Cr Motor Operation Abnormal - Epson Stylus Color C70 Service Manual

EPSON Stylus COLOR C70/C80

3.1.6.11 CR Motor Operation Abnormal

This section describes the procedures for checking printers that have been returned
because the printing speed suddenly became much slower after having operated
normally up until then. This problem basically cannot be immediately reproduced
when carrying out repairs. This description concentrates on why problem occurs. To
remedy the problem, canceling the transmission of printing data or turning off the
power, wait about 15 minutes and then start printing again. Printing should then return
to normal speed. This resetting method should be taught to the customer.
Table 3-23. CR Motor Operation Abnormal
Step Check Point
1 Is no problem apparent If a problem is found, refer to the appropriate section of
surface problems and take the appropriate measures. If no
when printing is carried
problem is found, continue to the next step.
out?
2 Check the customer's When DC motors are continually used, they become hot, and if
usage environment. they become too hot it can cause the coil inside the motor to
seize. To prevent this from happening, the Stylus COLOR
C70/C80 carries out the following controls.
1. If continuous printing is carried out for 150 pages and
printing continues past this, the carriage drive speed does
not change but a 3-second waiting time is introduced after
each pass is completed. This always occurs when the
carriage moves from left to right or from right to left.
2. In addition to the above condition, the same operation is
performed if printing has been carried out continuously for
35 minutes, even if the number of continuous pages printed
does not reach 150.
NOTE:This operation causes the printing speed to remain at
3 To return the printing speed to normal from the above,
momentarily pause the transmission of printing data from the
computer, or turn the printer's power off and wait 15 minutes.
The speed will then return to normal.
4 Make sure that the customer understands the above conditions,
and show them the relevant sections of the User's Guide so
that they understand how the printer's protection operation
works.
Troubleshooting
Remedy
the slow speed without returning to normal as long as
the current print job continues. If the speed does not
automatically return to normal, it is different from the
SIDM Print Head protection operation.
Overview
Revision A
95