8-5
FL11.3TR
[ Video Signal Section ]
No
Is the "L" pulse sent out Pin(1) terminal of remote
control receiver (RS102) when the infrared remote
control is activated?
Check the line between Pin(1) terminal of remote
control receiver(RS102) and Pin(25) of CN301,
and service it if defective.
Yes
Is the "L" pulse supplied to Pin(25) of CN301?
Yes
Is 3.3V voltage supplied to Pin(2) terminal of the
remote control receiver (RS102)?
No
FLOW CHART NO.2
Operation is possible from the unit.
Check AL+3.3V line and service it if defective.
No
Replace the remote control receiver(RS102)
or the remote control unit.
Yes
Replace Digital Main CBA Unit.
When pressing each switches (SW101, SW103~
SW107) do the voltage of Pin(29) of CN302 increase?
Yes
The key operation is not functioning.
FLOW CHART NO.1
Are the contact point and installation state of the key
switches (SW101, SW103~SW107) normal?
Re-install the switches (SW101, SW103~SW107)
correctly or replace the poor switch.
Check the switches (SW101, SW103~SW107)
and their periphery circuit, and service it if defective.
Yes
Replace Digital Main CBA Unit.
No
No
No operation is possible from the remote control unit.
Picture does not appear normally.(Video input)
FLOW CHART NO.3
Are the video signal inputted to Pin(4) of CN302?
Yes
Yes
Check the line between Pin(4) of CN302 and
JK752, and service it if defective.
No
Is the "H" level signal inputted to the Pin(5) of CN302?
Check JK751, R763 and their periphery circuit, and
service it if defective.
No
Replace Digital Main CBA Unit or LCD Module
Assembly.
