Sanyo VPC X 360 E, VPC-X360, VPC-X360EX 4. TROUBLESHOOTING GUIDE, LOW, YES, YES, YES, YES, YES, YES, YES, OPEN, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, CLOSE, NORMAL, － 20 －, NO PICTURE

4. TROUBLESHOOTING GUIDEPOWER LOSS INOPERTIVECLOSE

BARRIER SW		BARRIER SW ON	NORMAL
OPEN
IC301-4, 93	HIGH	CHECK S6002,
		CN302, D3069, R3021
LOW
IC302-7 (UP UNREG)	LOW	CHECK IC132, PW1
HIGH
IC301-81	LOW	CHECK IC302
(VDD)
HIGH
IC301-84	LOW	CHECK IC302, R3051
(RESET)
HIGH
IC301-85	LOW	CHECK R3052
(BAT OFF)
HIGH
IC301-80	NO	CHECK X3001
OSCILLATION
YES
IC301-82	NO	CHECK X3002,
OSCILLATION		R3004, C3001, C3002

YES

CHECK IC301

NO PICTURE

CLK (114MHz)	YES	MAIN CLOCK FOR SYSTEM OPERATION
OSCILLATION		NO OPERATION IF ABSENT
CHECK L1105		CHECK IC111, L1101, L1105 and X1101
YES
SD CLK (57 MHz)	NG	MAIN CLOCK FOR SDRAM (IC106)
OSCILLATION		NO OPERATION IF ABSENT FROM IC121
IC106-35		CHECK IC101, IC106 and C1061
YES
IC101-111, 114	NG	INCORRECT HANDSHAKING BETWEEN 8-BIT
		CPU AND RS-232C
(IC301-75, 76)
		CHECK EACH INTERFACE
OK
CHECK ASIC AND
MEMORY PIN

TAKING INOPERATIVE

PUSH SHUTTER

BUTTON

IC301-4, 5	NO	CHECK
(SCAN IN 0, 1)		S3029, D3064,
PULSE INPUT		R3021, R3022
YES
IC301-70, 71	LOW	CHECK IC301
(P ON, P(A) ON)
HIGH
IC301-96, 97, 98	NO	CHECK IC301, IC101
HIGH
YES
SERIAL	NG	CHECK IC301,
COMMUNICATION
		R3001, R3003, IC101
IC301-75~77, 87
OK
CHECK IC101

－ 20 －