8-5
A0CN0TR
No
Is the "L" pulse sent out Pin(1) of RS101 (remote control
receiver) when the infrared remote control is activated?
Check the line between Pin(1) of RS101 (remote
control receiver) and Pin(13) of CN403, and service
it if defective.
Yes
Is the "L" pulse supplied to Pin(13) of CN403?
Yes
Is 3.3V voltage supplied to Pin(2) of RS101 (remote
control receiver)?
No
No operation is possible from the remote control unit.
FLOW CHART NO.16
Operation is possible from the unit.
Check AL+3.3V line and service it if defective.
No
Replace the RS101 (remote control receiver) or
remote control unit.
Yes
Replace Digital Main CBA Unit.
Picture does not appear normally. (Video input/S-Video input/Y/Pb/Pr input/RGB input)
Are the video signals outputted to the specific
terminal?
Check the luminance signal line, and service it if
defective.
Check the chrominance signal line, and service it if
defective.
Check the RGB video signal line, and service it if
defective.
Check the composite video signal line, and service it
if defective.
Check the component video(Y/Pb/Pr) signal line,
and service it if defective.
Check the line between each pin of CN401 and
CN404 and input terminal and service it if defective.
No
No
No
No
No
Yes
Are the luminance signals outputted to Pin(27) of
CN401?
Are the chrominance signals outputted to Pin(29)
of CN401?
Are the component video(Y/Pb/Pr) signals outputted
to Pin(4, 6, 8) of CN404?
Are the RGB video signals outputted to Pin(26, 28, 29)
of CN404?
Are the composite video signals outputted to
Pin(2,22) of CN404?
Replace Digital Main CBA Unit or LCD Module
Assembly.
FLOW CHART NO.17
Summary of Contents for LT850-M22 - SERVICE
Page 13: ...4 2 A0C72_73DC 2 Rear Cabinet 1 Stand Assembly S 3 S 2 S 2 S 2 S 2 S 2 S 4 S 5 S 1 Fig D1...
Page 36: ...10 4 A0C70SCM2 Main 2 Schematic Diagram...
Page 37: ...10 5 A0C70SCM3 Main 3 Schematic Diagram...
Page 38: ...10 6 A0C70SCM4 Main 4 Schematic Diagram...
Page 39: ...10 7 A0C70SCF Function Junction Schematic Diagram...
Page 40: ...10 8 Jack Schematic Diagram A0C70SCJ...
Page 75: ...LT850 M22 LT851 M22 A0C70EP A0C71EP 2010 06 03...
