Epson Stylus Pro 9500 Service Manual page 73

EPSON Stylus Pro 9500
SERVICE REQ. 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 Main Board
SERVICE REQ. 00010003
o
Problem
PF in-position time-out - The in-position time is the amount of time the
printer waits to make sure the carriage is not moving when the carriage
comes to a stop. The rotary encoder is activate for the predetermined "in-
position time" and if the encoder sends a pulse, this means the carriage is
moving even though it is supposed to be at a full stop, this generates an
error.
o
Solution
n
Replace the PF motor
n
Replace the Main Board
Troubleshooting
SERVICE REQ. 00010004
o
Problem
CR motor encoder check error
The CR motor makes small revolutions clockwise and counter-clockwise.
When it turns, the printer checks the encoder output signals to make sure
the motor is turning at the correct speed/distance. If the encoder doesn't
send the correct signal or output data, an error occurs.
o
Solution
Make sure there is nothing blocking the carriage. If that does not solve the
problem, check the CR motor encoder connection. If there still is a
problem, try the following.
n
Check the plastic step ruler for soiled areas, obstructions, and damage
n
Replace the encoder sensor
n
Replace the CR motor
n
Replace the Main Board
SERVICE REQ. 00010005
o
Problem
CR motor out of step - the length of the CR motor's pulse is too long or too
short compared to the regular pulse.
o
Solution
Make sure there is nothing blocking the carriage. If that does not solve the
problem, check the CR motor encoder connection. If there still is a
problem, try the following.
n
Check the plastic step ruler for soiled areas, obstructions, and damage
n
Encoder sensor mounting position deviation (See Chapter 5.)
n
Replace the encoder sensor
n
Replace the CR motor
n
Replace the Main Board
Outline
Revision A
73