SHARP STE001 Technical Report
Date: May. 22, 1995
COPIER : SF-2014
No. : STE-001
PREVENTING THE “TONER LOW ” LAMP
FROM TURNING ON.
1.Model name: SF-2014/21 14/2214
Z-800, SN-1420/1430 (U.S. Version)
2.Genaral: Occasionally, the “Toner Low” lamp may go on although there is still toner in the
cartridge. This may be due to the “scrape off sheet”, which is affixed to the
supplementary toner feed in the toner hopper, rising too far up (reducing the angle of an
input lever) and causing the toner level in the hopper to drop.
3.Description: Because of strict quality control and thorough visual checks, this problem should not
occur in machines produced after November 1994. Some improvements have been
carried out in the shape and quality of the sheet and replacement should be carried out
on any machines produced previous to that date.
Scrape off sheet
(New)
R R
RR
Material PC
Toner hopper
(Old)
Material PET
<Items needed for the exchange of parts>
• Scrape-off sheet : PSHEP3756FCZ1
• Shutter : PSHT-0064FCZZ
Please prepare these in advance
<Procedure for changing the parts>
(1) Remove the toner cartridge from the toner holder in the developing unit.
(2) Remove the connector for the toner motor.
R
(3) Remove the four blue screws and take the cover off the DV Box as shown in Fig. 1, A.
lift the back portion of the frame slightly, and remove while turning the cover
clockwise around the point indicated by the triangle
SHARP CORPORATION Printing and Reprographic Supplies Division
1/4
Yellow
C
(4) Remove the 2 screws and remove the toner hopper unit from itUs cover as shown in
Fig. 1, B.
(5) Clean up any toner remaining in the unit.
(6) Remove the 2 screws and separate the toner hopper (No.14) from the toner holder
(No.8) as shown in Fig. 2, A.
(7) Draw the shafts and gears apart as shown in Fig. 2, B.
(Work can proceed without this being done, but there is a possibility that the shafts
and gears will come apart spontaneously later on)
(8) Peel off the “scrape-off sheet”, which is affixed to the supplementary toner feed, and
remove the shutter, as shown in Fig. 2, C.
(9) Peel the double sided tape off of the top of the toner hopper.
(Be careful not to allow any foreign particles to enter the toner hopper)
(10) Clean the affixing portions of the Rscrape-off sheetS and the shutter with alcohol.
Fig. 1
Toner hopper unit
Cover
Fig. 2
Connector
Scrape-off sheet
2/4
(11) Af fix the new sheet, being careful to match up A’, B’ on the sheet to the standard
A,B on the toner hopper.
(Press down firmly when affixing the sheet)
• As it is difficult to fix the front of the sheet to the convex portion of the screw unit
(No.17), it is preferable to affix the front of the sheet to the concave portion of the unit.
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