Epson Stylus Pro 7700 Service Manual page 135

Epson Stylus Pro 7700/7710/7700M/7710M/7900/7910/9700/9710/9900/9910/WT7900/WT7910/9890/9908/7890/7908
Error Details
Error Code
Failed Part Error Name
Velocity deviation
122E PF
error
122F PF Lock error
151A APG Overload error
APG Over speed error
151B
151C APG Reversing error
Driving time-out
APG
151D
error
TROUBLE SHOOTING
Description
Detects that it is being driven at an irregularly faster speed than the
specified value.
Irregular load
Encoder failure
Motor driver failure
Motor failure
Detects that it is being driven at an irregularly slower speed than the
specified value.
Encoder cable is damaged.
Motor cable is damaged.
Irregular load
Encoder failure
Motor failure
The electric current flowing when driving the motor is irregularly large.
Encoder cable is damaged.
Motor cable is damaged.
Irregular load
Encoder failure
Motor failure
Detects that it is being driven at an irregularly faster speed than the
specified value just before stopping.
Irregular load
Encoder failure
Detects that it is being driven in the opposite direction to the specified
driving direction.
The polarity of encoder cable is opposite.
The polarity of motor cable is opposite.
Encoder failure
Irregular load
Detects that the driving period is irregularly long.
Irregular load
Firmware becomes out of control.
Remedies for Service Call Error
Remedy
Replace the PF Encoder Sensor. (See P.263)
Replace the Main Board Assy. (See P.228)
Replace the PF Motor. (See P.264)
Check if there is some foreign material causing extra load between the
PF Motor and the PF roller.
Check the connection between the PF Encoder Sensor and the Main
Board Assy.
Check the connection between the PF Motor and the Main Board Assy.
Replace the PF Encoder Sensor. (See P.263)
Replace the PF Motor. (See P.264)
Check if there is some foreign material causing extra load between the
APG Motor and the carriage unit.
Check the connection between the APG Motor Sensor and the Main
Board Assy.
Replace the APG Motor. (See P.243)
Replace the APG Motor. (See P.243)
Check the connection between the APG Motor Sensor and the Main
Board Assy.
Replace the APG Motor. (See P.243)
Replace the Main Board Assy. (See P.228)
Revision I
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