HP laserjet 3390, 3392 all-in-one Manuale Di Servizio

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If the all-in-one output has a consistent, repetitive defect, then use 

 to determine which part needs to be replaced based on the measured distance

between the repetitions of the defect.

The following table replaces the graphical repetitive defect ruler. You can make your

own ruler by using these measurements.

  Repetitive image defects

37.7 mm (1.48 inches)

Primary charging roller

Replace the print cartridge.

43.0 mm (1.69 inches)

Registration roller

Replace the registration assembly (see 

).

44.0 mm (1.73 inches)

Developing cylinder

Replace the print cartridge.

46.2 mm (1.82 inches)

Transfer roller

Replace the transfer roller.

56.5 mm (2.22 inches)

Fuser film

Replace the fuser (see 

69.0 mm (2.72 inches)

Pressure roller

Replace the fuser (see 

75.4 mm (2.97 inches)

Photosensitive drum

Replace the print cartridge.

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Chapter 7   Parts

ENWW