Ricoh A121 Technical Bulletin FT4495

Technical Bulletin No. RTB-001

SUBJECT: Service Manual Correction DATE: March 31. ’94

PAGE: 1 of 4

PREPARED BY: S. Orita
CHECKED BY:

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

Please correct your service manual as follows:

1. Page 4-13

Incorrect

Mode No. Function Data

1 ADF

Destination

Revision of service manual
Information only
Other

Selects metric size or letter for Auto
Paper Select (APS) and Auto
Reduce/Enlarge (ARE) with ADF.

FROM: 2nd Technical Support Section

DF must be installed on the machine.
In APS and ARE functions with ADF,
the metric size and letter size do not
function together.

MODEL: KITE (A121)

0: Metric Size

1: Letter Size

Correct

1 ADF

Mode No. Function Data

Destination

Selects metric size or letter for Auto
Paper Select (APS) and Auto Reduce
Enlarge (ARE) with ADF.

1. DF must be installed on the
machine.

0: Metric Size

1 Letter Size
("1" is the default

for A121-12
machines.)

2. In APS and ARE functions with
ADF, the metric size and letter size
do not function together.

3. When "0" is selected, the data of
SP25 should be selected "0", "2",
"3", "4", or "5". When "1" is
selected, the data of SP25 should
be selected "1".

4. After changing the data from "0" to
"1" or from "1" to "0", the main
switch must be turned off and on.

Technical Bulletin No. RTB-001

SUBJECT: Service Manual Correction DATE: March 31, ’93

PAGE: 2 of 4

2. Page 4-14

Incorrect

Mode No. Function Data

°16

Correct

Count Up/Down Selects count up or count down 0: Up

1: Down

Mode No. Function Data

°16

Count
Up/Down

Selects count up or count down 0: Up

1: Down
("1" is the default

for A121-12
machines)

Technical Bulletin No. RTB-001

SUBJECT: Service Manual Correction DATE: March 31, ’93

PAGE: 3 of 4

3. Page 4-15

Incorrect

Mode No. Function Data

25 Original Size

Selection
(APS)

Selects the detectable original size in
APS or ARE modes without ADF.

0: A3, B4, A4, A4R
1: 11" x 17", 81/2" x 14", 11" x 81/2",
81/2" x 11"
2: A3, A4R, B5R, B5
3: A4R, 267 mm x 390 mm, 267 mm x
195 mm, 195 mm x 267 mm
4: B4, A4R, B5R, B5
5: A3, B4, A4, A4R, B5R, B5

Note

1. When "2", "3", or "4" is selected, the
positions of the original width and
length sensors should be changed.

2. When "5" is selected, the additional
original width sensor should be
added.

0 ~ 5

Correct

Mode No. Function Data

25 Original size

Selection (APS)

Selects the detectable original size in
APS or ARE modes without ADF.

0: A3, B4, A4, A 4R
1: 11" x 17", 8 1/2" x 14", 11" x 81/2",
81/2" x 11"
2: A3, A4R, B5R, B5
3: A4R, 267 mm x 390 mm, 267 mm x
195 mm, 195 mm x 267 mm
4: B4, A4R, B5R, B5
5: A3, B4, A4, A4R, B5R, B5

Note

1. When "2 , "3", or "4" is selected, the
positions of the original width and
length sensors should be changed.

2. When "5" is selected, the additional
original width sensor should be
added.

0 ~ 5
("1" is the default for

A121-12 machines.)

Technical Bulletin No. RTB-001

[I]

SUBJECT: Service Manual Correction DATE: March 31, ’93

PAGE: 4 of 4

4. Page 5-10 (1.7 SCANNER MOTOR REPLACEMENT)

Incorrect

10. Install the new scanner motor and reassemble.
NOTE: a) When installing the scanner motor, make sure the 3p connector is

positioned on the left-hand side.

b) Make sure that the scanner motor is positioned at the point where the drive

belt is tightened by the tension spring.

11. Examine the scanner drive wire for proper installation.

Correct (From step 1 to 9 are not changed)

10. Remove the motor cushion [H], pulley [I], and fly wheel [J] from the scanner motor [K]
(2 screws and 2 hexagon headless screws)

11. Install the new scanner motor and reassemble.
NOTE: a) When reinstalling the fly wheel, adjust the gap between the fly wheel and

the scanner motor to 3.5 ± 0.5 mm as shown.

b) When installing the scanner motor, make sure the 3p connector is

positioned on the left-hand side.

c) Make sure that the scanner motor is positioned at the point where the drive

belt is tightened by the tension spring.

12. Examine the scanner drive wire for proper installation.

[H]

3.5 ± 0.5 mm

[K]

[J]

Technical Bulletin No. RTB-002

SUBJECT: Clear Counter Problem (SP98) DATE: March 31. ’94

PAGE: 1 of 2

PREPARED BY: S. Orita
CHECKED BY:

CLASSIFICATION:

Action Required
Troubleshooting
Retrofit Information

[Phenomenon]

When SP98 (Clear Counters) is performed, the copy counters for SP90 (for toner overflow
detection) and SP92 (for oil end detection) are cleared.

NOTE: SP98 normally clears the following counters:

• SP100 (1st Feed Station Copies)

• SP101 (2nd Feed Station Copies)

• SP102 (3rd Feed Station Copies)

• SP103 (DF Originals)

• SP120 (Total Service Calls)

• SP121 (Optics Section Service Calls)

• SP122 (Exposure Lamp Service Calls)

• SP123 (Drum Thermistor Service Calls)

• SP124 (Fusing Section Service Calls)

• SP130 (Total Misfeeds)

• SP131 (Number of Misfeeds by Location)

Revision of service manual
Information only
Other

FROM: 2nd Technical Support Section

MODEL: KITE (A121)

[Cause]

Software problem

[Solution]

To prevent SP90 and SP92 from being cleared by SP98, the ROM has been changed
from P/N A1215343B to P/N A1215343C.

NOTE: P/N A12153 43B was installed from the start of mass-production.
The cut-in serial numbers for the new ROM (R/N A1215343C) are as follows:

Machine Code Cut-in Serial Number

A121-10 155403X XXX
A121-11 004403X XXX
A121-12 1544020 001
A121-19 A3574020001
A121-20 1534020 001
A121-29 A3574020037