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7. Developing section
A. DV side seals F/R replacement (Replace every 120K
copies.)
1
Remove two screws which are connecting the hopper section and
the developing unit, and separate them each other.
Fixing screw
Toner hopper
2
Replace the developing unit side seals F/R as shown below.
(Side seal R attachment reference)
(Side seal F attachment reference)
Note: Since the developing side seals are in the vicinity of the drum,
be careful of peeling off and defective attachment.
Fixing screw
Developing unit
B. DB blade replacement (Replace every 120K copies.)
1
Remove the old DV blade from the DV cover. (Remove the duplex
tape.)
2
Attach the new DV blade with the pasteboard as shown below.
(Attach the DV blade to the reference of A and the inscribed line
(
0.2). Do not allow extrusion from the edge. Do not allow
covering the inscribed line. The allowable reference shift is within
0.5mm from the inscribed line. Attach the sheet without being
wavy.
DV blade
3
Remove the base pasteboard from the DV blade.
Note: If the pasteboard is not removed, the drum is scratched.
C. V ring attachment
Be careful of the direction of the V ring when attaching it to the MG
roller and the MX roller.
V ring
Section A
Section A
V ring
1
As shown above, be careful of the direction of the V ring.
2
Do not allow clearance at section (A) between the V ring and each
roller.
3
Attach the MG roller and the right V ring as shown in the figure.
+5
(3.0
)
−0
Magnet fixing shaft
@ Note: When attaching the MG roller, put the milled surface up.
6 – 20
DV cover
V ring
(MG roller)
V ring
Section A
(MX roller)
φ6.5
MG roller
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