Daewoo 14Q1 Service Manual page 44

6. NO EXTERNAL A/V(RF OK)
7. NO ON-SCREEN DISPLAY(PICTURE OK)
ABNORMAL
CHECK / REPLACE
PERI. COMP
CHECK EXTERNA AUDIO
& VIDEO SIGNAL
AT PIN2 & 17 OF I501
ABNORMAL
CHECK RCA JACK
ABNORMAL
CHECK / REPLACE I701
CHECK HORI. & VER. SYNC
OF I701 RESPECTIVELY
ABNORMAL
CHECK / REPLACE
Q301, Q302(VER. SYNC)
D401, R414(HORI. SYNC)
NORMAL
CHECK WAVEFORM
AT PIN23, 24, 25, 26
OF I501
NORMAL
CHECK / REPLACE
OK
I501
RESPECTIVELY
OK
CHECK WAVEFORM
AT PIN7 & 8 OF I501
OK
CHECK / REPLACE I501
AT PIN46 & 45
OK
AT PIN 47, 48, 49 & 50 OF I701
CHECK OSD IN/PUT WAVEFORM
45
NORMAL
OK
NORMAL
CHECK OSD R/G/B SIGNAL
& BLANKING SIGNAL
ABNORMAL
AT PIN 38, 39 OF I701
CHECK / REPLACE
I701 & PERI. COMP
OK