Tektronix PHASER 380, Service Manual

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Phaser 380 Color Printer
7
Cleaning and Maintenance
Inspection
Rollers: Replace the rollers when you see any of the following defects:
■
Flat spots.
■
Out of roundness.
■
Cracked rubber.
■
Loss of traction (tackiness) causing pick or feed failures.
Gears: Replace gears that show any signs of wear or breakage. Look for these
problems:
■
Thinned gear teeth.
■
Bent or missing gear teeth; check especially where a metal gear drives
a plastic gear.
■
Fractured or cracked gears.
Belts: Inspect the belts for wear. There are seven rubber belts in the printer: a
belt from the process motor to the compound gear, two belts from the y-axis
motor drive, two belts on the cap/wipe/purge drive and two belts in the x-axis
drive. Look for these problems:
■
Loose rubber particles below the belts indicate a worn belt.
■
Missing teeth in the belts.
■
Cracking or moderate fraying; a small amount of fraying is inevitable,
so look for other signs of wear before replacing the belt.
Clutches: There are four clutches: two feed roller clutches, pick roller clutch
and the maintenance tray cam clutch. Symptoms of a malfunctioning clutch are
paper jams and error codes. In such cases, replace the clutch. The lower feeder
also features two clutches.