3-3
Yes
Yes
Yes
Yes
No
No
No
No
FLOW CHART NO.11
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 (34, 35) of the fluorescent display tube?
Also negative voltage applied between these pins
and GND?
Replace the fluorescent display tube.
Check the EV+3.3V line and service it if detective.
Check the -FL (-28V) line and service it if
detective.
Check R572, IC571 and their periphery, and
service it if detective.
Check the power circuit, D1016, D1017,
R1042, C1018 and their periphery, and
service it if detective.
Summary of Contents for DV-PF33U
Page 57: ...5 13 Fig DM16 41 42 43 L 13 44 45 Slide Fig DM17 ...
Page 70: ...5 3 1 Main 1 8 Schematic Diagram 3 SCHEMATIC DIAGRAMS ...
Page 72: ...7 3 3 Main 3 8 Schematic Diagram ...
Page 73: ...8 3 4 Main 4 8 Schematic Diagram ...
Page 74: ...9 3 5 Main 5 8 Schematic Diagram ...
Page 75: ...10 3 6 Main 6 8 Schematic Diagram ...
Page 76: ...11 3 7 Main 7 8 DVD OPEN CLOSE Schematic Diagrams ...
Page 77: ...12 3 8 Main 8 8 Schematic Diagram ...
Page 80: ...15 3 11 DVD Main 1 3 Schematic Diagram ...
Page 81: ...16 3 12 DVD Main 2 3 Schematic Diagram ...
Page 83: ...18 3 13 DVD Main 3 3 Schematic Diagram ...
Page 86: ...21 5 2 Main CBA Bottom View ...