December 2000 © TOSHIBA TEC
4 - 59
1600/2000/2500 TROUBLESHOOTING
Measures
—
Clean rubber roller. Surface with alcohol
or replace it with new one.
Replace registration roller.
—
Replace process unit or drum (SRU type).
Clean drum, replace process unit or drum
(SRU type).
Reinstall main drive gear assembly prop-
erly.
Replace drum drive gear.
Replace drum drive gear.
Replace unit.
Criteria
Perform following procedures from 2 and
after.
—
Does the roller surface lack in friction and
is it slippery?
Uneven pitch approx. 94 mm overall?
Is there damage?
Is there any attached foreign matter?
Uneven pitch approx. 2.4 mm overall?
—
—
Uneven pitch approx. 0.3 mm overall?
Check item
Output built-in halftone
pattern on A3/LD.
(Code 109)
—
Check condition of
registration rubber roller
surface.
Check pattern.
Check drum surface.
Check drum surface.
Check pattern.
Check pattern.
Check pattern.
Check pattern.
01/11