Troubleshooting Guide - Sanyo VPC-CA102BK Service Manual

5. TROUBLESHOOTING GUIDE

POWER LOSS INOPERTIVE
PUSH THE POWER
SW FOR A WHILE
IC101-V21
OFF
CHECK POWER SW
KEY_POWER
INPUT
ON
LOW
IC101-T16, R16
(AL3.2)
HIGH
LOW
IC501-F3
(PON)
HIGH
NG
IC501-D4, F1, F2
(VDD3)
OK
NG
IC501-H1, G2, A4
VDD1.8
OK
NG
IC501-A7, B7, C6
VDD1.1
OK
CHECK IC101
NO PICTURE
MAIN CLOCK FOR SYSTEM OPERATION
IC101-A3 (XOUT)
NG
NO OPERATION IF ABSENT
CHECK
CHECK X1102 OSCILLATOR
OSCILLATION
OK
CHECK SOLDERING
OF MEMORY
EACH PIN
CHECK IC501
CHECK IC101
CHECK IC501
CHECK IC501
CHECK IC501
TAKING INOPERATIVE
PUSH SHUTTER
BUTTON
IC101-AB22, AB23
KEY INPUT
IC501-F3 (PON)
IC901-3 (PAON1)
IC902-1(PAON2)
SERIAL
COMMUNICATION
CHECK CP1 DMA
BLOCK
– 26 –
NO
CHECK BACK FPC
YES
CHECK IC101,
LOW
PWA BLOCK,
CAA BLOCK
HIGH
NG
CHECK
CP1 DMA BLOCK
OK