Toshiba RD-XV47KE Service Manual page 25

FLOW CHART NO.6
AL+44V is not outputted.
Is 44V voltage supplied to the emitter of Q1511?
Is the "L" pulse (approximately 0V) inputted to
the base of Q1511?
Replace Q1511.
FLOW CHART NO.7
HDD+12V is not outputted.
Is 14V voltage supplied to the collector of Q1100?
Is the "H" pulse inputted to the base of Q1100?
Replace Q1100.
Is the "L" pulse outputted to the collector of Q1104?
Is 37V voltage outputted to the collector of Q1101?
Check IC1102, Q1100 and their periphery, and
service it if defective.
FLOW CHART NO.8
P-ON+10.5V is not outputted. (HDD+12V is outputted normally)
Check D1135, D1136 and their periphery, and
service it if defective.
FLOW CHART NO.9
P-ON+9V is not outputted. (P-ON+10.5V is outputted normally)
Is the "H" pulse (approximately 10V) inputted to
the base of Q1105?
Replace Q1105.
FLOW CHART NO.10
P-ON+5V is not outputted. (P-ON+9V is outputted normally)
Is 5V voltage supplied to the collector of Q1106?
Is the "H" pulse inputted to the base of Q1106?
Replace Q1106.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No Check D013, D1104, C013, and their periphery,
and service it if defective.
No
Is the "H" pulse (approximately 5V) inputted to
the base of Q1512?
Yes
Replace
Q1512.
Replace IC501.
No Check D017, D1031, D1035, C1037 and their
periphery, and service it if defective.
No
Is the "H" pulse inputted to the base of Q1104?
Yes
No
Replace Q1104.
No
Replace Q1101.
No
Check D1120, R1138, R1159, and their periphery,
and service it if defective.
No Check D016, D1032, D1102, C1104, C1105, and
their periphery, and service it if defective.
No
Check R1140 and their periphery,
and service it if defective.
1-11-2
No
Is 5V voltage supplied to the
Pin(37,99) of IC501.
Yes No
Check AL+5V line,
and service it if
defective.
No
Is 3.3V voltage supplied to
Pin(16) of IC1501?
Is 5V voltage supplied to
Pin(62, 90, 99) of IC1501?
Yes No
Check AL+3.3V,
Replace IC1501.
TIMER+5V line,
Q1527, Q1528,
D1533, D1565
and service it if
defective.
E3B90TR