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