2. The end of the RX image (af te r B 5 len gt h) may be blurred.
3. The parts (left side) of the RX image may be rep eate d o n the righ t.
Technical Bulletin
No.CSO-001
FA X T.S. Section T.S. Department
Assistant General Manager
H. Motojima
Control No. f or Each Area
R.C.--Asia001
SAVIN--LAM--
Europe--A T&T--
HCS--
• Conditions
1. The specified cassette sele ction is on.
2. More than 2 pages are received.
3. The PFU is installed.
4. Memory RX (substitute reception, night timer, etc).
Under all of the above conditio ns, the prob lem may occu r.
2. Cause.
Software mistake.
3. Countermeasure
When installing the PFU (Paper Fee d Unit ) re pla ce the ROM on the machine.
(The ROMs will be provided from Ricoh Tokyo (FTSG). )
After replace the ROMs, che ck the ma chin e, in accord an ce with the att ach ed check she et ,
and return the sheets to Ricoh Tokyo (Attn. Mr Motojima) by air mail once a mont h.
4. Serial No.
December (1991) product ion only
A06112XXXXX
Page 2
Issued on
January 27th,1992
Technical Bulletin
No. CSO-002
Subject:
Model(s):
Classification
[Problem]
The document may not fee d at all if the customer place s 50 sheets in the ADF.
Document non-feed
FA X T.S. Section T.S. Department
Assistant General Manager
H. Motojima
Control No. f or Each Area
R.C.0 01Asia--
SAVIN001LAM001
Europe001A T&T--
HCS001
[Cause]
1. Static electricity. (In low humidity environment)
2. Some types of pap er, such as rough or thick types.
[Action]
Normally documents should be set with the edges even, because the CS O ha s a shut ter .
However, if the customer faces this problem, instruct the customer to do the following.
1. Shuff le the stack
2. Place the document in the fee de r a s follo ws
0~10mm
Inserting Direction
Page 3
Issued on
February 15, 1992
Technical Bulletin
No. CSO-003
Subject:
Model(s): AFO/AF2/CSO
Classificati on
Action Required
Troubleshooting
Retrof it Information
Revision of Service Manual
Inform a tion Only
Others
[Problem]
1. When a telephone call is incoming, the contact of the NCU OH relay may melt after quite a
few repetition of incoming calls. then no fax reception becomes available. (AFO/AF2/CSO)
AFO/AF2/CSO Software problem
FAX T.S. Section T.S. Depa rtmen t
Assistant General Manager
H. Motojima
Control No. for Each Area
R.C.--Asia002
SA V IN--LAM002
Europe002AT&T-HCS002
2. The first printing page for a reception, a substitute file output, a report or a pattern output
may be blank. (AFO/AF2)
[Cause]
1. By a software fault, the DC loop over the OH relay is closed during an incoming call to result
in putting the ringing voltage (energy) through the DC loop.
The current faulty program allows the rin gin g off signal be enabled during a r inging sequence, so the OH relay is to be switched on.
Possible occurrence rate is ;
1/1800 ∼ 1/8300 at incoming calls.
(For more details, refer to page 3.)
2. By a software fault, the command for 24V power supplying to the thermal head may be
turned off instantly.
However, the printing sequence continues to result in a blank page outputted.
This is caused by the faulty priority assignment of the signals of 24V power on, of status
check and of RXSTART trigger.
It may occur at random as 36 µs/160 ms ≅ 1/4400.
Page 4
Issued on
February 15, 1992
Technical Bulletin
No. CSO-003
Subject:
[Countermeasure]
1. The program is corrected.
So, exchange the ROM on the MBU to the new one.
2. The program is corrected.
So, exchange the ROM on the MBU to the new one.
Part numbers
AFO/AF2/CSO Software problem
VersionOldNew ROM
Ricoh Europe/NRGH0847140CH0847140D
AFO
AF2
CSO
HCSH0847143CH0847143D
Language kitH0847150AH0847150B
AsiaH0847141CH0847141D
Ricoh Europe/NRGH0867140CH0867140D
HCSH0867143CH0867143D
Language kitH0867150BH0867150C
AsiaH0867141CH0867141D
Ricoh Europe/NRGH0817130GH0817130H
HCSH0817131GH0817131H
Language kitH0817159DH0817159E
AsiaH0817132GH0817132H
[Affected machines]
The machines produced in Nov and Dec ’91 and in Jan ’92.
Note:Some of the above machines have been modified in Japa n before shipment.
Page 5
Subject:
Issued on
February 15, 1992
1. Faulty program
Ringing on/off flag
Ringing detection
Ringing detecting
prohibition flag
Technical Bulletin
No. CSO-003
AFO/AF2/CSO Software problem
Ringing
OH relay
2. Corrected prog ram
Ringing
Ringing on/off flag
Ringing detection
Ringing detecting
prohibition flag
OH relay
Page 6
Issued on
February 19th, 1992
Technical Bulletin
No. CSO-004
Subject:
Model(s): AFO/AF2
Classification
When installing the above mod els in Holla nd /I ta ly/B elg ium, change the NCU parpameter to
meet the PTT require men t as fo llows.
NCU parameter setting for Hol land
CSO
FA X T.S. Section T.S. Department
Assistant General Manager
H. Motojima
Control No. f or Each Area
R.C.--Asia--
SAVIN--LAM--
Europe003A T&T--
HCS003
1. Change the country codes for NCU parameter and bitswitch.
2. Change the following parameters and RAM addresse s as follo ws.
The above correction will be applied in to the soft ware from the 1st productions of March ’92.
Page 7
Issued on
March 3rd, 1992
Technical Bulletin
No. CSO-005
Subject:
Model(s): CSO
Classification
If the customer require A5 size pa pe r in t he pape r feed unit, adjust the spring pressure as
follows in order to prevent do uble feeding.
Optional paper feed unit adjustment
FA X T.S. Section T.S. Department
Assistant General Manager
H. Motojima
Control No. f or Each Area
R.C.--Asia--
SAVIN--LAM--
Europe004A T&T--
HCS004
1. Remove the right cover.
2. Adjust the spring pressu re by th e ad justment bracket as shown belo w. (by loosening 2
screws)
3. Put the cover back.
Page 8
Duct
Remaining Toner
Issued on
March 5th, 1992.
Technical Bulletin
No. CSO-006
Subject:
Model(s): CSO
Classificati on
Action Required
Troubleshooting
Retrof it Information
Revision of Service Manual
Inform a tion Only
Others
Once the machine is installed (with the Toner Cassette installed in the machine), the toner will
be transferred to the developing unit. As a result, when the Toner Cassette is removed from the
machin e, some residual toner may s pill out from the de veloping unit when the ma chine is
moved.
Duct cover for the development unit
FAX T.S. Section T.S. Depa rtmen t
Assistant General Manager
H. Motojima
Control No. for Each Area
R.C.002Asia003
SA V IN002LAM003
Europe005AT&T---
HCS005
If it is necessary to transport the machine after installation, please do the following:
1. Switch off the power, and r emove the toner cassette.
2. Remove the remaining toner at the duct entrance by
tapping the duct.
3. Close the front cover without putting back the toner
cassette.
4. Using the test mode, rotate the toner supplier as follows.
(1) Enter test mode: Function 5 1 9 9 1
(2) 9 7 Yes
(3) 8
(4) After the noise from the toner supply mechanism stops, press Stop
5. Push the duct cover (H0812487) into the development un it with a screwdriver.
Longer
Duct
H0812487
H0812487
6. Switch off the power.
7. Move the machine.
Shorter
15mm
Page 9
Issued on
March 16 , 1992
Technical Bulletin
No. CSO-007
Subject:
Model(s): CSO
Classification
When the power is kept on, the PCB-PFU will be bro ken aft er connecting/disconnecting the
connectors during instalation/checking th e lower paper feed unit.
Lower paper feed unit
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
Control No. f or Each Area
R.C.003Europe006
SAVIN003HCS006
NRG-
USA
--NRG--
Asia/LAM004
Therefore, before connecting/disconnecting the paper fee d un it, plea se make sure that the
power is switched off.
Page 10
Issued on
March 18th, 1992
Technical Bulletin
No. CSO-008
Subject:
Model(s): AFO/AF2/CSO
Classification
-Problem-
If the T1 timer is set with a value of over 100 for a speed dial code by d ed icated Tx parameter
programming, the other parame te r for th e spe ed dial cod es will not be programmed.
Dedicated Tx parameter programming problem
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
Control No. f or Each Area
R.C.004Europe007
SAVIN004HCS007
NRG-
USA
001NRG001
Asia/LAM005
-Cause-
Software bug.
-Countermeasure-
Temporary-Set the T1 timer with a value less than 100 for spe ed dia l codes.
Permanent - We will correct the software from the May mass pro duction.
Page 11
Page
418E=12H
1
Technical Bulletin
KMxml
Subject:
Model(s): AFO/AF2
Classification
Action Required
u-
Troubleshooting
❑
Retrofit Information
❑
Revision of Service Manual
Information Only
El
❑
Others
When installing the above models in Sweden, change the
PTT/sales
the
NCU
Cso
requirements as follows.
No.cso-009
parameter setting
for
FAX
Assistant General Manager
H.
Control No. for Each Area
Sweden
T.S.
Section
McWinTJii-nTJ>z~
R.C.--
SAVIN
NRG-USA
Issued on
March 19th, 1992
T.S.
Department
j
,
)
(Y
Europe
--
--
NCU
parameter in accordance with
HCS
NRG
Asia/LAM
008
008
002
--
1. Change the country codes for NCU parameter and bitswitches.
2. Change the and RAM addresses and bit switch as follows.
(1) Replace the developmen t unit.
(1) Replace the OPC.
Page 22
Subject:
Issued on
April 30th, 1992
No. 8
Problem
Dirty background.
Image sample
Technical Bulletin
No.CSO-012
Troubleshooting
Characteristics of t he problem
Blurred horizontal stripes on the backg round.
Cause
• OPCOver charged OP C Icorrect setting of OPC voltag e. (1)
Incorrect setting of OPC. (2)
Under charged OPCIncorrect setting of OPC voltage. (3)
Incorrect setting of OP C. (4)
Defective OPC (5)
•Defective development unit (6)
Action
(1), (3) Replace the power pack.
(2), (4) Check the OPC insta llat ion or replace the OPC
(5) Replace the OPC.
(6) Replace the developmen t unit.
Page 23
Subject:
Issued on
April 30th, 1992
No. 9
Problem
White dots.
Image sample
Technical Bulletin
No.CSO-012
Troubleshooting
Characteristics of t he problem
The dots appear at intervals of 14mm or 188 mm.
Cause
14mm → Defective development unit.
188mm → Defective OPC
Action
(1) Replace the developmen t unit.
(2) Replace the OPC.
Page 24
Subject:
Issued on
April 30th, 1992
Troubleshooting
No. 10
Problem
Black Band (sub scan)
Image sample
Technical Bulletin
No.CSO-012
Characteristics of t he problem
Wide Black band
It may not be straight; it may be oblique, curved or broken.
Cause
Something such as toner ha s att ached itself to the charge co ron a wire.
Action
Clean the charge corona wire.
Page 25
Subject:
Issued on
April 30th, 1992
Troubleshooting
No. 11
Problem
Black line (sub scan)
Image sample
Technical Bulletin
No.CSO-012
Characteristics of t he problem
Pale, thin, straight line s.
Cause
Incorrect cleaning, caused by cracks on the edge of the cleaning blade(CTM).
Action
Check the CTM installation, or replace the CTM.
Page 26
OPC
Blade
CTM
Toner
188mm
160mm
48mm
Printing start position
Subject:
Issued on
April 30th, 1992
Troubleshooting
No. 12
Problem
Black lines (Main scan)
Image sample
Technical Bulletin
No.CSO-012
Characteristics of t he problem
The lines appear as follows
Cause
•Dirt on the reverse side of the cleaning blade (CTM) or incorrect size of CTM or blade
Action
•Clean the reverse side of the cleaning blade .
•Replace the CTM
Page 27
Issued on
May 12th, 1992
Technical Bulletin
No.CSO - 013
Subject:
Model(s): AFO / AF2 / CSO
Classification
[Problem]
The above models may not transmit to the following models.
(Error code 0 - 21 / 0 - 23)
The document may stop during scanning, then th e mach ine will reset after 1 ∼ 2 min, and the
power failure report will be printed.
During transmission, th e stop key does not function.
Condition : I / O rate 40ms (standard), 20ms (Detail)
Models : UF32H • UF23 (Matsushita)
Communication Problem
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
[Cause]
A sof tware error
On the Tx side, the fill bit will be added if the 1 line data is less than the min Tx time for 1 line,
however on the above AFO / AF2 / CSO, the counting may be inco rrect .
[Countermeature]
Temporary : Using the dedicated Tx paramete r, select 4800bps of the initial modem rate.
Permanent : The 1st production of March ’92 will con ta in t he correct software.
Page 28
Issued on
May 12th, 1992
Technical Bulletin
No. CSO - 014
Subject:
Model(s): AFO / AF2 / CSO
Classification
[Problem]
The avove models can not re ceive using ECM from the machines which use 64 fra mes, such as
Canofax 470.
Communication Problem
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
[Cause]
A sof tware error
The frame size (256 / 64 frame) can no t be chan ge d in the software.
[Countermeature]
Temporary
If you face this problem, switch off the ECM function.
(Bit sw 07, bit 5 0 → 1)
In the field, most of facsimile machines use 256 frame, so, this proble m may occur rarely.
Permanent
The 1st production of May ’92 will con ta in the corre ct software.
Page 29
Handle
Subject:
Issued on
May 25th, 1992
Model(s): CSO
Classification
[Problem]
Technical Bulletin
No.CSO-015
Difficult to remove the upper cassette
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
It is difficult to remove the upper cassette fro m the machine when adding the pa pe r.
[Cause]
Friction between the Cassette Retaining Shaft and Cassette Guide Rail.
[Countermeasure]
Lubricate both sides of the Cassette Retaing Shaft .
(Refer to the diagram b elo w).
Use P/N 52 039501 Grease 501
This modification was completed from March, 1992.
Direction of Insertion
+
-
+
Cassette
Retaining Shaf t
Lubrecate Here
Roller
Lubricate Here
[ Viewed from the bottom of the cassette]
Page 30
Issued on
May 15th, 1992
Technical Bulletin
No. CSO - 016
Subject:
Model(s): CSO
Classification
[Problem]
The CSO may not receive from th e following models, with 9600 bps / 72 00 bps.
(1) SANFAX 1 / 515
(2) PC FAX (Mac, PC98, IBM 400)
(3) Pana FAX UF 1000
Communication Trouble
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
[Cause]
The signalling rates in the ab ove ma chin es (1) (2) an d (3) are out of CCITT recommendation,
therefore, the CSO can not receive V29 signal corre ctly.
Capture Rang e of CSO : 9600 bps ± 0.01% (100ppm)
CCITT recommendatio n : 96 00 bps ± 0.01%
[Countermeasure]
Temporary - At present, these is no way of solving this problem from the Ricoh side.
Please ask the possibility of solving this pro ble m (su ch as exch an gin g
modem) from the Tx side.
Permanent - We are correcting the capture range of the CSO as follows.
9600 bps +230 ppm - 300 ppm (temporary range)
From the result of the test, fin ally we will fix it and apply to th e machine.
Page 31
Issued on
May 22nd, 1992
Technical Bulletin
No. CSO - 017
Subject:
Model(s): AFO / AF2 / CSO (Europe)
Classification
[Problem]
When installing the above mode ls in De nma rk, S witzerland and Austria, change the f ollo wing
addresses in accordance with the PTT requierments it the mach ine Serial Number is prior to the
following excution date.
1. Change the country codes for NCU parameter and bit switch.
2. Change the RAM addresses as follows.
NCU parameter setting for Denma rk, Switz erland and Aus tr ia
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
Bit SW 01:→03H
Bit SW 02:→40H
Bit SW 03:→4AH
Bit SW 05:→27H
Bit SW 07:→46H
Bit SW 0B:→06H
Depending on the sales req uire ment, change
the followings.
User SW
User Bit SW 01:→41H
User Bit SW 02:→0BH
User Bit SW 03:→F5H
User Bit SW 06:→0BH
AFO/AF2
Bit SW
Bit SW 01:→07H
Bit SW 02:→58H
Bit SW 03:→4AH
Bit SW 05:→27H
Bit SW 07:→06H
Bit SW 0B:→06H
Depending on the sales req uire ment, change
the followings.
User SW
User SW 03:→F5H
After correcting the sof tware, we will apply to the machine(except user SW).
Page 33
Issued on
June 1st, 1992
Technical Bulletin
No. CSO - 018
Subject:
Model(s): CSO
Classification
[Problem]
The toner guide gear may break because of stress caused by too mu ch to ne r in the
development unit, into which toner is being supplied cont inu ou sly.
As a result white lines will appear on the cop y.
Toner Guide Gear (H0812437) breakage
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
[Cause]
• The toner end detection lever be nds easily when it suffers from some ext ern al sho ck, be -
cause the material is not th ick eno ug h.
• The position of the toner end sensor or the toner detection lever mylar is in corre ct.
• If the lever is bent, or the positio n of the sensor or the mylar is incorrect, to ne r is supplie d
continuously and fills up over the maximum level, beca use the toner en d dete cto r doe s not
work properly.
• Ultimately, the toner trough is not retu rne d to its initial position, and the toner guide gear
breaks, because it expe rien ces too much stress during toner sup ply.
[Action]
• We have modified the fo llowin g part s f rom April production.
Regarding the serial no., refe r t o the atta ched list.
Lever : T oner End Detector → H0812422D
Spring : Lever → H0812462D
Shutter : Toner End Detector → Deleted
• If you face the above problem in the field, please throw some toner away, and replace the
toner guide gear (H0812473) with the abo ve parts (H0812422 and H0812462).
Also, please make sure tha t th e other parts of the develo pme nt unit such as the agitator or
gears, are not damaged.
Page 34
Issued on
June 1st, 1992
Technical Bulletin
No. CSO - 018
Subject:
[Probability]
Around 0.2% .... . acco rding to the Japanese domest ic ma rket dat a
Toner leakage inside unit or on the copy durin g no rmal op era tion.
Toner Leakage
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
[Cause]
The adhesion of th e bru sh on to the toner retainer blade in the cleaning part of the toner
cassette became poor, opening a small gap(s).
Then, the cleane d off toner leaked out through the above poor adhesion gap.
Cause of the poor adhesion
a. Application of stress to mount the brush with double sided adhesive tape was not even.
b. The area where the adhesive tap e was applie d was n ot well cleaned.
[Action]
We conclude that this problem would occur rarely, this means that only few toner cassettes may
have the possibility of this proble m a t very low rat e.
So, if you face this prob lem in the field, you can solve by rep lacin g the toner cassette with other
cassette.
Also, we have improved th e production procedure of on e to ne r cassette in our factory, in order
to increase the reliability.
Page 36
White tape
Subject:
Issued on
June 8th, 1992
Model(s): CSO
Classification
[Problem]
Technical Bulletin
No.CSO-020
Caution when installing the OPC(Mas ter Unit)
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
Black dots or lines on the printed image at 88mm intervals.
[Cause]
Defective OPC.
(The OPC might fall down during installation, rese tt ing or replacement of th e OP C.)
[Reason]
The OPC may drop if the tech nician removes the two white tap es on the OPC ho lder before
installation.
[Action]
Remove the two white tapes on the OPC holder afte r ins t al li ng the OPC in the ma chi ne.
Page 37
Issued on
June 23rd, 1992
Technical Bulletin
No.CSO-021
Subject:
Model(s): CSO
Classification
Action Required
Trou bleshooting
Retrofit Information
Revision of Service Manual
Information Only
Others
[Problem]
When printing, you may h ear noise from around the bushing fo r the pap er feed roller.
Noise when printing
FA X T.S. Sectio n, T.S. Department
Assistant General Manager
H. Motojima
Some customers may complain about this no ise if th e mach ine is used in a quiet place.
However, this noise level is within our specificat ion s.
[Countermeasure]
We have already add ed the sp ring plat e (H0813410) to the machine in order to decrease the
noise.
So, if you receive a complain t ab ou t a mach ine which has not received the mod ification,
concerning the ab ove noise, please add the sp ring plate, as shown on the ne xt pa ge .
Regarding the serial n os, plea se refer to the next page.
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
FROM: FAX T.S. Section
MODEL: CSO, AFO, AF2
DATE: August 21st, 1992
Reissued: Sept 29, 1992
[Problem]
The CSO/AFO/AF2 may not receive at 9600bp s/7200bps from the certain machines, with the
following phenomenon.
•Error code: 0-21, 23
•Only the 1st few inches (cm) of the imag e data would be received and then the line would
be disconnected, or the error would occur as the usual Line fail.
[Cause]
On the CCITT recommendation, the signalling r a te o f the TX terminal is defined to be 9600bps
± 0.01% (100ppm), and all makers design the facsimile models in accordance with the CCITT
recommendation. However, on the some of the models (Tx side) , the signallin g rate may be out of
CCITT recommendation, due to the possible production variation of modem, or other factors.
The capture range (Rx capability) of t he CSO/AFO/AF2 is designed as 9600bps ± 100ppm(there is
no margin). Therefor e, if the signalling rate of Tx terminal is out of CCITT recom mendation, the
CSO/AFO/AF2 can not receive the V29 signal correctly. It means that, if a modem is produced
precisely, there will not be the prob lem.
Tx side: Signalling rate of CCITT recommendation - 9600bps ± 100ppm
Rx side: Capture range of CCITT recommendation - none
[Countermeasure]
Permanent: We have re-designed the modem, to have cert ain margin fo r reception and the new
modem will be ap plied from Oct. produ ctions of ’92 except the fo llowing.
CSO (Productions at RIF factory) → From November, 1992
AFO/AF2 (Productions at RIF factory) → From December, 1992.
The P/Ns of the FCUs will be changed as follows.
Old New
H08160xx→H08161xx ( The last two digits will not be changed)
H08460xx→H084603x
H08660xx→H086603x
(The last digit will not be changed)
Page 40
Technical BulletinNo. CSO-022
Page 2/3
SUBJECT: Modem Capture Range Problem
DATE: August 21st, 1992
Reissued: Sept 29, 1992
[Action in the field]
(1) Make sure the exact causes of the communication problem. By referring to the attached
troubleshooting flow, because there are other communication problems which are caused by
other reasons. If the problem is caused by this modem capture range problem, go to the next
steps.
(2) Drop the starting modem rate of the terminal for Rx or Tx.
(3) Ask the Tx terminal to replace the modem.
(4) If (3) is not possible, replace the FCU with the new FCU which contains the new modem.
[Sample]
Until now, we have been reported on this pro blem with the following models at few rate, and as
the result of our investigation, the signalling rates of the machines are as follows.
ModelsSignalling rate
SANFAX 2100Unknown (The modem has been
rep laced on the tx side)
SANFAX 1-163ppm
SANFAX 515Unknown
Panafax UF1000-120ppm
PC98 FAX (Star FA X)+ 120ppm
PC FAX Mac-180ppm
IBM PC FAXUnknown
Please note that the above table is just the samples of the problem, and the problem should not
always occur with the above models in your field.
The estimated occurrence rate is as low as 0.05%/mo.
However, we like to keep watching the field performance.
We like you to log this case monthly.
Page 41
Technical BulletinNo. CSO-022
Page 3/3
SUBJECT: Modem Capture Range Problem
Phenominom: -Frequent Error Reports (User)
-Frequent Error Co des (Service) 0-20/0-21/ 0-23
START
Error Condition
R x Error(s) occur only in a few
cases and always from the same
Tra ns mitting Terminal
DATE: August 21st, 1992
Reissued: Sept 29, 1992
Error Condition
R x Error(s) occur often from
different Transmitting Terminals.
Change Rx Speed to 7200 bps
OK: E rror(s) caused by bad line
condition.
NG: P roceed with the next step.
Change Rx Speed to 4800 bps
OK: We suspect the AFSP chip
(modem) on the FCU.
Please find out the machine
type at the Tx side.
NG: Proceed with the next step.
Change Rx Speed to previous Speed.
Change Training Error Tolerance
OK: Error(s) cause d by bad
line condition.
NG: Proceed with the next step.
Change Line Error Threshold
OK: Error(s) cause d by bad
line condition.
NG: Proceed with the next step
Change Rx Speed to 4800 bps
OK: Error(s) cause d by bad
line condition.
NG: We suspect the AFE chip on
the FCU. Replace the FCU
with a another FCU
Page 42
Technical BulletinNo. CSO-023
SUBJECT: CSO Swiss Version
PREPARED BY: H.Yokoya ma
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
We inform you that we will make a version of CSO for Switzerland, in which it is not necessary
to change any jumpers at installation.
The details are as follows.
FROM: FAX T.S. Section
MODEL:
DATE:
December 11th, 1992
CSO
-Mass Production-
September, 1992
-Difference-
MBU (P/N: H0816025)
NCU (P/N: H0846020)
Other parts are the s ame as CSO European version.
-Production Code-
H081-46
Page 43
Technical BulletinNo. CSO-024
SUBJECT: Softwa re Problem
PREPARED BY: A. Ishiyama
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
FROM: FAX T.S. Section
MODEL:
CSO for Ricoh and NRG
DATE:
Decem ber, 3rd, 1992
[ Problem]
When receiving, the machine alw ays sends out a CFR (Confirmation to Receive) as a response
to modem training.
As a result, communication fails (reception error) if the telephone line is poor, because the
transmission modem rate never falls back.
(This will not happen with ECM communication)
[Cause]
When some of the software modifications were executed, a bug was introduced.
[Countermeasure]
The program has been corrected.
So, change the ROM or the MBU.
The machines produced in November 1992.
Notes: 1. Most of the abo ve machines have been modified in Japan before ship ment .
2. Only for Ricoh brand CSO 115 Volt version, Please note that the serial numbers
earlier than xx21100602 are out of the app licab le machines, because those are
equipped with the o lder ROM(H 081 7140H) which does not contain t he problem.
Page 44
Technical BulletinNo. CSO-026
SUBJECT: Scratch on the OPU
PREPARED BY: N. Mihara
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
FROM: FAX T.S. Section
Problem
The OPU may be damaged when using the machine, as shown
below. However, there is no problem on the printed image.
Cause
1. Both sides of the development roller may touch the metal
blade on the development roller. By this, the shaved
corpuscles may get in the space between the OPU belt and
the development roller, the both sides of the OPU belt may be
damaged.
DATE:
April 15th, 1993
MODEL: CSO
Scratch
OPU guide
2. The position of the OPU guide may be changed for some
reason, then the OPU belt may touch the plastic pins on
the develpment unit.
Action
1. If the above problem occurs, do not replace the OPU, because, there will be no problem on
the printed image, in the lifetime of the OPU.
2. Do not adjust and change the position of the OPU guide.
Note
Do not touch the sorface of the OPU belt and not clean with alcohol.
Page 45
Technical BulletinNo. CSO-027
SUBJECT: Tx cable Equ alizer
PREPARED BY: N. Mihara
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
We have added the tx equalizer feature an d char ged th e setting for the r x equ alizer by changing
the s oftware and the hardware as show n below. (MB CSO-027)
With these charge, more proper setting will be available for the communication quality.
FROM: FAX T.S. Section
MODEL: CSO
DATE:
April 14th, 1993
1. New setting
Bit SW 0A (Rx cable equalizer)
Bit SW 08 (Tx cable equalizer)
bit 7bit 6
00(OFF)00
01(Middle)10
10(High)20
11(Not used) Do not change
Regarding the Tx equalizer, it will be available only with the following combination.
Equalizer information on the TCR
(Journal)
(When Bit SW 00, bit 1 = 1)
2. Combination of the parts
FCU (MB CSO-035)MBU (MB CSO-027)ROM (MB CSO-027)
USAH0816153: USα
H0816152: USβ
H0816155: Telα
H0816154: Telβ
EURH0816151H0816025 R
AsiaH0816156H0816027 RH0817132 N
Regarding the affected date, please refer to the above MBS.
H0816026 NH0817140K
H0816039 EH0817139D
H0817131N HCS
H0816024 R
H0816029 F
--
H0817130N RICOH/ NRG
H0817133E France
H0817159K Language kit
Page 46
[2]
[1]
3rd mirror
Technical BulletinNo. CSO-028
SUBJECT: Dirty Mirrors
PREPARED BY: N. Mihara
CHECKED BY:
CLASSIFICATION:
FROM: FAX T.S. Section
MODEL: CSO
DATE:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
— Problem —
In the field, the scanner mirrors may become dusty (poor scanning quality).
In this case, we recommend that you do procedures 1 and 2.
— Procedure —
Proce dure 1.
Clean the mirrors with the mirror cleaning kit.
It is easy to clean the mirrors (there is no need to remove the ADF base).
June 30, 1993.
P/N: H0819300 (for CSO) Mirror C leaning Kit
• Mirror Cleaning Tool × 1pc
• Cleaning Felt × 30pcs
• Vinyl Bag × 1pc
[Preparation]
Attach the cleaning felts [1] to the mirror cleaning tool [2]. (Fig. 1)
(With one set of felts, you can clean the mirror up to 10 times)
[Cleaning Method]
(1) Remove the exposure glass.
(2) Insert the cleaning tool into the scanner. (Fig. 2)
(3) Clean the mirrors by sliding the tool.
(3~ 4 times for each mirror)
Front
Fig. 1
[1]
[1]
1st mirror
2nd mirror
Fig. 2
Page 47
Dust Protection S heet 2
FCU Sheet
Technical BulletinNo. CSO-028
SUBJECT: Dirty Mirrors
DATE:
June 30, 1993.
Procedure 2.
Install the mirror protection sheet kit. The sheets in the kit will prevent the mirrors from
becomeing dirty.
P/N: H0819900 Dust Protection Sheet Kit
• FCU Sh eet × 1pc
• Dust Protection Sheet 1 × 1pc
• Dust Protection Sheet 2 × 1pc
• CTM Sheet × 1pc
CTM Sheet
[CTM Shee t Installation]
(1) Open the front cover, then cover the OPC belt with
a piece of paper (do not touch the belt surface by
hand).
(2) Attach the CTM sheet. (Fig. 3)
Toner Duct
Fig. 3
[FCU Sheet I nstallation]
(1) Remove the rear/ left/ right/ lens covers.
(2) Insert the FCU sheet under the mirrors, then
attach the sheet to the right side and interior of
the ADF base. (Fig. 4)
[Dust Protection Sheet 1 and 2 Installation]
(1) Attach the dust protection sheet 1 to the left
side of the scanner and the upper side of the
shading plate. (Fig. 4)
(2) Attach the dust protection sheet 2 to the right
side of the scanner and the upper side of the
shading plate. (Fig. 4)
— Countermeasure —
Lens Cover
Dust Protection S heet 1
Fig. 4
We have applied the modification (attaching the protection sheets to the productions) from the
June. productions.
Page 48
Technical BulletinNo. CSO-028
SUBJECT: Dirty Mirrors
CTM Sheet
DATE:
June 30, 1993.
FCU Sheet
Dust Protection S heet
Page 49
Technical BulletinNo. CSO-029
SUBJECT: ADF Non Feed Prob lem
PREPARED BY: N. Mihara
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
FROM: FAX T.S. Section
MODEL: CSO
DATE: July 27, 1993
[Problem]
Non feed at the ADF may occur if copier paper which has silicone oil on the sorface is used as
a orig inal.
[Reason]
Some copier machines may leave too much silicone oil on copies.
[Countermeasure]
Please replace the pick-up roller with the following countermeasure part.
Part No. H0819504: Pick up roller (Carborundum)
Note: Please note that the ADF capacity will be decreased.
if the Carborundum roller is installed.
ADF capacity: 50 sheets (Normal rubber roller)
20 sheets (Carborundum)
Page 50
Technical BulletinNo. CSO-030
SUBJECT: Treatment for the Rx image when error occur
PREPARED BY: H.Yokoya ma
CHECKED BY: S.Hamano
CLASSI FICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
The following function has been added.
- Address 24061 (H) bit 3. (Default setting is 1)
0 : Even if an Rx error occurs during memory Rx, the machine keeps
the image in the memory.
1 : The data is erased.
- ROM suffix no.s which contain the above function.
• H0817130P~ (Europe version)
• H0817131P~ (HCS version)
• H0817133F~ (French version)
FROM: 2nd T.S. Section
DATE:
Dec. 15, 1994
MODEL:
CSO (Europe and French)
Page 51
DETAILED SECTION DESCRIPTIONS
PRINTER
April 8th, 1992
The following table shows the maximum incoming page lengths
reduced for each copy paper size. All lengths are in
millimetres.
that can be
The factory
setting of the reduction ratio is 4/3.
copyCopy PaperMaximum
Paper TypeLength
A5
B5
Letter279.4
A4297
F4, F
Legal
B4
* ● The page
148
182
330.2
355.6
364
memory cannot reduce incoming pages longer than 341 mm
Ratio = 3/2
214.5
265.5236
341/385 *
341/385 *
341/385 *
341/385 *
-
341/385 *341/385 *
reducable
Ratio = 4/3
190.7
341/365.9 *
341/385 *
341/385 *
341/385 *
incoming page lengths
Ratio =
163.4
202.3
313.6299.3
333.7318.5
341/371 .7 *
341/385 *
341/385 *
8/7Ratio = 12/11
156
193.1
341/354.8 *
341/382.5 *
341/385 *
(Europe) or 385 mm (other areas).
The values are calculated as follows.
Maximum incoming page length that can be reduced =
(Copy Paper Length - 5) x Reduction Ratio
For example, for A5 with a reduction ratio of 4/3
Max incoming data length = (148 -5) x 4/3 = 190.7
Incoming pages that are longer than the maximum length will not be
reduced, but will be printed on two pages and treated in accordance with the
02.
setting of bit 1 of bit switch
If this bit is 1, the bottom few lines of the page
will be repeated at the top of the next page. If this bit is O, the next page will
continue from where the first page left off.
Reduction Disabled
If bit 2 of bit switch 02 is at 1, the data will not be reduced. However, if the incoming page is up to x mm longer than the copy paper, the excess portion
will not be printed. The value of x can be from O to 15 mm. It is determined by
the setting of RAM address 24051 (copy mode: bits 3 to O, receive mode:
bits 7 to 4; bits 3 and 7 are the most significant bits).
Hex value
o
1
and so on until .
15
Value of x
0
1
15
Messages more than x mm longer than the copy paper are printed on two
pages and treated in accordance with the setting of bit 1 of bit switch 02.
2-19
Page 52
April 8th, 1992
DETAILED SECTION DESCRIPTIONS
PCBS AND THEIR FUNCTIONS
1. CPU (AFSP)
.
65C02
compatible microprocessor
. Interrupt control
. DMA control
. Data compression and reconstruction (high speed MH
second scanning)
. Modem (digital operations)
. Real time clock (battery backed-up)
. Memory control
. Control of all mechanisms (directly or through other chips)
. NCU control (through the I/0 Port)
coding
for 4.5-
2.110
Port
(LIOP)
. Clock control
. Sensor monitoring (including A/D conversion where necessary)
/
. Tone detection
. Motor drive
. Operation panel control
. Laser Interface control
3.
Laser Interface
(LIF)
. Page memory control
. Laser diode control
. Smoothing
4. Modem Analog Front End (Modem AFE)
. Modem (analog operations)
. Attenuation
5.
Video Processor
.
Analog/digital video signal processing
6. Hybrid IC
(HIC)
(VPP)
. Filters
7. RAM
.
128k
● 256k
. 768k
576k
for ECM (no back-up)
SAF memory (with battery
page memory (USA, Asia)
page memory (Europe)
2-30
back-up)
Page 53
April 8th, 1992
SERVICE TABLES AND PROCEDURES
NCU PARAMETERS
On the following pages, there are tables of factory settings for each country.
To enable the factory settings for a particular nation, program the Country
Code (RAM address 413B [use hex codes] or use Function 96 [input the
decimal value]) to the appropriate setting. The country code also affects the
NCU signal status (see section 2-3-7).
.
. For each RAM address, there are two columns. The left hand column
shows the actual value of the parameter. The right hand column shows
the value of the factory setting that is stored in the RAM. The factory settings are quoted either in hexadecimal code (the actual contents of the
RAM address) if there is a H after the value in the table, or in decimal
(converted from the actual hex contents of the RAM address) if there is
no H after the value.
. Some RAMs must be stored using
BCD;
see the
NCU
Parameter defini-
tion table for details.
. If the table entry is blank, this means that the value is not
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/CS1)
<Eraser Ass’y>
• The thickness of the cleaning blade of the clean er will b e cha ng ed to increase the
cleaning ability (4mm → 5mm)
• The distance between the gride plate and charge wire will be changed (6mm → 8mm)
<Power pack>
• The range and initial value of the VRC (VR for the charge corona) will be changed.
The above modification will ta ke pla ce fro m t he De cemb er 1st prod uction.
Page 57
Page 2/2
Technical BulletinNo. GENERAL-004
SUBJECT: Black bands/lines on the received copy
DATE:
November 11th, 1993
[Countermeasure in the field]
The countermeasu re method depends on the CV (Copy V olu me) of the machine.
•If the CV is less tha n 40 0 she ets/month
Turn VRC on the power pack to the maximum (Turn the VR clockwise until it stops)
•If the CV is more than 40 0 she ets/month
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 maste r u nit , so for
customers whose ACV/month is more than 400 sheets, the Erase r shou ld be chan ged.
[Request]
The essence of this problem is a dirty cha rge corona wire, so please do the following
• When a sales or service person visits a customer (at PM or EM), clean the cha rge
corona wire with the built-in cleaner
• Advise the customer to clean the charge coron a wire at a certain interval or if the
customer sees black bands/lines on the received copy.
Page 58
Page 1/2
Technical BulletinNo. GENERAL-005
SUBJECT: Black bands/lines on the received copy
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 blade of the clean er will b e cha ng ed to increase the
cleaning ability (4mm → 5mm)
• The distance between the gride plate and charge wire will be changed (6mm → 8mm)
<Power pack>
• The range and initial value of the VRC (VR for the charge corona) will be changed.
The above modification will take pla ce fro m t he Feb. 1st pro du ctio n.
Page 59
Page 2/2
Technical BulletinNo. GENERAL-005
SUBJECT: Black bands/lines on the received copy
DATE:
Feb. 3rd, 1994
[Countermeasure in the field]
The countermeasu re method depends on the CV (Copy V olu me) of the machine.
•If the CV is less tha n 40 0 she ets/month
Turn VRC on the power pack to the maximum (Turn the VR clockwise until it stops)
•If the CV is more than 40 0 she ets/month
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 maste r u nit , so for
customers whose ACV/month is more than 400 sheets, the Erase r shou ld be chan ged.
[Request]
The essence of this problem is a dirty cha rge corona wire, so please do the following
• When a sales or service person visits a customer (at PM or EM), clean the cha rge
corona wire with the built-in cleaner
• Advise the customer to clean the charge coron a wire at a certain interval or if the
customer sees black bands/lines on the received copy.
Page 60
Magnet
Page 1/1
Technical BulletinNo. 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 AType B
Brush4 MagnetsMagnet 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.
Page 61
Page 1/1
Technical BulletinNo. GENERAL-008
SUBJECT: Replacing the toner cassette
PREPARED BY:H. Yokoyama
CHECKED BY:
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
The instruction of the operator’s manual for replacing the toner cassette (CTM) is wrong.
We will insert the errata sheet to the operator’s manual.
Wrong: 1. Switch off the machine.
Correct: Keep the power switch on when replacing the toner cassette.
FROM: 2nd T.S. Section
MODEL:
CSO, CFO, CRO, CS1
DATE:
April, 11th, 1994
Page 62
Page 1/1
Technical BulletinNo. GENERAL-009
SUBJECT: Vertical Black Lines
PREPARED BY: H.Yokoyama
CHECKED BY: S.Hamano
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
[Problem]
Vertical black lines appear on the printed image.
[Cause]
The toner may stick on the Hot Roller, Fusing Stripper, Thermistor, an d The rmost at and this
toner may damage the surf ace of th e Hot Roller. Then, during copyin g toner is transferred by
the scratched part of the roller to cause vertical bla ck lines on the print ed image .
FROM: 2nd T.S. Section
MODEL:
CSO, CFO, CRO, CS1
DATE:
Jury. 30, 1994
[Countermeasu re]
The material of the surface of the Hot Roller ha s bee n cha nged to pre ven t th e tone r from
sticking on the Roller by the following modification
H0812100D → E
Because of the ab ove mo dif ication, the vende r has be en changed.
Clean the Fusing Stripper, The rmisto r and Thermo stat and take out the toner f rom th em whe n
visit the customer.
Page 63
Leak Current
(On CFO / CS1 FCU)
Diode
COM
COM
Regulator
Technical BulletinNo. Multi-001
SUBJECT: Memory Back-up Battery
DATE:
Jan. 19, 1995
PREPARED BY: Y.Okunishi
CHECKED BY: S.Hamano
CLASSIFICATION:
Action Required Revision of service manual
FROM: 2nd T.S. Section
MODEL:
CSO, CFO, CS1, LHO
Troubleshooting Information only
Retrofit Information Other
[Symptom]
Stored documents in the me mory migh t be erase d when the main power goes down .
A power failure report is printed with the following informa tion.
•Memory Tx Files: Destina tio n names or fax numb ers are print ed.
•Substitut e Rece ption Files: The Sender’s RTI or CSI is print ed if they are pro grammed.
CSO rejects incoming messages without RTI or CSI because
of the factory setting.
•Memory Lock Files: Progra mmed Quick Numb ers are printed.
[Cause]
Power loss from the memory back-up battery on FCU caused by excessive charge current, for
the following reasons.
(1) Leak current from Diode
The battery is charged after it is already
24V
24V
fully charged. This type of battery
is damaged if this occurs.
(2) Excessive charge voltage (CFO,
CS1,LHO) The target charge voltage
was 6.2V against 6.4V or under which is
recommended by the battery maker.
This margin was too small for this battery.
Zener
Diode
Battery
COM
[Modification]
See MB C Series-048A.
OUT
Page 64
Technical BulletinNo. Multi-001
SUBJECT: Memory Back-up Battery
[Action Taken]
1. Install the modified FCU to deal with customer claims.
2. Request technicians no t to turn off the main power if a docume nt is stored
in the memory.
[Note]
•Stored data ot he r tha n docume nts is not erased even if the main power goes down.
DATE:
Jan. 19, 1995
Page 65
Technical BulletinNo. Multi-002
SUBJECT: Toner Spillage during Transportation
PREPARED BY: Y. Okunishi
CHECKED BY: M. Iwasa
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Preventive Action
Background: Machines have been sent to customers af ter pre-installation and sent back to the
service center for repair.
Problem:Toner had spread inside the ma chin e du ring tran sportation.
Cause:Toner leaked from the development unit , the toner cartridge, or some where
in the toner path during tran sportation.
Preparation for transportation:
(1) Transportation withou t he avy vibra tio n
(Example: A technician should carry the machine with care.)
• F/L series fax machines:
The development unit can be connected to a CTM with toner.
However, the toner path under the CTM must be covered by some
adhesive tape. See the attached illust rat ion.
• C series fax machines:
Follow RTB No. CSO-006
• Other order machines:
Follow (2) below.
FROM: 2nd T.S. Section
MODEL:
All laser plain paper fax
machines
DATE:
Jul. 15.1995
(2) Transportation with heavy vibration
(If a third party handles the transportation, follow this procedure.)
• F/L series fax machines:
Remove the development unit and the CTM fro m the machin e if toner
has been installed. They must not be delivered in the same box as the
machine, because they contain toner which may spill out. Th e to ne r
inside the machine must be clean ed away or th e toner path under the
CTM must be covered with tape.
• C series fax machines and others:
Remove the development unit and CTM (or Toner Cartridge) from
the machine if toner has been inst alle d, and clean the toner from
inside the machine.
The removed development unit and CTM must not be delivered
in the same box as the machine.
Page 66
Technical BulletinNo. Multi-002
SUBJECT: Toner Spillage during Transportation
Inside of FX6 and LSO
Drum
DATE:
Jul. 15.1995
Toner path
Note: Adhesion of the tap e sho uld not be strong. Otherwise, it ma y not be ta ken off
cleanly from the machine, or th e toner path may be damaged whe n it is taken
off.
Please request tape samples for th e FX6 and LSO from Ricoh.
Adhesive tape
Page 67
Page 1/3
Technical BulletinNo. Multi - 004A
SUBJECT: Fusing Unit
PREPARED BY: Y.Okunishi
CHECKED BY: S.Fujii
CLASSIFICATION:
Action Required Revision of service manual
Troubleshooting Information only
Retrofit Information Other
A: "NOTE" is added to page 2/3.
SYMPTOM:
Background on received and copied documents.
Cause:
Hot Roller failure as a result of not changing the Cleaning Pad at the 10K PM.
Failure to change the Cleaning Pad results in dirty Strippers and Thermostat and
then Hot Roller failure.
As the machine warms up from the standby temperature to the fusing
temperature, it is exposed to slight overheating before the temperature levels
off. This leads to softening of the Teflon layer on the Hot Roller. As a result, the
Teflon layer peels off in the areas where the Strippers and other parts come in
contact with it. Dirty Strippers and Thermostat put more stress on the Hot Roller and
cause premature Hot Roller failure.
Also, the dirty Thermistor causes the Hot Roller to overherat and fail prematurely.
FROM: Quality Assurance Center
DATE:
Oct. 15, 1996
MODEL:
CSO, CRO, CS1, CFO,
CGO
A second cause can be a damaged (bent ) Thermistor from a previous service visit.
The damaged Thermistor causes the Hot Roller to overheat and fail prematurely.
SOLUTION:
Ricoh recommends replacing the Cleaning Pad at the 10K PM. However, this is
sometimes ignored. Realizing this, Ricoh will conduct the following modifications to
protect the Hot Roller from the failure mentioned above.
The hot rollers shipped from the SPC in Japan will be replaced by the
Hot Roller Kit in July.
This kit will be comprised of the following: Hot Roller, Cleaning Pad, Thermistor,
Thermistor Bracket, Screw, Strippers (2), Stripper Springs (2) and Installation Sheet.
The individual Hot Roller will be no longer available. The Cleaning Pad will
continue to be a Service Part.
Ricoh recommends change of the above modified parts and Cleaning Pad when the failed
Hot Roller is replaced with the new one.
NOTE
(A): Please refer to the following instructions and fix the cover to the fusing unit
and check that the harness is not pinched before installing the fusing unit in the
machine.
If the metal wire of the harness contacts the thermistor bracket, a no power
condition may occur. Please check the thermistor harness if this occurs.
Fusing Cover
(Bad)
Edge of the cover may damage
the harness
Edge
(Good)
Fusing Unit
Page 69
Installation Procedure for the Thermistor
1. Assemble the thermistor and the bracket
with the screw.
Bracket - Thermistor
H0812141
Thermistor - Fusing Unit
H0815035
Do not bendthis part
2. Install the
Thermistor Ass’y
( ✻ 4)
Thermistor - Fusing Unit
H0815035
Harness - Thermostat
(✻ 3)
Page 3/3
Thermostat - Fusing Unit
H0812134
Screw - M3 x 8
03130080B
(✻ 1)
Note: Set the projection on
the thermistor into
the hole in the bracket.
Note: ✻ 1 Place the thermostat harness under the part of the bracket.
✻ 2 Do not cross the thermostat harness and the thermistor harness.
✻ 3 Push the thermistor head (sensor) gently against the hot roller witha finger to make sure that the thermistor
head touches the hot roller surface. Do not push it strongly.
✻ 4 Do not bend the thermistor neck (spring plate) when installing or cleaning it .
If the thermistor is bent, replace it.
(✻ 2)
Bracket - Thermistor
H0812141
Stay - Fusing Unit - Upper
H0812175
Page 70
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Model:
General
echnical
B
ulletin
Date:
31-Oct-97
No:
PAGE: 1/3
011
Subject:
From:
Classification:
Check Items
The following functions for which the clock timer is used were checked to see whether or
not they will function correctly at 0:00 on Jan. 1, 2000.
1) Display and print of the date and time
2) Clock adjustment
3) Send later mode with memory and without memory
Year 2000 Problem
QAC 2nd Field Information Dept.
Troubleshooting
Mechanical
Paper path
Other ( )
The year must be changed to 2000 or 00 from 1999 or 99 and the date must be kept
correctly after the start of the year 2000.
The date and time can be adjusted after the start of the year 2000.
The dialling time must be at the set time after the start of the year 2000.
Part information
Electrical
Transmit/receive
Prepared by:
Action required
Service manual revision
Retrofit information
Y.Okunishi
4) Automatic re-transmission.
When a communication error happens, the machine dials the same destination again
automatically at an interval. This must function correctly after the start of the year
2000.
5) Weekly timer and night timer
The energy saver mode (fusing unit) control must work correctly.
6) Displayed date after a power failure
The correct date must be kept by the battery back-up feature.
Reissue date: 15-Nov-97
The items in bold italic have been corrected or added.
Model:
General
Date:
31-Oct-97
No:
PAGE: 1/3
011
A
Subject:
From:
Classification:
Check Items
The following functions for which the clock timer is used were checked to see whether or
not they will function correctly at 0:00 on Jan. 1, 2000.
1) Display and print of the date and time
2) Clock adjustment
3) Send later mode with memory and without memory
Year 2000 Problem
QAC 2nd Field Inf or mation Dept.
Troubleshooti ng
Mechanical
Paper path
Other
The year must be changed to 2000 or 00 from 1999 or 99 and the date must be kept
correctly after the year 2000.
The date and time can be adjusted after the time becomes the year 2000.
The calling time must be the set time after the time becomes the year 2000.
(Info only)
Part information
Electrical
Transmit/receive
Prepared by:
Action required
Service manual revision
Retrofit information
Y.Okunishi
4) Automatic re-transmission.
When the communication error happens, the machine calls to the same destination
again automatically with an interval. This must function correctly after the time
becomes the year 2000.
5) Weekly timer and night timer
The energry saver mode (heater) control must work correctly.
6) Displayed date after a power failure
The correct date must be kept by the battery.
Models Checked
1) K50 series (FAX10, 20, 60, etc.)
2) K70 series (FAX90, 95, 105, etc.)
3) K90 series (FAX80, 85, 75, 86, etc.)
4) LE series (FAX08, 09, Phone fax for ATT, etc.)
5) B series (B1, RF810, FAX12, FAX300, etc.)
6) ZB series (FAX220, FAX240, Innfax, etc.)
7) BARBARA series (RF01, 02, 03, 05, 06, etc.)
Page 74
T
Model:
8) OX series (FAX21, 22)
9) PF series (PF-1, PF-2)
10) A series (FAX500, 550, etc.)
11) B60 series (FAX170, 180, etc.)
12) K100 series (FAX1000L, 1010L, etc.)
13) K105 series (FAX4000L, etc.)
14) K200 series (FAX7000L, etc.)
15) KV series (FAX2800L, 1200L, etc.)
16) C series (FAX3000L, 4500L, 5600L, etc.)
17) L80 (MV715)
18) I series (FAX800, 880, 680, etc.)
19) F\L series (FAX2700L, 4700L, MV310, etc.)
General
echnical
B
ulletin
Date:
31-Oct-97
No:
PAGE: 2/3
011
A
20) FX7, LX7 (FAX1700L, MV106, FAX1750MP, etc.)
21) L20 series (Aficio FX10)
Problem found
Most of the models except the following models, will not experience any problems.
a) The day of week, that appears on the display only in the clock adjustment
mode, is returned back to SUNDAY every time when the clock adjustment is
done after the time becomes the year 2000.
So, the programmed weekly timer does not work correctly.
have the weekly timer.)
If the clock adjustment is not done after the time becomes the year 2000, the
date and the day of week is kept correctly.
(AFO’ s do not
b) Clock adjustment is available only for the year 91 through 99. The other years
cannot be set. (Month, day and time can be adjusted.)
Page 75
T
Model:
2) K200 (FAX7000L)
General
a) Clock adjustment is available only for the years 88 through 99. The other years
cannot be set. (Month, day and time can be adjusted.)
b) The send later mode does not function (no calling happens) if it passes the
time into the year 2000.
No report is printed and the rest message in the memory is not cleared
automatically but it is cleared by the user operation.
c) Automatic re-transmission is not done if the time becomes the year 2000 in the
interval after the transmission failure.
The rest message in the memory is not cleared automatically but it is cleared
by the user operation.
d) The display year is returned back to 88 after the power failure after the time
becomes the year 2000.
echnical
B
ulletin
Date:
31-Oct-97
No:
PAGE: 3/3
011
A
The other functions in these models work correctly.
Schedule of the countermeasure ROMs
1) AFO, CSO, CS1, CRO:
In January 1998.
2) K200(FAX7000L):
In April 1998.
RCREASIA
∗∗∗
Page 76
T
echnical
B
ulletin
MB Correction
Reissue date: 15-Jan-98
The items in bold italic have been corrected or added.
PAGE: 1/3
Model:
Subject:
From:
Classification:
Check Items
The following functions for which the clock timer is used were checked to see whether or
not they will function correctly at 0:00 on Jan. 1, 2000.
1) Display and print of the date and time
2) Clock adjustment
3) Send later mode with memory and without memory
General
Year 2000 Problem
QAC 2nd Field Information Dept.
Troubleshooting
Mechanical
Paper path
Other (Info only)
The year must be changed to 2000 or 00 from 1999 or 99 and the date must be kept
correctly after the year 2000.
The date and time can be adjusted after the time becomes the year 2000.
The calling time must be the set time after the time becomes the year 2000.
Part information
Electrical
Transmit/receive
Date:
15-Jan-98
Prepared by:
Action required
Service manual revision
Retrofit information
No:
Y.Okunishi
011
B
4) Automatic re-transmission.
When the communication error happens, the machine calls to the same destination
again automatically with an interval. This must function correctly after the time
becomes the year 2000.
5) Weekly timer and night timer
The energry saver mode (h eater) control must work correctly.
6) Displayed date after a power failure
The correct date must be kept by the battery.
Models Checked
1) K50 series (FAX10, 20, 60, etc.)
2) K70 series (FAX90, 95, 105, etc.)
3) K90 series (FAX80, 85, 75, 86, etc.)
4) LE series (FAX08, 09, Phone fax for ATT, etc.)
5) B series (B1, RF810, FAX12, FAX300, etc.)
6) ZB series (FAX220, FAX240, Innfax, etc.)
7) BARBARA series (RF01, 02, 03, 05, 06, etc.)
Page 77
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Model:
8) OX series (FAX21, 22)
9) PF series (PF-1, PF-2)
10) A series (FAX500, 550, etc.)
11) B60 series (FAX170, 180, etc.)
12) K100 series (FAX1000L, 1010L, etc.)
13) K105 series (FAX4000L, etc.)
14) K200 series (FAX7000L, etc.)
15) KV series (FAX2800L, 1200L, etc.)
16) C series (FAX
17) L80 (MV715)
18) I series (FAX800, 880, 680,
19) F\L series (FAX2700L,
20) FX7, LX7 (FAX1700L, MV106, FAX1750MP, etc.)
General
2500L
,3000L,
3700L
3500L
MV74
, 4500L, 5600L, etc.)
, etc.)
, 4700L, MV310, etc.)
Date:
15-Jan-98
No:
011
B
21) L20 series (Aficio FX10)
Problem found
Most of the models except the following models, will not experience any problems.
a) The day of week, that appears on the display only in the clock adjustment
mode, is returned back to SUNDAY every time when the clock adjustment is
done after the time becomes the year 2000.
So, the programmed weekly timer does not work correctly. (AFO’ s do not
have the weekly timer.)
If the clock adjustment is not done after the time becomes the year 2000, the
date and the day of week is kept correctly.
b) Clock adjustment is available only for the year 91 through 99. The other years
cannot be set. (Month, day and time can be adjusted.)
9620, Infotec 3301/3305, Nashua F492)
NRG
9660/9661/9662, Omnifax L40/41,
NRG
Page 78
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ulletin
PAGE: 3/3
Model:
2) K200 (FAX7000L)
The other functions in these models work correctly.
General
a) Clock adjustment is available only for the years 88 through 99. The other years
cannot be set. (Month, day and time can be adjusted.)
b) The send later mode does not function (no calling happens) if it passes the
time into the year 2000.
No report is printed and the rest message in the memory is not cleared
automatically but it is cleared by the user operation.
c) Automatic re-transmission is not done if the time becomes the year 2000 in the
interval after the transmission failure.
The rest message in the memory is not cleared automatically but it is cleared
by the user operation.
d) The display year is returned back to 88 after the power failure after the time
becomes the year 2000.
Date:
15-Jan-98
No:
011
B
Schedule of the countermeasure ROMs
1) AFO, CSO, CS1, CRO:
In January 1998.
2) K200(FAX7000L):
In April 1998.
RCREASIA
∗∗∗
Page 79
T
Model:
General
echnical
B
ulletin
Date:
15-Apr-98
No:
PAGE: 1/3
014
Subject:
From:
Classification:
The year 2000 issue was explained in RTB No. General-011B.
That RTB explains only the technical matters of what will happen after the year 2000 in
some models, and the countermeasures.
At this time, we would explain how to talk with customers about the year 2000 issues
related to fax machines.
Basically, we can say to the customers that there is no major issue reated to basic
operation after the year 2000, and they don't need to take any preventative action before
the year 2000.
The only thing that the customers need to know is that the following operations will be
changed after the year 2000.
Action Plan for the Year 2000 Issues
QAC Field Inf or mation Dept.
Troubleshooti ng
Mechanical
Paper path
Other (Info only)
Part information
Electrical
Transmit/receive
Prepared by:
Action required
Service manual revision
Retrofit information
First, please do not forget to inform the customers that they don't need to do anything if
they do not go into the clock adjustment mode.
A) Adjustment of the year
A-1) For the year 2000
①Set the clock to 11:59 PM (or 23:59) on December 31 1999, and wait for one minute.
②The year changes to 2000 automatically, then set the current time.
(Do not change the year.)
A-2) For the year 2001
③After the above step ①, set the clock to 11:59 PM (or 23:59) on December 31 2000, and
wait for one minute.
④The year changes to 2001 automatically, then set the current time.
(Do not change the year.)
A-3) For years 2002 and later, repeat the same procedure as above.
Page 80
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Model:
General
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ulletin
Date:
15-Apr-98
No:
PAGE: 2/3
014
B) Adjustment of the weekly timer (Heater timer)
This is only for customers who use the weekly timer. (We do not think that many
customers are using this function.)
Please recommend adjusting the timer on Sunday if the customer can do it.
If they cannot do it on Sunday, the ROM should be changed to the new one.
The new ROM includes the countermeasure for the above A) also.
2. K200 (FAX7000L)
A) Adjustment of the year
First, please do not forget to inform the customers that they don't need to do anything if
they do not go into the clock adjustment mode.
A-1) For the year 2000
Set the clock to 11:59 PM (or 23:59) on December 31 1999, and wait for one minute.
①
The year changes to 2000 automatically, then set the current time.
②
(Do not change the year.)
A-2) For the year 2001
Except AF0
••••
After the above step ①, set the clock to 11:59 PM (or 23:59) on December 31 2000,
③
and wait for one minute.
The year changes to 2001 automatically, then set the current time.
④
(Do not change the year.)
A-3) For years 2002 and later
Repeat the same procedure as above.
If the customer switches off the machine after the year 2000, the year displayed returns to
1988. In this case, follow the above procedure to adjust the clock.
B) Send later mode
Please notify the customer that they should not use send later mode on December 31st
1999, if the transmission will be done on the next day.
If the customer cannot guarantee that they will follow this advice, the ROM should be
changed.
Page 81
T
Model:
Schedule of the countermeasure ROMs
1) AFO, CSO, CS1, CRO:
2) K200 (FAX7000L):
Both are delayed.
∗
General
In May 1998.
In May 1998.
echnical
B
ulletin
Date:
15-Apr-98
No:
PAGE: 3/3
014
RCREASIA
∗∗∗
Page 82
RICOHTechnical
Model:
LSO, CRO, CS1, AFO, AF2, K200
Bulletin
Date:
31-May-98
No:
PAGE:
Multi - 008
1/8
Subject:
From:
Classification:
Attached please find the list of the ROMs for the year 2000 problem and the procedure for
making R200 ROMs from the ROM file s.
Note:
Please refer to RTB nos. General 11 and 14 for details.
·
8 ROMs for the K200 are combined in one file.
·
ROMs for the year 2000 problem
QAC Field Information Dept.
Troubleshooting
Mechanical
Paper path
Other ( )
Part information
Electrical
Transmit/receive
Prepared by:
Action required
Service manual revision
Retrofit information
Y.Okunishi
RCREASIA
***
Page 83
RICOHTechnical
Model:
LSO, CRO, CS1, AFO, AF2, K200
Bulletin
Date:
31-May-98
No:
PAGE:
Multi - 008
2/8
ROMs for the year 2000May 29, 1998
Y.Okunishi
Product
Code
CSOH0817138yesCSO71388552c30usaH081-203000LRICOHUS91/1293/416,747 2M ROM (1ROM/unit)
1. ROM Writing
This will vary depending on the ROM writer buffer capacity.
This is an example with a buffer RAM capacity of 512KB.
During the first load, 512KB is sent.
During he first load, 0H~7FFFFH can be loaded.
During the second, 800000H~FFFFFH can be loaded.
Since the K200 is 1MB, the sending is completed after 512KB worth has been sent
twice.
First Time
1-1) Transfer to the ROM writer.
Motorola-S Format
Receiving location address00000000
Send/Receive buffer RAM start00000000
Sending buffer RAM endDevice capacity
1-2) Program on the ROM
Set program16-bit series
Device Count4
Device Start00000000
Buffer RAM Start00000000
Data TypeBIGENDIAN
PAGE:
6/8
Second Time
2-1) Transfer to the ROM writer.
Motorola-S Format
Receiving location address00080000
Send/Receive buffer RAM start00000000
Sending buffer RAM endDevice capacity
2-2) Program on the ROM
Set program16-bit series
Device Count4
Device Start00000000
Buffer RAM Start00000000
Data TypeBIGENDIAN
When the buffer RAM capacity is 1MB, the RAM writing is as follows.
1MB can be sent during the first load.
OH~FFFFFH can be loaded.
Since the K200 is 1MB, it can be transferred all at once.
Page 88
RICOHTechnical
First Time
1-1) Transfer to the ROM writer.
Motorola-S Format
Receiving location address00000000
Send/Receive buffer RAM start00000000
Sending buffer RAM endDevice capacity
1-2) Program on the ROM
Set program16-bit series
Device Count4
Device Start00000000
Buffer RAM Start00000000
Data TypeBIGENDIAN
Second Time
2-1) Transfer to the ROM writer.
Since 1MB can be sent the first time, this is not necessary.
2-2) Program on the ROM
Set program16-bit series
Device Count4
Device Start00000000
Buffer RAM Start00080000
Data TypeBiGENDIAN
Bulletin
PAGE:
7/8
ROM locations (Top view of MBU)
3-8 (3’)3-0 (4’)
2-8 (1’)2-0 (2’)
1-8 (3)1-0 (4)
0-8 (1)0-0 (2)
() The number in the parentheses is the ROM writer socket number.
[‘] The second time is indicated.
The ROM part numbers start from 0-8.
(Ex: For the FAX7000L(US), 0-8:H0087260, 3-0:H0087267)
Reissue date: 30-Jun-98
The items in bold italic have been corrected or added.
Model:
General
Date:
15-Jan-98
No:
PAGE: 1/3
C
011
Subject:
From:
Classification:
Check Items
The following functions for which the clock timer is used were checked to see whether or
not they will function correctly at 0:00 on Jan. 1, 2000.
1) Display and print of the date and time
2) Clock adjustment
3) Send later mode with memory and without memory
Year 2000 Problem
QAC 2nd Field Information Dept.
Troubleshooting
Mechanical
Paper path
Other (Info only)
The year must be changed to 2000 or 00 from 1999 or 99 and the date must be kept
correctly after the year 2000.
The date and time can be adjusted after the start of the year 2000.
The calling time must be the set time after the start of the year 2000.
Part information
Electrical
Transmit/receive
Prepared by:
Action required
Service manual revision
Retrofit information
Y.Okunishi
4) Automatic re-transmission.
When a communication error occurs, the machine calls the same destination again
automatically after an interval. This must function correctly after the start of the year
2000.
5) Weekly timer and night timer
The energy saver mode (heater) control must work correctly.
6) Displayed date after a power failure
The correct date must be kept by the battery.
Models Checked
1) K50 series (FAX10, 20, 60, etc.)
2) K70 series (FAX90, 95, 105, etc.)
3) K90 series (FAX80, 85, 75, 86, etc.)
4) LE series (FAX08, 09, Phone fax for ATT, etc.)
5) B series (B1, RF810, FAX12, FAX300, etc.)
6) ZB series (FAX220, FAX240, Innfax, etc.)
7) BARBARA series (RF01, 02, 03, 05, 06, etc.)
Page 91
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echnical
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ulletin
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Model:
8) OX series (FAX21, 22)
9) PF series (PF-1, PF-2)
10) A series (FAX500, 550, etc.)
11) B60 series (FAX170, 180, etc.)
12) K100 series (FAX1000L, 1010L, etc.)
13) K105 series (FAX4000L, etc.)
14) K200 series (FAX7000L, etc.)
15) KV series (FAX2800L, 1200L, etc.)
16) C series (FAX2500L,3000L, 3500L, 4500L, 5600L, etc.)
17) L80 (MV715)
18) I series (FAX800, 880, 680, MV74, etc.)
19) F\L series (FAX2700L, 3700L, 4700L, MV310, etc.)
20) FX7, LX7 (FAX1700L, MV106, FAX1750MP, etc.)
21) L20 series (Aficio FX10)
General
Date:
15-Jan-98
No:
011
C
22) K10 series (FX120, Rapicom120, FX210/230, Rapicom210/230, etc.)
23) K20 series (FX5000, Rapicom5000, etc.)
24) K60 series (FAX610, Rapicom610, etc.)
25) K83 series (FAX830, Rapicom830, etc.)
26) FR4, FR6 (FAX4800L, FAX3800L, etc.)
Problem found
Most models, except the following models, will not experience any problems.
a) The day of week, that appears on the display only in the clock adjustment
mode, is returned back to SUNDAY whenever the clock adjustment is done
after the start of the year 2000.
So, the programmed weekly timer does not work correctly. (AFO’ s do not
have the weekly timer.)
If the clock adjustment is not done after the start of the year 2000, the date and
the day of week is kept correctly.
b) Clock adjustment is available only for the year 91 through 99. The other years
cannot be set. (Month, day and time can be adjusted.)
Page 92
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echnical
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Model:
2) K200 (FAX7000L)
3) K60 series (FAX610, Rapicom610, Infotec6550)
General
a) Clock adjustment is available only for the years 88 through 99. The other years
cannot be set. (Month, day, and time can be adjusted.)
b) The send later mode does not function (no calling happens) if it passes the time
into the year 2000.
No report is printed. The message in the memory is not cleared automatically
but must be cleared by user operation.
c) Automatic re-transmission is not done if the year 2000 starts in the interval after
the transmission failure.
The message in the memory is not cleared automatically but must be cleared
by user operation.
d) The display year is returned back to 88 after a power failure after the start of
the year 2000.
K83 series (FAX830, Rapicom830, Infotec6750)
Date:
15-Jan-98
No:
011
C
a) The day of week is not displayed correctly after the start of the year 2000.
b) The send later mode does not function (calling at 0:00AM January 1st
2000).
c) The display year is returned back to 85 when the power fails after the
start of the year 2000.
The other functions in these models work correctly.
Schedule for the countermeasure ROMs
1) AFO, CSO, CS1, CRO:
In
K200 (FAX7000L):
2)
In May 1998
3) K60, K83: A ROM will not be available.
April
1998.
(The corrected version will be in July 1998.)
RCREASIA
∗∗∗
Page 93
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echnical
B
ulletin
RTB Correction
Reissue date: 30-Jun-98
The items in bold italic have been correction or added.
Model:
CSO, CRO, CS1, AFO, AF2, K200
Date:
31-May-98
No:
PAGE: 1/5
Multi-008
A
Subject:
From:
Classification:
Attached please find the list of ROMs for the year 2000
The ROM files have been saved in the Ricoh QAC server except for the K200 ROMs.
(EP ROMs for the K200 will be prepared by the beginning of June.)
Note:
• Please refer to RTB nos. General 11 and 14 for details.
ROMs for the year 2000 problem
QAC Field Information Dept.
Troubleshooting
Mechanical
Paper path
Other ( )
Part information
Electrical
Transmit/receive
Prepared by:
. (The list was updated.)
Y. Okunishi
Action required
Service manual revision
Retrofit information