Troubleshooting Guide - Sanyo IDC-1000ZE Service Manual

7. TROUBLESHOOTING GUIDE

POWER LOSS INOPERTIVE
CHECK ARREY INCLUD-
NO
IC301-58 (SCAN IN 5)
ING POWER SW, FPC,
PULSE INPUT
CN307, R3062, D3003
YES
IC302-7 (UNREG)
LOW
CHECK MORE THAN
6V
HIGH
IC301-81
LOW
(VDD)
CHECK 3.2V
HIGH
LOW
IC301-84 (RESET)
CHECK IC302, R3051
CHECK 3.2V
HIGH
IC301-85
LOW
(BAT OFF)
CHECK 3.2V
HIGH
IC301-80
NO
CHECK
OSCILLATION
YES
IC301-82
NO
CHECK
OSCILLATION
YES
CHECK IC301
TAKING INOPERATIVE
PUSH SHUTTER
BUTTON
IC301-4, 5, 92 CHECK FPC INCLUDING
NO
(SCAN IN 0, 1 SCAN SHUTTER SW, CN302,
OUT 1) PULSE INPUT D3001, R3021, R3022
YES
CHECK IC301, CN301,
CHECK CN301-8, 9
LOW
or IC301-70, 71 CN106, CN104, CN107,
(P ON, PA ON) R3005, R3006, PW1, PW2
HIGH
CHECK CN301-7, 20,
LOW
21 (ASIC TEST 0, 1 IC301, CA2 (IC102,
RESET) IC121 etc.), PW1
HIGH
CHECK SERIAL
NG
COMMUNICATION
IC301, CA2 (IC102,
(IC102-139~142,
IC301-75~78)
OK
CHECK CA2, MC3
CHECK PW1
(FUSE PR502)
CHECK IC302
CHECK R3052
CHECK X3001
CHECK
X3002, R3004,
C3001, C3002
CHECK
CHECK
IC121 etc.)
NO PICTURE (USB)
CHECK OSCILLA- CLK FOR SYSTEM OPERATION
NO
NO OPERATION IF ABSENT
TION IC111-9 MAIN
CHECK X1101 OSCILLATOR, R1105 AND IC111
CLK (114MHz)
YES
CHECK OSCILLA- CLK FOR USB COMMUNICATION
NO
TION IC111-14 CLK NO OPERATION IF ABSENT
CHECK X1101 OSCILLATOR, R1103 AND IC111
(96MHz)
YES
CHECK OSCILLATION
NO
IC106, IC107-38, IC103-
35 SDRAM CLK (57MHz)
YES
CHECK SERIAL INCORRECT HANDSHAKING BETWEEN 8-BIT
NO
SIGNAL IC102- CPU (IC301) AND ASIC (IC102)
139~142, IC301-75~78 CHECK IC301, R3001
YES
USB CONNECTION RECOGNITION
HIGH
CHECK IC301-88
SIGNAL TO PC
(USB CONNECT)
CHECK IC301, R3006, Q1304, R1309
LOW
USB CONNECTION RECOGNITION
LOW
CHECK IC102-100
SIGNAL TO PC
(Q1307 COLLECTOR)
CHECK IC102, R1307, Q1307
HIGH
USB CONNECTION START
LOW
CHECK Q1305-2
SIGNAL FROM ASIC
(USB ON)
CHECK IC102
HIGH
CHECK SOLDER OF Q1305,
Q1306, R1308, R1355, R1359,
R1313, R1350, R1312, CN105
NO PICTURE (IEEE1394)
CLK FOR SYSTEM OPERATION
CHECK OSCILLA-
NO
NO OPERATION IF ABSENT
TION IC111-9 MAIN
CHECK X1101 OSCILLATOR, R1105 AND IC111
CLK (114MHz)
YES
CLK FOR USB COMMUNICATION
CHECK OSCILLA-
NO
NO OPERATION IF ABSENT
TION IC111-14 CLK
CHECK X1101 OSCILLATOR, R1103 AND IC111
(96MHz)
YES
CHECK OSCILLATION
NO
IC106, IC107-38, IC103-
35 SDRAM CLK (57MHz)
YES
CHECK SERIAL INCORRECT HANDSHAKING BETWEEN 8-BIT
NO
SIGNAL IC102- CPU (IC301) AND ASIC (IC102)
139~142, IC301-75~78 CHECK IC301, R3001
YES
CHECK OSCILLA- CLOCK FOR IC402
NO
TION X4001-3 (MC3)
CHECK X4001,
(24.576 MHz)
R4801, R4802
YES
CHECK SOLDER of
IC402, JK404,
R4011~R4015, IC404
– 30 –
SDRAM (IC106, IC107, IC103) MOVEMENT
CLOCK. NO READ PROGRAM FROM IC121 IF
ABSENT. CHECK IC102, IC106, IC107, IC103.
SDRAM (IC106, IC107, IC103) MOVEMENT
CLOCK. NO READ PROGRAM FROM IC121 IF
ABSENT. CHECK IC102, IC106, IC107, IC103.