Ricoh B286, Service Manual

Page: 534 / 622

Around the Drum
B286/B289 6-26 SM
6.4.4 CORONA WIRE CLEANING
The corona wire is cleaned immediately after the main power switch or operation power
switch is switched on, if these two conditions occur at the same time:
! 600 m of paper fed through the machine since the last wire cleaning
! The temperature of the hot roller is less than 50°C (122°F)).
The interval between automatic wire cleaning (Default: 600 m) can be adjusted with
SP2804. This SP can also be set to clean the corona wire immediately after the machine is
switched on.
The wire cleaner motor [A] controls the cleaning pad [B].
When the cleaning pad gets to the left side (as shown above), the motor changes direction
and pulls the cleaning pad back to the home position on the right.
If the cleaning pad is not at the home position immediately after the main power is switched
on, the cleaning pad goes back to home position.
The actuator [C] for the wire cleaner sensor [D] turns while the cleaner moves. The signals
from this sensor tell the machine when the cleaning pad moves. If the wire cleaner stops
before it gets to the end, or if stops too long at the far left position, the wire cleaner sensor
detects an error.