Lexmark 4039-1XX Manuale Utente

Diagnostic Aids

These settings allow adjustment of the fuser to correct problems with 
paper curl or melting letterheads.

Paper curl in which the top and bottom of the page curl toward the 
printed side (hot paper curl) can be corrected by reducing the fuser 
temperature. Reduce the setting from Normal to No Boost; if 
necessary, reduce the setting further to Low Temperature. Verify that 
the toner is being adequately fused to the paper at the new 
temperature setting.

Paper curl in which the edges of the paper curl toward the printed 
side (cold paper curl) can corrected by increasing the fuser warm-up 
time. Use the lowest setting that corrects the problem. Setting “0” is 
the factory default and is the shortest warm-up time. Setting “5” 
increases warm-up time by 90 seconds; lower settings increase the 
time proportionately less. Settings other than “0” may reduce 
throughput. Use the + or - key to change the number and then select 
save.

Melting letterheads may be prevented by reducing the fuser 
temperature as described above for paper curl.

1. Enter Diagnostics mode. 

2. Select [Fuser Temperature]. 

3. Select [Normal], [No Boost], Or [Low Temperature]. 

4. Press Return to return to the Diagnostics mode main menu.

1. Enter Diagnostics mode. 

2. Select [Warm-Up Time]. 

3. Select a setting of “0” through “5”. Use the + or - key to change 

the number. 0 is the shortest fuser warm-up (factory setting). 5 is 
the longest fuser warm-up. 

4. Press Return to return to the Diagnostics main menu.