Lexmark T650 Service Manual - Page 165

T650, T652

Page 165 highlights

4062 Step Check Yes No 12 Perform a print test and check the duplex drive motor assembly for proper operation. Does the above component operate properly? Go to step 17. Replace the duplex drive motor assembly. Go to "Duplex drive motor assembly removal (T652, T654)" on page 4-19. 13 Check media origination. Go to step 14. Go to step 16. Did the media originate from the external duplex? 14 Check the sensor (duplex input) for proper operation. 1. Enter the diagnostic mode 2. Select Duplex tests Go to step 15. Replace the external duplex assembly. 3. Select sensor test 3. 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. 15 Check the sensor (duplex exit) for proper operation. 1. Enter the diagnostic mode 2. Select Duplex tests Go to step 17. Replace the external duplex assembly. 3. Select sensor test 3. Observe the line item "exist" Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked. 16 Check the two pick roll assemblies in the media tray being Go to step 17. picked from. Are the above components free of excess wear and contamination? Clean or replace the pick roll assembly. Go to "Pick roll assembly removal (T650, T652, T654)" on page 4-57 17 Check the aligner assembly for obstructions. Is the above component free from obstructions? Go to step 18. Remove obstructions. 18 Check the sensor (input) for proper operation. 1. Enter the diagnostic mode 2. Select Base sensor test The sensor is working properly. Go to step 20. Go to step 19. 3. 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. 19 Check the above sensor for proper connection. Is the above sensor connected properly? Replace the Sensor (input). Go to "Sensor (input) removal (T650, T652, T654)" on page 4-71. Replace the connection. Diagnostic information 2-131

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Diagnostic information
2-131
4062
12
Perform a print test and check the duplex drive motor
assembly for proper operation.
Does the above component operate properly?
Go to step 17.
Replace the
duplex drive motor
assembly.
Go to
“Duplex
drive motor
assembly
removal (T652,
T654)” on
page 4-19
.
13
Check media origination.
Did the media originate from the external duplex?
Go to step 14.
Go to step 16.
14
Check the sensor (duplex input) for proper operation.
1. Enter the diagnostic mode
2. Select Duplex tests
3. Select sensor test
3. 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.
Go to step 15.
Replace the
external duplex
assembly.
15
Check the sensor (duplex exit) for proper operation.
1. Enter the diagnostic mode
2. Select Duplex tests
3. Select sensor test
3. Observe the line item “exist”
Does the display on the operator panel, change every time
the sensing area of the above sensor is interrupted or
blocked.
Go to step 17.
Replace the
external duplex
assembly.
16
Check the two pick roll assemblies in the media tray being
picked from.
Are the above components free of excess wear and
contamination?
Go to step 17.
Clean or replace
the pick roll
assembly.
Go to
“Pick roll
assembly
removal (T650,
T652, T654)” on
page 4-57
17
Check the aligner assembly for obstructions.
Is the above component free from obstructions?
Go to step 18.
Remove
obstructions.
18
Check the sensor (input) for proper operation.
1. Enter the diagnostic mode
2. Select Base sensor test
3. 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 20.
Go to step 19.
19
Check the above sensor for proper connection.
Is the above sensor connected properly?
Replace the
Sensor (input).
Go to
“Sensor
(input) removal
(T650, T652,
T654)” on
page 4-71
.
Replace the
connection.
Step
Check
Yes
No