AR-M550 (serv.man90). Improvement Of The Fusing Unit — Sharp Copying Equipment Technical Bulletin (repair manual)

Model
AR-M550 (serv.man90)
Pages
6
Size
169.37 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Copying Equipment / Improvement Of The Fusing Unit
File
ar-m550-sm90.pdf
Date

View Sharp AR-M550 (serv.man90) Technical Bulletin online

Sharp Electronics (UK) Ltd., Technical Services Group
Model Name:
AR-M550U/M620U/M700U
Symptom:
Contamination of Fuser Unit and Dirty Copies (After Copying Large Volumes)
Description:
To resolve the ongoing issues with the AR700/701 FU (Fuser Unit), we have
abolished the current Fuser Units above and have released a new Fuser Unit.
The new fusing cleaning method enables the 300K maintenance cycle (250K
for ARM550)
No maintenance is required up to 300K for Normal Operation, we have set-up
an additional kit AR704KC. This is only to be used when the maintenance
cycle will be shorter than expected due to High Toner Coverage, A3 Printing
and Specialised Paper Stocks. The AR703FU (Fuser Unit) will not require
regular 150K maintenance interval like the previous Fuser Units. Please see
following page for KC parts listings.
The level of Fuser Unit differs on the production time, please see below:
Main Units Before Mass Production In July 2006
=
AR700FU
Main Units After Mass Production In August 2006
=
AR701FU
Main Units After Mass Production In April 2007
=
AR703FU
The new AR703FU (Fuser Unit) can only be upgraded; you are unable
to convert an AR700/701FU (Fuser Unit) to an AR703FU (Fuser Unit).
Maintenance kits have been set-up for the new fusing unit (AR703FU). These
can be ordered from September 07 using the following AR703KC (Cleaning
Kit) and AR704KC (Cleaning Sub Roller Kit).
Preventing Smudges On Copy/Print
Sheet Due To Stained Heat Roller
TECHNICAL BULLETIN
Date:
8
th
 June 2007
Model: 
ARM-550/620/700u
Ref.:
037
Colour: 
White
Page:
1 of 6
Sharp Electronics (UK) Ltd., Technical Services Group
The AR703FU (Fuser Unit) is stamped with an identification mark “N” on the
“caution high temperature” label for easy identification
“Mark 1” AR700 FU (Fuser Unit): – CL Plate System GRID
“Mark 2” AR701 FU (Fuser Unit): – CL Roller System is driven by an additional
Drive Frame modification.
“Mark 3” AR703 FU (Fuser Unit): - Slave CL Roller System CL Roller is driven
by the Heat Roller. The additional Drive Frame drives the upper Heat Roller.
See diagram below: -
“Mark1”
“Mark 2”
“Mark 3”
The AR703KC kit is not available to order until September 07. If you need to
order the KC kit due to routine maintenance cycles we have put together a
composite parts list utilising the AR700KC kit. Please see next page.
Sharp Electronics (UK) Ltd., Technical Services Group
The AR-704KC kit is not available to order until September 07. This is only to
be used when the maintenance cycle will be shorter than expected due to
High Toner Coverage, A3 Printing and Specialised Paper Stocks. If you need
to order the KC kit due to the above. Please see below composite parts list.
Note 1: - Be sure to upgrade the firmware to the latest version and change
the default values in the following Simulation codes, see below.
Current Firmware: -
Firmware Release Date (October 2005)
Model Name 
ROM Control No.  MAIN 
BOOT 
PCU 
SCN 
F01 Vu4.03. 
VM5.32A 
V03.10 
V02.10 
AR-M550U/AR-M620U/AR-M700U 
Maintenance kit (AR-704KC) - Not Available Until
Part name
Part code
Qty
Lower CL Roller DG2
NROLM1709FCZZ
1
Lower CL Roller DG2-SP N1
MSPRT3798FCZZ
2
CL Roller bearing
NBRGP0670FCZZ
6
CL Support Roller DG
NROLM1637FCZZ
1
Upper CL Roller N2
NROLN1730FCZZ
1
Lower CL Roller DG2-SP
MSPRT3789FCZZ
2
AR-704KC Kit
"Mark 3"
New fuser systemForward CL roller type
Model Name 
ROM Control No.  MAIN 
BOOT 
PCU 
SCN 
F01 Vn4.03. 
VM5.32A 
V03.10 
V02.10 
AR-M550N/AR-M620N/AR-M700N 
Maintenance kit (AR-700KC)
Plus these additional parts is equal to
Maintenance kit AR-703KC
(The full AR703 KC kit will be available approx Sept 07)
Part name
Part code
Qty
Part name
Part code
Qty
Part name
Part code
Qty Change
Heat CL sheet base
CDAIU0690FC02
1
Lower CL Roller DG2
NROLM1709FCZZ
1
Heat CL sheet base
CDAIU0690FC02
1
No change
Oil roller AS
CROLR1498FC32
1
Lower CL Roller DG2-SP N1
MSPRT3798FCZZ
2
Lower CL Roller DG2
NROLM1709FCZZ
1
Added
Pressure CL plate
LPLTM6430FCZZ
1
CL Roller bearing
NBRGP0670FCZZ
4
CL roller spring
MSPRT3028FCZZ
2
CL Support Roller DG
NROLM1637FCZZ
1
Lower CL Roller DG2-SP N1
MSPRT3798FCZZ
2
Added
CL Roller bearing
NBRGP0670FCZZ
2
Upper CL Roller N2
NROLN1730FCZZ
1
CL Roller bearing
NBRGP0670FCZZ
6
Qty change
Heat roller bearing
NBRGP0700FCZZ
2
Lower CL Roller DG2-SP
MSPRT3789FCZZ
2
Heat roller bearing
NBRGP0700FCZZ
2 No change
Upper heat roller
NROLI1627FCZZ
1
Fusing Paper Feed Upper PG
PGIDM2387FCZZ
1
Upper heat roller
NROLT1452FCZ2
1 No change
Pressure roller
NROLT1452FCZ2
1
Pressure roller
NROLI1627FCZZ
1 No change
Heat roller
NROLT1455FCZ1
1
Heat roller
NROLT1455FCZ1
1 No change
Lower separator pawl
PTME-0283FCZZ
4
Lower separator pawl
PTME-0300FCZZ
6 No change
Upper separator pawl
PTME-0300FCZZ
6
Upper separator pawl
PTME-0283FCZZ
4 No change
CL Support Roller DG
NROLM1637FCZZ
1
Added
Upper CL Roller N2
NROLN1730FCZZ
1
Added
Lower CL Roller DG2-SP
MSPRT3789FCZZ
2
Added
Fusing Paper Feed Upper PG
PGIDM2387FCZZ
1
Added
Previous fusing unit CL plate type
Composite Maintenance Kit For Dragon Fuser (703FU)
+
=
"Mark 1"
"Mark 3"
New fuser system Forward CL roller type
Sharp Electronics (UK) Ltd., Technical Services Group
To produce overall improvement in image quality or density, settings of the
following simulation test commands need to be changed.
Without the setting changes made above, excessive density of
Copying/Printing may cause stains on the fusing unit.
Detail Of Modification Of Dragon Fusing Unit: -
Part name
Part code
Qty
Detail of modification (Outline)
1
Flat Screw
LX-BZ0031GCPZ
3
The screw head is changed to flat type, since the screw head may touch the upper
CL roller.
2 Upper CL Plate R
LPLTM7526FCZZ
1 The shape is changed in accordance with the added upper CL roller SP N2.
Upper CL Roller SP N2
MSPRT3806FCZZ
1
Upper CL Roller SP N2
MSPRT3806FCZZ
1
4 Upper CL Plate F
LPLTM7525FCZZ
1 The shape is changed in accordance with the added upper CL roller SP N2.
5 Upper CL Roller  N2
NROLN1730FCZZ
1
It is changed from reverse-rotation type to forward-rotation type.  (There is no
change in the amount or viscosity of oil or the material or outer diameter of felt.)
6 CL Roller Bearing
NBRGP0670FCZZ
2
The bearing is changed in accordance with the CL which is changed to the forward-
rotation type.
7 M3x6blue screw
LX-BZ1066FCZZ
1 No change  (The screw to attach upper CL plate F)
The parts in the high-lighted cells are included in the package, but they are not attached to the fusing unit.
8 Fusing Paper Feed Upper PG
PGIDM2387FCZZ
1
The paper guide is changed from steel plate type to resin type.  (to reduce adhesion
of toner on the paper guide.)
9 Fusing Paper Feed Upper PG fixing plateLPLTM7527FCZZ
1 Added a steel plate to attach the fusing paper feed upper paper uide.
7 M3x6blue screw
LX-BZ1066FCZZ
1 Added screws to attach the two parts above.
10 CL Support Roller DG
NROLM1637FCZZ
1 No change
6 CL Roller Bearing
NBRGP0670FCZZ
2 No change
11  Lower CL roller DG2-SP
MSPRT3789FCZZ
2 The load is changed.
12 Grease JFE552
UKOG-0235FCZZ
2
posi
Grease is applied to the sub heat roller bearing.
Heat CL Sheat Board N AS
CDAIU0690FC02
1 No change
Heat Roller Pressure SP N1
MSPRT3799FCZZ
2 The load is changed.
13 Pressure Lever F DG2
CLEVF0893FC02
1
14 Pressure Lever R DG2
CLEVF0894FC02
1 The shape is changed in accordance with the change in the lower CL roller.
15 Lower CL Roller DG2
NROLM1709FCZZ
1
6 CL Roller Bearing
NBRGP0670FCZZ
2
16 Lower CL Roller DG2-SP N1 MSPRT3798FCZZ
2
The shape is changed in accordance with the change in the lower CL roller.
The load is changed.
Pressure SP is added to apply pressure to the upper CL roller of forward-rotation type.
3
The shape is changed in accordance with the change in the lower CL roller.
Chnaged from silicone rolelr to metal roller.
Page of 6
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Here you can view online or download Sharp AR-M550 (serv.man90) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp AR-M550 (serv.man90) Copying Equipment. Information contained in Sharp AR-M550 (serv.man90) service manual (repair manual) typically includes:

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  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).