Kyocera FS-C5150, FS-C2026, FS-5250, FS-2126MFP ServiceBulletin 2KT-0018-C341
(Page.1/2)
Subject
Change of Engagement Mechanism of the Drive Section
(Measures against Abnormal Noise)
Model l:
FS-C5150DN, FS-C5250DN, FS-C2026MFP, FS-C2126MFP,
FS-C2026MFP+, FS-C2126MFP+, FS-C2526MFP,
FS-C2626MFP
KDC’s Classification Entire Stock Rework In-Field modification at next visit
In-Field modification by case No modification necessary
Field Measure:
Please replace DR-590B with the new one (No.1 or No.2) when the phenomenon described below occurs.
Serial Nos. of the Affected Machines: Please refer to the following.
[DR-590B] (Unit circled in red line)
DR-590B: Motor's side
DR-590B: Gear's side
Joint gears (X and Y are inserted into the same shaft):
By switching the gear Z by the worm gear when switching to full-color
mode, the gear X is shifted to thrust direction to engage the gear Y or
to release.
(B/W mode: Gear X and Y released, Full-color mode: Gear engaged)
Part the teeth skip
(Teeth of the gear Z
and the worm gear)
Worm gear
Gear Z (Above is the state of
switching to the full-color mode)
Service Bulletin Ref. No. 2KT-0018 (C341)
<Date> January 8, 2013
Topic
In a rare case, if the ribs of the joint gears contact each other when switching to the full-color mode (when engaging
the gears), the worm gear might skip the teeth of its opposite gear Z due to the excessive loads applied to the
developer drive gears engagement mechanism when the engagement operation momentarily stops, which might
cause some abnormal noise. As the countermeasures, the shape of the joint gears was changed as follows in order
to reduce the loads applied at gear engagement.
Content of Changes
The rib shapes at the engagement side of the joint gears (X, Y) of the drum/developer drive unit (DR-590B) were
partly cut in order to avoid the contact with their surface.
KYOCERA Document Solutions Europe
Customer Services & Support Division (CSSD)
(Page.2/2)
No.
Old Part
No.
New Part
No.
Description
Q’
ty
Com
bi
patility
Remarks
Old
New
Old
New
1
302KV93100
2KV93100
302KV93101
2KV93101
DR-590B
1 1 X O Except KDKR
Model Name
Item No.
Destination
Affected Ser. No.
FS-C5150DN
1102KT3NL0
KDE
Q522Y42294
1102KT3UT0
UTAX/TA
Q862Y03013
1102KT3LV0
Olivetti
NHT2Y00868
FS-C5250DN
1102KV3NL0
KDE
Q562Y35664
1102KV3UT0
UTAX/TA
Q872Y04924
Olivetti
Model Name
Item No.
Destination
Affected Serial No.
FS-C2026MFP
----------
ALL
No production
FS-C2126MFP
----------
ALL
No production
FS-C2026MFP+
1102MA3NL0
KDE
NN52Y06944
1102MA3UT0
UTAX/TA
NNW2Y01455
1102MA3LV0
Olivetti
NQB2Y00429
FS-C2126MFP+
1102MB3NL0
KDE
NN92Y18124
1102MB3UT0
UTAX/TA
NNX2Y06172
1102MB3LV0
Olivetti
NQC2Y00867
FS-C2526MFP
1102M83NL0
KDE
Next production
1102M83UT0
UTAX/TA
NNU2Y00356
1102M83LV0
Olivetti
Next production
FS-C2626MFP
1102M93NL0
KDE
NN12Y05984
1102M93UT0
UTAX/TA
NNV2Y01982
1102M93LV0
Olivetti
Next production
(New gear Y)
(Old gear X) (New gear X)
ｷﾞｱ X
Gear Y
<Joining gears: Below is when the removed gear Y is
turned over so that its joining side is visible.)>
The shape
of 3 parts
circled in red
line is same.
(Old gear Y)
3 parts
circled in red
line are the
same shape.
Shaded area
was cut.
Service Bulletin Ref. No. 2KT-0018 (C341)
<Date> January 8, 2013
Serial Nos. of the Affected Machines
KYOCERA Document Solutions Europe
Customer Services & Support Division (CSSD)
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