Diagnostic information 2-121
Sensor (narrow media) service check
Sensor (duplex input) service check
Step Check Yes No
1 Check the sensor (narrow media) for damage.
Is the above component free from damage?
Go to step 2. Replace the fuser
unit assembly.
Go to “Fuser unit
assembly
removal” on
page 4-22.
2
Does the display on the operator panel, change every time
the sensing area of the above sensor is interrupted or
blocked.
The sensor is
working properly
Go to step 2.
3
Check the above sensor for proper connection.
Is the above sensor connected properly?
Replace fuser unit
assembly.
Go to “Fuser unit
assembly
removal” on
page 4-22.
Replace the
connection.
Step Check Yes No
1 Check the sensor (duplex input) for damage.
Is the above component free from damage?
Go to step 2. Replace the
sensor (duplex
input).
Go to “Sensor
(duplex input)
2
Does the display on the operator panel, change every time
the sensing area of the above sensor is interrupted or
blocked.
The sensor is
working properly
Go to step 2.
1. Enter the diagnostic mode.
2. Select Base sensor test.
3. Observe the line item “narrow media”.
1. Enter the diagnostic mode.
2. Select Duplex sensor tests.
3. Select Sensor test.
4. Observe the line item “input”.
page 4-69.
T656)” on
removal (5350dn,
5530dn, and
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