Ricoh AFICIO 200 Technical Bulletin AF200

Technical Bulletin No. RTB-001

SUBJECT: Service manual correction DATE:Nov. 15, ’96

PAGE: 1 of 4

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

for

Revision of service manual
Information only
Other

FROM: 2nd Field Information Dept. QAC

MODEL: AD1

The following parts of the service manual have been corrected.

1. Copying Speed in Multicopy mode, page 1-2

- Wrong -

A4 sideways/

11"x8

1/2

"

A3/11"x17" B4/8

No optional memory 15 9 10
With 4MB or 8MB
optional memory

20 11 12

1/2

"x14"

- Correct -

Non-memory copy
mode (1 to 1 copy)

A4 sideways/

11"x8

1/2

"

15 9 10

A3/11"x17" B4/8

1/2

Memory copy mode 20 11 12

2. COPY PROCESS, Overview, page 1-12

The discharge brush bias has been changed from +2 kV to - 2 kV.

"x14"

Technical Bulletin No. RTB-001

SUBJECT: Service manual correction DATE: Nov. 15, ’96

PAGE: 2 of 4

3. ORIGINAL SIZE DETECTION IN PLATEN MODE, page 2-4
Second paragraph from the bottom, second sentence

- Wrong -

This can cause excess toner to be transfered to the transfer roller, so users should be
instructed to always set the paper lengthwise on the by-pass tray. This problem occurs for
the first page only. The registration sensor detects the length of the first page, and will
assume that the following sheets of copy paper are the same length.

- Correct -

However, in this machine, for each page, the data signal to the laser diode is stopped to
match the copy paper length detected by the registration sensor.

4. LASER EXPOSURE, Overview, page 2-18
The polygon motor speed

Resolution (dpi) Modes
Wrong 400 dpi Copy, Fax, and Printer
Correct 400 dpi Copy and Printer

5. PAPER SEPARATION AND TRANSPORTATION, page 2-57

First paragraph, second sentence

- Wrong -

The high voltage supply board [B] applies a constant dc voltage, +2 kV (When .....), or

+2.5 kV (from......) to the discharge brush.

- Correct -

The high voltage supply board [B] applies a constant dc voltage, -2 kV (When .....), or -2.5

kV (from......) to the discharge brush.

6. ENERGY SAVER MODE, COPIER/PRINTER, page 2-66

In the block diagram

- Wrong - - Correct ­Auto Shut Off Mode

CPU/GAPD On

Auto Shut Off Mode

CPU/GAPD Off

Technical Bulletin No. RTB-001

SUBJECT: Service manual correction DATE: Nov. 15, ’96

PAGE: 3 of 4

7. Power Consumption, page 2-70
Note column for Night Mode Level 2

- Wrong -

If an incoming call (ringing signal) is detected, or if the user tries to send a fax, the
machine goes into Night Mode Level 1.

- Correct -

If an incoming call (ringing signal) is detected, the machine goes into Night Mode Level 1.

8. SP mode no. 4-417, page 4-16

Wrong Correct
no. 7 SBU Test 1 No function
no. 8 SBU Test 2
no. 9 SBU Test 3

9. PM TABLE

The discharge brush should be treated as a PM part.

AROUND THE DRUM

EM 100k 200k 300k NOTE

Discharge Brush R R R

Technical Bulletin No. RTB-001

SUBJECT: Service manual correction DATE: Nov. 15, ’96

PAGE: 4 of 4

11. MSU BOARD/BICU BOARD, page 6-36

The callouts should be corrected as follows.

[A]

[B]

[C]

[C]
[B]

Technical Bulletin No. RTB-002

SUBJECT: Caution about not mixing different size originals with DF-43 DATE: Nov. 15, ’96

PAGE: 1 of 1

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

Instruct customers not to mix different size originals when feeding them with
the DF-43.

Note : The same width of originals, such as A4 and A3, can be mixed in facsimile

mode only.

Reason:

With the DF-43, the original size will be detected when the originals are placed on the
original table. Therefore, when mixing different size originals on the table, the
maximum size detected will be used for all pages of the original.

for

Revision of service manual
Information only
Other

FROM: 2nd. Field Information Dept. QAC

MODEL:

AD-1

Symptoms when mixing different original sizes:

In copying mode:

- The machine will select the copy paper size to match the maximum original size.

- In auto reduce/enlarge mode with the designated copy paper size, the reproduction
ratio will be selected to match the maximum original size.

In facsimile mode:

- When mixing the same width of originals, the facsimile transmission will be made
properly.

- If mixing originals with different widths, the originals with a smaller width will be
transmitted with a white margin at the left end, as originals will be scanned with the
maximum width.

REVISED ON: NOVEMBER 30, ’96

Technical Bulletin No. RTB-003

(V2.0)

SUBJECT: Black Dot reproduction can be reduced DATE: Nov. 30, ’96

PAGE: 1 of 3

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

If there are black dots on the copy, especially when making generation copies,
take the following countermeasures.

Causes :

1. The AD-1 scanner is very sensitive, so it will reproduce tiny specks on the
exposure glass or faint dots on a original in the copy.

2. When using the document feeder, the DF exposure glass may be smudged from
originals.

Recommended Measures :

for

Revision of service manual
Information only
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FROM: 2nd. Field Information Dept. QAC

MODEL:

AD-1

1. Change the MTF filter and Threshold level settings as follows.

SP Mode Default Setting

MTF Filter 4-407-2* 7 4
Threshold Level 4-418-1 48 55

* :The current MTF Filters (SP modes 4-407-1 to 4) are for greyscale mode. Fax

mode always uses binary mode
instructions) so these filters have no influence on fax mode.

* : With the new version of the ROM, new MTF filters have been added for text mode

with binary picture processing (Black and White text originals), and they are
independent of the above filters. Refer to "Additional Information" in this RTB.

(refer to page 13 of the copier’s operating

Recommended Setting as a

Countermeasure

REVISED ON: NOVEMBER 30, ’96

Technical Bulletin No. RTB-003

(V2.0)

SUBJECT: Black dot reproduction can be reduced DATE: Nov. 15, ’96

PAGE: 2 of 3

2. After changing the MTF filter and Threshold level, if you still find an unacceptable
level of black dots on the copy, or poor reproduction of a low contrast original, such
as one written in pencil, do the following.
Change the MTF filter and Threshold levels by referring to the following table. A

table value of "0" is the result of using the settings recommended on the previous
page (MTF Filter: 4, Threshold: 55). The default setting is "+5" (MTF Filter: 7,
Threshold: 48).

- Using a lower table value decreases the amount of black dots, but will reduce
the reproduction of low contrast originals.

- Increasing the value will increase the reproduction of low contrast originals,
but black dot reproduction will also increase.

(Weak) ← MTF Filter → (Strong)

0 4 7 6

(High)

↑

Threshold

↓

(Low)

3. If you find black dots when using the document feeder, clean the exposure glass.

ADDITIONAL INFORMATION:

With the new ROM version (ROM version E for North American models or D for
European models), the following two MTF filters have been added for text mode with
binary picture processing (designated for black/white text mode). The current filters of
SP Modes 4-407-1 to 4 are for text mode with grayscale processing. Use these SP
Modes with the new ROM version for binary picture processing mode.

1) SP Mode 4-407-8: For reproduction ratios of 25 % - 83% (use the table below)

2) SP Mode 4-407-9: For reproduction ratios of 84% - 400% (use the above table)

(High)

↑

Threshold

↓

(Low)

64 -7 -5 -2 -1
55 -6 0 +1 +3
48 -4 +2 +5 +7

40 -3 +4 +6 +8

(Weak) ← MTF Filter → (Strong)

2 0 4 7
64 -6 - 4 -1 +1
55 -5 0 +2 +4
48 -3 +3 +6 +8

40 -2 +5 +7 +9

REVISED ON: NOVEMBER 30, ’96

Technical Bulletin No. RTB-003

(V2.0)

SUBJECT: Black dot reproduction can be reduced DATE: Nov. 15, ’96

PAGE: 3 of 3

The new ROM and the change of the default settings (described in "Recommended
Measures") have been incorporated into the production machines as follows.

Model Code Model Production Machine Serial Number
A193-10 Nashuatec November A106110001
A193-15 Savin October 6A76100001
A193-17 Ricoh-North America October A7226100001
A193-55 Lanier November L5026110001
A193-27 Ricoh - EU October A72226100531

Technical Bulletin No. RTB-004

SUBJECT: Perform TD Sensor Intial Setting (SP mode 2-801) at

installation

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

At installation of the AD-1, perform the TD Sensor Initial Setting as shown below
before making copies.

Problems :

The following problems may occur when the TD Sensor Initial Setting is not done at
the time of installation for the AD-1.

1. Blank areas at 20 mm intervals at the right end of copies (rear end of the
machine).

for

Revision of service manual
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FROM: 2nd. Field Information Dept. QAC

MODEL:

DATE: Nov. 15, ’96
PAGE: 1 of 1

AD-1

2. Smearing on copies

3. Dirty Background

4. SC 393

Causes :

1. The developer supply level in the development unit does not become uniform until
after about 30 seconds of mixing after setting the PCU.

2. The Q/M (charged level) of the developer does not become stable until after
running 20 A3 or DLT copies.

3. The detection of the TD sensor is unstable until the developer supply level in the
development unit becomes uniform, causing excessive toner supply.

Measures :

1. Before making copies, perform the TD Sensor Initial Setting by using SP Mode
2-801. Refer to page 4-9 of the Service Manual.

2. After completing the TD Sensor Initial Setting, make 20 copies of A3 or DLT size.

Technical Bulletin No. RTB-005

SUBJECT: Operation Procedures for the transmission of fax messages

while making memory copies.

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

Instruct the customers to take the following steps to transmit facsimile mail
while making memory copies.

Problem :

Multiple copying with the memory copy operation will be suspended under the
following sequence when transmitting fax messages while copying.

1. Place the facsimile original in the document feeder.

for

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FROM: 2nd. Field Information Dept. QAC

MODEL:

DATE: Nov. 15, ’96
PAGE: 1 of 1

AD-1

2. Switch the mode to facsimile transmission.

Reason :

The AD-1 recognizes the original insertion into the feeder as a copying operation, so it
then suspends the current memory copying.

Measure :

Instruct the customers to switch the mode to facsimile first, then place the original in
the document feeder.

Technical Bulletin No. RTB-006

SUBJECT: Use the face-up tray for copying on thick paper, post cards,

labels , or OHP sheets.

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

Instruct customers to use the face up tray when copying on thick paper (81 to
157 g/m2 , or 21 to 42 lbs), post cards, labels, or OHP sheets.

Note : This instruction is not written in the Operating Instructions. Instruct your

customers at installation or at the next visit.

Problem :

When copying those kinds of paper using the face down tray, paper jams occur.

for

Revision of service manual
Information only
Other

FROM: 2nd. Field Information Dept. QAC

MODEL:

DATE: Nov. 15, ’96
PAGE: 1 of 1

AD-1

Technical Bulletin No. RTB-007

SUBJECT: SC900 (Total Counter Error) caused by blown fuse

(fuse #5 on the PSU)

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

When SC900 (Total Counter Error) occurs, check whether or not fuse #5 of the
PSU has blown out. Add "Fuse #5 of the PSU has blown out" into your service
manual as one of the possible causes of SC900.

Fuse #5 is located at the upper left of the PSU board. The second of the 3 fuses
is fuse #5.

Caution :

The fuse may be blown out if the connector of the paper tray unit is disconnected
while the power switch is on. Be sure to turn off the power switch before
disconnecting the connector.

for

Revision of service manual
Information only
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FROM: 2nd Field Information Dept. QAC

MODEL:

DATE: Nov. 30, ’96
PAGE: 1 of 1

AD -1

Technical Bulletin No. RTB-008

SUBJECT: Cautions when setting up the copier at your office DATE: Nov. 30, ’96

PAGE: 1 of 1

PREPARED BY: T. Itai
CHECKED BY: S. Fujii

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

Before installing the AD-1 at the customer’s office, please take the following
precautions.

1. Perform TD Sensor Initial Setting after removing the development unit sealing
tape. Do not transport the copier without performing TD sensor initial setting
when the seal is removed.

2. Do not set the toner bottle into the holder. Install it at your customer’s office.

3. When you run test copies, make sure to run less than 10 copies. These test
copies should not be high density copies, such as solid black copies.

for

Revision of service manual
Information only
Other

FROM: 2nd Field Information Dept. QAC

MODEL:

AD-1

Reason :

If the precautions listed above are not complied with, toner will be supplied before
the Q/M (charge level) of the developer has stabilized, causing excessive toner
supply and toner scattering may occur due to vibration during transportation.

If the precautions have not been followed,

-Clean up the scattered toner.

-You may find dirty background copies for several pages.