5016-001

Low Image Density Service Check

Note: Media which is out of specification, or media containing a high moisture content may cause this problem.

 

FRU

Action

 

 

 

1

Print Cartridges

Run the print quality tests pages and determine

 

 

the failing print cartridges producing light print or

 

 

low image density. The toner cartridge may also

 

 

be low on toner.

 

 

Replace any failing cartridges.

 

 

 

2

Intermediate

Be sure the ITM is installed correctly and the

 

Transfer Unit

contacts on the ITM are contacting the grid block 1

 

(ITM)

and 2 high voltage contacts.

 

 

If no problem is found try a new ITM unit.

 

 

 

3

Transfer Roller

Note: The transfer roll is spring loaded against the

 

 

inner cover so that it properly contacts the transfer

 

 

belt in the ITM unit.

 

 

Check the transfer roll for correct installation. Be

 

 

sure the transfer roll rotates freely.

 

 

Check the left and right side transfer roll springs

 

 

and bushings for signs of binding or damage.

 

 

Replace parts as necessary.

 

 

 

4

High Voltage

Check the high voltage contacts in grid block 1

 

Contacts

and 2 to ensure they are clean, not bent, deformed

 

Grid Block 1

or pitted.

 

Grid Block 2

If incorrect, replace the failing grid block assembly.

 

 

 

 

 

Diagnostic Information 2-87

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Lexmark 5016-001 manual Low Image Density Service Check