Service manual

20
4. Abnormal OSD Font
Is menu
key selected?
Is OSD Font
exist?
* If menu key selected.
Is +5V
Voltage about 5V?
Abnormal OSD Font
Is the
output of IC803
(pin 13, 14, 15)
normal?
Trouble in
+5V voltage
line.
Refer to trouble in P.S.U
Troubie in
IC803 or its
ambient circuit
Trouble in IC803
and its ambient
circuit
One color is
missing
Refer to Missing Color
No
No
Yes
Yes
Yes
Yes
No