MX-3500N, MX-3501N, MX-4500N, MX-4501N (serv.man137). 039-ABNORMAL NOISE AT THE LOWER HEAT ROLLER BEARINGS OF THE FUSER - Sharp Copying Equipment Technical Bulletin (repair manual)

mx-3500n, mx-3501n, mx-4500n, mx-4501n (serv.man137) technical bulletin
Model
MX-3500N MX-3501N MX-4500N MX-4501N (serv.man137)
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Technical Bulletin
Brand
Device
Copying Equipment / 039-ABNORMAL NOISE AT THE LOWER HEAT ROLLER BEARINGS OF THE FUSER
File
mx-3500n-mx-3501n-mx-4500n-mx-4501n-sm137.pdf
Date

Read Sharp MX-3500N / MX-3501N / MX-4500N / MX-4501N (serv.man137) Technical Bulletin online

Sharp Electronics (UK) Ltd., Technical Services Group
CCE-388
1. Model Name
MX3500N – MX4500N – MX3501N – MX4501N
2. Symptom
The lower HR bearings attached to the lower heat roller of the fuser unit sometimes
makes abnormal noise.
3. Description
In order to suppress the abnormal noise, we have replaced the lower HR bearings and the
lower heat roller of the above mentioned models with those used by another models.
* The inner surface of the lower HR bearing that faces the lower heat roller is resin-
finished.
* The external diameter of the bearing mounting shafts (both front and rear) of the lower
heat roller, which the lower HR bearings are attached to, is shorter than those of the
previous lower heat roller. Also, the length of the shaft is 2mm shorter than those of the
previous ones.
We have stopped using two pieces of the roller stopper 20 (both front and rear) located
between the lower heat roller and the lower HR bearings for the reason described above.
Also, we have changed the part code of the lower heat roller unit owing to the
replacement of the lower HR bearings and the lower heat roller.
Note: Apply heat-resistant grease (UKOG-0235FCZZ) to the shafts of the lower heat
roller, which the roller bearings are attached to, at the replacement of the lower
heat roller.
The quantity of the grease application is about 3 rice-grain size (0.2g). Apply the
grease evenly to all over the above mentioned shafts.
ABNORMAL NOISE AT THE LOWER HEAT
ROLLER BEARINGS OF THE FUSER
TECHNICAL BULLETIN
Date:
2
nd
 February 2007
Model: 
MX3500N – MX4500N
MX3501N – MX4501N
Ref.:
039
Colour: 
White
Page:
1 of 2
Sharp Electronics (UK) Ltd., Technical Services Group
CCE-388
                                      
4. Action
From October 2006 Production
5. Parts Action
Current parts
New parts
Ref.
No.
Model
name
Version P/G No.
Parts code
Parts code
Price
rank
Parts name
Effective
time
Inter-
change-
ability
Number
32-11
NBRGY0762FCZZ NBRGY0838FCZZ
AS
Lower heat roller
bearing
2
32-13
NROLI1571FCZ1
NROLI1571FCZ3
BQ
Lower heat roller
1
32-10
MSPRD3058FCZZ
Quantity change
 2
AC
Roller stopper 20
5
2
32-502
CROLI1571DS52
CROLI1571DS53
BS
Lower heat roller
unit
2006/10
3
1
MX-3500N
MX-3501N
MX-4500N
MX-4501N
ALL
---
---
UKOG-0235FCZZ
BC
Heat-resistant
grease
---
---
1
<Interchange>
1. Interchangeable.
4. Not interchangeable.
2. Current type can be used in place of new type.
New type cannot be used in place of current type.
5. Interchangeable if replaced with same types of
related parts in use.
3. Current type cannot be used in place of new type.
New type can be used in place of current type.
6. Others.
Parts marked with "
" is important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
Page of 2
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