Osd Adjust Problem - Elo TouchSystems ET17 XXL Series Service Manual

5.Abnormal OSD

5.1 OSD Adjust problem

Check the input TTL level whether was changed when pressed function keys
OK
Failure Point
(1) Printed wire broke between P308 pin 3 and I303 pin 41
NG
(2) Printed wire broke between P308 pin 4 and I303 pin 42
(3) Printed wire broke between P308 pin 5 and I303 pin 43
(4) Printed wire broke between P308 pin 6 and I303 pin 46
(5) Printed wire broke between P308 pin 7 and I303 pin 47
(6) C417,C428,C429,C430,C431 Short.
(7) RN314, RN315 open/short.
(8) I303 failure.
Proceed " Checking the resolution change IC movement" section.
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