Page 1
MODIFICATION BULLETIN NO. 1     Page 1 of 5  ISSUED ON: August 31, ’92
Model  M50   Volt/Hz
Modified Article  Parts Catalog 
Reason for 
Parts catalog correction
Modification
1.  To standardize parts number with the M1, th e parts nu mbe r of th e following parts have been changed. The 
interchangeability is O/O.
Old P/N  New P/N  Description  Index No.  Page 
A0941231  52141231  Front Cassette Guide  26  19 
A0941232  52141232  Rear Cassette Guide  24  19 
A0946365  52146365  Indicator Panel  17  3 
A0941475  52146577  Front Inner Cover  27  19 
A0941494  52141494  Rear Inner Cover  7  19
Date of
Modification 
Serial Number
A0941712  52141712  Rins Bracket  21  5 
A0941921  52141921  Slider Rack Angle  2  5 
A0942585  52142585  Front Registration Spring  24  7 
A0942586  52142586  Rear Registration Spring  25  7 
A0945161  52145161  Main Board  15  17 
A0942624  52142624  Bottom Plate Spring  6  3 
A0944106  52144106  Hot Roller  22  13
 
 
Page 2
MODIFICATION BULLETIN NO. 1     Page 2 of 5  ISSUED ON: August 31, ’92
Old P/N  New P/N  Description  Index No.  Page 
A0944111  52144111  Pressure Roller  23  13 
A0944123  52144123  Stripper Release Spring  41  13 
A0944179  52144179  Lamp Holder Spring  48  13 
A0944207  52144207  Fusing Cover - 220V/240V  1  13 
A0945100  52145100  Power supply Board Ass’y  8  19 
A0945120  52145120  Interface Board  16  19 
A0945160  52147251  Main Board Ass’y (Ricoh, infotec)  22  17 
A0946659  52146659  Main Board Ass’y (NRG)  22  17 
A0945200  52145200  Power pack - Charge Corona  19  17 
A0945204  52145204  Power pack - Transfer/Bias  10  17 
A0945208  52145208  Fluorescent Lamp Socket  29  5 
A0945211  52145211  Quenching Lamp  40  5 
A0945236  52145236  Paper Exit Sensor  19  13 
A0945300  52145300  Upper Unit Harness - Rear  7  17 
A0946652  52146652  Indicator Board Ass’y  21  17 
A0945301  52145301  Upper Unit Harness - Front  17  17 
A0945305  52145305  Harness - Paper Exit Sensor  52  13 
A0945310  52145310  AC Harness  5  19
 
 
Page 3
MODIFICATION BULLETIN NO. 1     Page 3 of 5  ISSUED ON: August 31, ’92
Old P/N  New P/N  Description  Index No.  Page 
A0945315  52145315  Front Fusing Harness  3  13 
A0945316  52145316  Rear Fusing harness  2  13 
A0945605  52145605  Main Motor - AC 220V 11W  3  15 
A0945650  52145650  Main Motor - AC 240V 11W  3  15 
A0945615  52145615  AC Drive Board Ass’y - 220V/240V  2  15 
A0945620  52145620  Fusing Lamp - 1050W  27  13 
A0945637  52145637  Receptacle - 220V/240V  3  19
2. To change the vende r, th e following parts have been changed. The interchangeability is O/O .
Old P/N  New P/N  Description  Index No.  Page 
52145630  A0945630  Transformer - 220V/240V  11  19 
52145322  A0945322  Bias Harness  9  19 
52142579  A0942579  Registration Spring  19  7
 
 
Page 4
T. Ito, Manager 
Copier Technical Support
MODIFICATION BULLETIN NO. 1     Page 4 of 5  ISSUED ON: August 31, ’92
3. Please correct the parts number as follows. (Ricoh versio n only)
Old P/N  New P/N  Description  Index No.  Page 
52145151  52145161  Main Board  *  21 
52145153  52145162  CPU - Main Board  1  21 
52145399  52145300  Upper Unit Harness  *  29
4. Please correct the index number as follows. (Ricoh versio n only)
Part Number  Description  Page  Wrong Index No.  Correct Index No.
11001329  Contact
5. Please delete the following parts from your parts catalog. (Ricoh version only)
Part Number  Description  Index No.  Page
29  1,2,3,4,5  6 
31  1,2,3  4
14071091  IC - HD74LS02P  5  21 
14000072  Transistor - 2SC372Y  12  21
 
 
Page 5
MODIFICATION BULLETIN NO. 1     Page 5 of 5  ISSUED ON: August 31, ’92
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K  A094 - 62
Nashua 2208  230, 240/50  U.K  A094 - 65
Ricoh M50  230, 240/50  U.K  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 6
     MODIFICATION BULLETIN NO. 2    Page 1 of 2  ISSUED ON: December 31, ’92
Model  M50 (Ricoh version only)  Volt/Hz 
Modified Article  Exterior etc. 
Reason for 
Parts standardization with M1
Modification
Due to standardize the parts with M1, th e following parts have been changed. 
The interchangeability is O/O.
Old P/N  New P/N  Description  Index No.  Page 
A0941121  52147156  Left Cover  8  5 
A0941131  52147157  Right Upper Cover  10  5 
A0941431  52147176  Rear Cover - 220V / 240V  1  3 
A0941381  52147168  Operation Panel Cover  18  3 
A0941751  52147186  Exposure Cover - 220V / 240V  9  5 
A0941991  52147193  Slider Cover  1  5
Date of
Modification 
Serial Number
A0942661  52147197  Cassette Body  5  3 
A0943211  52147206  Development Unit Holder  20  9 
A0944161  52147218  Copy Tray  16  3
T. Ito, Manager 
Copier Technical Support
 
Page 7
     MODIFICATION BULLETIN NO. 2    Page 2 of 2  ISSUED ON: December 31, ’92
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
Infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62
Nashua 2208  230, 240/50  U.K.  A094 - 65
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 8
     MODIFICATION BULLETIN NO. 3    Page 1 of 3  ISSUED ON: December 31, ’92
Model  M50 (Infotec version only)  Volt/Hz 
Modified Article  Exterior etc. 
Reason for 
Parts standardization with M1
Modification
Due to standardize the pa rts with M1 , th e following parts have been changed. The interchangeability is O/ O.
Old P/N  New P/N  Description  Index No.  Page 
A0945605  52145605  Main Motor Ass’y - AC 220V 11W  3  15 
A0942585  52142585  Front Registration Spring  24  7 
A0942586  52142586  Rear Registration Spring  25  7 
A0945310  52145310  AC Harness  5  19 
A0941231  52141231  Front Cassette Guide  26  19 
A0941232  52141232  Rear Cassette Guide  24  19
Date of
Modification 
Serial Number
A0944123  52144123  Stripper Release Spring  41  13 
A0941921  52141921  Slider Rack Angle  2  5 
A0942624  52142624  Bottom Plate Spring  6  3 
A0947968  52147968  Copy Tray (INF)  16  3 
A0946365  52146365  Indicator Panel  17  3 
A0947917  52147917  Front Cover (INF)  25  3 
A0947930  52147930  Platen Cover (INF)  2  3 
A0946652  52146652  Indicator Board Ass’y  21  17
 
Page 9
DETAILS OF MODIFICATION
Old P/N  New P/N  Description  Index No.  Page 
A0947902  52147902  Left Cover (INF)  8  5 
A0947903  52147903  Right Upper Cover (INF)  10  5 
A0947947  52147947  Cassette Body (INF)  5  3 
A0947962  52147962  Exit Cover (INF)  47  13 
A0947965  52147965  Lower Exit Guide (INF)  37  13
     MODIFICATION BULLETIN NO. 3    Page 2 of 3  ISSUED ON: December 31, ’92
T. Ito, Manager 
Copier Technical Support
 
Page 10
     MODIFICATION BULLETIN NO. 3    Page 3 of 3  ISSUED ON: December 31, ’92
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
Infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62
Nashua 2208  230, 240/50  U.K.  A094 - 65
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 11
T. Ito, Manager 
Copier Technical Support
MODIFICATION BULLETIN NO.  4      PAGE 1 OF 2
Model  M50   Volt/Hz
Modified Article  Exterior 
Reason for 
As per Gestetner group’s request
Modification
Date of
Modification 
As per Gestetner group’s request, the color of the exte rior ha s bee n sta nd ard ized and the logos have been changed .
Old P/N  New P/N  Description  Q’ty Used  Interchangeability  Index No.  Page 
A0946563  A0946533  Front Cover (NST)  1 →  1X / O 2 5 3 
A0946532  A0946534  Front Cover (GES)  1 →  1X / O 2 5 3 
A0946564  Operation Panel Cover (NRG)   1 →  0X / 1 83
A0946575  Operation Panel Cover (NST)   0 →  1/ O 1 83 
A0946576  Operation Panel Cover (GES)  0 →  1/ O 1 83
Serial Number
A0946375  Platen Cover (NAS)  1 →  0X /  23 
A0946373  Platen Cover (GES)  1 →  0X /  23
A0946302  Platen Cover (NRG)  0 →  1/ X  23
 
Page 12
MODIFICATION BULLETIN NO. 4      PAGE 2 OF 2
ISSUED ON: March 15, ’93 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22  From 1st production
Nashua 2208  220, 230/50  Europe etc.  A094 - 25  0012120001
Infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62  From 1st production
Nashua 2208  230, 240/50  U.K.  A094 - 65  From 1st production
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 13
T. Ito, Manager 
Copier Technical Support
MODIFICATION BULLETIN NO.  5      PAGE 1 OF 2
Model  M50   Volt/Hz
Modified Article  Fusing Unit 
Reason for 
To prevent the fusing cover from being deformed
Modification
To prevent the fusing cover from being deformed by heat , a screw ha s bee n cha ng ed .
Old P/N  New P/N  Description  Q’ty  Interchangeability  Index No.  Page
04430060W
54472769  Stepped Screw  1→  23 6 1 3
Hexagon Head Tapping Screw
- M3 X 6
2 →  1
X/O
116  13
36
Date of
Modification 
Serial Number
116
 
Page 14
MODIFICATION BULLETIN NO. 5      PAGE 2 OF 2
ISSUED ON: March 15, ’93 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22  From 1st production
Nashua 2208  220, 230/50  Europe etc.  A094 - 25  0012040001
Infotec 9208  220, 230/50  Europe  A094 - 26  3220920001
Ricoh M50  220, 230/50  Europe etc.  A094 - 27  A3142050001
Gestetner 2508  230, 240/50  U.K.  A094 - 62  From 1st production
Nashua 2208  230, 240/50  U.K.  A094 - 65  From 1st production
Ricoh M50  230, 240/50  U.K.  A094 - 67  A3142070380
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 15
T. Ito, Manager 
Copier Technical Support
Due to vendor change, the following part has been changed.  The Int erchangeability is O/O.
Old P/N  New P/N  Description  Q’ty Used  Index No.  Page
12081004  Power Relay - DC24V  1 →  0  4  25
12081041  Relay - G2R-2-TU - DC24V  0 →  1  4  25
MODIFICATION BULLETIN NO.  6      PAGE 1 OF 2
Model  M50   Volt/Hz
Modified Article  AC drive board 
Reason for 
Vendor change
Modification
Date of
Modification 
Serial Number
 
Page 16
MODIFICATION BULLETIN NO. 6      PAGE 2 OF 2
ISSUED ON: March 15, ’93 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
Infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62
Nashua 2208  230, 240/50  U.K.  A094 - 65
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 17
ISSUED ON: August 15, ’93   
T. Ito, Manager 
Copier Technical Support
MODIFICATION BULLETIN NO.   7    PAGE 1 OF 2
Model  M50   Volt/Hz
Modified Article  Front Cover 
Reason for 
Rex Rotary information
Modification
Date of
Modification 
To change the Gestetner brand machine to the Re x Rota ry b ran d machine, the following pa rts has b een changed. 
NOTE: The destinatio n cod es (-22, -62) have not been chang ed.
Inter-
Old P/N  New P/N  Description  Q’ty Used
A0946534  A0946544  Front Cover (REX)  1 →  1  X/O  25  3
change-
ability
Parts Catalog
Index No.  Page
Serial Number
 
Page 18
MODIFICATION BULLETIN NO.  7    PAGE 2 OF 2
ISSUED ON: August 15, ’93    
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22  0013030001
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
Infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62
Nashua 2208  230, 240/50  U.K.  A094 - 65  From 1st production
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 19
T. Ito, Manager 
Copier Technical Support
MODIFICATION BULLETIN NO.   8    PAGE 1 OF 2
ISSUED ON: September 30, ’93 
Model  M50   Volt/Hz
Modified Article  Power Supply Cord 
Reason for 
Parts Standardization
Modification
Date of
Modification 
To standardize the parts with ot he r mode ls, th e po wer sup ply cord has be en chan ged. The interchangeability is O/O.
Old P/N  New P/N  Description  Index No.  Page
28010037  11500331  Power Supply Cord - 240V  150  19
Serial Number
 
Page 20
MODIFICATION BULLETIN NO.  8    PAGE 2 OF 2
ISSUED ON: September 30, ’93 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
Infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62
Nashua 2208  230, 240/50  U.K.  A094 - 65
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 21
MODIFICATION BULLETIN NO.   9    PAGE 1 OF 2
ISSUED ON: September 30, ’93 
Model  M50   Volt/Hz
Modified Article  Main Board and Paper Exit Sensor 
Reason for 
Modification
1. Vendor change
2. To prevent the paper exit sensor feeler from coming out
Date of
Modification 
1. Due to vendor change, a diode on the main board has been chang ed . The interchangeability is O/O.
Old P/N  New P/N  Description  Q’ty  Index No.  Page
14010631  Diode - 1S2075K
1 →  1
14010611  Diode - 1S1588
72 1
2. To prevent the paper exit sensor fe ele r f rom comin g out, the paper exit sensor has been changed back to the 
 previous sensor.
Inter-
Old P/N  New P/N  Description  Q’ty
change-
ability
Index No.  Page
Serial Number
54145236  A0945236  Paper Exit Sensor
1 →  1
X/O  19  13
T. Ito, Manager 
Copier Technical Support
 
Page 22
MODIFICATION BULLETIN NO.  9    PAGE 2 OF 2
ISSUED ON: September 30, ’93 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22  From 1st production
Nashua 2208  220, 230/50  Europe etc.  A094 - 25  0013010001
Infotec 9208  220, 230/50  Europe  A094 - 26  322023XXXX
Ricoh M50  220, 230/50  Europe etc.  A094 - 27  A3143010001
Gestetner 2508  230, 240/50  U.K.  A094 - 62  From 1st production
Nashua 2208  230, 240/50  U.K.  A094 - 65  From 1st production
Ricoh M50  230, 240/50  U.K.  A094 - 67  A3143012063
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 23
MODIFICATION BULLETIN NO.   10    PAGE 1 OF 2
ISSUED ON: September 30, ’93 
Model  M50 (NRG only)   Volt/Hz
Modified Article  Main Board 
Reason for 
To facilitate assembly
Modification
Date of
Modification 
To facilitate assembly, the main bo ard for NRG ha s been cha ng ed.
Inter-
Old P/N  New P/N  Description  Q’ty
52145161  52145171  Main Board (NRG)
1 →  1
change-
ability
O/O
Index No.  Page
15
*
17 
21
Details of modification 
In the multi copy mode, the countin g met hod of the copy nu mbe r f or NRG versio n use d is " Counting Down". It is 
performed by cutting the jumper wire (JP1 03) on the main board.  Before mod ifica tio n, the same main board was 
used on all models but for the NRG version, the main board was modified for the above procedure at th e fa ctory. 
So, to facilitate assembly, we have made a new part number fo r the main bo ard that has the cut jumper wire.
Serial Number
T. Ito, Manager 
Copier Technical Support
 
Page 24
MODIFICATION BULLETIN NO.  10    PAGE 2 OF 2
ISSUED ON: September 30, ’93 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22  From 1st production
Nashua 2208  220, 230/50  Europe etc.  A094 - 25  0013010001
Infotec 9208  220, 230/50  Europe  A094 - 26
Ricoh M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62  From 1st production
Nashua 2208  230, 240/50  U.K.  A094 - 65  From 1st production
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 25
MODIFICATION BULLETIN NO.   11    PAGE 1 OF 2
ISSUED ON: March 31, ’94 
Model  M50 (Gestetner only)  Volt/Hz 
Modified Article  Front cover, etc. 
Reason for 
Gestetner’s request
Modification
At Gestetner’s request, th e log o of Rex-Rotary has been removed from the front cover. 
Instead of this, the na me pla tes for Gestetner and Rex-Ro ta ry lo go s have bee n ad ded as an accessory.
Old P/N  Incorrect Description  Q’ty
A0946544  Front Cover (REX)
A0946562  Front Cover 
A0946518  Name Plate (Gestetner 2508) 
A0946519  Name Plate (Rex Rotary 8508)
1 →  0 
0 →  1 
0 →  1 
0 →  1
Inter-
change-
ability
X/  25  3 
/X  25  3
  X/O as a set  *27  3
Parts Catalog
Index No.  Page
*27  3
* New Index
Date of
Modification 
Serial Number
S. Hamano, Assistant General Manager 
Technical Support Department
 
Page 26
MODIFICATION BULLETIN NO.  11     PAGE 2 OF 2
ISSUED ON: March 31, ’94 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22  0013120001
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
Infotec 9208  220, 230/50  Europe  A094 - 26
Rioch M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62  From 1st production
Nashua 2208  230, 240/50  U.K.  A094 - 65
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER
 
Page 27
MODIFICATION BULLETIN NO.  12    PAGE 1 OF 2
ISSUED ON: April 30, ’94 
Model  M50   Volt/Hz
Modified Article  Friction Pad 
Reason for 
Due to vendor change
Modification
Due to vendor change, the frictio n pad has been cha ng ed .
Inter-
Old P/N  New P/N  Description  Q’ty Used
52142627  A0942515  Friction Pad
2 →  2
change-
ability
O/O  13  3
Date of
Modification 
Parts Catalog
Index No.  Page
Serial Number
S. Hamano, Assistant General Manager 
Technical Support Department
 
Page 28
MODIFICATION BULLETIN NO.  12     PAGE 2 OF 2
ISSUED ON: April 30, ’94 
MODEL NAME
Gestetner 2508  220, 230/50  Europe etc.  A094 - 22
Nashua 2208  220, 230/50  Europe etc.  A094 - 25
Infotec 9208  220, 230/50  Europe  A094 - 26
Rioch M50  220, 230/50  Europe etc.  A094 - 27
Gestetner 2508  230, 240/50  U.K.  A094 - 62
Nashua 2208  230, 240/50  U.K.  A094 - 65
Ricoh M50  230, 240/50  U.K.  A094 - 67
V/Hz  DESTINATION  CODE  SERIAL NUMBER