2-102 Service Manual
5026
920.07—POST (power-on self test)—Narrow media sensor error service check
3
1. Disconnect the cable in connector
JTRAY1.
2. Connect the cable from the new paper
pick assembly in connector JTRAY1.
3. Bring the printer up in Diagnostics Menu
(turn off the printer, press and hold
buttons 3 and 6, then turn on the printer).
4. Navigate to SENSOR TESTS > Dynamic
Sensors > Input.
5. Activate the input sensor.
Did the input sensor change from Open to
Closed?
Replace the paper pick
mechanism. See “Paper
pick mechanism
assembly removal” on
page 4-145.
Replace the system board.
See “System board
removal” on page 4-163.
Step Questions / actions Yes No
1 Turn the printer off, and then remove the rear
frame cover. See “Rear frame cover
removal” on page 4-47.
Reseat the cable in connector JTRAY1.
Does the error clear?
Problem resolved. Go to step 2.
2
Check the cable in connector JTRAY1 for
pinch points and the cable or connector for
any other damage.
Is the cable damaged?
Replace the paper pick
mechanism. See “Paper
pick mechanism
assembly removal” on
page 4-145.
Go to step 3.
3
POR the printer. Place a voltmeter between
JTRAY1(pin 4), and ground (pin 1).
Does the meter read 5 V dc?
Go to step 4. Replace the system board.
See “System board
removal” on page 4-163.
4
1. Disconnect the cable in JTRAY1.
2. Connect the cable from the new paper
pick mechanism.
3. Bring the printer up in Diagnostic menu
(turn off the printer, press and hold
buttons 3 and 6, then turn on the printer).
4. Navigate to SENSOR TESTS > Dynamic
Sensors > Narrow Media.
5. Activate the narrow media sensor.
Did the narrow media sensor change from
Closed to Open?
Replace the paper pick
mechanism. See “Paper
pick mechanism
assembly removal” on
page 4-145.
Replace the system board.
See “System board
removal” on page 4-163.
Step Questions / actions Yes No
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