Daewoo DTU-14XX ME Service Manual page 47

TROUBLE SHOOTING CHARTS
2. NO PICTURE(RASTER OK)
CHECK SIGNAL AT PIN
1 OF Z701
ABNORMAL
CHANGE INPUT MODE
RF --> AV --> RF
CHANGE SIGNAL
IF OF TUNER
ABNORMAL
CHECK SIGNAL AT PIN
72,76,77 OF I701
ABNORMAL
CHECK/REPLACE
SCL,SDA, B+ OF I701
CHECK/REPLACE
SCL, SDA OF I701
CHECK/REPLACE
SCL, SDA, SIGNAL &
TUNER
NORMAL
NORMAL
NORMAL
NORMAL
-46-
CHECK SIGNAL AT PIN
83, 84, 85 OF I701
CHECK VOLTAGE AT PIN
22,43,45,63,80 OF I701
NORMAL
CHECK/REPLACE
Q502,Q503,Q504,Q505
CHECK SIGNAL AT
CATHODE OF CRT
ABNORMAL
CHECK/REPLACE
CRT BOARD