200GXR Service Manual

5. TROUBLESHOOTING GUIDE

POWER LOSS INOPERTIVE
PW SW ON
(ON/OFF)
YES
LOW
IC302-7
(BOOST4.2V)
HIGH
IC302-6,8
LOW
(BACKUP3.2V)
(AL3.2V)
HIGH
LOW
IC302-5,4
(RESET, BAT_OFF)
HIGH
NO
X3002-1,2
Oscillation
YES
LOW
IC301-51
(POWER_KEY)
PUSH S3501
HIGH
HIGH LOW
HIGH LOW
LOW
IC301-27
(P ON)
HIGH
CL191(VDD1.2)=1.2V
NO
CL251(VDD3)=3.25V
CL522(VDD1.8_ASIC)=1.8V
CL523(VDD1.8_DDR)=1.8V
YES
IC301-13 (CL275)
NO
(MAIN_RESET)
HIGH
YES
NO
X1102-1,3
Oscillation
YES
CHECK IC101
IC212, IC301
CHECK F5001
CHECK IC302
CHECK IC302
CHECK
X3002, R3003,
C3003, C3004
CHECK IC301
CHECK
S3501, RB303
CHECK
IC301, IC501
CHECK
PWA block
CHECK
IC301, IC101,
R1003, C1003
CHECK
IC101, X1102,
R1121, R1122,
C1121, C1122
TAKING INOPERATIVE
PUSH RELEASE
SWITCH
(S5302)
LOW
IC301-52
(S1)
WHEN HALFPRESS
RELEASE
HIGH
HIGH LOW
HIGH LOW
LOW
IC301-26
(S2)
WHEN FULLPRESS
RELEASE HIGH
HIGH LOW
HIGH LOW
WHEN STOROBE
PROHIBITIO N
PHOTOGRAPHY IS
POSSIBLE
YES
CHECK
STA block
- -
23
CHECK
IC301
CHECK
S3502, RB303
CHECK
IC301
CHECK
S3502, RB306
CHECK
NO
DMA block,
IC301