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Page 1 of 3
RN SERIES TECHNICAL BULLETIN
Data Category Field Modification Trouble-Shooting General Information Safety Advice
DISTRIBUTED TO : All Distributors DATE : 12 April, 2001
MODEL : All "RN" models ISSUE C1-1422
: RNT-009 (revised) Our Ref.: C1-1442
NO.
Proceeding Grade Parts Compatibility Handling of Modified Parts
Action ASAP Compatible Free of Charge
Action as given below Conditionally Compatible Conditionally Chargeable
Action if required Not Compatible Chargeable
Refer in need Old Obsolete
SUBJECT: 021-18163-306 Bracket Ass'y; Blade Cushion
ED
638-90804-200 Washer; 8.5x21x0.4 REVIS
Brief:
The length of the four flanges on the "Bracket Ass'y; Blade Cushion" are made longer.
The two washers are made larger.
Reason:
The short flanges made side-way play (movement) on the "Bracket Ass'y; Blade Cushion", and sometimes
caused it to lock while making vertical movement.
At the same time, the small diameter washers were likely to get jammed in the sliding guide holes.
Modification:
The four flanges were extended 0.2 millimeters.
The outer diameter of the two washers were increased from 16 millimeters to 21 millimeters.
x x
Newly-registered Part The dimensions of the 4
Bracket Ass'y; Blade Cushion flanges, as indicated by
021-18163-306 Bracket Ass'y; Blade Cushion
"x" is extended from
638-90804-200 Washer; 8.5x21x0.4 3.8mm to 4.0mm.
(Extension of 0.2mm.)
Note: x x
When replacing the "Bracket Ass'y; Blade Cushion", a new piece of Blade Cushion needs to be put on the
part. The Blade Cushion is not modified, and the part number is not changed.
021-18163-306 Bracket Ass'y; Blade Cushion
Blade Cushion has self-sticking tape. 638-90804-200 Washer; 8.5x21x0.4
021-18161-001 Blade Cushion (B4 size)
021-18215-004 Blade Cushion; A4 (A size) View with the Blade Cushion attached.
021-18163-306 Bracket Ass'y; Blade Cushion (bottom view)
On the surface in which the Blade Cushion sticks, is a marking
line for use in positioning the A4 size Blade Cushion. The Blade Cushion should be attached in the
position flat against the bottom cut surface of
the Bracket Ass'y; Blade Cushion.
Issued By Overseas Technical Sec., Riso Kagaku Corp.
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RN SERIES TECHNICAL BULLETIN
ISSUE NO. : RNT-009 (revised)
Supplementary information: 638-90804-200 Washer; 8.5x21x0.4
Refer to the drawings and photographs below for the location of each part.
Existing metal bushings
Existing metal bushing
021-18163-306 Bracket Ass'y; Blade Cushion
021-18161-001 Blade Cushion (B4 size)
021-18215-004 Blade Cushion; A4 (A size)
638-90804-200 Washer; 8.5x21x0.4
IMPORTANT:
Make sure that the bent angle of the metal sheet is 90 degrees, other-
wise the bracket will be too tight or too loose on the assembly.
Bracket Ass'y; Blade Cushion
021-18163-306 Bracket Ass'y; Blade Cushion
021-18161-001 Blade Cushion (B4 size)
021-18215-004 Blade Cushion; A4 (A size)
638-90804-200
Washer; 8.5x21x0.4
021-18138-000 Main Frame Ass'y; M.-M.
021-18170-000 Sliding Plate Ass'y
Caution:
Before the modification of the "Bracket Ass'y; Blade Cushion" from the old 021-18163-004, 021-18163-101, and 021-18163-209 to
the new 021-18163-306 (the flanges are extended), tentative measure was made by adding small thin (approx. 0.2 mm or so thick)
washers on the three shafts of the "Bracket Ass'y; Blade Cushion", in front of the existing metal bushings. When using the new 021-
18163-306, these three small thin washers must be removed. Otherwise, the Bracket Ass'y; Blade Cushion becomes too tight, and
will affect its movement. For those machines with no small thin washers, this caution does not apply.
After replacement of the parts, check the movement of the unit by activating test mode No.230 with the master making unit
opened, and confirm that the assembly moves freely.
Issued By Overseas Technical Sec., Riso Kagaku Corp.
Page 3 of 3
RN SERIES TECHNICAL BULLETIN
ISSUE NO. : RNT-009 (revised)
021-18163-306 Bracket Ass'y; Blade Cushion
Application Serial No.
RN2130UI ........ 85130671 RN2100EP ...... 85150269 RN2050AW ..... 85250109
RN2030UI ........ 85221199 RN2000EP ...... 85200102 RN2130AS ...... 85140033
RN2000UI ........ 85430001 RN2150EP ...... 85080051 RN2030AS ...... 85210071
RN2150UP ...... 85070001 RN2050EP ...... 85270051 RN2180C ......... 85420031
RN2050UP ...... 85280001 RN2150AN ...... 85110011 RN2080C ......... 85410085
RN2150EN ...... 85090001 RN2050AN ...... 85240051
RN2050EN ...... 85260001 RN2150AW ..... 85100035
638-90804-200 Washer; 8.5x21x0.4
Application Serial No.
RN2130UI ........ 85130823 RN2100EP ...... 85150343 RN2050AW ..... 85250183
RN2030UI ........ 85221343 RN2000EP ...... 85200129 RN2130AS ...... 85140042
RN2000UI ........ 85430001 RN2150EP ...... 85080058 RN2030AS ...... 85210134
RN2150UP ...... 85070006 RN2050EP ...... 85270060 RN2180C ......... 85420031
RN2050UP ...... 85280025 RN2150AN ...... 85110011 RN2080C ......... 85410090
RN2150EN ...... 85090001 RN2050AN ...... 85240077
RN2050EN ...... 85260001 RN2150AW ..... 85100051
Note:
As can be seen from above serial number information charts, the modification of "021-
18163-306 Bracket Ass'y;Blade Cushion" was applied before the change in the "Washer"
size.
This means that there are machines with the new "Bracket Ass'y;Blade Cushion", but with
old small "Washers".
Issued By Overseas Technical Sec., Riso Kagaku Corp.