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170 MFP disassembly/assembly ENWW
Cleaning/toner recycle unit
Removing and reinstalling the
cleaning blade
CAUTION Be sure the power cord has
been unplugged from the
wall outlet.
Be sure to replace the
following parts at the same
time:
Cleaning blade
Toner guide roller (TGR)
Do not touch the edges of
the cleaning blade with
bare hands.
When reinstalling the
cleaning blade, apply
setting powder to the entire
surface of the drum and
cleaning blade regardless
of whether the drum and
cleaning blade are new or
old.
When you have applied
setting powder to the drum,
perform the following
before installing the drum
unit on the MFP:
-- To ensure accurate toner
concentration, wipe
scattered setting powder
off the γ sensor and Dmax
(maximum contrast)/JAM
sensor on the toner control
sensor board with a rag
moistened with alcohol.
-- With the charging corona
unit and developing unit
removed, turn the drum
once (to prevent setting
powder from scattering
onto the charging corona
unit, and to prevent image
defects).
Procedure
1 Remove the drum unit. See “Drum unit” on
page 152.
2 Remove the charging corona unit. See
“Corona unit” on page 159.
3 Remove the developing unit. “Developing
unit” on page 166.
4 Remove two screws to remove the cleaner
cover.
5 Check that the blade fusing component is
released. If it is not, release it referring to
“Drum unit” on page 152.
Screws
Cleaner cover
Screw
Released
position
Blade fixing component