CONFIDENTIAL
5 Troubleshooting
5-2
LTM1555(B)/LTM1755(B)
5-2 No Video (PC Signal)
Power indicator is green.
Does the signal appear
at IC134, IC135, IC136
of R, G, B input?
Check CN11.
Yes
Yes
No
Does the clock pulse
appear at X21?
Check X21 and related circuit of X21.
Yes
No
Does the clock pulse appear at
output of <RA35~RA39, RA310>15”
<RA35~RA39, RA310, RA313~318>17”.
Check related circuit of IC32.
Yes
No
Does the clock pulse appear at
output of <R611~R620>15”
<R611~R620, R61~R69, R610>17”.
Replace <R611~R620>15”
<R611~R620, R61~R69, R610>17”.
Yes
No
Replace LCD Panel.
Summary of Contents for LTM1555(B)
Page 8: ...Memo 2 Product Specifications 2 4 LTM1555 B LTM1755 B CONFIDENTIAL ...
Page 17: ...CONFIDENTIAL LTM1555 B LTM1755 B 6 1 6 Exploded View and Parts List 6 1 1 LTM1555 B ...
Page 19: ...LTM1555 B LTM1755 B 6 3 6 Schematic Diagrams CONFIDENTIAL 6 1 3 LTM1555 B Rear ...
Page 21: ...LTM1555 B LTM1755 B 6 5 6 Schematic Diagrams CONFIDENTIAL 6 2 1 LTM1755 B ...
Page 23: ...LTM1555 B LTM1755 B 6 7 6 Schematic Diagrams CONFIDENTIAL 6 2 3 LTM1755 B Rear ...
Page 24: ...6 Exploded View Parts List 6 8 LTM1555 B LTM1755 B CONFIDENTIAL 6 2 3 LTM1755 B Stand ...
Page 63: ...8 Block Diagram LTM1555 B LTM1755 B 8 1 CONFIDENTIAL ...
Page 64: ...CONFIDENTIAL Memo 8 Block Diagrams 8 2 LTM1555 B LTM1755 B ...
Page 65: ...CONFIDENTIAL LTM1555 B LTM1755 B 9 1 ...
Page 66: ...Memo 9 Schematic Diagrams 9 2 LTM1555 B LTM1755 B CONFIDENTIAL ...
Page 68: ...CONFIDENTIAL 10 Schematic Diagrams 10 2 LTM1555 B LTM1755 B 1 2 3 ...
Page 70: ...CONFIDENTIAL 10 Schematic Diagrams 10 4 LTM1555 B LTM1755 B 4 ...
Page 72: ...CONFIDENTIAL 10 Schematic Diagrams 10 6 LTM1555 B LTM1755 B 5 6 7 8 ...
Page 74: ...CONFIDENTIAL 10 Schematic Diagrams 10 8 LTM1555 B LTM1755 B 9 ...
Page 76: ...CONFIDENTIAL 10 Schematic Diagrams 10 10 LTM1555 B LTM1755 B 10 ...
Page 78: ...10 Schematic Diagrams 10 12 LTM1555 B LTM1755 B CONFIDENTIAL Memo ...
Page 80: ...11 Panel Description 11 2 LTM1555 B LTM1755 B CONFIDENTIAL Memo ...
