Epson Stylus PHOTO 950 Service Manual page 76

EPSON Stylus PHOTO 950
Table 3-12. Countermeasures when a paper thickness error occurs
Step Check Point
4 Is there a PE 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 CN11 on the main circuit board changes as
follows.
• No thick paper : LOW
• Thick paper
2-pin
(GND)
5 Is connector Connector CN12 on the main circuit board is used to send the
CN12 (blue: 2- feedback signals from the PG sensor to the main circuit board.
pin) on the main Therefore, if this connector is disconnected, the same operation
circuit board or occurs as if there is a problem with the PG sensor itself.
the sensor
connector
disconnected or
loose?
TROUBLESHOOTING
Remedy
: HIGH
1-pin
(PE)
Table 3-12. Countermeasures when a paper thickness error occurs
Step Check Point
6 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.
7 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 CN12 on the main circuit board changes as
follows.
• Platen gap (PG) normal : LOW
• Platen gap (PG) large
Overview
Remedy
: HIGH
2-pin
(GND)
Revision A
1-pin
(PG)
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