Toshiba e-STUDIO 2555C Service Manual page 747

Step Check Item
Transfer belt unit
3
Transfer belt
4
Drum and transfer belt
5
• Is the sensor shutter of the
image quality sensor opening
or closing normally? Or is it
6
normal without any damage?
• Is the sensor surface of the
image quality sensor clean?
Sensor unit
7
Sensor shutter
8
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Result Measure
Check if the transfer belt unit is
securely installed. Correct it if not.
Check if any toner image remains on
the transfer belt surface.
If any, check the installation status of
the TBU cleaner unit. If there is any
abnormality, correct it, and clean the
transfer belt.
Check if the drum and the transfer belt
are properly operated.
(ON: 03-101 / OFF: 03-151)
If the transfer belt rotates normally,
check if any abnormal stains (cleaning
defects), large scratches or breaking
are on the surface of transfer belt by
making full rotation of transfer belt.
Replace the transfer belt if any. Check
if the transfer belt is loose or heaving,
and correct it if needed.
If they are not rotating normally, check
if their drive gears are damaged or if
they contact the equipment. Correct it
if needed.
Yes
No
Take off the transfer belt unit so that
you can see the sensor unit.
• Check if the sensor shutter is
opening or closing normally.
(Opening: 03-125 / Closing: 03-
175)
If the sensor shutter is not opening
or closing, check if it is damaged or
there is any abnormality in the
sensor shutter solenoid.
* If the shutter is opened (03-125),
close the shutter (03-175).
• Check the connector and the
harness between the sensor shutter
solenoid and the LGC board. (LGC
CN337-8pin, 9pin)
• Slide the sensor shutter so that the
sensor surface can be seen.
Clean the sensor surface with a
cotton swab or a soft cloth.
Clean the area around the sensor
(e.g.: sensor shutter) if it is stained,
so that the sensor surface does not
become dirty.
e-STUDIO2555C/3055C/3555C/4555C/5055C
8 - 191
Next
Step
4
5
19*
9
7
19*
ERROR CODE AND TROUBLESHOOTING
8