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5. TROUBLESHOOTING GUIDE
POWER LOSS INOPERTIVE
SET THE MAIN
SWITCH ON
IC301-51
(SCAN IN4)
PULSE INPUT
CHECK S3302
IC302-7 4.7 V
(BOOST 4.7 V)
CHECK IC531, Q5301
IC301-59
(VDD)
IC301-53
(RESET)
CHECK IC302
CHECK IC302, RB305
IC301-49
(BAT OFF)
CHECK IC302, RB305
IC301-58
OSCILLATION
CHECK X3001
IC301-55
OSCILLATION
CHECK X3002
CHECK IC301
PUSH SHUTTER
BUTTON
IC301-17, 20
(SCAN IN 0, 1)
PULSE INPUT
CHECK S3301
IC301-40
(P ON)
CHECK IC301
SERIAL
COMMUNICATION
CHECK IC301,
CP1 DMA BLOCK
CHECK CP1 DMA
BLOCK
TAKING INOPERATIVE
NO
YES
LOW
LOW
LOW
NO
NO
NO
YES
HIGH
HIGH
HIGH
YES
YES
YES
HIGH
OK
NO
LOW
NG
NO PICTURE
CLK (48 MHz)
OSCILLATION
CHECK X1102
IC301-63, 64
(ASIC_SO, ASIC_SI)
CHECK CP1
INCORRECT HANDSHAKING
BETWEEN 8-BIT CPU AND ASIC
CHECK EACH INTERFACE
OK
OK
NG
NG