Lexmark X925 - Abnormal Theta Sensor; Temperature Humidity Sensor Error

2-50 Service Manual
7541-03x
132.xx Abnormal theta sensor
136.xx Temperature humidity sensor error
Step Action and questions Yes No
1 Is the reference pattern for the color plane alignment
printing properly on the transfer belt?
Go to step 4. Go to step 2.
2
Did all the colors print on the test pattern? Go to step 4. Go to step 3.
3
Replace the LED head of the colors that failed to print.
Did this fix the problem?
Problem solved Go to step 4.
4
Check CN01 on the HVPS, CN11 on the printhead
controller, and the CN1-4 for proper connections. Are
the connected properly?
Go to step 5. Connect the
cables properly.
5
Is the Theta sensor cable connected properly
connected to CN 8 on the printhead controller board
and Theta sensor?
Go to step 6. Properly connect
the cable to CN8
on the printhead
controller board
and Theta
sensor.
6
Is the sensor misaligned, the sponge blocking the
sensor and the cover opening and closing smoothly?
Properly align the
sensor and
reposition the
sponge on the
theta sensor
cover. Make sure
the cover opens
and closes
smoothly.
Go to step 7.
7
Replace the theta sensor Problem solved Go to step 8.
8
Replace the engine controller board. Does this fix the
problem?
Problem solved Go to step 9.
9
Replace the HVPS. Does this fix the problem? Problem solved. Contact your
second level
support.
Step Action and questions Yes No
1 Is CN4 on the MDCONT board securely connected Go to step 2 Connect the
cable securely.
2
Replace the humidity sensor cable. Does this fix the
problem?
Problem solved. Go to step 3.
3
Replace the temperature humidity sensor. Does this fix
the problem?
Problem solved. Replace the
printhead
controller board.