Sharp AR-651 (serv.man17) Service Manual ▷ View online
AR-651/810 FUSER UNIT 14 - 13
14. 6. Disassembly and Replacement
[A] IH control board
(1) Open the front cover, turn the handle clockwise
and take off the transfer/transport unit.
C
G
S
C
S
(2) Remove 2 screws and open the cover forward
slowly.
(3) Remove 4 screws and release the IH coil fuser
harness.
Cautions:
1.
When installing the IH coil fuser harness, be careful
not to install it to a wrong place.
2.
Tighten 4 screws of the IH coil fuser harness
completely (tightening torque: 1.2~2.0Nm).
3.
Since the IH control board is a high-voltage section,
make sure to pull out the power cable at
mainte-
nance
and checkup, especially, be careful not to
touch the IGBT in turning on electricity at which it
becomes high-voltage.
(4) Disconnect 4 connectors, remove 9 screws, and
take off the IH control board.
Connector
(Yellow)
(Yellow)
C
S
G
S
C
S
C
S
FLOW
IGBT
Connector
(White)
(White)
Connector
AR-651/810 FUSER UNIT 14 - 14
[B] Fuser unit
(1) Remove 2 screws and open the cover forward
slowly.
(2) Remove 4 screws and release the IH coil fuser
harness. Disconnect 2 connectors.
(3) Remove 1 screw and open the cover 2 forward.
(4) Remove 1 screw move the fuser unit forward
and lift it off upward.
Notes: 1. Make sure that the harness (A) at the right
figure does not touch the bearing and shaft
of the transfer/transport unit when installing
the fuser unit.
2. Remove the fuser unit after fully lowering
the temperature or wear gloves and such
when removing it at a high temperature.
3. Hold B sections of the fuser unit when
installing/removing it.
[C] Cleaning web unit
(1) Remove 2 black screws and take off the cleaning
web unit.
Note: The cleaning web unit can be taken off without
removing the fuser unit.
(2) Remove 4 E-rings and take off the cleaning web.
(3) Remove 2 E-rings and take off the bushing and
gear.
Caution: Be careful not to create slack in the cleaning
web when installing it.
C
G
S
C
S
Connector
E-ring
E-ring
Cleaning web
E-ring
A
B
Cover 2
AR-651/810 FUSER UNIT 14 - 15
(4) Remove 2 E-rings and take off the web pushing
roller.
Cautions:
1.
Take up the cleaning web a little (3~5 rotations with
hand) after replacing the cleaning web and web
pushing roller.
2.
When installing the cleaning web unit to the fuser
unit, make sure that the web is not slacked off.
3.
Turn the fuser unit jam access knob 10~15 times to
adapt the cleaning web to the fuser roller. At this
time make sure that there is no defect caused by an
installing inadequacy.
4.
Make sure that the cleaning web is not
wrinkled
or slacked off.
5.
Set up the PM support mode “6S” and clear the
cleaning web counter. After clearing it, the web
motor automatically rotates for 65 seconds when
turning the power ON.
6.
Turn the power ON and make sure that “READY” is
displayed.
7.
Finally confirm the fuser unit is in a proper condition.
8.
Do not rotate the web motor for more than 2 min. at
the output check (03-124) since the cleaning web
may be slacked off when rolled up.
Note: Approximate remaining web can be seen through
the window at the fuser unit (shown by the right
figure).
Low
Full
E-ring
Pin
AR-651/810 FUSER UNIT 14 - 16
[D] IH coil
(1) Remove the cleaning web unit.
(2) Remove 2 screws and take off the fuser cover
(front).
(3) Remove 2 screws and take off the bracket.
(4) Pull out the IH coil.
Note: Make sure that the “C” and “S” harnesses of the
power supply harness comes to the left side when
installing the IH coil.
S
C
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