8-7
A91F3TR
P-ON+3V is not output.
FLOW CHART NO.11
Is approxi3V voltage supplied to the
cathode of D647?
Yes
No
Check if there is any leak or short-circuit on
the loaded circuit, and service it if defective.
Check C645, D647 and their periphery circuit, and
service it if defective.
P-ON+3.3V is not output.
FLOW CHART NO.12
Is approxi5V voltage supplied to the
cathode of D633?
Is the "H" signal (approxi3.5V) inputted to the
base of Q637?
No
Yes
Yes
Check C633, D633 and their periphery circuit, and
service it if defective.
Check Q638, Q639, P-ON-H2 line and their periphery
circuit, and service it if defective.
No
Replace Q637.
P-ON+9V is not output. (LCD+12V is outputted normally.)
FLOW CHART NO.13
Is approxi13V voltage supplied to the
collector of Q642?
Is approxi10V voltage supplied to the
base of Q642?
Is approxi5V voltage supplied to Pin(3) of
IC631?
No
Yes
Yes
Yes
Check D670 and their periphery circuit, and service
it if defective.
No
Check Q635, D659 and their periphery circuit, and
service it if defective.
See FLOW CHART No.5
See FLOW CHART No.10
No
No
AL+3.3V is not output.
FLOW CHART NO.14
Is approxi34V voltage supplied to the
collector of Q635?
Yes
Replace IC631.
Replace Q642.
Summary of Contents for 32MF339B/F7
Page 63: ...10 8 A91FSSCM2 Power Supply 2 4 Schematic Diagram LC321SSX 32MF369B F7 ...
Page 64: ...10 9 A91FSSCM3 Power Supply 3 4 Jack Schematic Diagram LC321SSX 32MF369B F7 ...
Page 65: ...10 10 A91FSSCM4 Power Supply 4 4 Schematic Diagram LC321SSX 32MF369B F7 ...
Page 68: ...10 13 A91F3SCF Function Schematic Diagram LC320SLX 32MF339B F7 LC320SSX LC320EMX LC320EMXF ...
Page 69: ...10 14 A91FSSCF Function Schematic Diagram LC321SSX 32MF369B F7 ...
Page 71: ...10 16 A91FSSCIR IR Sensor Junction Schematic Diagram LC321SSX 32MF369B F7 ...
