SB-2LC-0123-D148

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Service Bulletin Ref. No. 2LC-0123 (D148) <Date> July 25, 2013

KYOCERA Document Solutions Europe Customer Services & Support Division (CSSD)

Subject Measures against the Paper Conveying Sensor Non-arrival Jam (Prevention of Frictional Wear of the Paper Conveying Actuator)

Model l:

TASKalfa 5551ci, TASKalfa 4551ci, TASKalfa 3551ci, TASKalfa 3051ci, TASKalfa 5501i, TASKalfa 4501i, TASKalfa 3501i, TASKalfa 7550ci, TASKalfa 6550ci, TASKalfa 8000i, TASKalfa 6500i, TASKalfa 5550ci, TASKalfa 4550ci,TASKalfa 3550ci, TASKalfa 3050ci, TASKalfa 5500i, TASKalfa 4500i, TASKalfa 3500i, FS-C8650DN, FS-C8600DN, PF-730/PF-730(B)

Affected models:

PF-730 TASKalfa 7550ci/6550ci, TASKalfa 5550ci/4550ci/3550ci/3050ci, TASKalfa 8000i/6500i, TASKalfa 5500i/4500i/3500i, FS-C8650DN, FS-C8600DN

PF-730(B) TASKalfa 7550ci/6550ci, TASKalfa 5550ci/4550ci/3550ci/3050ci, TASKalfa 8000i/6500i, TASKalfa 5500i/4500i/3500i, FS-C8650DN, FS-C8600DN, TASKalfa 5551ci/4551ci/3551ci/3051ci, TASKalfa 5501i/4501i/3501i, next development high-end model

KDC's Classification Entire Stock Rework In-Field modification at next visit

In-Field modification by case No modification necessary

Field Measures: Please replace the paper conveying actuator (No.2) with new one when the phenomenon described below occurs. (Please refer to the page 3 and after for details on the replacement procedures.)

Serial Nos. of the Affected Machines:

- TASKalfa 5551ci/4551ci/3551ci/3051ci, TASKalfa 5501i/4501i/3501i,

TASKalfa 7550ci/6550ci, TASKalfa 8000i/6500i: From the available timing in the July 2013* production - Others: After using up the old stock

* The above is the plan at the present moment. Please note that this information is subject to change.

Topic If the paper detection margin decreases due to the aged frictional wear of the paper detection parts of the paper

conveying actuator (No.2), the paper conveying actuator might not detect wavy paper (moisture paper).

As a result, the paper conveying sensor could not be turned ON, which might cause paper conveying sensor

non-arrival jam (*).

(*) Paper conveying sensor non-arrival jam: 1502, 1503, 1504, 1904

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Content of changes (Please refer to the figure in the next page for more details on the changed shape.)

The shape of the paper detection part of the paper conveying actuator (No.2) was changed in order to prevent its

frictional wear and to improve the margins for the paper detection.

(500-sheet cassette feed section for the main unit)

JAM1502/JAM1503/JAM1504/JAM1904

No. Old Part

No. New Part

No. Description

Q ty. Com

bi pati- lity Remarks

Old New Old New

1 302K994131 2K994131

302K994132 2K994132

PARTS GUIDE FEED MIDDLE ASSY SP

1 1 X O

2 302K906560 2K906560

302N706500 2N706500

+ACTUATOR FEED LOW 1 1 X O

"+" mark at the beginning of the part name indicates that it is a component part.

Paper conveying actuator (No.2):

The entire actuator is rotated while the paper detection

part is pushed up by paper's leading edge when feeding

paper. Then, the actuator's interruption part for the

paper conveying sensor does not interrupt the sensor

and the paper conveying sensor is switched ON.

Paper conveying sensor (PCS/PFPCS2)

(Paper path without paper feeding)

(Paper path when feeding paper)

Paper detection part of the

old paper conveying

actuator (No.2)

Paper detection part of the

old paper conveying

actuator (No.2):

The paper detection part

protrudes to the paper

path even if paper is fed.

Therefore, it is frictionally

worn down due to the

contact with paper, and

the paper detection

margin is decreased.

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Change of the shape of the paper detection part

[Cross section of the neighboring parts of the

new paper conveying actuator]

(When the paper conveying sensor is ON)

(When the paper conveying sensor is OFF)

The shape was changed so that the paper

detection part will not protrude to paper

path in order to prevent its frictional wear.

Width of the protrusion from the paper detection

position at paper detection READY state was

increased by 3.1 mm to improve the paper detection

margin.

Convex part of

the paper

feeding guide

[Cross section of the neighboring parts of the old

paper conveying actuator]

(When the paper conveying sensor is ON)

(When the paper conveying sensor is OFF)

Width of the protrusion of the paper detection part to

paper path is 0.85 mm. The protrusion is frictionally

worn down due to the contact with paper and the

paper detection margin accordingly decreases.

Width of the protrusion from the paper detection position at paper detection READY state is 1.93 mm. (This is the paper detection margin.) --> The paper detection margin decreases due to the frictional wear of paper leading edge of detection part. (Max. 0.85 mm is reduced.)

Paper detection position Paper detection position

<Paper conveying actuator (No.2)>

(Old) (New)

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[Replacement procedure of the paper conveying actuator]

No. Procedure Details

1

Detach the following exterior covers

while referring to the Service Manual.

(The table to the right indicates the

applied pages.)

Mid-speed MFP 5551ci/4551ci 3551ci/3051ci

5501i/4501i/3501i

Right lower cover 1-5-2 (4) 1-5-2 (4)

Right lower rear cover 1-5-2 (5) 1-5-2 (5)

Right lower front cover 1-5-2 (6) 1-5-2 (6)

High-speed MFP 7550ci/6550ci 8000i/6500i

Paper conveying cover 1-5-3 1-5-3

PF conveying cover 1-5-3 1-5-3

Right lower rear cover 1-5-4 1-5-4

Right lower front cover 1-5-4 1-5-4

Mid-speed MFP 5550ci/4550ci 3550ci/3050ci

5500i/4500i/3500i

Right lower cover 1-5-3 1-5-3

Right lower rear cover 1-5-4 1-5-4

Right lower front cover 1-5-4 1-5-4

Mid-speed Printer C8650DN/C8600DN

Right lower cover 1-5-3

Right lower rear cover 1-5-4

Right lower front cover 1-5-4

Paper Feeder PF-730/730(B)

PF conveying cover 1-5-2

Interface cover Same as above

Right cover 1-5-3

2

Disconnect the connector at the machine

right rear side (x3) and remove the

connector wires from the wire saddle.

Connectors Wire saddle

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3 Remove the screw fixing the paper

conveying guide (x2).

4

Pull the front side of the paper conveying

guide (Note1) and then remove the stop

ring and the bushing.

(Note 1)

Note that the paper conveying guide may

be deformed if forcibly pulled.

Slightly pull it out until the paper

conveying guide naturally stops.

Screws

Paper conveying guide

Stop ring Bush

Machine right front side

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5

Slide the bush on the rear side of the

paper conveying guide backward (in the

direction of the arrow) and detach the

paper conveying guide from the main

unit. (Note 2)

(The paper conveying roller remains in

the main unit.)

(Note2)

Make sure not to forcibly pull the paper

conveying guide and not to give shock to

the clutch when detaching the paper

conveying guide since the clutch is

attached to the paper conveying roller

which will remain in the main unit.

6

Remove the paper conveying actuator

(No.2) and the spring from the paper

conveying guide.

Paper conveying actuator (No.2) Spring


Machine right rear side

Bush

Paper conveying roller

Machine right side


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7

Attach the new paper conveying actuator

(No.2) and the spring removed in the

Step 6 to the paper conveying guide.

(Hook the spring hooks to the bottom of

the paper detection part of the new paper

conveying actuator and the bent shape

of the paper conveying guide.)

8

Reattach the paper conveying guide to

the main unit.

At this time, push the paper conveying

actuator in the direction of the arrow

(Note 3) and put the paper conveying

roller's shaft remaining in the machine

between the photo-interruption part of

the paper conveying actuator and the

paper conveying sensor. Then, reattach

the paper conveying guide.

(Note 3)

Unless pushing the paper conveying

actuator, the paper conveying guide

cannot be reattached since the photo-

interruption part contacts the paper

conveying roller shaft in the machine.

9 Reassemble other parts in the reverse

order of disassembly.

New paper conveying actuator (No.2)

Spring


Spring

New paper conveying actuator (No.2)

Shaft of the paper conveying roller (It is located between the paper conveying sensor and the photo-interruption part.)

Paper conveying sensor Photo-interruption part of the paper conveying actuator

Documents

SB-2LC-0123-D148