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5. TROUBLESHOOTING GUIDE
POWER LOSS INOPERTIVE
PUSH THE POWER
SW FOR A WHILE
IC101-V21
KEY_POWER
INPUT
CHECK POWER SW
IC101-T16, R16
(AL3.2)
IC501-F3
(PON)
CHECK IC501
CHECK IC101
IC501-D4, F1, F2
(VDD3)
CHECK IC501
IC501-H1, G2
VDD1.8
CHECK IC501
CHECK IC101
PUSH SHUTTER
BUTTON
IC101-AB22, AB23,
P22
KEY INPUT
CHECK UNIT SW
IC501-F3 (PON)
IC901-3 (PAON1)
IC902-1(PAON2)
CHECK IC101,
PWA BLOCK,
CAA BLOCK
SERIAL
COMMUNICATION
CHECK
CP1 DMA BLOCK
CHECK CP1 DMA
BLOCK
TAKING INOPERATIVE
OFF
LOW
LOW
NG
NG
ON
HIGH
HIGH
OK
OK
YES
HIGH
OK
NO
LOW
NG
NO PICTURE
MAIN CLOCK FOR SYSTEM OPERATION
NO OPERATION IF ABSENT
CHECK X1102 OSCILLATOR
IC101-A3 (XOUT)
CHECK
OSCILLATION
CHECK SOLDERING
OF MEMORY
EACH PIN
OK
NG
IC501-A7, B7, C6
VDD1.1
CHECK IC501
NG
OK