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FLOW CHART NO.12
DVD-P-ON+3.3V is not outputted. (DVD-P-ON+12V is outputted normally.)
Is the "H" pulse (approximately 5V) inputted into
the base of Q1011?
Replace Q1011.
FLOW CHART NO.13
DVD-P-ON+5V is not outputted. (DVD-P-ON+12V is outputted normally.)
Is the "H" pulse inputted to the base of Q1004?
Replace Q1004.
FLOW CHART NO.14
EV+1.2V is not outputted.
Is 2.8V voltage supplied to Pin(4) of IC1002?
Replace IC1002.
FLOW CHART NO.15
EV+3.3V is not outputted.
Is 4V voltage supplied to Pin(4) of IC1004?
Replace IC1004.
FLOW CHART NO.16
The fluorescent display tube does not light up.
Is 3.3V voltage supplied to Pin(6, 24) of IC571?
Is approximately -24V to -28V voltage supplied to
Pin(15) of IC571?
Is there approximately 500kHz oscillation to
Pin(26) of IC571?
Are the filament voltage applied between (1, 2)
and (29, 30) of the fluorescent display tube?
Also negative voltage applied between these pins
and GND?
Replace the fluorescent display tube.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Check R1077 and their periphery, and service it if
defective.
No
Check R1068 and their periphery, and service it if
defective.
No
Check D1020,C1014,L1020, C1015, and their
periphery, and service it if defective.
No
Check D1008, C1007, L1007, C1038 and their
periphery, and service it if defective.
No
Check the EV+3.3V line and service it if defective.
No
Check the -FL line and service it if defective.
No
Check R572, IC571 and their periphery, and
service it if defective.
No
Check the power circuit, D1016, D1017,
R1042, C1018 and their periphery, and
service it if defective.
3-3
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