JVC JX-S555 Service Manual page 15

Symptom Check Points
H
11. The S-Video (Y) Q104: Emitter
input at CH5 is (C) Q102: Emitter
not output at the
Monitor output.
I
12. Malfunction in (Y) Q114: Emitter
Y/C separation. (C) Q113: Emitter
J
(Y) M101: Pin 5
(C) M101: Pin 3
K
13. Malfunction in (Y) Q118: Emitter
Y/C separation (C) Q117: Emitter
for monitor
output.
L
(Y) M102: Pin 5
(C) M102: Pin 3
Normal Voltage/Waveform
(Y)
2.0 Vp-p
(C)
1.28 Vp-p
(Y)
2.0 Vp-p
(C)
1.28 Vp-p
(Y)
1.0 Vp-p
(C)
0.64 Vp-p
(Y)
2.0 Vp-p
(C)
1.28 Vp-p
(Y)
1.0 Vp-p
(C)
0.64 Vp-p
Check Results and Failures
NO Check Q101 to Q104, Q119, Q120
E
and their surroundings.
YES Go to check .
J
NO Go to check .
YES Check IC101 and surroundings.
NO M101 defective.
YES Check Q112 to Q114, Q173, Q174
and their surroundings.
L
NO Go to check .
YES Check IC101 and surroundings.
NO M101 defective.
YES Check Q116, Q117, Q175, Q176
and their surroundings.
JX-S555(J)
(No. 70251) 15