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EPSON Stylus Pro 7600/9600 Revision A
Troubleshooting Error Display 137
3.2.4.6 CR motor encoder check error (00010004)
Explanation:
During initial operation at power on or during CR Motor operation, there may be a
case where the encoder pulse signal is not input at specified intervals. In such a
case, this message is displayed and the printer stops operating.
Cause of trouble:
Broken wire for the CR motor encoder, inverted wiring for A and B pulses,
disconnected connector for the encoder or motor, or inverted wiring for the motor.
Points to be checked:
1. The CR Encoder and the T Fence must be free from dust and dirt or any other
foreign matters.
2. The CR Timing Belt must be free from any defects and the belt must be in
proper tension.
3. The carriage must slide smoothly, free from undue load.
4. Measure the resistance value of the CR Motor. (5.8Ω)
5. Execute encoder checking by “5.2.2.4 Encoder ”(p225) in the self-
diagnostics menu.
6. All the harness must be connected properly and free from short circuit or
broken wire.
Remedy:
• Replace the CR Encoder Sensor ASSY (p.178).
(Refer to “CR Encoder Sensor Mounting Position Adjustment” (p.268))
• Replace the CR Motor ASSY (p.180).
(Refer to “CR Timing Belt Tension Adjustment” (p.263))
• Replace the MAIN Board (C472 MAIN) (p.207).
• Check to see if the timing fence for detection of the encoder pulse is removed
• Check for dirt, paper dust or damage to the timing fence
3.2.4.7 CR motor out of step (00010005)
Explanation:
During CR Motor operation, there may be a case where the encoder pulse signal
within the specified range is not input within a specified period of time or the pulse
width is extremely long. In such a case, the CR Motor is judged to be out-of-step,
so that this message is displayed and the printer stops operating.
Cause of trouble:
• The error counter has reached the out-of-step pulse count because of
impossible movement of the carriage, bumping of the carriage or dirty timing
fence.
• Defective motor.
Points to be checked:
1. The CR Encoder and the T Fence must be free from dust and dirt or any other
foreign matters.
2. The CR Timing Belt must be free from any defects and the belt must be in
proper tension.
3. The carriage must slide smoothly, free from undue load.
4. Measure the resistance value of the CR Motor. (5.8Ω)
5. Execute encoder checking by “5.2.2.4 Encoder ”(p225) in the self-
diagnostics menu.
6. All the harness must be connected properly and free from short circuit or
broken wire.
7. Check the carriage home position sensor.
Remedy:
• Replace the CR Motor ASSY (p.180).
(Refer to “CR Timing Belt Tension Adjustment” (p.263))
• Replace the MAIN Board (C472 MAIN) (p.207).
• Replace the CR_HP Sensor ASSY (p.183).
• Replace the CR Encoder Sensor ASSY (p.178).
(Refer to “CR Encoder Sensor Mounting Position Adjustment” (p.268))
• Replace the CR Encoder Scale (Timing Fence) (p.184).
• Check to see if the timing fence for detection of the encoder pulse is not
installed correctly.
• Check for dirt, paper dust or damage to the timing fence