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57
27D
V
-S100
27D
V
-CS10
No video
No color
NO
NO
NO
YES
YES
NO
YES
AV SW (IC1301), video signal (1Vp-p)
input to pin(63) (Tuner), pin(8) (LINE1),
pin(15) (LINE2) ?
Y/C separation (IC1401),
chroma signal output from
pin(13) ?
YES
Video chroma (IC4401),
chroma signal input to
pin(13)?
YES
YES
Video chroma (IC4401),
pin(5), (6) output from B-Y,
R-Y signal and pin(52),
(51) input to B-Y, R-Y
signal?
YES
Video chroma (IC4401),
pin(10)=3.58MHz signal?
Y/C separation (IC1401),
3.58MHz signal input to
pin(10)?
NO
NO
Check between IC1401
and IC4401
NO
NO
Check X-tal (X4801)
Replace IC4401
Check between IC1401
and IC4401
Check color control of
picture adjustment
Video chroma (IC4401)
3.58MHz signal output to
pin(1)?
Check each line
Tuner TU1951 pin(19) output
LINE1 J1301
LINE2 J3801
AV SW (IC1301), video signal (2Vp-p)
output from pin(53) ?
YES
Y/C separation (IC1401), video signal
(0.75Vp-p) input to pin(4) ?
Check IIC-Bus and +9V line pin(33),
(34) (IIC-Bus), pin(42) (+9V)
NO
Check video signal line between
IC1301 and IC1401
YES
YES
Y/C separation (IC1401), Y-Signal
(1.30Vp-p) output from pin(15) ?
YES
Video chroma (IC4401), Y-signal output
from pin(4) and input to pin(53)?
YES
Video chroma (IC4401), R,G,B-signal
output from pin(43), (42), (41) ?
NO
Y/C separation (IC1401), fsc
(3.58MHz) input to pin(10) ?
Check between Terminal PWB and
CRT PWB
YES
Video chroma (IC4401), Y-signal input
to pin(15) ?
NO
NO
NO
Check between IC1301 and IC4401
YES
RGB amp (IC8850), RGB-signal input
to pin(1), (2), (3) ?
NO
Replace IC8850
YES
RGB amp (IC8850), RGB-signal output
from pin(9), (8), (7) ?
YES
Check the CRT screen control
NO
NO
Check Video chroma circuit
Replace IC1401
Replace IC1401
FLOW CHART No.1-3
FLOW CHART No.1-4
Summary of Contents for 27DV-CS10
Page 72: ...73 27DV S100 27DV CS10 72 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT ...
Page 103: ...111 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit ...
Page 106: ...116 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM TERMINAL SUB Unit ...
Page 107: ...117 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM FRONT AV Unit ...
Page 122: ...144 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H MAIN Unit Wiring Side ...
Page 123: ...145 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H MAIN Unit Chip Parts Side ...
Page 124: ...146 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H TERMINAL Unit Wiring Side ...
Page 125: ...147 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H TERMINAL Unit Chip Parts Side ...
Page 126: ...148 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H TV POWER Unit Wiring Side ...
Page 127: ...149 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H DEFLECTION Unit Wiring Side ...
Page 128: ...150 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H DVD VCR POWER Unit Wiring Side ...
Page 130: ...152 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H DVD MAIN Unit A Side ...
Page 131: ...153 27DV S100 27DV CS10 6 5 4 3 2 1 A B C D E F G H DVD MAIN Unit B Side ...