Filter
Top Products
4. TROUBLESHOOTING GUIDE
POWER LOSS INOPERTIVE
BARRIER SW
BARRIER SW ON
NORMAL
IC301-4, 93
CHECK S6002,
CN302, D3069, R3021
IC302-7 (UP UNREG)
CHECK IC132, PW1
IC301-81
(VDD)
IC301-84
(RESET)
CHECK IC302
CHECK IC302, R3051
IC301-85
(BAT OFF)
CHECK R3052
IC301-80
OSCILLATION
CHECK X3001
IC301-82
OSCILLATION
CHECK X3002,
R3004, C3001, C3002
CHECK IC301
NO PICTURE
MAIN CLOCK FOR SYSTEM OPERATION
NO OPERATION IF ABSENT
CHECK IC111, L1101, L1105 and X1101
CLK (114MHz)
OSCILLATION
CHECK L1105
SD CLK (57 MHz)
OSCILLATION
IC106-35
IC101-111, 114
(IC301-75, 76)
CHECK ASIC AND
MEMORY PIN
INCORRECT HANDSHAKING BETWEEN 8-BIT
CPU AND RS-232C
CHECK EACH INTERFACE
PUSH SHUTTER
BUTTON
IC301-4, 5
(SCAN IN 0, 1)
PULSE INPUT
CHECK
S3029, D3064,
R3021, R3022
IC301-70, 71
(P ON, P(A) ON)
CHECK IC301
IC301-96, 97, 98
HIGH
CHECK IC301, IC101
SERIAL
COMMUNICATION
IC301-75~77, 87
CHECK IC301,
R3001, R3003, IC101
CHECK IC101
TAKING INOPERATIVE
LOW
CLOSE
HIGH
LOW
LOW
LOW
NO
NO
OPEN
LOW
HIGH
HIGH
HIGH
HIGH
YES
YES
YES
YES
OK
NG
NG
YES
YES
HIGH
YES
OK
NO
LOW
NO
NG
MAIN CLOCK FOR SDRAM (IC106)
NO OPERATION IF ABSENT FROM IC121
CHECK IC101, IC106 and C1061