Epson Stylus Pro 9000 - Print Engine, Service Manual, Page: 42 / 198

EPSON Stylus Pro 9000
Troubleshooting 42
SERVICE REQ. 00010002
Problem
PF motor overcurrent
Feedback from the PF motor driver (IC35) indicates that the PF motor’s
current is irregular.
Solution
Replace the PF motor
Replace the Main Board
SERVICE REQ. 00010003
Problem
PFin-position time-out
The in-position time is the amount of time the printer waits to make sure the
PF Roller is not moving when the motor comes to a stop. If the rotary
encoder sends a pulse during the in-position time, then the PF Roller is
moving even though it’s supposed to be at a full stop, and this generates
an error.
Solution
Replace the PF motor
Replace the Main Board
SERVICE REQ. 00010004
Problem
CR motor (linear) encoder check error
When the CR motor turns, the printer checks the linear encoder output
signals to make sure the motor is turning at the correct speed and
distance. If the encoder doesn’t send the correct output data, an error
occurs.
Solution
Make sure there is nothing blocking the carriage. If that does not solve the
problem, check the linear encoder’s connections. If there still is a problem,
try the following.
Check the plastic encoder strip (timing fence) for soiled areas,
obstructions, and damage
Replace the linear encoder sensor
Replace the CR motor
Replace the Main Board
SERVICE REQ. 00010005
Problem
CR motor out of step
The length of the CR motor’s pulse is too long or too short compared to the
normal pulse.
Solution
See the solution for Service Request 0010004, above.