Ricoh GENERAL Technical Bulletin GEN
Page 1
Technical Bulletin
No.GENERAL-001
Issued on
July 22, 1991
Subject:
Quick Reference Guide
Model( s): Fax 1200L/2800L
Fax90
Fax77/80/85
Classification
Action Required
Troubleshooting
Retrofit Information
Revision of Service Manual
Information Only
Others
Quick Reference Guid e is deleted in following models in order to re duce the cost.
And Quick Reference Guide Holder of Fax 1200L/2800L is also deleted.
FAX T.S. Se ction T.S. Departme nt
Manager
H. Motojima
Control No. for Each Area
R.C. 001 Asia -SAVIN -- LAM -Europe 001 AT&T -HCS --
[RC]
Model Code P/N of Q/ G P/N of Q/ G H older Execution Date
[Europe]
Model Code P/N of Q/ G P/N of Q/ G H older Execution Date
H004-20
H048-20
H049-20
H051-20
H053-20
H053-21
H055-20
H055-21
H059-20
H004-40
H004-46
H048-44
H051-42
H051-44
H051-45
H051-91
H053-40
H053-70
H053-44
H053-74
H055-40
H055-70
H055-44
H055-74
H0044611
H0484830
H0494830
H0514348
H0534304
↓
H0554338
↓
H0594301
H0044670
↓
H0484838
H0514316
H0514317
H0514318
H0514343
H0534315
↓
H0534322
↓
H0554343
↓
H0554344
↓
H0044319 R0410500475
H0044139
↓ U1010500018
~
~
Execution date of above material change except H004-20/46 depends on the date when
the stock of Q/G runs out. We will inform you when it is fixed.
Page 1
Technical Bulletin
No.GENERAL-002
Subject:
Issued on
June 12, 1992
22 pin - Connector interchangeability
M ode l(s):
M odel L Series
M odel C Series
FAX 82
Classification
Action Required
Troubleshooting
Retrof it Information
Revision of Service Manual
Inform a tio n Only
Others
The following problem will occur with the 22 pin-connector which has been used between the
FCU and NCU in some models.
FAX T.S. Section, T.S. Department
Assistant General Manager
H. Motojima
[Cause]
To pr e ve nt the pin fr om bend ing and to improve reliability, the vender has mod ifie d the style of
the connector (both holder and header) without a part number change.
Ho wever, th ere is no interchangeabilit y between the n ew one and the old one.
[Symptom]
If the old holder is connected with the new header on the FCU and NCU, the contact between
them will be incomplete.
Interchangeability of each type is shown below. (See figure A)
Old Holder New Holder
Old
Header
New
Header
OO
XO
After the January.
1991 pr oduction
After the April.
1991 pr oduction
[ Solution]
If the holder is an old one and the header is a new one, the edge of the holder must be cut off
when the NCU and/or FCU are replaced in the field. (See figure B)
New Holder
←
Page 2
Technical Bulletin
No.GENERAL-002
Issued on
June 12, 1992
Subject:
22 pin - Connector interchangeability
[Applicable Models]
Model L Series
Model C Series
FAX 8 2
When you replace the FCU and/or the NCU in the above models, check the style of the follow-
ing points in advan ce.
a) Edge of the header on the FCU/NCU.
b) Edge of the holder at both sides of FCU-NCU harness.
Old Header
Old Holder
←
←
[Figure A]
←
New Header
Cut off
$
$
Old Holder
[Figure B]
2
Page 1/1
Technical Bulletin No. GENERAL-003
SUBJECT: Notice for FCE ROM reinstallation.
PREPARED BY: H.Someya
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
FROM: 2nd T.S. Section
MODEL: IXO
ZB
PF-2
Retrofit Information Other
Reinstall the ROM on the FCE according to th e followin g pro ceduce.
1. Put the ROM in the FCE mount.
Note: The ROM must be slightly loose in the mount.
2. Put the frame on the mount.
DATE:Oct. 25th 1993
Note: The frame must be slightly loo se on the moun t.
3. There are two ways to set the frame.
1) Hold down both sides of the frame with bo th thu mbs.
Note: Do not push down on the ROM.
2) Put the tool (P/N: N/A) on the frame.
Hold down both sides of the too l wit h bo th thu mbs.
4. Push down each corner to ensure secure setting
of the frame.
5. Check that each hook is locked comp let ely.
1
3
4
same spaces
Page 1/2
Technical Bulletin No. GENERAL-004
SUBJECT: Black bands/lines on the received cop y
PREPARED BY: H.Yokoyama
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
FROM: 2nd T.S. Section
MODEL: USA only
CSO, CFO, CS1/CRO
DATE:
November 11th, 1993
[Problem]
On the received copies, bla ck ban ds or line s may
be printed, especially on the right hand side.
[Cause]
Toner or dust is attached to the charge corona wire.
[Modification]
The electric current of the charge coron a will be
increased to avoid applying uneren charg to the
master which is caused by a dirty corona wire.
Because of the increase of the ele ctric curre nt , th e
distance betwee n th e grid plate and the coro na
wire will be changed to keep the charge on the
master belt the same as before modification.
• H081 2870 → H081 2854 Eraser Ass’y
• H081 5030 → H081 5020 Power pack (CSO/CFO)
H510 5030 → H510 5020 Power pack (CRO/CS 1)
<Eraser Ass’y>
• The thickness of the cleaning blad e of the cleaner will be changed to incre ase the
cleaning ability (4mm → 5mm)
• The distance between the gride plate and charg e wire will be cha nged (6mm → 8mm)
<Power pack>
• The range and initial value of the VRC (VR for the charg e coro na ) will be change d.
The above modification will ta ke pla ce fro m t he De cemb er 1st prod uction.
Page 2/2
Technical Bulletin No. GENERAL-004
SUBJECT: Black bands/lines on the received cop y
DATE:
November 11th, 1993
[Countermeasure in the field]
The countermeasu re method depends on the CV (Cop y Volu me) of the machine.
• If the CV is less than 400 sheets/month
Turn VRC on the power pack to the maximum (Turn the VR clockwise until it stops)
• If the CV is more than 400 sheet s/mo nth
Change the Eraser to the modified one and turn VRC on the power pack to the maximum.
Note:The increase in the powe r of VRC may de crease the life time of the master unit, so for
customers whose ACV/month is more than 400 sheets, the Erase r shou ld be chan ge d.
[Request]
The essence of this problem is a dirty cha rge corona wire, so please do the follo wing
• When a sales or service person visits a customer (at PM or EM), clea n the charge
corona wire with the built-in cleaner
• Advise the customer to clean th e charge corona wire at a certain interval or if the
customer sees black bands/lines on the receive d copy.
Page 1/2
Technical Bulletin No. GENERAL-005
SUBJECT: Black bands/lines on the received cop y
PREPARED BY: H.Yokoyama
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
FROM: 2nd T.S. Section
MODEL: Europe, Asia
CSO, CFO, CRO
DATE:
Feb. 3rd, 1994
[Problem]
On the received copies, bla ck ban ds or line s may
be printed, especially on the right hand side.
[Cause]
Toner or dust is attached to the charge corona wire.
[Modification]
The electric current of the charge coron a will be
increased to avoid applying uneren charg to the
master which is caused by a dirty corona wire.
Because of the increase of the ele ctric curre nt , th e
distance betwee n th e grid plate and the coro na
wire will be changed to keep the charge on the
master belt the same as before modification.
• H081 2870 → H081 2854 Eraser Ass’y
• H081 5030 → H081 5020 Power pack (CSO/CFO)
H510 5050 → H510 5051 Power pack (CRO)
<Eraser Ass’y>
• The thickness of the cleaning blad e of the cleaner will be changed to incre ase the
cleaning ability (4mm → 5mm)
• The distance between the gride plate and charg e wire will be cha nged (6mm → 8mm)
<Power pack>
• The range and initial value of the VRC (VR for the charg e coro na ) will be change d.
The above modification will take pla ce fro m t he Feb. 1st pro du ctio n.
Page 2/2
Technical Bulletin No. GENERAL-005
SUBJECT: Black bands/lines on the received cop y
DATE:
Feb. 3rd, 1994
[Countermeasure in the field]
The countermeasu re method depends on the CV (Cop y Volu me) of the machine.
• If the CV is less than 400 sheets/month
Turn VRC on the power pack to the maximum (Turn the VR clockwise until it stops)
• If the CV is more than 400 sheet s/mo nth
Change the Eraser to the modified one and turn VRC on the power pack to the maximum.
Note:The increase in the powe r of VRC may de crease the life time of the master unit, so for
customers whose ACV/month is more than 400 sheets, the Erase r shou ld be chan ge d.
[Request]
The essence of this problem is a dirty cha rge corona wire, so please do the follo wing
• When a sales or service person visits a customer (at PM or EM), clea n the charge
corona wire with the built-in cleaner
• Advise the customer to clean th e charge corona wire at a certain interval or if the
customer sees black bands/lines on the receive d copy.
Magnet
Page 1/1
Technical Bulletin No. GENERAL-006
SUBJECT: CTM modification
DATE:
April, 11th, 1994
PREPARED BY: H.Yokoyama
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
FROM: 2nd T.S. Section
MODEL:
CSO, CFO, CS1
Troubleshooting Information only
Retrofit Information Other
To avoid toner from being spilt inside the machin e, the toner collection roller of th e CTM will be
modified.
<Figure>
Previous
Type A Type B
Brush 4 Magnets Magnet surface
After modification
Magnet
Black lot no. is printed on the
carton box.
<Expected arrival period>
Previous Type
Type A
Type B
’94.1
Red lot no. will be printed on
the carton box.
’94.6
’94.8
’94.6
Blank lot no. will be printed
on the carton box.
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