Toshiba e-STUDIO 5540C Service Manual page 1053

Cause/Section Step
Transfer belt 8 Is the transfer belt rotating
unit correctly?
2nd transfer 9 Check if there is no abnormality
unit on the surface of the 2nd transfer
roller.
10 Check if any white void in the
halftone occurs at the same time.
Transportation 11 Check if an abnormal value is set
speed for the transportation speed.
Drum motor 05-4520 (0 to 3)
Registration motor 05-4523 (0 to
3)
Fuser roller 05-4529 (0 to 6)
Transfer belt 12 The density stripe which occurs
once every few copies in certain
positions in the primary scanning
direction.
Check if the belt surface is
scratched.
The rotation period of the belt is
approx. 1118mm.
Transfer belt 13 Density belt pattern of 105mm
cleaning facing pitch
roller
Developer 14 Is the pitch of the density
sleeve fluctuation 43.5mm?
Jitter 15 Density stripe pattern (jitter) of
(1.9mm pitch) 1.9mm pitch in Black mode
printing
Jitter 16 Density stripe pattern (jitter) of
(1.35mm pitch) 135mm pitch in cyan and
magenta
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Check item
Install the transfer belt
drive motor correctly.
Replace the 2nd
transfer roller.
Apply the measure
following "25.5.27".
Change the value
back to the default.
Replace the transfer
belt.
Clean or replace the
transfer belt cleaning
facing roller.
Replace the developer
sleeve
Replace the developer
sleeve.
Replace the 2nd
transfer drive unit.
Replace the LSU.
Check if the laser
optical unit cooling fan
(front) is installed
properly.
Replace the fan if
there is an
abnormality.
8 - 297
Measures Remarks
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
8