– 21 –
5. TROUBLESHOOTING GUIDE
POWER LOSS INOPERTIVE
PW SW ON
(ON/OFF)
CL523
(BOOST 5.3 V)
CHECK F5001
IC181-D1
(AL3.2 V)
CHECK IC501
X1801-1, 4
OSCILLATION
CHECK X1801,
C1816, C1817
IC101-AB23
(POWER_KEY)
PUSH S3501
HIGH
→
LOW
CHECK IC101
CHECK S3501,
RB104
PUSH SHUTTER
BUTTON (S3502)
TAKING INOPERATIVE
LOW
LOW
N O
LOW
HIGH
HIGH
HIGH
YES
HIGH
→
LOW
IC101-AD21
(P ON)
CHECK IC101, IC501
LOW
HIGH
CL191 (VDD1.1) = 1.1 V
CL251 (VDD3) = 3.25 V
CL259 (VDD1.8) = 1.8 V
CHECK PWA BLOCK
N O
YES
X1102-1, 3
OSCILLATION
CHECK IC101,
X1102, R1121,
R1122, C1121, C1122
N O
YES
CHECK IC101
IC101-AB21 (S1)
PUSH SHUTTER
HALFWAY
HIGH
→
LOW
CHECK IC101
CHECK S3502,
RB104
LOW
HIGH
HIGH
→
LOW
IC101-AB22 (S2)
PUSH SHUTTER
ALL THE WAY
HIGH
→
LOW
CHECK IC101
CHECK S3502,
RB104
LOW
HIGH
HIGH
→
LOW
FLASH OFF MODE
SHOOTING
POSSIBLE
CHECK PWA BLOCK,
IC101
N O
YES
CHECK ST1 BOARD
