Date: Nov. 10, 1995
COPIER : SF-2050
1. MEASURES TO IMPROVE THE PERFORMANCE OF THE SEPARATOR PAWL OF THE PAPER EXIT
REVERSING UNIT.
2. IMPROVEMENT OF THE PERFORMANCE OF THE MAIN MOTOR BY INCREASING THE LOAD OF
THE DRIVE LINE.
3. MEASURES TO PREVENT ABNORMAL NOISE FROM THE PAPER DUST REMOVAL ROLLER.
4. MEASURES TO PREVENT JAMS IN THE CURL CORRECTION UNIT.
No. : SP-1954
1. Measures to improve the performance of the separator pawl of the paper
exit reversing unit.
1.Model name: SF-2050.
2.General: A mylar and a sheet have been added to improve the paper flow performance in the
paper exit reversing unit.
Furthermore, the distinction of the upper paper delivery roller (P/G -1) which
20
previously had been divided into Japanese domestic use and Overseas use has been
simultaneously changed with the changed described above. The distinction of the upper
paper delivery roller is now divided into the AB line and the Inch line.
AB series
Paper delivery roller B9J (NROLP0937FCZ1)
Color:Black Q’ty: 3
Drop sheet Drop sheet
Standard Standard
1
±0.5
Standard Standard
Drop sheet
±0.5±0.5
1
StandardStandard
±0.5
StandardStandard
SHARP CORPORATION Reprography Division
1/4
Green
C
Inch series
Upper paper delivery roller (NROLP0923FCZZ)
Color:White Q’ty: 3
Drop mylar
3.Action: From the start of 1995 April production.
Standard
±0.5
Standard
±0.5
Standard
Standard
Drop mylar
2. Improvement of the performance of the main motor by increasing the load of
the drive line.
1.Model name: SF-2050.
2.General: There is a possibility of damage occurring to the IC in the main motor, caused by an
increase in the load of the drive line. To alleviate this problem, the prevention measure
described below has been carried out.
3.Description: The shape of the radiant heat plate of the main motor PWB has been changed.
Note: The change described above has been carried out from 1995 mid-September
production, but a temporary measure was carried out from the start of mass production,
which consisted of changing the shape of the radiant heat plate of the main motor PWB
in a later process.
4.Action: From 1995 mid-September production.
2/4
3. Measures to prevent abnormal noise from the paper dust removal roller.
1.Model name: SF-2050.
2.General: Abnormal noise sometimes occurs from the paper dust removal roller in the fusing unit.
To alleviate this problem, the prevention measure described below has been carried out.
3.Description: A change in the dust removal roller unit has been carried out by attaching a scraper
tooth spacer between the fusing CL scraper and the roller movable bracket. This
change has been carried out to prevent abnormal noise from occurring.
Scraper spacer
Wide
Narrow
Roller movable bracket
Fusing CL scraper
Screw
4.Action: From the start of 1995 April production.
4. Measures to prevent jams in the curl correction unit.
1.Model name: SF-2050.
2.General: Jams sometimes occur in the curl correction unit at the location marked with an “x” in
the figure shown below. To alleviate this problem, the prevention measures described
below have been carried out.
3.Description: Temporary measures:
Temporary parts (curl plate spacers) have been attached to increase the distance
marked with an “A” in the figure shown below, to prevent jams from occurring.
Permanent measures:
To prevent jams from occurring, the distance marked with an “A” in the figure shown
below has been increased by changing the angle of the section in the upper reversing
PG marked with an “x” in the figure shown below. (In accordance with this change, the
temporary parts described above are no longer necessary.)
3/4
Gate
Direction of
copy paper flow
×
Attached
temporary parts
Upper reverse PG
4.Action: Temporary measures → From 1995 mid-June production.
Permanent measures → From the start of 1995 September production.
Ref.
Model
No.
1
SF-2050
2
3
4
<Interchange>
1. Interc ha ng ea bl e. 4. N ot i nt er ch an ge ab l e.
2. Current type can be used in place of new type.
New type cannot be used in place of current type.
3. Current type cannot be used in place of new type.
New type can be used in place of current type.
Parts marked with “ ” is important for maintaining the safety of the set. Be sure to replace these parts with
specifie d on es fo r m ain taining t he s a fe ty an d pe r fo rma nc e o f th e s et .
name
Version P/G No.
AB
series
20 —
Inch
series
AB
series
20 -1
Inch
series
13 -20 PMOTP0769FCZZ PMOTP0769FCZ1
17 CROLP1107FC31 CROLP1107FC32
All
27
!
Current parts New parts
Parts code Parts code
PSHEP3874FCZZ AB Drop sheet
PSHEP3928FCZZ
NROLP0937FCZ1
( For Japan)
NROLP0923FCZZ
(For overseas )
— PSPAZ0686FCZZ AG
PGIDH1618FCZZ PGIDH1618FCZ1 AR
NROLP0937FCZ1
(AB series )
NROLP0923FCZZ
(Inch series )
Price
rank
AC
BR
5. Interchangeable if replaced with same types of
relate d parts in use .
6. Others .
Parts name
Drop mylar
Delivery roller
upper
Main motor N
Paper dust
removal roller
unit
Curl plate
spacers
Upper reverse
paper guide
Effec-
tive
time
1st lot
’95/4
1st lot
’95/9
1st lot
’95/4
Mid
’95/6
1st lot
’95/9
Inter-
change-
ability
6
3 Q’ty: 3
1
6 Qty: 2
3
Note
Q’ty: 2
4/4
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