Epson 9600, 7600 service manual CR motor overcurrent, CR motor in-position time-out

EPSON Stylus Pro 7600/9600 Revision A

3.2.4.8 CR motor overcurrent (00010006)

†Explanation:

During CR Motor operation, there may be a case where an abnormal current out of the specified limits is detected in the CR Motor drive circuit on the C472MAIN Board or a current exceeding the specified value is required. In such a case, this message is displayed and the printer stops operating.

†Cause of trouble:

Hardware has detected overcurrent in the CR motor circuit.

†Points to be checked:

1.Measure the resistance value of the CR Motor. (5.8Ω)

If the CR Motor is found in short mode, replace the C472MAIN Board at the same time.

2.By visual inspection, check the T Fence for any defect, such as damage or soiling, which can cause faulty reading by the sensor.

3.By visual inspection, check the harness of the CR Motor for any problem causing a short circuit to the frame.

†Remedy:

•Replace the MAIN Board (C472 MAIN) (p.207).

•Replace the CR Motor ASSY (p.180).

(Refer to “CR Timing Belt Tension Adjustment” (p.263))

•Correct the carriage home position.

•Remove the foreign matters. Clean the timing fence.

3.2.4.9 CR motor in-position time-out (00010007)

†Explanation:

At carriage stop processing in CR Motor control, there may be a case where the carriage can not move to the final target position within a specified period of time (as per pulse detection). In such a case, this message is displayed and the printer stops operating.

†Cause of trouble:

There are pulses smaller than out-of-step pulse remaining without completing paper feed.

†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).

•Replace the CR_HP Sensor ASSY (p.183).

Troubleshooting Error Display 138