Daewoo DTQ-14V1FSP/20V1FSP, DTQ-14V1FC/20V1FC, DTQ-14V1FS/20V1FS No Color, No Vertical Deflection

Page 26

TROUBLESHOOTING GUIDE

5. NO COLOR

Check

 

Check

C.V.S waveform

 

 

the voltage

 

 

composite video in

#44

 

 

#43

 

 

 

 

Video/Chroma/Deflection Vcc

 

 

Check

Check

 

the crystal

 

#38

the voltage

I101

X502

 

 

#18

 

RGB Vcc (9V)

 

 

R OUT

#19

 

 

 

G OUT

#20

 

 

 

B OUT

#21

 

 

 

Check

 

 

R/G/B signal

 

 

6. NO VERTICAL DEFLECTION

 

 

Check

 

 

 

 

the voltage

 

 

 

#43

 

 

 

 

 

Video/Chroma/Deflection Vcc

Check

 

 

 

 

the voltage (25V)

5V

I101

 

Vertical IC Vcc (25V)

 

 

 

 

#6

C507

#24

X502

 

 

C508

 

 

 

V RAMP ALC filter

 

 

I301

 

 

 

 

 

 

C307

 

#23

 

LA7841

Check

 

#5

Vertical output

 

(Invert RAMP in)

the voltage

 

 

#3

 

( 2.5V )

 

 

 

 

 

(Output)

 

 

 

 

Check

 

Vertical

 

 

vertical output signal

 

 

D.Y.

Check

 

 

 

 

 

 

the waveform

 

 

 

If no output,

 

 

 

then change I301

 

 

 

25

 

Image 26
Contents Color Television Page Product Safety Servicing Guidelines for Audio Video Products Safety Checks Subject Implosion Specifications ItemsDiagram Service Mode Adjustments Alignment InstructionsAssembly Adjustments Alignment InstructionsFocus Adjustment White Balance ADJUSTMENTS8 Contrast IC Description COMI701Abstract Function Table of Option and Schedule Pin Description IC Description IC Description I101 DPM Troubleshooting Guide No PowerNo Picture MicomNo Sound MicomCH DON’T Stop MicomNo Color No Vertical DeflectionRemote Control does not Operate No ON-SCREEN DisplayElectrical Parts List LOC Part Code Part Name DescriptionElectrical Parts List DUZ9R1BM Diode Zener Metal Film 1W 3.6 OHM J Small HRFT472FCA Chip Exploded View DTQ-14V3FS DTQ-14V5FC / FS DTQ-14U1FS DTQ-20V1FS DTQ-20V3FS DTQ-20V4FS DTQ-20U1FS Mon Aug 09 094804 Mail G7F00E@web.dwe.co.kr TEL 82-2-360-8179~8180/8187 FAX
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