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43 4. no color – Daewoo 14Q1 User Manual

Page 42

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43

4. NO COLOR

CHECK VIDEO SIGNAL

AT PIN13 OF I501(TDA8374A)

[REFER TO WAVEFORM

]

CHECK SYSTEM MODE

AUTO

PAL

SECAM

N3

N4

N5

CHECK SIGNAL
AT PIN29, PIN30

OF I501

CHECK / REPLACE I501

CHECK / REPLACE

X501(4.43MHz X-TAL)

X502(3.58MHz x-tal)

REFER TO

NO PICTURE CHART

CHECK SIGNAL

AT PIN31, PIN32

OF I501

CHECK SIGNAL

AT PIN19, 20, 21

OF I501

CHECK VIDEO SIGNAL

AT CATHOD OF CRT

[REFER TO

WAVEFORM

]

CHECK / REPLACE

CRT

CHECK / REPLACE

I901, I902, I903

(CRT BOARD)

CHECK / REPLACE

I501

CHECK / REPLACE

I502 & I503

OK

NORMAL

NORMAL

NORMAL

NORMAL

NORMAL

ABNORMAL

ABNORMAL

ABNORMAL

ABNORMAL

ABNORMAL

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