GRAPHTEC FC2250 - Initialization Is Abnormal

FC2250-UM-251-9370 9-8
9. TROUBLESHOOTING
9.1.3 Initialization is Abnormal
Does the
pen block move
normally in the -X and
+Y directions?
Turn on the plotter
No
Yes
Does it stop
when moving in the
+Y direction?
Faulty Y home sensor
Does it stop
when moving in the
-X direction?
Yes
Faulty X home sensor
Replace main board
No
No
Yes
Does the
“READY” message
appear and do all control
panel keys operate
properly?
Faulty keyboard
Faulty cable
Faulty main board
Yes
No
Normal
Is there any
movement in the X or Y
direction?
Faulty X motor or Y motor
Yes
No
Is movement
erratic in the X or Y
direction?
Faulty Y encoder or X
encoder
Yes
No
Power
board check
Is the voltage level at all
pins correct?
Faulty power board
Yes
No