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Cause Solution
Fuser is not within nip width specifications. Refer to the Table 7-39. Repetitive defect cause,
later in this chapter, to find out if the interval of the
poorly fixed places agrees with that of a fuser
sleeve. If so, replace the fuser sleeve unit.
Replace the fuser.
Fuser sleeve is scarred or damaged. Replace the fuser.
Pressure roller is scarred or damaged. Refer to the Table 7-39. Repetitive defect cause,
later in this chapter, to find out if the interval of the
poorly fixed places agrees with that of a pressure
roller. If so, replace the fuser.
Thermistor is deteriorated. Replace the fuser.
DC controller PCB is defective. Replace the DC controller PCB. Calibrate the
printer after replacing the DC controller. See
Calibrate Now, later in this chapter.
Image distortion
Table 7-33. Causes for distortion or blurring
Cause Solution
Transfer unit is defective. Replace the transfer unit. Calibrate the printer
after replacing the transfer unit. See
Calibrate
Now, later in this chapter.
Defective secondary transfer roller If it does not rotate smoothly or it is deformed,
replace the secondary transfer roller.
DC controller PCB is defective. Replace the DC controller PCB. Calibrate the
printer after replacing the DC controller. See
Calibrate Now, later in this chapter.
Color misregistration
If the misregistration occurs in a particular color, go to A. If it occurs in all colors, go to step
B; otherwise, perform the steps in order, from the top down.
Table 7-34. Causes for smearing
Cause Solution
The color misregistration is not properly
adjusted.
Calibrate the printer. See Calibrate Now, later in
this chapter.
Remove the ITB shipping locks. Open the front
door to access these locks. There are two locks
located on the left and right sides of the ITB
assembly toward the bottom (toward the printer)
of the door.
Table 7-32. Causes for poor fusing (continued)
398 Chapter 7 Troubleshooting ENWW