DOWNLOAD Sharp MX-6240N / MX-7040N (serv.man29) Service Manual ↓ Size: 48.94 MB | Pages: 72 in PDF or view online for FREE

MX-7040N  DISASSEMBLY AND ASSEMBLY  10 – 57

1)

Remove the primary transfer cleaner unit.

2)

Remove the primary transfer cleaner seal F/R.

CAUTION: When replacing the primary transfer cleaner seals F/R,

attach them to the attachment reference.

3)

Remove the screw, and remove the primary transfer cleaner
blade.

d. Primary transfer belt
1)

Remove the primary transfer cleaner unit.

2)

Remove the screw, and remove the separation pawl unit.
Remove the screw, and remove the guide rail.

CAUTION: When removing and installing, be careful not to scratch

the transfer belt with the separation pawl.

CAUTION: When putting the separation pawl unit on a flat surface,

put is with the separation pawl facing upward in order to
prevent against damage on the lead edge of the sepa-
ration pawl.

3)

Remove the screw on the front side of the primary transfer
unit. Turn the bearing 90Åãto rotate.

4)

Remove the screw, and slide the plate.

0mm

0.5mm

0mm

0.5mm

0mm

0.5mm

0mm

0.5mm

Edge

ref
erence

Edge

ref

erence

Edge reference

Edge reference

MX-7040N  DISASSEMBLY AND ASSEMBLY  10 – 58

5)

Fold the primary transfer unit 90

 to remove the primary trans-

fer belt.

CAUTION: Handle the primary transfer belt not to damage it. Also

do not touch the surface of the primary transfer belt with
bare hands.

CAUTION: Install so that the lot number printed surface the primary

transfer belt comes on the rear side.

CAUTION: When installing, check to confirm that the both ends of

the primary transfer belt are not positioned over the
transfer guide.

CAUTION: After replacement of the primary transfer belt, perform

the following procedures.

1)

With the primary transfer cleaner unit removed, apply starting
powder (UKOG-0123FCZZ) to the whole surface of the pri-
mary transfer belt.

2)

Attach the primary transfer cleaner unit.

3)

Manually rotate the transfer belt drive gear to remove starting
powder from the primary transfer belt clearly.

1)

Remove the primary transfer belt.

2)

Clean the primary transfer belt drive roller, the primary transfer
belt follower roller, the primary transfer belt tension roller, and
the primary transfer belt idle roller.

1)

Remove the primary transfer belt.

2)

Turn back the primary transfer unit.
Clean the PTC-opposing roller, the registration backup roller,
and the Y support roller.

g. Primary transfer roller
1)

Remove the primary transfer belt.

2)

Turn back the primary transfer unit.
Remove the screw, and remove the primary transfer roller.
Remove the primary transfer roller from the holder.

MX-7040N  DISASSEMBLY AND ASSEMBLY  10 – 59

h. Primary transfer belt drive gear
1)

Turn the coupling lock 90Åãto remove the primary transfer belt
drive gear.

a. PTC cleaner B, PTC cleaner, Charger wire
1)

Remove the front side cover of the PTC unit.

2)

Remove the PTC cleaner B, and remove the PTC cleaner.

CAUTION: When removing and installing, be careful not to catch

the PTC cleaner with the charger wire.

CAUTION: When installing the PTC cleaner B, check to confirm

that the pawl of the PTC cleaner is securely engaged.

CAUTION: After installation, check to confirm that the charger wire

is at the center of the cleaner pad. 

3)

Remove the rear side cover of the PTC unit.

4)

Loosen the screw, and remove the round terminal of the
charger wire from the mounting plate. Remove the spring, and
remove the charger wire.

CAUTION: To handle the charger wire, hold the round terminal and

do not touch the wire section directly. Be careful to keep
the wire free from dirt, oil, or twist and bend.

a. Image registration/Density sensor
1)

Open the shutter, and clean the image registration and the
density sensor.

MX-7040N  DISASSEMBLY AND ASSEMBLY  10 – 60

1)

Remove the screw, and remove the electrode holder. 

CAUTION: When attaching the electrode holder, check to confirm

that the roller shaft is inserted into the bearing.

2)

Remove the screw, and remove the positioning shaft.

3)

Remove the step screw, and remove the secondary transfer
belt unit.

4)

Remove the screw, and remove the holder. Remove the bear-
ing.

5)

Remove the secondary transfer belt follower roller and the sec-
ondary transfer belt. Remove the bearing of the frame.
Clean the secondary transfer belt follower roller and the sec-
ondary transfer belt.

CAUTION: When handling the transfer belt, use enough care to

keep it free from scratches and dirt.

CAUTION: When installing, be careful not to bring the transfer belt

in contact with the frame, etc., and not to break the
transfer belt.

CAUTION: When attaching the secondary transfer belt follower

roller, insert it from the vicinity of the secondary transfer
belt contact roller.

1)

Remove the secondary transfer belt.

2)

Clean the secondary transfer belt drive roller and the second-
ary transfer backup roller.