4 - 2
Troubleshooting > Trouble Diagnosis
4-1-2 Trouble diagnosis flowchart
(1) No video (luminance) signal
Refer to "(3) No power"
TL1530: 5V
OK
NG
TL1531: 3V
OK
TL1532: 2V
OK
TL1533: 15V
OK
TL1534: -6.5V
OK
TL1510: 7.2V
OK
OK
NG
TL1525:
Luminance signal
IC1601 faulty
OK
NG
TL1002:
CCD output signal
OK
IC1101-26:
CCD output signal
C1105 faulty or connect
the connections of circuit
boards.
OK
IC1101-43, 44, 45:
Pulses
IC1201 faulty.
OK
IC1101-16, 17,
18, 19: Pulses
IC1121 faulty.
OK
IC1101-2 to 11:
Pulses
IC1101 faulty.
NG
OK
Q1102-B:
Luminance signal
IC1121 faulty.
NG
Q1102 faulty.
OK
TL1154: 3V
Q1103 or D1101 faulty.
NG
The test lands and components of circuit no. 1000-1099 are
on the SP circuit board.
The test lands and components of circuit no. 1100-1499 are
on the PC circuit board.
The test lands and components of circuit no. 1500 and higher
are on the CSR circuit board.
NG
NG
NG
1
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
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