Epson Stylus PHOTO 950 Service Manual page 75

EPSON Stylus PHOTO 950
Table 3-11. Countermeasures when an adjust lever error occurs
Step Check Point
3 Is there a sensor Try moving the actuator manually in the same was as if it were
or actuator being pushed by the Adjust lever. When the actuator is released,
problem? check that it returns automatically to its original position.
4 Is there a release Use a multimeter to check if there is a problem with the sensor.
sensor problem? Operate the actuator manually and check that the voltage at pin
1 of connector CN13 on the main circuit board changes as
follows.
• Paper guide open
• Paper guide closed : HIGH
2-pin
(GND)
TROUBLESHOOTING
Remedy
: LOW
1-pin
(Release)
Overview
3.1.4.7 Remedy when a paper thickness error occurs
This section describes the necessary check points and the related remedies to be carried
out when a paper thickness error occurs. Paper thickness errors are basically caused by
the following.
When the PE sensor cannot detect the paper thickness
When thick paper is being fed and the platen gap is judged to be too narrow
The various causes of this error and how to remedy them are given below. You should
carry out the checks in the order specified. As a guide to understanding the table, if the
answer to the question for a check item is yes, then carry out the operation given next
to that question. If the answer is no, proceed to the next step.
Table 3-12. Countermeasures when a paper thickness error occurs
Step Check Point
1 Is the Adjust If the Adjust lever is set to the forward position, move it to the
lever set back position
correctly?
2 Is connector Connector CN11 on the main circuit board is used to send the
CN11 (yellow: feedback signals from the PE lever to the main circuit board.
3-pin) on the Therefore, if this connector is disconnected, the same operation
main circuit occurs as if there is a problem with the PE sensor itself.
board or the
sensor connector
disconnected or
loose?
3 Is there a sensor Try moving the actuator manually in the same was as if it were
or actuator being pushed by the PE sensor. When the actuator is released,
problem? check that it returns automatically to its original position.
Revision A
Remedy
75