Lexmark MX910de Service Manual page 154

Action
Step 5
a
Make sure that the toner is properly installed.
b
Make sure that the toner is supported.
Does the problem remain?
Step 6
a
Make sure that the sensor (toner density) is free of dust or debris.
b
Reseat the toner density sensor cable.
c
Check the sensor (toner density) and its cable for damage, and replace
if necessary.
Does the problem remain?
Step 7
a
Make sure that the toner agitator is properly installed.
b
Check the agitator for damage, and replace if necessary.
Does the problem remain?
Step 8
a
Make sure that the sensor (toner cartridge present) is free of dust or
debris.
b
Reseat the toner cartridge present sensor cable.
c
Check the sensor (toner cartridge present) and its cable for damage,
and replace if necessary. See
removal" on page 334.
Does the problem remain?
Step 9
Observe the motor (toner supply).
Is it working properly?
Step 10
a
Make sure that the toner supply motor cable is properly connected.
b
Check the motor (toner supply) and its cable for damage, and replace
if necessary. See "Motor (toner supply) removal" on page
Does the problem remain?
Step 11
Observe the motor (toner cartridge).
Is it working properly?
"Sensor (toner cartridge present)
Diagnostic information
154
Yes
Go to step 6.
Go to step 7.
Go to step 8.
Go to step 9.
Go to step 11.
Go to step 11.
332.
Go to step 13.
7421
No
The problem is solved.
The problem is solved.
The problem is solved.
The problem is solved.
Go to step 10.
The problem is solved.
Go to step 12.