– 23 –
5. TROUBLESHOOTING GUIDE
POWER LOSS INOPERTIVE
PW SW ON
(ON/OFF)
IC302-7
(BOOST 3.8 V)
CHECK F5001
IC302-6, 8
(BACKUP 3.2 V,
AL3.2 V)
CHECK IC302
IC301-6, 1
(RESET, BAT_OFF)
IC301-7, 8
OSCILLATION
CHECK IC302
CHECK X3002,
R3001, C3003, C3004
IC301-23
(POWER_KEY)
PUSH S3302
HIGH
→
LOW
CHECK IC301
CHECK S3302,
RB332, CN301,
CN651
PUSH SHUTTER
BUTTON S3303
TAKING INOPERATIVE
LOW
LOW
LOW
N O
LOW
HIGH
HIGH
HIGH
HIGH
YES
HIGH
→
LOW
IC301-30
(P ON)
CHECK IC301, IC501
LOW
HIGH
CL191 (VDD1.2) = 1.2 V
CL190 (VDD3) = 3.25 V
CHECK PWA BLOCK
N O
YES
IC301-17 (CL179)
(MAIN_RESET)
HIGH
CHECK IC301, IC101,
RB101, C1009
N O
YES
IC301-3
(PLLEN)
CHECK IC301
LOW
HIGH
X1102-1, 3
OSCILLATION
CHECK IC101,
X1102, R1121,
R1122, C1121, C1122
N O
YES
CHECK IC101, IC121,
IC301
IC301-64 (S1)
PUSH SHUTTER
HALFWAY
HIGH
→
LOW
CHECK IC301
CHECK S3303,
RB332, CN301,
CN651
LOW
HIGH
HIGH
→
LOW
IC301-24 (S2)
PUSH SHUTTER
ALL THE WAY
HIGH
→
LOW
CHECK IC301
CHECK S3303,
RB332, CN301,
CN651
LOW
HIGH
HIGH
→
LOW
FLASH OFF MODE
SHOOTING
POSSIBLE
CHECK DMA BLOCK,
IC301
N O
YES
CHECK STA BLOCK
