DAEWOO CN155
Manual de Servicio

AV DOES NOT OPERATE

CHECK THE VOLTAGE TV:2.5V VIDEO:1.1V #2 SIF

VIDEO BUFFER SWITCHING Q205
D204

CHECK THE VIDEO WAVEFORM EXT VIDEO IN #42 1701 #33 TV/VIDEO TV:L VIDEO:H #1F AGC CHECK THE VOLTAGE TV:2.5V VIDEO:0.5V VIDEO BUFFER Q204

CHECK THE VOLTAGE TV:6.3V VIDEO:3.4V EXT VIDEO IN

EXT AUDIO IN #1 CHECK THE AUDIO WAVEFORM

EXT AUDIO IN

I 501 M52339SP

NO VERTICAL SCAN (ONE HORIZONTAL LINE RASTER)

CHECK THE WAVEFORM OF PIN #18 OF I501 OK

NG

CHECK/REPLACE I501

CHECK THE VOLTAGE OF PIN 8, 13 OF I301 OK

NG

DISCONNECT D410 AND MEASURE THE VOLTAGE OK

NG

CHECK/REPLACE R413

CHECK THE WAVEFORM OF PIN 12 OF I301 OK

NG

REPLACE I301

CHECK THE CONNECTION OF P401 OK

CHECK/REPLACE D.Y

32