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