Diagnostic information 2-99
5026
920.06—Input sensor service check
920.07—POST (power-on self test)—Narrow media sensor error service check
3
Measure the continuity across all of the fuses
on the system board.
Are any of the fuses blown?
Replace the system board.
See “System board
removal” on page 4-155.
Go to step 4.
4
1. Perform the printhead verification to check
whether the new printhead solves the
problem. See “Printhead verification”
on page 3-39.
2. Navigate to PRINTHEAD TESTS > Mirror
Motor Test.
Did the mirror motor pass the test?
Replace the printhead. See
“Printhead removal,
installation, and
adjustment” on
page 4-145.
Replace the system board.
See “System board
removal” on page 4-155.
Step Questions / actions Yes No
1 Is the input sensor flag damaged? Replace the paper pick
mechanism. See “Paper
pick mechanism
assembly removal” on
page 4-137.
Go to step 2.
2
1. Turn the printer off.
2. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-47.
3. Check the cable in connector JTRAY1 for
proper connection to the system board, for
pinch points, and any other damage to the
cable or connector.
Is the cable damaged?
Replace the paper pick
mechanism. See “Paper
pick mechanism
assembly removal” on
page 4-137.
Go to step 3.
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 4-137.
Replace the system board.
See “System board
removal” on page 4-155.
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 4-137.
Go to step 3.
Step Questions / actions Yes No
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