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5 Troubleshooting
LTM1555(B)/LTM1755(B) 5-3
Does signal appear at
<RA35~RA39, RA310>15”
<RA35~RA39, RA310, RA313~RA318>17”
of related IC32.
Check IC32 and related circuit .
Yes
No
Check IC61, 62 and
<R611, 612, ~R620>15”
<R611, 612, ~R620, R61~R69, R610>17”.
5-3 No Picture (TV, Video, S-Video)
Check Pin 55, 56 (S-Video)
and Pin 52 (VCR) and Pin 74
and Pin 53 (RF-CVBS)
of IC401 (VSP9407).
Check CN41 (Tuner) and
CN26 (VCR connector).
Yes
No
Does the signal appear at
RA33, RA34, RA311, RA312?
Check IC401 (VSP9407)
and related circuit.
Yes
No