Ricoh VT2100 S Modification Bulletin vt2105

MODIFICATION BULLETIN NO. 1 PAGE 1 OF 5

ISSUED ON: October 15, ’93

Model N865 (VT2105, Ges5325, Rex1250, NSA CP325) Volt/Hz

Modified Article Reverse Roller Clutch

Reason for

To erase horizontal white line in photo mode

Modification

Draw

No.

Old Parts

No.

C2168122 C2168123 Main Control Board - 230V
C2168112 C2168113 Main Control Board - 115V
C2158045 C2158057 IC - Main Board

New Parts

No.

Description Rank

Q’ty Used

Old → New

1 → 1
1 → 1
1 → 1

Date of

Modification

Inter-

change-

ability

O/O 31 67
O/O 31 67
O/O 32 67

Part needed for replacement by new part

Part No. Description No. Page

Serial

Number

Parts

Catalog

Rank: A : Replace with new parts immediately.B : Replace with new parts at time of repair.C : Replace with new parts at time of overhaul.
I Interchangeability:
(1) When old and new parts are not mutually interchangeable, use additional parts or an assembly part as indicated in "Parts needed for
replacement by new part" to install the new part.
(2) The mark to the left of the slash indicates whether the old part can be used in the new machine, and the mark to the right indicates whether
the new part can be used in the old machine. x = Not interchangeable o = Interchangeable

MODIFICATION BULLETIN NO. 1 PAGE 2 OF 5

ISSUED ON: October 15, ’93

Draw

No.

Old Parts

No.

C2008440 Reverse Roller Solenoid
C2004223 Reverse Solenoid Bracket
C2004216 Reverse Roller Clutch Barrel
C2004217 Reverse Roller Clutch Sleeve
C2004215 Reverse Roller Clutch Spring
C2004213 Pulley - 28T
C2014068 Reverse Roller Clutch Pawl

56073616 Guide Plate Spring
06220060E Spring Pin - 2 x 6mm
03140080Z Philips Screw - 4 x 8

05740060E

New Parts

No.

Description Rank

Hexagon Headless Screw ­M4 x 6

Q’ty Used

Old → New

1 → 0
1 → 0
1 → 0
1 → 0
1 → 0
1 → 0
1 → 0
1 → 0
1 → 0
1 → 0

1 → 0

Inter-

change-

ability

Part needed for replacement by new part

Part No. Description No. Page

X/O as a set

Parts

Catalog

03130200Z Philips Screw - 3 x 5

C2134046 Upper Reverse Roller

C2154200 Clutch Stopper
C2158240 Reverse Roller Clutch

09604008Z Flange Head Screw - 4 x 8

C2154046 Upper Reverse Roller

1 → 0
1 → 0
0 → 1
0 → 1
0 → 1
0 → 1

MODIFICATION BULLETIN NO. 1 PAGE 3 OF 5

ISSUED ON: October 15, ’93

DETAILS OF MODIFICATION

It has been found that a horizontal thin white line appears 64 mm from the lead ing edge of prints. The line may be visible whe n
the image is made using the photo mode . This line is caused by a shock wave when the master is clamped by the drum master
clamper.

1. To erase this white line, th e software has been changed to de lay th e timing of the master clampin g. Wit h th e old software,
the reverse roller solenoid [A] and the ma ste r clamper solenoid were turned of f at the same time . (Due to th e slow resp on se of
the old spring clutch, th e reve rse rolle r st ops f eeding the master after the maste r was cla mpe d. ) Th e new so ft ware ena ble s tha t
the master is clamped when the master is fed 2 mm further after the reverse roller stops feeding the master. This allows t o
make a small buckle of the master, which ab sorb s the shock wave , be twe en the plat en roller an d th e reverse roller before the
leading edge of the mast er is clamped.

The new ROM can be used also for existing machines. The only side ef fe ct is t hat the image on prints is forwarded about 1 or 2
mm due to the slow response of the old mechan ism. (This valu e varies due to ratchets of the clutch gea r.) If the old ROM is
used for a modified ma chin e (this is the same situation as the ne w clu tch me cha nism installed on the old machine), the image
is shifted approximately 0.6 mm backwards.

NOTE: The part numbers of the RO Ms and main PCBs for the VT2000 series have been changed. The main PCB s have not
been changed except for the ROMs. The old PCBs and the ne w PCBs are in te rchangeable.

2. To enable the proper reverse rolle r stop timing , the reverse roller clutch mechanism ha s been cha ng ed from th e con bination
of a solenoid [A] and a spring clutch [B] to an elect rical clutch [C]. To cope with the strictly contro lled reverse roller stop timing,
the electrical clutch respo nds a lit tle bit quicker than the old clutch mechanism. (If the old sprin g clutch is used, the only side
effect is as mentioned above.)

To make assembly of the clutch sto pp er [E ] in the factory easier, a pro ject ion [F] is added on the right side plate [D]
(C2164005). Even if the side plate does not have this projection, the clutch stopp er can be installed on the side plate with one
screw [G] (09604008Z). So, the part number of the righ t side plat e ha s not been changed. Also, th e shape of th e up pe r re verse
roller shaft [H] has been changed to match the elect rical clut ch. The old spring clutch [B] can be replaced with the new electrical
clutch [C] (C2158240) with the clutch stopper [G ] (C21 54 200) an d the upper reverse roller (C2154046).

T. Ito, Manager
Copier Technical Support

MODIFICATION BULLETIN NO. 1 PAGE 4 OF 5

[C]

DETAILS OF MODIFICATION

[B]

ISSUED ON: October 15, ’93

[D]

[A]

[G]

[E]

[H]

[F]

MODIFICATION BULLETIN NO. 1 PAGE 5 OF 5

ISSUED ON: October 15, ’93

MODEL NAME

Ges5325 Rex1250

NSA CP325

Ricoh VT2105 120/60 USA, Canada C216-17 C3213040001

Ges5325 Rex1250

NSA CP325
Ricoh VT2105 230/50 Europe C216-27 C3213040031
Ricoh VT2105 230/60 Asia C216-29 C3213040106

V/Hz DESTINATION CODE SERIAL NUMBER

120/60 USA, Canada C216-12 50823040001

230/50 Europe, Asia C216-22 50813040001

MODIFICATION BULLETIN NO. 2 PAGE 1 OF 3

ISSUED ON: October 15, ’93

Model N865 (VT2105, Ges5325, Rex1250, NSA CP325) Volt/Hz

Modified Article Main Board, Image Processing Board

Reason for

Gestetner version: To enable computer link up

Modification

Draw

No.

Old Parts

No.

C2158088 C2078088 Flat Cable - Main Board
C2158002 C2168002 Image Processing Board

C2168123 C2168062 Main Control Board - 230V

C2168113 C2168052 Main Control Board - 115V
C2158057 C2168057 IC - Main Board

New Parts

No.

Description Rank

Q’ty Used

Old → New

1 → 1
1 → 1

1 → 1

1 → 1
1 → 1

Date of

Modification

Inter-

change-

ability

X/X
X/X 25 67

X/X 31 67

X/X 31 67
X/X 32 67

Part needed for replacement by new part

Part No. Description No.Page

O/O as a set
(X/O, if the computer
link up is necessary.)

Serial

Number

Parts

Catalog

19 67

C2169501 Flat Cable - Main Board

Rank: A : Replace with new parts immediately.B : Replace with new parts at time of repair.C : Replace with new parts at time of overhaul.
I Interchangeability:
(1) When old and new parts are not mutually interchangeable, use additional parts or an assembly part as indicated in "Parts needed for
replacement by new part" to install the new part.
(2) The mark to the left of the slash indicates whether the old part can be used in the new machine, and the mark to the right indicates whether
the new part can be used in the old machine. x = Not interchangeable o = Interchangeable

0 → 1

**

MODIFICATION BULLETIN NO. 2 PAGE 2 OF 3

Connected with
the new board

ISSUED ON: October 15, ’93

DETAILS OF MODIFICATION

To enable computer link up, the main cont rol bo ard and the image proce ssing boa rd have be en change d,
including the ROM on the main board (IC - main board). Due to this modification, the numbe r of connector
pins between the main cont rol bo ard and the image processing boa rd ha s bee n incre ase d. This is the
reason why the interchangeability of each board is X/X.
To enable to connect the new bo ard and the old board, the flat cable - main board (C2169501) has been
registered as a service part. A new board can be installe d on the old mach ine with this cable. Also, an old
board can be installed on th e ne w machine with this cable. To enable comp ut er link up , the new main
control board, image processing board, and flat cable must be used as a set.

Connected with
the old board

C2169501

T. Ito, Manager
Copier Technical Support

MODIFICATION BULLETIN NO. 2 PAGE 3 OF 3

ISSUED ON: October 15, ’93

MODEL NAME

Ges5325 Rex1250

NSA CP325

Ricoh VT2105 120/60 USA, Canada C216-17

Ges5325 Rex1250

NSA CP325
Ricoh VT2105 230/50 Europe C216-27 C3213080001
Ricoh VT2105 230/60 Asia C216-29 C3213080036

V/Hz DESTINATION CODE SERIAL NUMBER

120/60 USA, Canada C216-12 50823080001

From September ’93

Production

230/50 Europe, Asia C216-22 50813080001

MODIFICATION BULLETIN NO. 3 PAGE 1 OF 3

ISSUED ON: October 15, ’93

Model N865 (VT2105, Ges5325, Rex1250, NSA CP325) Volt/Hz

Modified Article Main Board, Image Processing Board

Reason for

Parts Standardization

Modification

Draw

No.

Old Parts

No.

C2158088 C2078088 Flat Cable - Main Board
C2158002 C2168002 Image Processing Board
C2168123 C2168062 Main Control Board - 230V
C2168113 C2168052 Main Control Board - 115V
C2158057 C2168057 IC - Main Board

New Parts

No.

Description Rank

Q’ty Used

Old → New

1 → 1
1 → 1
1 → 1
1 → 1

1 → 1

Date of

Modification

Inter-

change-

ability

X/X O/O as a set 19 67
X/X 25 67
X/X 31 67
X/X 31 67
X/X 32 67

Part needed for replacement by new part

Part No. Description No. Page

Serial

Number

Parts

Catalog

Rank: A : Replace with new parts immediately.B : Replace with new parts at time of repair.C : Replace with new parts at time of overhaul.
I Interchangeability:
(1) When old and new parts are not mutually interchangeable, use additional parts or an assembly part as indicated in "Parts needed for
replacement by new part" to install the new part.
(2) The mark to the left of the slash indicates whether the old part can be used in the new machine, and the mark to the right indicates whether
the new part can be used in the old machine. x = Not interchangeable o = Interchangeable

C2169501 Flat Cable Main PCB

0 → 1

**

MODIFICATION BULLETIN NO. 3 PAGE 2 OF 3

Connected with
the new board

ISSUED ON: October 15, ’93

DETAILS OF MODIFICATION

Due to parts standardization, the main contro l b oa rd and the image processing board have been
changed, including the ROM on th e main board (IC - main board). Due to this modifica tio n, the number
of connector pins betwe en the main con trol board and the Image proce ssing boa rd ha s bee n
increased. This is the reason why the interchangea bilit y of ea ch bo ard is X/ X.
To enable to connect th e ne w boa rd an d th e old board, the flat cable - main boa rd (C21 69 50 1) ha s
been registered as a service part. A new board can be inst alle d on the old mach ine with this cable.
Also, an old board can be installed on the new machine with th is cable.

Connected with
the old board

C2169501

T. Ito, Manager
Copier Technical Support

MODIFICATION BULLETIN NO. 3 PAGE 3 OF 3

ISSUED ON: October 15, ’93

MODEL NAME

Ges5325 Rex1250

NSA CP325

Ricoh VT2105 120/60 USA, Canada C216-17

Ges5325 Rex1250

NSA CP325
Ricoh VT2105 230/50 Europe C216-27 C3213080001
Ricoh VT2105 230/60 Asia C216-29 C3213080036

V/Hz DESTINATION CODE SERIAL NUMBER

120/60 USA, Canada C216-12 50823080001

From September ’93

Production

230/50 Europe, Asia C216-22 50813080001

MODIFICATION BULLETIN NO. 4 PAGE 1 OF 2

ISSUED ON: October 31, ’93

Model N865 (VT2105, Ges5325, Rex1250, NSA CP325) Volt/Hz

Modified Article Parts Catalog

Reason for

Parts catalog correction

Modification

Please correct your parts catalog as follows:

Parts Catalog

Incorrect P/N Correct P/N Description Q’ty Used

Index No. Page

C2018453 12040801 Push Switch 1 20 67

Date of

Modification

Serial Number

S. Hamano, Assistant General Manager
Technical Support Department

MODIFICATION BULLETIN NO. 4 PAGE 2 OF 2

ISSUED ON: October 31, ’93

MODEL NAME

Ges5325 Rex1250

NSA CP325

Ricoh VT2105 120/60 USA, Canada C216-17

Ges5325 Rex1250

NSA CP325
Ricoh VT2105 230/50 Europe C216-27
Ricoh VT2105 230/60 Asia C216-29

V/Hz DESTINATION CODE SERIAL NUMBER

120/60 USA, Canada C216-12

230/50 Europe, Asia C216-22