Trouble Shooting
Page 7
NEC-FA150ATUA
5. No OSM display
O K
N G
Check the input of pulse from I306 pin 33,34, 35, 36, 37
Proceed "Checking the resolution change IC movement" section.
Failure point
1) Printed wire broke between I306 pin 33 and I305 pin 93.
2) Printed wire broke between I306 pin 34 and I305 pin 88.
3) Printed wire broke between I306 pin 35 and I305 pin 94.
4) Printed wire broke between I306 pin 36 and I305 pin 95.
5) Printed wire broke between I306 pin 37 and I305 pin 89.