Lexmark 13P0150 - C 750dtn Color Laser Printer Service Manual page 79

No indication that Bin X is full OR No indication that Bin X is near full.
Step Actions and Questions
1
Sensor Cable installation - Check for correct installation of
the sensor cable at J5 on the Control Board.
Is the cable installed correctly?
2
Dual Output Bin X Sensor Assembly
Do either the Bin X Full or the Bin X Near Full Sensor fail
the sensor test?
3
Voltage - Check the voltages at J5-3 and J5-4. The voltages
should measure approximately +5 V dc.
Are the voltages correct?
990 Service - Bin X
Step Actions and Questions
1
Mechanical Linkage/DC Motor Assembly - Check the DC
motor cable connector to make sure it is installed at J4 on
the output expander Control Board.
Is the cable connected correctly?
2
Resistance Check - Disconnect J4 from the option board
and check the resistance of the motor on the cable
connector between J4-1 and J4-2. The resistance should
measure between 115 and 135 ohms.
Is the resistance correct?
3
DC Motor - Check between J4-1 and between J4-2 and the
case of the DC motor for shorts.
Is the DC Motor Shorted?
Note: If the DC Motor is found to be shorted damage may
result to the RIP board.
4
Output Expander Control Board Check - Disconnect the
motor cable J4 and check the voltages at J4 on the board.
Note: Use caution not to short to adjacent pins on the
connector.
The voltages measure approximately:
J4-1 (Motor Idle) +24 V dc
J4-2 (Motor Idle) +24 V dc
J4-3 (Motor Idle) +5 V dc
J4-4 (Motor Idle) +5 V dc
Are the voltages correct?
5060-XXX
Yes No
Go to step 2 Install the
cable correctly
Go to step 3 Call your next
level support
Replace the Replace the
sensor Control Board
Yes No
Go to Step 2 Reseat the
cable and
recheck for
correct
operation of
the option
Go to Step 3 Replace the
Mechanical
Linkage/DC
Motor
Assembly
Replace the Go to step 4
Mechanical
Linkage/DC
Motor
Assembly
Replace the Replace the
Output Mechanical
Expander Linkage/DC
Control Board Motor
Assembly
Diagnostic Information
2-59