Diagnostic information 2-117
7526
920.07—POST—Narrow media sensor error service check
920.08—Exit sensor service check
Step Questions / actions Yes No
1 1. Turn the printer off.
2. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-37.
3. Reseat the cable in connector JTRAY1.
Did 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 4-138.
Go to step 3.
3
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 4-165.
4
1. Disconnect the cable in JTRAY1, and
connect the cable from the new paper pick
mechanism.
2. Enter Diagnostics mode (press and hold
buttons 3 and 6, turn on the MFP, and
release the buttons when the progress bar
displays.
3. Touch Sensor Tests.
4. Touch Dynamic Sensors.
5. Touch Narrow Media.
6. Activate the narrow media sensor.
Did the narrow media sensor change from
Closed to Open on the touchscreen?
Replace the paper pick
mechanism. See “Paper
pick mechanism
assembly removal” on
page 4-138.
Replace the system board.
See “System board
removal” on page 4-165.
Step Questions / actions Yes No
1 Verify the paper is loaded properly in the
paper tray or manual feed slot.
Is the paper properly loaded?
Go to step 2. Load paper correctly.
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