Lvps Service Check; Toner Density Sensor Service Check - Lexmark MS410 Series Service Manual

LVPS service check

Action
Step 1
Check if the power supply cable is properly connected to the controller
board.
Is it properly connected?
Step 2
a
Turn off the printer.
b
Remove the power cord.
c
Measure the resistance between terminals A and D of the power
supply socket.
Is the resistance approximately 30 ohms?

Toner density sensor service check

Action
Step 1
Remove the transfer roll, and check for loose toner blocking the toner
density sensor.
Is it free of loose toner?
Step 2
Check the toner density sensor for proper operation:
a
Lower the ACM assembly.
b
Move the toner density sensor wiper from left to right.
Does it move freely?
Step 3
Check the toner density sensor cable for proper connection to the
controller board.
Is it properly connected?
Step 4
Check the toner density sensor cable for damage and pinch points.
Is it free of damage?
Yes
Go to step 2.
Contact your next level
of support.
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Replace the controller
board. See
board removal" on
page
Diagnostic information
84
No
Reseat the cables.
Replace the power
supply. See
supply removal" on
page 191.
No
Clean the sensor.
Reinstall the wiper
properly. If it still
cannot move freely,
replace the toner
density sensor. See
"Toner density sensor
removal" on page
196.
Reseat the cable.
Replace the toner
"Controller density sensor. See
"Toner density sensor
164. removal" on page
196.
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"Power