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November 2003 © TOSHIBA TEC 4 - 19 e-STUDIO3511/4511 PREVENTIVE MAINTENANCE
Head of color auto-toner sensor
Color auto-toner
sensor unit
Reference plate
Color auto-toner
sensor unit
*j3. Color auto-toner sensor
The head of color auto-toner sensor is to be cleaned with a cotton swab or soft cloth with
sufficient alcohol filled in. The reference plate is to be cleaned by blowing off the adhered toner
with an air-spray type cleaner such as a blower brush or an air duster.
During replacement, coat the shaft of sensor shutter with the grease (Alvania No.2).
Fig. 4-212
Note:
Never clean the reference plate by touching it directly (e.g. brushing away the dust) since the
surface of reference plate will be scratched.
*j4. Polarity adjustment plate
Apply two-rice-grain-amount of FLOIL (GE-334C) to the polarity adjustment plate (feeding ter-
minal).
05/03
Fig. 4-213
*j5. Color toner cartridge sensor
Perform the cleaning of the surface of the color toner cartridge sensor when you replace the
color developer unit (e-STUDIO3511: 30,000 sheets / e-STUDIO4511: 37,500 sheets).
*j6. Front bearings of mixers
When exchanging the oil seals (rear side of mixer-1 and -2) of the color developer unit, replace
the front bearings of mixer-1 and -2 at the same time. Since the oil seal is attached to the front
bearings of mixer-1 and -2, apply grease when replacing them referring to *j2.