Lexmark 13P0150 - C 750dtn Color Laser Printer Service Manual page 83

271 Paper Jam - Check Bin 1 displays.
Step Action and Questions
1
Bottom Pass Thru Sensor Flag - Check to make sure the
Bottom Pass Thru Sensor Flag is operating correctly and is
not binding, broken or any interference from the sensor
cable.
Is there any problem found with the sensor flag?
2
Bottom Pass Thru Sensor - Check to make the sensor is
correctly connected to J5 on the Control Board.
Is the sensor connected correctly?
3
Bottom Pass Thru Sensor voltage check1 - Disconnect the
pass thru sensor cable and check the voltage at J5-3 on the
board. The voltage measures approximately +5 V dc.
Is the voltage correct?
4
Bottom Pass Thru Sensor voltage check 2 - Check the
voltage at J5-2 on the board, the voltage measures
approximately 0 V dc.
Is the voltage correct?
274 Paper Jam - Check Bin 4 displays.
Note: When a 274 Paper Jam Check Bin 4 message displays, a problem exists with the
top pass thru sensor assembly or the control board.
Step Action and Questions
1
Top Pass Thru Sensor Flag - Check the top sensor flag for
correct operation, binding, broken parts or interference from
the sensor cable.
Are there any problem with the sensor flag?
2
Top Pass Thru Sensor - Check to make sure the top pass
thru sensor is correctly connected to J11 on the Control
Board.
Is the sensor connected correctly?
3
Top Pass Thru Sensor voltage check 1 - Disconnect the top
pass thru sensor at J11 and check the voltage at J11-3. The
voltage measures approximately +5 V dc.
Is the voltage correct?
4
Top Pass Thru Sensor voltage check 2 - Check the voltage
at J11-2, the voltage should measure approximately 0 V dc.
Is the voltage correct?
5060-XXX
Yes No
Fix or replace Go to Step 2
the flag
Go to Step 3 Reseat the
cable
Go to Step 4 Replace the
Control Board
Replace the Replace the
Sensor Control Board
Assembly
Yes No
Repair as Go to Step 2
necessary
Go to Step 3 Reseat the
cable
Go to Step 4 Replace the
Control Board
Replace the Replace the
Sensor Control Board
Assembly
Diagnostic Information
2-63