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5. TROUBLESHOOTING GUIDE
POWER LOSS INOPERTIVE
PUSH THE POWER
SW
IC301-15
NO
CHECK SYA BLOCK
(SCAN IN 0)
PULSE INPUT
YES
NO
CHECK
IC302-7
POWER CIRCUIT
3.7 V
YES
LOW
IC301-17, 29
CHECK IC302
(VDD)
HIGH
LOW
IC301-25
CHECK IC302
(RESET)
HIGH
LOW
IC301-12
CHECK IC303,
(BAT OFF)
D3002, D3003
HIGH
NO
IC301-27
CHECK X3001
OSCILLATION
YES
NO
IC301-24
CHECK X3002,
OSCILLATION
R3009, C3010, C3011
YES
CHECK IC301
TAKING INOPERATIVE
PUSH RELEASE
SWITCH
SB LED IS FLASHING
STROBE CHARGE
YES
WHEN AUTO
INOPERATIVE
LUMINOUS (RED)
CHECK STA BLOCK
NO
CN301-5, 6
NO
CHECK
(SCAN IN 1, 2)
SYA BLOCK
PULSE INPUT
YES
CHECK
DMA BLOCK
Page 18
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