Lexmark T650n - Sensor (Duplex Input) Service Check (External Duplex Only); Sensor (Duplex Exit) Service Check (External Duplex Only)

2-118 Service Manual
4062
Sensor (duplex input) service check (external duplex only)
Sensor (duplex exit) service check (external duplex only)
3
Check the above sensor for proper connection.
Is the above sensor connected properly?
Replace the
duplex input
sensor assembly
(internal duplex
only).
Go to “Duplex
input sensor
assembly
removal (T652,
T654)” on
page 4-11
or replace the
external duplex
unit assembly
(external duplex
only).
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
external duplex
unit assembly.
2
1. Enter the diagnostic mode
2. Select Duplex sensor tests
3. Select Sensor test
4. Observe the line item “input”
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 the
external duplex
unit assembly.
Replace the
connection.
Step Check Yes No
1 Check the sensor (duplex exit) for damage.
Is the above component free from damage?
Go to step 2. Replace the
external duplex
unit assembly.
2
1. Enter the diagnostic mode
2. Select Duplex sensor tests
3. Select Sensor test
4. Observe the line item “exit”
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 the
external duplex
unit assembly.
Replace the
connection.
Step Check Yes No