LG X-SHOT LDC-A310, Service Manual

Page: 21 / 46

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POWER LOSS INOPERTIVE TAKING INOPERATIVE
NO PICTURE
PUSH THE
POWER SW
NO
YES
YES
HIGH
HIGH
HIGH
YES
YES
OK
OK
OK
NG
NG
NG
NO
LOW
LOW
LOW
NO
NO
IC301-45 (SCAN
IN 3) PULSE
INPUT
IC302-7 3.6 V
(LENS 3.6V)
IC301-10
(VDD)
IC301-36
(RESET)
IC301-43
(BAT OFF)
IC301-40
OSCILLATION
IC301-37
OSCILLATION
CHECK X3002
CHECK X3001
CHECK R3003
CHECK IC302,
R3004
CHECK IC302
CHECK IC955,
Q9551
CHECK S6002,
CN601, CN301
PUSH SHUTTER
BUTTON
IC301-28, 29
(SCAN IN 0, 1)
PULSE INPUT
CN301-5, 6
(P ON, P(A) ON)
SERIAL
COMMUNICATION
CHECK IC301,
CP1 DMA BLOCK
CHECK
IC301, RB301
CHECK S6001,
CN601, CN301,
D3011
CHECK CP1 DMA
BLOCK
CHECK IC301
CLK (98 MHz)
INPUT TO IC101-5
(CLK IN 1)
CLK (48 MHz)
INPUT TO IC101-6
(CLK IN 2)
CHECK IC111
etc.
MAIN CLOCK FOR SYSTEM OPERATION
NO OPERATION IF ABSENT CHECK X1101
OSCILLATOR AND IC111
IC301-15, 16
(ASIC_SO,
ASIC_SI)
INCORRECT HANDSHAKING BETWEEN 8-BIT CPU
AND ASIC CHECK EACH INTERFACE
CHECK SOLDER-
ING OF MEMORY
EACH PIN
YES
HIGH
NO
LOW
NG
OK