Epson Stylus Pro 4450 - Page 181

EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Troubleshooting Troubleshooting Based on Panel Messages 181
SERVICE REQ. 00010007
 Error meaning:
CR Motor in-position time-out
 Explanation
At Carriage Unit stop processing in CR Motor control, there may be a case
where the Carriage Unit 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. CR Scale is not removed from CR Encoder Sensor.
2. The CR Encoder Sensor and the CR Scale must be free from dust and
dirt or any other foreign matters.
3. Execute encoder checking by the "1.4.6.1 Self Testing Menu (SELF
TESTING)" (p.91) in "Maintenance Mode 2".
4. The CR Timing Belt must be free from any defects and the belt must
be in proper tension.
5. The Carriage Unit must slide smoothly, free from undue load.
6. Measure the resistance value of the CR Motor. (19.3 ± 10% [Ω])
7. All the harness must be connected properly and free from short circuit
or broken wire.
 Remedy
1. Check to see if the CR Scale for detection of the encoder pulse is
removed.
2. Check for dirt, paper dust or damage to the CR Scale.
3. Perform the CR Timing Belt Tension Adjustment (p.376)
4. Replace the CR Encoder Sensor (p.280)
5. Replace the CR_HP Sensor (p.276)
6. Replace the Motor Assy., CR (p.270)
7. Replace the C593 MAIN Board (p.226)
SERVICE REQ. 00010008
 Error meaning:
Servo interrupt watchdog time-out
 Explanation
During the CR Motor or PF Motor operation, there may be a case where
watch dog time-out is detected in the DC motor control circuit or on the
ASIC. In such a case, this message is displayed and the printer stops
operating.
 Remedy
Since the cause is deemed to be a defective CPU or ASIC, replace the
C593 MAIN Board (p.226).
SERVICE REQ. 00010009
 Error meaning:
System interrupt watchdog time-out
 Explanation
In the data processing stage on the BOARD ASSY., MAIN, there may be a
case where runaway or defective cash occurs on CPU or ASIC. In such a
case, this message is displayed and the printer stops operating.
 Remedy
If not cleared by turning the power OFF and back ON, the CPU or ASIC is
deemed defective, so replace the C593 MAIN Board (p.226).