Sensor or switch
name
Sensor
number
Replacement part
number
Description Paper-path sensor
test name
Testing of sensor
Paper feeder media-
feed sensor - Tray 3
1
PS8008 (Replace feeder
unit)
Photointerrupter E Tray 3 feed sensor Remove the Tray 2
cassette, use a small
screwdriver to
activate the sensor
through the small
slot toward the front
of the product.
Paper feeder media-
feed sensor - Tray 4
1
PS8008 (Replace feeder
unit)
Photointerrupter F Tray 4 feed sensor Remove the Tray 3
cassette, use a small
screwdriver to
activate the sensor
through the small
slot toward the front
of the product.
Face-down media
tray media-full sensor
PS4 Photo interruptor:
WG8-5696-000CN
Top-cover flag:
RM1-6289-000CN
Photointerrupter G FD tray full sensor Lift the face-down
tray output levers to
activate the sensor.
Rear cover open
sensor
PS1 WG8-5696-000CN Photointerrupter H Face-up detect
sensor
Open the rear door
to about 15 degrees.
Cartridge-door
switch
SW501 WC4-5171-000CN Switch I Cartridge-door
open switch
Open the cartridge
door.
Face-up detect
sensor
PS8001 WG8-5696-000CN Photointerrupter J Rear cover open
sensor
Open the rear door
to about 90 degrees.
MP tray media-
presence sensor
PS205 RM1-6510-000CN Photointerrupter K Tray 1 paper
sensor
Push the sensor
lever to the right of
the center of the tray,
and hold it there for 3
seconds.
Cassette media-
presence sensor
PS3 Currently not
replaceable
Photointerrupter L Tray 2 paper
sensor
Remove the Tray 2
cassette, and then
push the sensor
lever.
Tray 2 cassette
presence switch
SW235 RM1-6487-000CN
(tray sensor PCA)
Switch M Tray 2 detect
sensor
Remove the Tray 2
cassette, and then
reinstall it.
1
Tray 3 and Tray 4 use a PS8008 sensor.
Table 3-4 MANUAL SENSOR TEST 2 (special mode test)
Sensor or switch
name
Sensor
number
Replacement part
number
Description Paper-path sensor
test name
Testing of sensor
Paper feeder Tray 3
cassette media-
presence sensor
1
PS451 CE530-69001 Photointerrupter N Tray 3 paper
sensor
Remove the Tray 3
cassette, and then
push the sensor
lever.
Paper feeder Tray 3
cassette presence
sensor
1
PS461 CE530-69001 Photointerrupter O Tray 3 detect
sensor
Remove the Tray 3
cassette, and then
reinstall it.
Table 3-3 MANUAL SENSOR TEST (special mode test) (continued)
138 Chapter 3 Solve problems ENWW
