Philips 32PFL4664/F7 - Page 39

8-3 PL19.00ATR
[Video Signal Section]
No
Is the "L" pulse supplied to Pin(4) of CN3501 when the
infrared remote control activated?
Ye s
Is approximately +3.3V voltage supplied to Pin(2) of
CN3501?
No
FLOW CHART NO.2
Check AL+3.3V line and repair it if defective.
Ye s
Replace the Digital Main CBA Unit.
When pressing power/source button, does the cathode
voltage of D3501 decrease?
The key operation is not functioning.
FLOW CHART NO.1
Ye s
Replace the Digital Main CBA Unit.
Replace the Function Key(SW3002).
Replace the IR Sensor CBA Unit or replace the
remote control unit.
No
No operation is possible from the remote control unit. (Operation is possible from the unit.)
Picture does not appear normally.
FLOW CHART NO.3
Ye s
No
Is approximately LCD+12V voltage supplied to cathode
of D3906?
See FLOW CHART NO.5 <P-ON+13V is not output.
[Power Supply Section]>
Digital Main CBA Unit or LCD Panel Assembly may
be defective. Check and replace these parts.