Daewoo DTQ-29S2FCC Service Manual page 35

TROUBLESHOOTING GUIDE
5. NO COLOR
Check
C.V.S waveform
composite video in
the voltage
RGB Vcc (8.2V)
Check
R/G/B signal
6. NO VERTICAL DEFLECTION
C507
C508
Check
the voltage
( 2.5V )
#44
Check
#18
#19
R OUT
#20
G OUT
#21
B OUT
#43
5V
I101
#24
V RAMP ALC filter
#23
Vertical output
Check
vertical output signal
#43
#38
I101
Check
the voltage
Video/Chroma/Deflection Vcc
Vertical IC Vcc (27V)
X502
C307
Vertical
D.Y.
12
Check
the voltage
Video/Chroma/Deflection Vcc
Check
the crystal
X502
Check
the voltage (27V)
#6
I301
LA7845
#5
(Invert RAMP in)
#3
(Output)
Check
the waveform
If no output,
then change I301
Appendix