Gestetner G060, Service Manual

Page: 913 / 1106

Copyright

2002 RICOH Corporation. All rights reserved.
TECHNICAL SERVICE BULLETIN
BULLETIN NUMBER: G060/G570 - 011 09/18/2002
APPLICABLE MODEL:
GESTETNER – DSc38/DSc38S
RICOH – AP3800C/AP3800CMF
SAVIN – SLP38c/SLP38cS
SUBJECT: LOW HUMMING NOISE FROM PAPER TRANSFER UNIT
SYMPTOM:
The machine makes a low humming noise while printing. The noise tends to be louder in 62.5mm/sec mode
(1200x1200 dpi, or OHP/Thick Paper mode).
CAUSE
The Transfer Charge Brushes become dirty with toner and/or dust. This increases the friction between the
fibers and Transfer Belt, causing the brush to vibrate and generate the humming noise.
SOLUTION
Production line modification:
Cushions (#G0603705) have been added to the Transfer Belt Unit to absorb the vibration of brushes. They
are attached directly onto the unit underneath the brushes. Please refer to the following table for the cut-in
serial number of this modification
UNITS AFFECTED:
All G060 copiers manufactured after the Serial Numbers listed below will have the new style ((Part Name))
installed during production
MODEL NAME SERIAL NUMBER
Gestetner DSc38/ DSc38S P6010800001
Ricoh AP3800C/ AP3800CMF P6010800001
Savin SLP38c/ SLP38cS P6010800001
Troubleshooting in the field:
Attach the cushions (#G0603705: 4pcs/machine) onto the transfer charge brushes as shown below (this is to
reduce the working time in the field. Installing the cushions onto the transfer unit would require belt removal).
Please refer to the following pages for the detailed procedure.
Continued…
Not
e: Thi
s c
opy i
s i
ntended as a m
ast
er ori
ginal
f
or reproduct
ion o
f addi
tional
bul
le
tin
s.
„
M
E
CHANI
CAL