Daewoo DUA-3291GB Service Manual page 13

Trouble Shooting Charts
(2)Digital Mode
Check Signal
#54~#55 of I501
Sheck Signal
#16~#18 of I501
Check #6~9 of I901
Check/Replace
Q902~Q904
And Heater Line
Check/Replace
CRT Board
Check
#119~#120 of I100
Check/Replace
SCL,SDA,X-TAL
And B+ Line of I501
Check/Replace
Q502~Q504
And 5V Line
13
Normal
Abnormal
Check/Replace
SCL,SDA
And 5V Line of Tuner
Check/Replace
SCL,SDA B+ Line,
And XI, Reset of I300
Check/Replace
B+ Line X-TAL, Reset
And RAMCLK of I100
Check/Replace
B+ Line,RAMCLK
of I101,I102
Check/Replace
B+ Line, Reset of I103
Check/Replace
Digital Board