Date: Apr. 21, 1993
COPIER : SF-2022
No. : SP-1567
TROUBLESHOOTING PAPER SKEW WITH A
NEW PS SPRING
1.Model name: SF-2022/2027
2.General: It may probable to evoke paper to skew owing to a load imbalance caused by
the way the PS spr ing installed. To correct it, c hange is made to the shape of
the PS spring.
3.Cause: Because the spring coil is t oo short when the PS s pring was installed on the
transport baseplate or a difference in the shape of the PS spring between front
and rear, an imbalance might be caused for the load across springs.
4.Description: The coil length of the PS spring is changed from 9mm to 20mm with their
shapes changed to the same to have ev en load.
* Described in the following are changes observed three times since the first
production unit to stabi lize the P S spring load.
Front side
Rear side
Description in Parts Guide
PS spring
Same for the front and rear.
MSPRT1646FCZZ
Through first production to
August 1992
PS spring B9F
Load 700 10%
MSPRT2022FCZZ
PS spring B9
Load 700 10%
MSPRT2018FCZZ
+
–
Round hook
+
–
Through September to
mid-October 1992
PS spring B9FK
Load 60 0 40g
MSPRT2086FCZZ
PS spring B9RK
Load 60 0 40g
MSPRT2087FCZZ
+
–
+
–
Ground
connection
Right angle
hook
Through mid-October 1992
and on
PS spring N
Load 68 0 40g
Same on front and rear
MSPRT2100FCZZ
+
–
SHARP CORPORATION Reprography Division
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Green
C
NOTE: Because the latest PS spring is longer , a PS spring hol ding hole is
newly provided in the rear side of the transport baseplate. Note that the
new PS spring cannot be installed on the old type baseplate as it does
have the hole. Both t he old and new types will be available as servic e
parts. Although there is no parts code changed for the transport
baseplate, the hole for the new PS spring installation had been provided
since September 1992 for the US version and mid-September for other
local versions.
5.Action: Since mid-October 1992.
[New PS spring installation procedure]
Upper PS roller
PS roller
Transport baseplate
Bushing for the PS roller
PS spring N
Bushing for the
upper PS roller
PS clutch
The one with
a wider space
must be on
the lower side.
PS roller
➀ Fasten the side of the spring having a wider
span to the elongated hole on the lower side
of the transport baseplate.
NOTE-1: The PS spring must be installed
from the rear side first.
NOTE-2: Use the PS spring in the same
bag which provided for the same
load.
➁ Press it to the upper PS roller busing
with your fingertip, slightly expanding
the spring.
NOTE-1: Do not expand it too much.
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Upper PS roller bushing
➂ Put the upper side hook inserted into the
elongated hole in the transport baseplate
using the flat tip screwdriver, while the
spring pressed with your fingertip.
For your reference
(Put the top of the hook engaged
firmly and put it in from side.)
➃ Using the flat tip screwdriver, push in the upper hook into the elongated hole from side.
➄ In the same way, install the spring on the front side.
➅ Manually rotate the PS roller for a several times to set it in place.
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[Old type PS spring installing procedure, front side]
Front side
MSPRT2087FCZZ
➀
➂
Insert the ground of the PS spring B9F into the elongated hole on the
paper exit side.
Ground part
Put the ground over the PSroller shaft and tilt it towards the rear side.
➁
Insert the ground side hook of the spring into the elongated hole.
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➃
➄
Twist the ground part and set it that it may firmly contact to the metal and
the PS roller shaft bushing.
NOTE: Do not deform the ground part.
Put the hook on the other side engaged into the elongated hole on the
paper feed side.
NOTE: Do not deform the spring and the hook.
* Although MSPRT2086FCZZ on the rear side does not have the ground part, it must be installed in the
same way.
Ref.
No.
Model
name
Version P/G No.
18 -60
Current parts New parts
Parts code Parts code
MSPRT1646FCZZ
MSPRT2018FCZZ AC PS spring B9 1
Price
rank
Parts name
Effective
time
MSPRT2022FCZZ AC PS spring B9F 1
SF-2022
2027
18 -60 MSPRT2018FCZZ MSPRT2087FCZZ AF PS spring B9RK
All
18 -60 MSPRT2022FCZZ MSPRT2086FCZZ AF PS spring B9FK
18 -60 MSPRT2087FCZZ MSPRT2100FCZZ AD
18 -60 MSPRT2086FCZZ MSPRT2100FCZZ AD
PS spring N
Since
midOctober
1992
<Inter change>
1. Interchangeable. 4. Not interchangeable.
2. C urr e nt t y pe c a n be u s ed i n place of n ew type.
New ty pe cann ot be us ed in place of curr ent type .
3. C urr e nt type c a nn ot b e us e d in p l ac e o f ne w ty p e.
New t y pe c a n be u s ed i n pl a ce of cur ren t ty p e.
Parts m ar ke d wi th “ ” is im p ort an t fo r m ain ta in i ng the sa fe ty of the s e t. B e sur e t o rep l ac e t he se pa r ts with
!
5. Interc ha ng ea ble i f r ep l ace d wi th s a m e typ es of
relate d pa r ts in us e.
6. Others.
specified ones for maintaining the safety and performance of the set.
Interchangeability
3
4
Note
Rear
side
Front
side
Rear
side
Front
side
Old type
PS
spring is
also
available.
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