Sharp 27DV-S100 User Manual

57
27DV-S100 27DV-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

Sharp 27DV-S100 Specifications

General

Brand	Sharp
Model	27DV-S100
Category	TV DVD Combo
Language	English