Epson Stylus Pro 7500, Service Manual

Page: 88 / 274

EPSON Stylus Pro 7500 Revision A
Troubleshooting Errors That Require a Service Technician 88
SERVICE CALL 00010001
o
Problem
PF Motor out of Synch
Abnormal PF motor internal encoder output pulse width detected (Long or short
with respect to the specified time).
o
Solution
Check if there is an abnormal load, etc. on the rotation of the grid rollers. They
there is no abnormality and the error is still not cleared, check the PF motor
encoder. If it is abnormal:
n
Check and adjust the PF timing belt tension
n
Replace the PF motor
n
Replace the PF motor extension cable
n
Replace the C299MAIN Board
SERVICE CALL 00010002
o
Problem
PF motor overcurrent
Feedback from the PF motor (IC35) driver’s 10-pin output (sensor signal)
indicates that the PF motor’s current is irregular.
o
Solution
n
Replace the PF motor
n
Replace the PF motor extension cable
n
Replace the C299 MAIN Board
SERVICE CALL 00010003
o
Problem
PF motor in position time out
In the PF motor control, position control did not finish within the regular position
stabilization time (in position time) during stop processing.
o
Solution
n
Replace the PF motor
n
Replace the PF motor extension cable
n
Replace the C299 MAIN Board