Page 1
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.
Page 2
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)
Page 3
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.)
Page 4
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]
Page 5
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
Page 6
Technical Bulletin No. RTB-002
SUBJECT: Clear counter Problem (SP98) DATE: March 31, ’94
PAGE: 2 of 2
[Required Action]
The following procedure is required when the SP98 is performed with machines which
have the old ROM (P/N A1215343B).
1. Fill the oil tank with silicone oil until the "max" line.
2. Empty the toner collection bottle.
3. Turn the main switch off and on.
4. Select SP83 and enter "1" to clear the memory counters for the toner overflow detection.
NOTE: Although SP98 is performed with the old ROM (P/N A1215343B), SP91 (toner end
counter for toner over flow detection) does not clear. Therefore, it is necessary to
perform SP83 after disposing of the toner in the used toner tank.
Page 7
Technical Bulletin No. RTB-003
SUBJECT: Add Toner Indicator does not turn off DATE: May 31, ’95
PAGE: 1 of 3
PREPARED BY: N. Kaiya
CHECKED BY: M. Iwasa
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
Problem
The Add Toner indicator does not turn off even after replenishing the toner cartridge.
Estimated Cause
So far, we do not have sufficient field information to identify the real cause of the problem.
However, we have reviewed the control software of the machine and found the following
estimated cause;
In order to prevent the customer from resetting the toner end condition by simply opening
and closing the front door, the CPU checks Vsg/Vsp after it detects that the front door
haws been opened and closed. If Vsg is around 2.5V, the CPU may detect Vsg as Vsp,
and the toner end condition is not recovered.
Revision of service manual
Information only
Other
FROM: 2nd Technical Support Section
MODEL:
KITE (A121)
Countermeasure
The toner end recovery procedure in the software has been modified. Vsp checking after
toner replenishment is no longer performed. However, Vsg is still checked, and if it is less
than 2.5V, the CPU determines that the detected data is abnormal. It then changes from
detect supply mode to fixed supply mode. The amount of toner added is determined by
the data in SP Mode No. 32.
Please note that if Vsg is around 2.5V, most probably the ID sensor is dirty and needs
cleaning. In addition, it is necessary to find out and remove the reason for the ID sensor
getting dirty.
Action in the field
This problem may happen only if Vsg is around 2.5V. Therefore it is necessary to check
for the following to make sure that Vsg will be maintained in a good range.
1. Check for high toner density or toner scattering. If necessary, follow the troubleshooting
procedures in the service manual.
2. If the meter reading is reaching the PM cycle, perform PM.
3. Clean the ID sensor and adjust Vsg to 4.0 ± 0.2V.
4. Replace the Main Board ROM (P/N A1215343) to suffix G.
Page 8
Technical Bulletin No. RTB-003
SUBJECT: Add Toner Indicator does not turn off DATE: May 31, ’95
PAGE: 2 of 3
Production Machines
New ROMs are used from the following serial numbers.
S/N
NOTE: In order for us to further investigate this problem, please fill in the attached
questionnaire and return to us in case you meet this problem in the field.
CODE SERIAL NUMBER
A121-10 155502XXXX
A121-11 004502XXXX
A121-12 1545010001
A121-19 A3575030001
A121-20 1535010001
A121-29 A3574120623
A121-50 8395030001
Page 9
Technical Bulletin No. RTB-003
SUBJECT: Add Toner Indicator does not turn off DATE: May 31, ’95
PAGE: 3 of 3
FT4495
QUESTIONNAIRE OF ADD TONER INDICATION STAYS ON.
DISTRIBUTOR’S NAME: COUNTRY:
REPORTED BY: CUSTOMER’S NAME:
MACHINE SERIAL No.: METER READ:
REPORT DATE: OCCURRENCE DATE:
MAIN BOARD ROM No.:
1. During the toner recovery, did the main motor and toner supply clutch turn on?
YES NO
2. What are the Vsp/Vsg values while the toner end indication is on? (Check with SP55)
Vsp: (not pressing the "0" key in SP55)
Vsg: (pressing the "0" key in SP55)
3. Did you have a charge leakage problem before?
YES NO
Please check the answers to the following questions with your customers.
6. Whether the toner cartridge still has toner or not when the toner indication is on?
Yes, it has toner. No, it has not.
7. Did you install a new toner cartridge for toner end recovery?
YES NO
8. Did the customer add toner at the "toner near end" or "toner end" condition?
"Toner near end" "Toner end"
9. Is the toner a Ricoh product? (The toner used in the machine which has a problem.)
YES NO
(Ricoh Lot No. ) (Name of the o ther manu facturer : )
Page 10
Technical Bulletin No. RTB-004
SUBJECT: Improper Used Toner Collection DATE: May 31, ’95
PAGE: 1 of 2
PREPARED BY: N. Kaiya
CHECKED BY: M. Iwasa
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
Problem
Used toner builds up in the front side of the toner collection bottle. Used toner is tightly
packed in the neck of the toner collection bottle. This may result in damage to the toner
collection coil. The problem appears before the PM cycle when the technician has to
empty the used toner collection bottle.
Cause
Vibration of the toner collection bottle is not sufficient. When the toner collection bottle is
moved from front to rear by the vibration mechanism, the rear side of the bottle is pushed
against the cushion (P/N A1211077) which is provided to absorb the vibration noise. The
amount of bottle vibration is slightly different from machine to machine depending on the
position of the cushion and its condition. In the worst case, the amount of collection bottle
vibration is not sufficient to keep the used toner in the bottle level.
Revision of service manual
Information only
Other
FROM: 2nd Technical Support Section
MODEL:
KITE (A121)
Action in the Field
Attach a newly prepared 2 mm thick spacer (P/N A1213670) to the rear of the toner
collection bottle. By adding this seal, the bottle will be pushed more strongly against the
spring (P/N AA063119), and the amount of bottle vibration will be increased.
Procedures
1. Remove the toner collection bottle.
2. Remove the used toner inside the toner collection bottle.
3. Clean the rear side of the toner collection bottle.
4. Attach the seal to the rear side of the toner collection bottle as shown in the diagram.
5. Reinstall the toner collection bottle.
6. Hold the neck of the bottle and shake it back and forth several times to loosen the
movement of the toner collection bottle.
Page 11
Technical Bulletin No. RTB-004
SUBJECT: Improper Used Toner Collection DATE: May 31, ’95
PAGE: 2 of 2
Spacer - Collection Bottle
(P/N A1213670)
For the cut-in serial number, please refer to MB No. 13.
Page 12
Technical Bulletin No. RTB-005
SUBJECT: Toner Overflow Sensor DATE: May 31, ’96
PAGE: 1 of 2
PREPARED BY: N. Kaiya
CHECKED BY:
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
This RTB explains how to install the add toner overflow sensor to detect the toner
collection bottle full condition.
Necessary Parts
Part
Number
52153818 Toner Overflow Sensor Assembly 1
11050120 Wire Clip 1
11050196 Harness Clamp 3
A0096001 Harness - Toner Overflow Sensor 1
Description Quantity
Revision of service manual
Information only
Other
FROM: 1st Field Information Dept. QAC
MODEL:
Kite
A121
Procedure
1. Remove the Toner Collection Bottle Cap from the Toner Collection Bottle and
attach the Toner Overflow Sensor to the Toner Collection Bottle.
2. Install the Wire Clip and Three Harness Clamps as shown in the figure.
3. Route the Harness - Toner Overflow Sensor as shown in the figure.
4. Set SP Mode no.81 to 1
Note : SP Mode NO.81 changes the method of detecting the toner collection bottle
full condition. When the setting is "0", the toner collection bottle full condition
is detected by copy quantity and number of toner end conditions. When the
setting is "1", the toner collection bottle full condition is detected by the toner
overflow sensor.
Page 13
Technical Bulletin No. RTB-005
Toner Overflow
Sensor Ass’y
(P/N 52153818)
SUBJECT: Toner Overflow Sensor DATE: May 31, ’96
PAGE: 2 of 2
Wire Clip
(P/N 110501 20)
Harness Clamp
(P/N 11050196)
Harness - Toner
Overflow Sensor
(P/N A0096001)
Page 14
Technical Bulletin No. RTB-006
SUBJECT: Oil End Sensor DATE: May 31, ’96
PAGE: 1 of 1
PREPARED BY: N. Kaiya
CHECKED BY:
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
This RTB explains how to install the oil end sensor to detect the oil end condition.
Necessary Parts
Part Number Description Quantity
52095320 Oil End Sensor 1
52154411 Spring Plate 1
04340080W Tapping Screw - M4x8 1
Procedure
1. Install the oil end sensor on the silicone oil bottle as shown in the figure.
2. Place the spring plate on the oil end sensor and fix it with the tapping screw M4 - 8.
Revision of service manual
Information only
Other
FROM: 1st Field Information Dept. QAC
MODEL:
Kite
A121
3. Connect the oil end sensor connector.
4. Set SP mode no.82 to 1.
Note : SP Mode NO.82 changes the method of detecting oil end conditions. When
the setting is "0", the oil end condition is detected by copy quantity. When the
setting is "1", the oil end condition is detected by the oil end sensor. After
installing the oil end sensor, if the SP mode is not changed to 1, oil end
detection will not be performed.
Tapping Screw
(P/N 043400 80W)
Spring Plate
(P/N 521544 11)
Oil End Sensor
(P/N 52095320)
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