Epson Stylus Color C70, Service Manual

Page: 70 / 216

EPSON Stylus COLOR C70/C80 Revision A
Troubleshooting Overview 70
18 The spring that
applies tension to the
paper return lever
inside the ASF has
come off from its
normal position, and
so no tension is being
applied. The photograph below shows the normal setting position for
the paper return lever tension spring.
19 The shaft that drives
the ASF hopper is
secured in a total of
four places. Has it
come loose in one of
these places, so that
the incorrect timing or
incorrect operation is
occurring?
20 Malfunction of PE
sensor Because the only sensor check point is pin 178 of the ASIC
(IC7) port and the tester must be applied directly to the pin,
testing is dangerous and difficult. This printer has the PE
sensor directly installed, so it is recommended that checking
the PE sensor should be carried out by replacing the circuit
board and checking the operation. At this time, the head ID
only should first be input to the EEPROM on the main board
so that a head hot error does not occur. No other adjustments
are required when carrying out checking.
Table 3-6. Communication Error Checking Point
Step Check Point Remedy
Paper Return Lever
Tension Spring
Check Point 1 Check Point 2
Check Point 3
21 If the customer uses
paper which is longer
than the set paper
length, no paper out
indication will appear
even though the
printer sends the
regular number of
pulses, so is this
causing a paper jam
error to be
recognized? If the problem cannot be identified even after carrying out
steps 1 to 19 above, the customer may have installed the
printer driver incorrectly, so check the method of use and the
printer driver settings directly with the customer.
Table 3-6. Communication Error Checking Point
Step Check Point Remedy