Epson Stylus Pro 4450 - Page 183

EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Troubleshooting Troubleshooting Based on Panel Messages 183
SERVICE REQ. 0001000F
 Error meaning:
CR Motor PWM output faulty
 Explanation
There may be a case where a current exceeding the specified value flows
during CR Motor operation. In such a case, this message is displayed and
the printer stops operating.
This error can be displayed in the following case: an abnormal load which
does not reach the level causing an out-of-step phenomenon "00010005"
in the carriage drive system has occurred and the running speed of the
motor has been detected to be too low (by the encoder), so that the current
is increased to raise the running speed of the motor.
Thus, this message appears to prevent the CR Motor from being
overheated.
 Remedy / Points to be checked
1. Check the load on the CR Motor.
• Running load of CR Motor (check by manual operation)
• Measure the resistance value of the CR Motor. (19.3 ± 10% [Ω])
If the CR Motor is found in short mode, replace the BOARD ASSY.,
MAIN at the same time.
• Damage to or wear in the CR Driven Pulley
• Damaged or worn bearing of the Carriage Unit
• Flaws in the CR Rail caused by roller running
• Tension of the CR timing belt
2. Replace the Motor Assy., CR (p.270)
If the CR Motor is found in short mode, replace the C593 MAIN Board
at the same time.
3. Replace the C593 MAIN Board (p.226)
SERVICE REQ. 00010010
 Error meaning:
PF Motor PWM output faulty
 Explanation
There may be a case where a current exceeding the specified value flows
during PF Motor operation. In such a case, this message is displayed and
the printer stops operating.
This error can be displayed in the following case: an abnormal load which
does not reach the level causing an out-of-step phenomenon "00010001"
in the paper feed drive system has occurred and the running speed of the
motor has been detected to be too low (by the encoder), so that the current
is increased to raise the running speed of the motor.
Thus, this message appears to prevent the PF Motor from being
overheated.
 Remedy / Points to be checked
1. Check the load on the PF Motor.
• Measure the resistance value of the PF Motor. (17.9 ± 15% [Ω])
If the PF Motor is found in short mode, replace the BOARD ASSY.,
MAIN Board at the same time.
• Running load of PF Motor (check by manual operation)
• Rotation load of PF Roller
2. Replace the Motor Assy., PF (p.349)
3. Replace the C593 MAIN Board (p.226)