Daewoo 710C Service Manual page 16

4. Abnormal OSD Font
Abnormal OSD Font
Is menu
key selected?
Is OSD Font
exist?
One color is
missing
Is the
output of IC802
(pin 21, 22, 23)
normal?
Refer to Missing Color
* If menu key selected.
No
Yes
Yes
No
Yes
Is Heater
No
Voltage (CRT PWB)
about 6V?
Yes
Troubie in
IC802 or its
ambient circuit
Trouble in IC802
and its ambient
circuit
18
Trouble in
Heater voltage
line.
Refer to trouble in P.S.U