4. Abnormal OSD Font

4. Abnormal OSD Font

Abnormal OSD Font

Is menu

key selected? Is OSD Font exist?

Yes

One color is missing

Yes

Is the

output of IC802 (pin 13, 14, 15) normal?

Yes

Refer to Missing Color

* If menu key selected.

No

 

 

 

Is Heater

No

 

Trouble in

 

 

 

Voltage (CRT PWB)

 

Heater voltage

 

 

 

 

 

 

 

 

 

 

 

about 6V?

 

 

line.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

Refer to trouble in P.S.U

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Troubie in

 

 

 

 

 

 

 

 

 

IC802 or its

 

 

 

 

 

 

 

 

 

ambient circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

Trouble in IC802

 

 

 

 

 

 

 

and its ambient

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

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Image 20
Daewoo 710B service manual Abnormal OSD Font