Ricoh af 850 Service Manual r af850

RICOH Technical

Bulletin

PAGE: 1/3

Model:

Subject:
From:
Classification:

While SP2-207-2 (Toner Bank Toner Supply) is performed at installation, the rotation of
the toner hopper gear (AB013748: Joint Gear -15Z) may cause an oversupply of toner
from the hopper to the development unit. This in turn causes relatively high image density
in copies/printouts made just following installation. To correct this, machines in mass­production have been modi fied as fol lows:

Bellini

Toner Hopper Gear Replcement at Installation

Technical Services Dept., GTS Division

Troubleshooting
Mechanical
Paper path
Other ( )

Part information
Electrical
Transmit/receive

Date:

15-Dec-99

Prepared by:

Action required
Service manual revision
Retrofit information

H.K.

No.:

RA294001

Temporary Solution

The toner hopper contains a red idler gear (A2943255: Idler Gear - 15Z). This gear
reduces the drive supplied to the toner hopper and prevents the oversupply of toner that
occurs in the initial period following installation .

The toner hopper gear for normal operation (White gear:AB013748: Joint Gear -15Z) and
a spare C-ring (07200060B: Retaining Ring - M6) have been packed in the accessory
plastic bag.

The procedure for the Toner Hopper Drive Gear Replacement (Joint Gear - 15Z) has been
packed in the accessory plastic bag. The procedure is also included on page 2/3 of this
bulletin.

Action required

Replace the red idler gear with the white gear after carrying out SP2-207-2 (Toner Bank
Toner Supply) by referring to the procedure for the Toner Hopper Drive Gear Replacement
(Joint Gear - 15Z) packed in the accessory plastic bag. The red idler gear is not
necessary after machine installation.

Permanent Solution

The permanent solution is basically the same as the temporary solution. To facilitate gear
replacement, the gear has been mounted with screw (09513006B: Philips Screw With Flat
Washer - M3x6) instead of a C-ring. The procedure is included on page 3/3 of this bulletin.
Regarding the cut-in serial numbers for this modification, we will issue an MB as soon as
they are available.

Action required

Same as “Action required” described above.

RICOH Technical

Bulletin

PAGE: 2/3

Model:

The part number of the toner hopper unit will be changed from #A2943200 to a new part
number due to the above modification. If the toner hopper unit is replaced in the field,
replace the red idler gear in the new toner hopper with the white gear in the original toner
hopper unit.
The toner hopper unit part number will be therefore changed because of the gear
replacement and C-ring substitution. As the spare part of #A2943200 contains the white
gear, the old unit part can be replaced in the machines installed in the field. It is not
necessary to change the red gear to a white gear.

The following is the procedure packed in the accessory plastic bag as the temporary
solution. After step #35, remove the development unit and follow the instruction marked

with an asterisk (

Bellini

. Then, put back the development unit.

*

)

Date:

15-Dec-99

No.:

RA294001

Toner Hopper Drive Gear (Joint Gear 15Z) Replacement

Please add the gear replacement procedure (*) after step #35 (Toner Bank Toner Supply).

#35. Supply toner from the toner bank to the toner hopper as follows:

1) Select SP2-207-2 (Toner Bank Toner Suppl y)

2) Press the “Start key” on the LCD.
# *
#36. Change the paper size for all paper trays to suit the customer’s request.

Remove the Joint Gear 15Z that has been marked red [A].

*

Replace it with the white gear [B] and a spare C-ring packed in the accessory
plastic bag.

B

A

Toner Hopper Unit Rear View

RICOH Technical

Bulletin

PAGE: 3/3

Model:

The following is the procedure packed in the accessory plastic bag as the permanent
solution. After step #35, remove the development unit and follow the instruction marked

with an asterisk (

Bellini

. Then, put back the development unit.

*

)

Date:

15-Dec-99

No.:

RA294001

Toner Hopper Dr ive Gear (Joint Gear 15Z) Replacement

Please add the gear replacement procedure after step #35 (Toner Bank Toner Supply).

#35. Supply toner from the toner bank to the toner hopper as follows:

1) Select SP2-207-2 (Toner Bank Toner Suppl y)

2) Press the “Start key” on the LCD.
*:
#36. Change the paper size for all paper trays to suit the customer’s request.

*

Remove the Joint Gear 15Z that has been marked red [A].
Replace it with the white gear [B] and a spare C-ring packed in the
accessory plastic bag.

B

A

Toner Hopper Unit Rear View

RICOH Technical

Reissued: 03-Feb-00

Bulletin

PAGE: 1/5

Model:

RTB Correction

The following items in bold italics have been added.

Subject:
From:
Classification:

We have found that toner in the toner transport tube may be blocked due to vibrations during
machine transportation. Please note the following remarks and do the
machine is transported.

Bellini

Transportation Remarks

Technical Services Dept., GTS Division

Troubleshooting
Mechanical
Paper path
Other ( )

Part information
Electrical
Transmit/receive

Date:

15-Dec-99

Prepared by:

Action required
Service manual revision
Retrofit information

procedure when the

H.K.

No.:

RA294002a

3.9 TRANSPORTATION REMARKS

3.9.1 TONER TRANSPORT TUBE CLEANING

NOTE:

1) When transporting the machine, do the following operations. Otherwise, the
toner system may be blocked.

2) Be careful not to drop the toner.

3) If this procedure is not carried out, SC592 (Toner Bank Motor Error) or SC495

(Toner Bottle Unit Error) could be displayed and the toner transport tube and
screw should be replaced.

I. Procedure before transportation (Removing toner from the toner transport tube):

1. Close the toner bottle cap using SP5-804-62 (upper bottle) or -63 (lower bottle). Then
remove the toner bottles from the bank.

2. Remove the upper rear and lower rear covers.

3. Remove the upper left cover, lower left cover, upper right cover .

4. Remove the two screws [A] securing the toner supply cylinder.

5. Cover the end of the toner transport coil tube [B] with a plastic bag.

NOTE: See “Note for step 6”.

6. Energize the toner bank motor and toner supply coil clutch for 2 minutes using SP5­804-61 and -64 to remove all of the toner in the supply tube.

7. Re-install all removed parts except for the toner bottles.

NOTE for step 6:
Take extra caution not to bend the
toner transport coil tube [B]. If it is
bent, this can cause the coil (screw)
inside to be overloaded, locked, or
damaged. SC592 will be displayed,
and the coil (screw) inside should
be replaced.

[B]

RICOH Technical

Reissued: 03-Feb-00

Bulletin

PAGE: 2/5

Model:

NOTE: Make sure that three tubes are connected to the toner supply cylinder when
putting it back.

II. Procedure after transportation (loading toner into the toner transport tube):

1. Load the toner bottles into the toner bank.

2. Remove the upper right cover. Open the cylinder top cover and clean the inner surface

3. Energize the toner bank motor using SP5-804-61.

4. Energize the toner bottle motors for 5 to 6 seconds using SP5-804-59, -60.

5. Energize the toner supply coil clutch using SP5-804-64.

6. 50 to 60 seconds later, toner is supplied to the toner supply cylinder. Make sure that

7. Turn off the toner supply coil clutch and then the toner bank motor.

8. Return all removed parts.

Bellini

of the cylinder with a cloth to check the toner supply at step 6. Then, close the cylinder
top cover.

toner is properly supplied to the cylinder.

Date:

15-Dec-99

No.:

RA294002a

Note:

Do not energize the toner bottle motors for a long time, otherwise toner overflows in

the toner entrance tank.

RICOH Technical

Reissued: 03-Feb-00

Bulletin

PAGE: 3/5

Model:

Upon reviewing the previous Toner Bank Unit Removal procedure in the Service Manual,
the above procedures on pp.1-2 have been added as step 1:

6.11.2 TONER BANK UNIT REMOVAL

1. Follow steps 1 to 6 of the procedure before transportation.

2. Turn off the main switch and unplug the power cord. Follow steps 1 and 2 of the waste

toner bottle removal procedure.

I

Make sure that the power cord is unplugged before removing the noise
filter in the next step.

3 Remove the noise filter [C] (2 screws and 4 connectors; upper: Ã, Á white lower: Â,

4 Disconnect the three connectors [E] from the toner bank unit.

Bellini

CAUTION

yellow) and toner bank motor [D] (2 screws, 1 connector).

Date:

15-Dec-99

No.:

RA294002a

À

A294R903.WMF

[D]

A294R905.WMF

[C]

A294R904.WMF

[E]

RICOH Technical

Reissued: 03-Feb-00

Bulletin

PAGE: 4/5

Model:

5 Remove the two screws [A] securing the toner transport coil tube.
6 While sliding the toner transport coil tube, remove the snap ring [B].

[A]

A294R907.WMF

Bellini

Date:

15-Dec-99

No.:

RA294002a

[B]

A294R906.WMF

RICOH Technical

Reissued: 03-Feb-00

Bulletin

PAGE: 5/5

Model:

7 Remove the four screws [A] securing the toner bank unit.

8 Remove the screw [B] securing the toner recycling and collection cover [C].
9 While lifting the toner recycling and collection cover [C], pull out the toner bank unit.

10 Remove the plastic bag from the toner transport coil tube. Re-connect the toner supply

11 Perform Procedure II. described on pp.1-2 of this bulletin (“After Transportation”).

Bellini

NOTE:

NOTE:

cylinder to the toner transport coil tube (2 screws).

Try not to spill any toner from the toner bank.

When pullin g out the toner bank unit, toner may leak out of the junction

between the tube and toner bank. Place a cloth on the machine bottom plate
so that the plate does not become dirty.

Date:

15-Dec-99

No.:

RA294002a

[A]

[A]

[B]

A294R908.WMF

[C]

A294R909.WMF

RICOH Technical

Bulletin

PAGE: 1/1

Model:

Subject:
From:
Classification:

Bellini

SC495 (After installation)

Technical Services Dept., GTS Division

Troubleshooting
Mechanical
Paper path
Other ( )

Date:

Prepared by:

Part information
Electrical
Transmit/receive

31-Dec-99

Action required
Service manual revision
Retrofit information

No.:

RA294003

J. Mochizuki

SYMPTOM

SC495 is displayed while making copies. This symptom occurs soon after the machine
installation is completed.

CAUSE

When SP220 7 is performed at installation, the toner supply from the toner bank stops
before enough toner is supplied to the toner hopper.

This is because the toner hopper sensor tends to misdetect the toner amount before the
toner inside the toner hopper is stabilized.

SOLUTION

If this symptom occurs in the field, turn the main switch off and on. When enough toner is
supplied to the toner hopper, this problem will not reo ccur.

For a permanent countermeasure, the firmware has been changed to change the SP2207
operation. The firmware version was changed from Ver. 7.1 to Ver. 7.8.1.
The new firmware will be used from the January 2000 production.

Before modification:

While performing SP2207 (Forced toner supply), toner supply from the toner bank stops 4
minutes after the toner hopper sensor detects the toner.

After modification:

Toner supply stops 6 minutes after starting SP2207.
The part numbers (suffix) have been changed as follows:

Old (Ver 7.1) New (Ver 7.8.1)
P/N for the firmware (NA) A2945610B A2945610C
P/N for the firmware (EU) A2945660B A2945660C

It is recommended to install the new software (ver 7.8.1) before starting toner initial setting
with SP2207.

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PAGE: 1/3

Model:

Subject:
From:
Classification:

Note on reinstallation of the hot roller unit:

We have found that an audible resonance may occur inside the fusing unit while making
copies. To correct this, the method for reinstalling the hot rolle r unit has been changed.
Please correct the note on page 6-85 in the service manual as follows:

Old

5. Remove the four M5 pan head screws [B] and remove the hot roller unit [C].

New

Bellini

Noise from the fusing unit

Technical Services Dept., GTS Division

Troubleshooting
Mechanical
Paper path
Other ( )

NOTE: 1) When re -installing the hot roller unit, make sure that the flanges of

the ball bearings in the hot roller unit are set inside the fusing exit
side plate [D] and the gear in the hot roller unit is installed on the
rear side.

2) Secure the M5 pan head screws at the rear side first. Then, secure
the screws at the front side.

Part information
Electrical
Transmit/receive

Date:

31-Jan-00

Prepared by:

No.:

RA294004

H. K.

Action required
Service manual revision
Retrofit information

5. Remove the four M5 pan head screws [B] and remove the hot roller unit [C].
NOTE: 1) When re-installing the hot roller unit, make sure that the flanges of

the ball bearings in the hot roller unit are set inside the fusing exit side
plate [D] and the gear in the hot roller unit is installed on the rear side.

2) Secure the M5 pan head screws in the following order:

left-rear, right-front, right-rear, left-front.

[B]

[A]: Do not remove these screws.

[E]

[F]

[G]

[A]

[C][B]

[A]

[I]

A294R503.WMF

[D]

[H]

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PAGE: 2/3

Model:

Bellini

Date:

31-Jan-00

No.:

RA294004

Noise (resonance) during copying

An audible resonance may occur during copying. To correct this, machines in production
have been modified as follow s:

Temporary countermeasure applied from December 1999 production:

The screws for attaching the right lower fusing stay (#10:A2944059) and the rear fusing
plate (#15: A2944057) have been inserted from the front side. They were previously
inserted from the rear side.

Permanent countermeasure for machines in production:

The screw holes in the rear fusing plate have been changed from 4.1 ± 0.1 mm and

4.1 ± 0.1 x 6 mm to 4 mm. The screw holes in the right lower fusing stay have been

changed from 4 mm to 4.1 ± 0.1 mm and 4.1 ± 0.1 x 6 mm. Please note that for the
permanent countermeasure, the insertion direction of the screws for the right lower fusing
stay and rear fusing plate is unchanged (i.e. from the rear side).
The right lower fusing stay and rear fusing plate will be given new part numbers (see
below). The interchangeability between old and new parts is O/O as a set. Detailed parts

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Model:

information will be announced in an MB when the cut-in serial numbers are available.

P/N change:

-Right lower fusing stay: P/N changed from A2944059 to A2944099.

-Rear fusing plate: P/N changed from A2944057 to A2944094.

Action in the field for machines produced before December 1999:

If this symptom occurs on machines with the following serial numbers, please insert the
screws from the front instead of the rear side. Refer to the temporary countermeasure on
the previous page.

A29414,24; L0659110XXX, A29426: 4B11190XXX, A29415,17,22,27; H369110XXX

Bellini

Date:

31-Jan-00

No.:

RA294004

RICOH Technical

Bulletin

PAGE: 1/3

Model:

Subject:

From:

Bellini

Key Counter Extension Kit & Relay Key Counter
Harness

Technical Services Dept., GTS Division

Classification:

Troubleshooting
Mechanical
Paper path
Other ( )

Date:

Prepared by:

Part information
Electrical
Transmit/receive

03-Feb-00

Action required
Service manual revision
Retrofit information

No.:

RA294005

Hiroki Kobayashi

Part Number of the Key Counter Extension Kit

The part number for the extension cable is not listed in the parts catalogue or service
manual. This cable is required when installing the key counter together with the LCT, and
can be ordered as a spare part. For the installation procedure, please refer to page 3-27 of
the service manual.

The part number is as follows:

Old part

number

New part

Description Q’ty

number

A2949501 Key Counter Extension Kit

1

Key Counter Relay Harness - (Lanier Version Only)

Per Lanier's request, the Key Counter Relay Harness has been connected to the copier
key counter harness in production machines. This harness will allow the Lanier key
counter to be installed in the copier. Regarding the cut-in serial numbers, we will issue an
MB as soon as they are available.

#: New index in the parts catalog

Old part

number

A0965464 Key Counter Connector

New part

number

A2945496
A2945497

Description Q’ty Int Page Index Note

Key Counter Relay Harness

- Lanier
Key Counter Short
Connector - 4P

0 - 1

0 - 1
1 - 0

47 #27
47 #28

47 23

RICOH Technical

Bulletin

PAGE: 2/3

Model:

Bellini

[A]

Date:

#28: Key Counter Short
Connector.
Ricoh: A0965464
Lanier: A2945497

#28: Key Counter Short Connector.
Lanier: A2945497

03-Feb-00

No.:

RA294005

A2945496
#27: Key Counter Relay Harness.
This part includes the short connector
(A2945497).

CN1 has been connected to connector [A] of the copier harness (A2945098: SICU
Connect Harness). The service manual procedure for key counter installation has not been
changed. Because the key counter relay harness reverses the orientation of the four
harness cables, it is not necessary to add additional key counter relay harnesses to the
LCT (even if the optional LCT is installed).
In addition, the service manual procedure for key counter installation with the LCT remains
unchanged. (Key counter extension kit <A2949501> on page 1/3 is required.)

RICOH Technical

Bulletin

PAGE: 3/3

Model:

Note on attaching the new key counter relay harness in Lanier machines:

Do not install key counters for Ricoh copiers in Lanier copiers. This may damage the ICs
on the BICU board.

Do not connect the Ricoh short connector (A0965464: Key Counter Connector) to Lanier
copiers. This may also damage the ICs on the BICU board.

Bellini

Date:

03-Feb-00

No.:

RA294005

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ulletin

PAGE: 1/2

Model:

Subject:
From:

Bellini

Manual Correction

Technical Services Dept., GTS Division

Classification:

Troubleshooting
Mechanical
Paper path
Other ( )

Part information
Electrical
Transmit/receive

Date:

15-Feb-00

Prepared by:

J. Mochizuki

Action required
Service manual revision
Retrofit information

Please correct your Bellini service manuals as follows:

Location: Incorrect description: Correct description: Note:

Page 1-2
Toner Yield:
Page 1-8
Item 3
Page 1-8

55k copies 53k copies

3. Tray 3 (1,500-sheet
LCT)

4. Tray 2 (550-sheet) 4. Tray 2 (500-sheet)

3. Tray 3 (500-sheet)

No.:

RA294006

Item 4
Page 2-105

Last paragraph,
second sentence.

Page 3-11
Step 33-3
Page 3-11
Step 39 Note

Page 4-17
SP2-301-3

Page 4-37
SP4-903-84, 85
“Setting” Column

Page 4-38
SP4-904-5

400K 300K The yield of the oil

supply cleaning web is
300K.

Hold down the clear/stop
key

Perform SP6-009 (DF
Free Run)

If the user normally feeds
thicker paper from the
by-pass tray, use a
higher setting.

0 ∼ 5
1/step

2

Please delete this mode from the manual. This mode has been

Hold down the clear key

Perform SP6-008-3 (DF
Output Check)

If the user normally feeds
thicker paper, use a
higher setting.

0 ∼ 2
1/step

2

Using SP6-008-3
makes it easier to
remove dust.

removed from the first

production lot.
Page 4-42
SP5-038
“Setting” Column

0: No

1: Yes

The default setting was

missing.

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PAGE: 2/2

Model:

Page 4-47
SP6-116
“Function”

Column
Page 7-31

Page 2-80

Bellini

Incorrect

Paper Size

Switch

00111 A3-L 11" x 17"-L
00011 8
10011 A4-L 8
01001 A4-S 8
00100 8
00010 — 8" x 10"-S
00001 A5-S 8" x 10"-L
10000 8 k-L (Taiwan version only) 8" x 13"-L
11000 16 k-L (Taiwan version only) 10" x 14"-L
11100 16 k-S (Taiwan version only) 11" x 15"-L
11110

Date:

Multiply

by this number to
determine the staple limit
number for thick paper
mode.

SC735: Finisher Exit
Guide Error

Paper size switch and paper size (see the tables
below)

the normal limit

A4/A3 Version LT/DLT Version

" x 13" 8

1/4

" x 13" 5

1/2

✻✻

Divide

by this number to
determine the staple limit
number for thick paper
mode.

SC736: Finisher Exit
Guide Error

the normal limit

Paper Size

15-Feb-00

1/2
1/2
1/2

1/2

" x 14"-L
" x 11"-L
" x 11"-S

" x 8

1/2

"-S

No.:

RA294006

Correct

Paper Size

Paper Size

Switch

01111
00111
10011 A4-L 8
01001 A4-S 8
00100 8
00010
00001 A5-S
10000 8 k-L (Taiwan version only)
11000 16 k-L (Taiwan version only)
11100 16 k-S (Taiwan version only)
11110

A4/A3 Version LT/DLT Version

A3-L 11" x 17"-L

8

" x 13" 8

1/4

" x 13" 5

1/2

A5-L

✻✻

" x 14"-L

1/2

" x 11"-L

1/2

" x 11"-S

1/2

" x 8

1/2

5

1/2

8" x 10

8" x 10"-L
8" x 13"-L
10" x 14"-L

" x 8

1/2

1/2

1/2

"-L

"-S

"-L

RICOH Technical

Reissued: 16-Mar-00

Bulletin

PAGE: 1/

5

Model:

Bellini

Date:

15-Dec-99

No.:

RA294001a

RTB Correction

The items in bold italics have been corrected added.

Subject:
From:
Classification:

While SP2-207-2 (Toner Bank Toner Supply) is performed at installation, the rotation of
the toner hopper gear (AB013748: Joint Gear -15Z) may cause an oversupply of toner
from the hopper to the development unit. This in turn causes relatively high image density
in copies/printouts made just following installation. To correct this, machines in mass­production have been modi fied as fol lows:

Toner Hopper Gear Replcement at Installation

Technical Services Dept., GTS Division

Troubleshooting
Mechanical
Paper path
Other ( )

Part information
Electrical
Transmit/receive

Prepared by:

Action required
Service manual revision
Retrofit information

H.K.

Temporary Solution

The toner hopper contains red idler gear (A2943255: Idler Gear - 15Z). This gear reduces
the drive supplied to the toner hopper and prevents the oversupply of toner that occurs in
the initial period following installation.

The toner hopper gear for normal operation (White gear:AB013748: Joint Gear -15Z) and
a spare C-ring (07200060B: Retaining Ring - M6) have been packed in the accessory
plastic bag.

The procedure for the Toner Hopper Drive Gear Replacement (Joint Gear - 15Z) has been
packed in the accessory plastic bag. The procedure is also included on page 2/3 of this
bulletin.

Action required

Replace the red idler gear with the white gear after carrying out SP2-207-2 (Toner Bank
Toner Supply) by referring to the procedure for the Toner Hopper Drive Gear Replacement
(Joint Gear - 15Z) packed in the accessory plastic bag. The red idler gear is not necessary
after machine installation.

Permanent Solution

The permanent solution is basically the same as the temporary solution. To facilitate gear
replacement, the gear has been mounted with a screw (09513006B: Philips Screw With
Flat Washer - M3x6) instead of a C-ring. The procedure is included on page 3/3 of this
bulletin. Regarding the cut-in serial numbers for this modification, we will issue an MB as
soon as they are available.

Action required

Same as “Action required” described above.

RICOH Technical

Reissued: 16-Mar-00

Bulletin

PAGE: 2/

5

Model:

The part number of the toner hopper unit will be changed from #A2943200 to a new part
number due to the above modificati o n.

field, perform SP2-207-2 using the red gear because the new toner hopper does not
contain any toner.

The toner hopper unit part number will therefore be changed because of the gear
replacement and C-ring substitution.

#A2943200 contains a white gear, this gear should be changed to the red gear when
installing A2943200 in machines already in the field. After performing SP2-207-2
with the red gear, it is necessary to reinstall the white gear.

The following is the procedure packed in the accessory plastic bag as the temporary
solution. After step #35, remove the development unit and follow the procedure labeled

(*)

Bellini

below.

When replacing the toner hopper unit in the

Please be aware that although the spare part

Then, put back the development unit.

Date:

15-Dec-99

No.:

RA294001a

Toner Hopper Drive Gear (Joint Gear 15Z) Replacement

Please add the gear replacement procedure (*) after step #35 (Toner Bank Toner Supply).

#35. Supply toner from the toner bank to the toner hopper as follows:

1) Select SP2-207-2(To ner Bank To ner Suppl y )

2) Press the “Start key” on the LCD.
# *
#36. Change the paper size for all paper trays to suit the customer’s request.

Remove the Joint Gear 15Z that has been marked red [A].

*

Replace it with the white gear [B] and a spare C-ring packed in the accessory
plastic bag.

B

A

Toner Hopper Unit Rear View

RICOH Technical

Reissued: 16-Mar-00

Bulletin

PAGE: 3/

5

Model:

The following is the procedure packed in the accessory plastic bag as the permanent
solution. After step #35, remove the development unit and follow the instruction marked

with an asterisk (*). Then, put back the developme nt uni t.

Bellini

Date:

15-Dec-99

No.:

RA294001a

Toner Hopper Dr ive Gear (Joint Gear 15Z) Replacement

Please add the gear replacement procedure after step #35 (Toner Bank Toner Supply).

#35. Supply toner from the toner bank to the toner hopper as follows:

1) Select SP2-207-2 (Toner Bank Toner Supply)

2) Press the “Start” key on the LCD.
*:
#36. Change the paper size for all paper trays to suit the customer’s request.

*

Remove the Joint Gear 15Z that has been marked red [A].

Replace it with the white gear [B] packed in the accessory plastic bag.

B

A

Toner Hopper Unit Rear View

RICOH Technical

Reissued: 16-Mar-00

Bulletin

PAGE: 4/

5

Model:

Please make note of the following necessary actions following each service activity
listed below:

Service activity Necessary action for

Developer replacement No further action is

Toner Hopper Unit
Replacement (empty toner
hopper installation).

Toner transport tube
cleaning (before and after
machine transportation).

Bellini

adding toner to the toner
hopper:

required. The white gear is
in the toner hopper unit.

* Refer to the procedures
described above in this
bulletin.

No further action is
required. The white gear is
in the toner hopper unit.

Date:

15-Dec-99

Remarks:

Toner can be supplied
from the toner hopper.

Toner is not in the toner
hopper. If the above action
is not carried out, SC495
will be displayed.

Toner is already inside the
development unit and
toner hopper.

No.:

RA294001a

Note for SP2-207-2

Occasionally, SP2-207-2 finishes within 2 seconds or so. If this happens, perform
SP2-207-2 again. Normally this mode will continue for about 5 minutes.

Reason
The mylar attached to the agitator in the toner hopper cleans the surface of the
toner hopper sensor. This is done so that the sensor will accurately detect the
amount of toner in the hopper. If the sensor detects toner in the hopper when SP2­207-2 is initiated, the SP mode will not be carried out. This is to prevent toner from
being mistakenly supplied. However, when the mylar is rotated to clean the sensor
surface, the sensor may sometimes detect the mylar and judge that there is still
toner present. This may occur even if there is no toner in the hopper.

RICOH Technical

Reissued: 16-Mar-00

Bulletin

PAGE: 5/

5

Model:

Bellini

Correction for service manual page 4-15

Please correct your service manual as follows:
Incorrect: 7 minutes
Correct : 5 minutes

2-207

Forced Toner Supply

1 Forced Toner

Supply

2 Toner Bank

Toner Setup

Forces toner supply for 7 seconds from
the toner bank through the toner hopper
to the development unit.

This mode finishes automatically after
the toner is supplied 7 times (1 s for
each time).

Turns on the main motor, development
motor, development bias, toner supply
motor and charge corona. Then turns on
the toner supply coil clutch to supply
toner to the toner hopper, but not to the
development unit. It takes about 5
minutes.

This mode should be used to fill the
toner transport path with toner after
cleaning the toner supply unit, or at
installation.

Date:

15-Dec-99

Start

Start

No.:

RA294001a

RICOH Technical

g

g

Bulletin

PAGE: 1/2

Model:

Subject:
From:

Bellini

SP2506

Technical Services Dept., GTS Division

Classification:

Troubleshooting
Mechanical
Paper path
Other ( )

Date:

Prepared by:

Part information
Electrical
Transmit/receive

16-Mar-00

Action required
Service manual revision
Retrofit information

H.K.

No.:

RA294007

SYMPTOM

In the Japanese market, it has been reported that vertical black lines have a tendency to
appear in copy images after long continuous copy jobs (10 hours).

CAUSE

Toner is not completely removed by the cleaning blade due to paper dust that accumulates
on the cleaning blade after long continuous copying. During the continuous copying, the
drum motor does not stop and turn in reverse to clean the edge of the cleaning blade.

SOLUTION

On the production line (from March production: SICU&BCU version

The default settings of SP2506-1 and -2 will be changed from March production so that the
drum motor stops and turns in reverse every 30 minutes during continuous copying to
clean the blade edge.

Default setting: 2506-1 (changed from No to

minutes

).

Yes

), 2506-2 (changed from 15 to

Here is the revised SP Mode table:

2-506

Cleaning Interval – Multiple Copy

1On/Off

2 Interval

Selects whether multiple copy jobs are
stopped at re
purposes:

1. Stop and turn the drum motor in reverse
to clean the cleaning blade edge.

B

2. Make an ID sensor pattern to correct the
toner density control.

The interval is determined by SP2-506-2.
Use if the drum gets dirty or images get too
pale or too dark during long copy jobs.

Selects the interval at which m u lti copy jobs

B

are stopped for blade cleaning.

ular intervals for the followin

V.7.28.1)

30

1: No

2: Yes

1 ~ 100
1 minute/step

30 minutes

RICOH Technical

Bulletin

PAGE: 2/2

Model:

Countermeasure in the field for machines produced up to February 2000:

Upgrade the SICU & BCU to V.7.28.1. Then, change the SP mode values as shown above
if the same symptom appears in the field.

Please note:

SP2-506-1 and –2

In order to activate the new default settings after you have installed the firmware, you must
enter the SP modes and manually change the settings to these new default values. After
this has been done, the machine will recognize these settings as the defaults.

If you change these two SP mode settings with versions older than 7.28.1, SC990 may
occur when printing out blank copies with the slip-sheet, cover sheet or chapter sheet
functions. Therefore, we recommend that you update the firmware to version V.7.28.1.

Continuous copy runs
Continuous copy runs are stopped for 5 or 6 seconds every 30 minutes to clean the edge

of the cleaning blade. However, the fusing unit maintains the ready temperature, as the
machine’s major internal mechanisms are not shut down during this interval.

Bellini

Date:

16-Mar-00

No.:

RA294007

RICOH Technical

Bulletin

PAGE: 1/3

Model:

Subject:
From:

Bellini

Dog Ear

Technical Services Dept., GTS Division

Classification:

Troubleshooting
Mechanical
Paper path
Other ( )

Date:

Prepared by:

Part information
Electrical
Transmit/receive

21-Mar-00

Action required
Service manual revision
Retrofit information

H.K.

No.:

RA294008

Symptom 1:

Dog ear at the rear side of the leading edge.

Cause:

The Fusing Exit Guide is not properly set. There is a small gap at the Rear Magnet Catch.
In addition, the hot roller strippers are not in the proper position when the exit guide is
closed due to the mechanical load of the stripper sliding mechanism.

Solution:

Temporary Solution: From December production.

In order to minimize the sliding mechanical load, apply grease to the Stripper Release
Slider in the following places:

- The 2 shoulder screw holes on the Guide Plate

- The 5 projections on the surface of the Exit Guide Bracket

Fusing Exit Guide

x

x

x

x

x

Guide Plate

Screw Holes

Exit Guide
Bracket

X: Projection

RICOH Technical

Bulletin

PAGE: 2/3

Model:

Type of grease: Grease Barrierta –JFE5 5/2 (P/N: A028 9300)

Permanent Solution: From March production.

In addition to applying grease to the stripper release slider, the shape of the Exit Guide
Plate has been modified to smooth the stripper sliding mechanism as an "improvement".
The part number is still the same.

Bellini

Date:

21-Mar-00

No.:

RA294008

Symptom 2:

Dog-ears have a tendency to occur when using curled paper.

Solution:

Temporary Solution:

To minimize this, the following modification has been applied to machines in mass
production:

The height of the holes has been changed from 4 x 10 mm to 5 x 10 mm, so the position of
the entrance guide has been raised by 1 mm on the production line.

Cut-in serial numbers
A294-14 L065003XXXX
A294-15 H3600200180
A294-17 H3600200220
A294-22 H3600200001

Entrance Guide

A294-24 L065003XXXX
A294-26 4B10200001
A294-27 H3600200051

RICOH Technical

Bulletin

PAGE: 3/3

Model:

Permanent Solution: From March production

Refer to Bellini MB No. 4 for details.

Bellini

Date:

21-Mar-00

No.:

RA294008

!"#$% T

echnical Bulletin

PAGE: 1/2

Model:

Subject:

From:

Bellini

Timing Belt Slipping Off

Technical Services Dept., GTS Division

Classification:

Troubleshooting

Mechanical

Paper path

Other ( )

Part information

Electrical

Transmit/receive

Date:

24-Apr-00

Prepared by:

H.K.

Action required

Service manual revision

Retrofit information

SYMPTOM

No paper feed from trays 2 and 3.

CAUSE

During rotation, the lower timing belt may tend to slip off the idler pulley.

SOLUTION

- Production line -

No.:

RA294009

A spacer (AA132212: Spacer – 8 x 22 x 1.5) will be added as a flange to prevent the belt
from slipping off the pulley. In addition, the orientation of the pulley (AB032716) will be
reversed.

This modification will be applied from May 2000 production.

- In the field -

If the problem occurs in the field, install the spacer as a flange and reverse the orientation
of the pulley.

!"#$% T

echnical Bulletin

PAGE: 2/2

Model:

Bellini

[C]

[A]

[B]

[D]

Date:

24-Apr-00

[E]Reverse the pulley [D].

No.:

RA294009

A294R930.WMF

Spacer Installation for the Lower Timing Belt (2nd & 3rd Trays)

1. Turn off the main switch.

2. Remove the lower rear cover.

3. Remove the PSU (5 screws, all connectors) and IOB board (4 screws, all connectors).
See Boards and Other Items in the service manual.

4. Remove the tension spring [A].

5. Remove the screw [B].

6. Remove the lower timing belt [C].

7. Remove the pulley [D] (1 E-ring).

8. Attach the spacer [E].

9. Reverse the pulley [D] and attach it as shown (1 E-ring).

10. Put back all removed parts.

!"#$% T

echnical Bulletin

PAGE: 1/3

Model:

Subject:

From:

Bellini

Toner bottle cap open/close mechanism faliure

Technical Services Dept., GTS Division

Classification:

Troubleshooting

Mechanical

Paper path

Other ( )

Part information

Electrical

Transmit/receive

Date:

01-May-00

Prepared by:

No.:

RA294010

H.K.

Action required

Service manual revision

Retrofit information

SYMPTOM

The open/close mechanism for the lower toner bottle cap does not work properly. In some
cases, the mechanism does not return the cap to the bottle, which causes the toner to spill
when the bottle is removed.
Note: This symptom occurs only with the lower toner bottle.

Occurrence conditions:

1. The lower toner bottle is not placed in the toner bank unit or the toner end

condition is detected for the lower toner bottle and:

2. The upper toner bottle is shaken several times before it is set.

CAUSE

If an operator shakes the bottle several times and then sets it in the machine, too much
toner will be supplied from the bottle. Normally, when the bottle cap is opened, about 30 to
40 g of toner is supplied. However, after the bottle has been shaken several times, this
amount can be up to 150 g.
In addition, if the upper bottle is installed first after having been shaken several times,
toner can get jammed in the lower bottle open/close mechanism, causing the mechanism
to lock.

SOLUTION

Production line (from April production: SICU&BCU version V.7.31.3)

-Software modification: If the upper toner bottle is set first, the machine LCD will instruct

the operator to install the lower toner bottle first.

-Decal: A caution decal [A] (A2941273) has been attached to the toner bank cover. Also,

step 3 of the existing toner bank decal [B] has been changed. This decal is attached to the
inner face of the toner bank cover.

The decal will read:

Do not shake toner bottle before setting.
Set lower toner bottle first.