Replacement Of Cleaning Roller Pu (120K Kit) - Brother MFC-9420CN Service Manual

6.3.4 Replacement of Cleaning Roller PU (120K KIT)

<Criterion of Replacement>
Cleaning roller PU should be replaced with a new one according to the periodical maintenance
cycle set out in the
When time is due for replacement of cleaning roller PU, the following message appears in LCD of
the control panel.
NOTE: At the same time, replacement of the paper feed roller, the cleaning roller, the separator
pad and the transfer unit is strongly recommended.
<Purpose of Replacement>
To prevent the cleaning efficiency from declining due to deterioration of the cleaning roller PU.
CAUTION
• When assembling the cleaning roller PU, firstly connect the bearing and the bias pole.
• Prior to starting above assembling, reconfirm this connection to have been done properly.
<Necessary Tools and Replacement Materials>
(1) Two or three pieces of cotton cloth for cleaning.
(2) Cleaning roller PU (one unit)
<Work Procedures>
Sequence of Disassembling
(1) Turn off the machine's power switch.
(2) Open the scanner unit.
(3) Open the center cover of the machine.
Table 6-1.
Replace 120K Kit
Fig. 6-18
Center cover
6 -1 4 Confidential