Toshiba RD-XV47KE Service Manual page 26

FLOW CHART NO.11
HDD+5V is not outputted.
Is 5V voltage supplied to the emitter of Q1102?
Is the "L" pulse outputted to the collector of Q1104?
Replace Q1102.
FLOW CHART NO.12
P-ON+2.5V is not outputted.
Is 5V voltage supplied to Pin(1) of IC1103?
Replace IC1103.
FLOW CHART NO.13
P-ON+3.3V is not outputted.
Is 5V voltage supplied to Pin(1) of IC1104?
Replace IC1104.
FLOW CHART NO.14
The fluorescent display tube does not light up.
Is 5V voltage supplied to Pin(6, 24) of IC612?
Is approximately -24V to -28V voltage supplied to
Pin(15) of IC612?
Is there approximately 500kHz oscillation to
Pin(26) of IC612?
Are the filament voltage applied between Pin(1)
and Pin(24) of the fluorescent display tube?
Also negative voltage applied between these pins
and GND?
Replace the fluorescent display tube (FL601).
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Check D016, D1032, D1102, C1104, C1105 and
their periphery, and service it if defective.
No
Check Q1104, D1117 and their periphery, and
service it if defective.
No
Check D1101, C1107, and their periphery, and
service it if defective.
No
Check D1101, C1107, and their periphery, and
service it if defective.
No
Check the TIMER+5V line and service it if defective.
No
Check the -FL line and service it if defective.
No
Check R621, IC612 and their periphery, and
service it if defective.
No Check the power circuit, D1103, D1108, R1106,
C1110, C1143 and their periphery, and service it if
defective.
1-11-3 E3B90TR