Sharp AR-P300 (serv.man8) Service Manual / Technical Bulletin ▷ View online
Sharp Electronics (UK) Ltd., Technical Services Group
SMUDGY IMAGE RECEPTION RESULTING
FROM INCOMPLETE MG ROLLER ROTATION
.
1.Model Name:
MX-M350N/M350U/M450N/M450U
AR-M351N/M351U/M355N/M355U/M451N/M451U/M455N/M455U/M312U/M420U
AR-M280N/M280U/M300N/M300U/P350/M350/M350N/M350U/P450/M450/M450N/M450U
DM-3500/3501/3551/4500/4501/4551
AR-M280N/M280U/M300N/M300U/P350/M350/M350N/M350U/P450/M450/M450N/M450U
DM-3500/3501/3551/4500/4501/4551
2.Symptom:
Depending on the environment and frequency of usage, the DV coupling of the main driving
unit may rarely slow down, causing incorrect engagement of the MG gear of the DV unit with
the DV coupling.
If the MG gear does not correctly engage with the DV coupling, the MG roller of the DV unit
does not rotate correctly, resulting in smudgy image reception.
unit may rarely slow down, causing incorrect engagement of the MG gear of the DV unit with
the DV coupling.
If the MG gear does not correctly engage with the DV coupling, the MG roller of the DV unit
does not rotate correctly, resulting in smudgy image reception.
3.Description:
To keep the engagement between the MG gear and DV coupling, we have increased the
tension of the DV drive spring pressing the DV coupling 1.5 times (increase of load from 500 gf
to 750 gf) the tension of the existing DV drive springs. This provides the MG gear with smooth
engagement with the DV coupling
tension of the DV drive spring pressing the DV coupling 1.5 times (increase of load from 500 gf
to 750 gf) the tension of the existing DV drive springs. This provides the MG gear with smooth
engagement with the DV coupling
.
4.Action:
From middle of August 2008 production
TECHNICAL BULLETIN
Date: 1/9/08
Model: MXM350/450
Model: MXM350/450
Ref.: ARE-902
Colour:
White
Page:
1 of 2
Sharp Electronics (UK) Ltd., Technical Services Group
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
1
MX-M350N
MX-M350U
MX-M450N
MX-M450U
AR-M351N
AR-M351U
AR-M355N
AR-M355U
AR-M451N
AR-M451U
AR-M455N
AR-M455U
AR-M312U
AR-M420U
AR-M280N
AR-M280U
AR-M300N
AR-M300U
AR-P350
AR-M350
AR-M350N
AR-M350U
AR-P450
AR-M450
AR-M450N
AR-M450U
DM-3500
DM-3501
DM-3551
DM-4500
DM-4501
DM-4551
MX-M350U
MX-M450N
MX-M450U
AR-M351N
AR-M351U
AR-M355N
AR-M355U
AR-M451N
AR-M451U
AR-M455N
AR-M455U
AR-M312U
AR-M420U
AR-M280N
AR-M280U
AR-M300N
AR-M300U
AR-P350
AR-M350
AR-M350N
AR-M350U
AR-P450
AR-M450
AR-M450N
AR-M450U
DM-3500
DM-3501
DM-3551
DM-4500
DM-4501
DM-4551
ALL
4-4
MSPRC2616FCZZ
MSPRC2616FCZ1
AC DV drive spring
2008/8
Mid
3
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.
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