MX-6240N, MX-7040N (serv.man104). REMEDY FOR NON-UNIFORM COLOUR DENSITY IN UNEVEN PITCH, TONER DISPERSION AND FLIPPING OF PRIMARY TRANSFER CLEANING BLADE - Sharp Copying Equipment Technical Bulletin (repair manual)

mx-6240n, mx-7040n (serv.man104) technical bulletin
Model
MX-6240N MX-7040N (serv.man104)
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5 Few pages! See other manuals at the bottom of the first or last page.
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Technical Bulletin
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Device
Copying Equipment / REMEDY FOR NON-UNIFORM COLOUR DENSITY IN UNEVEN PITCH, TONER DISPERSION AND FLIPPING OF PRIMARY TRANSFER CLEANING BLADE
File
mx-6240n-mx-7040n-sm104.pdf
Date

Read Sharp MX-6240N / MX-7040N (serv.man104) Technical Bulletin online

 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1411 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. Model Name: 
MX6240N – MX7040N, MX-620U1 
 
2. Description: 
The following parts in primary transfer have been modified or added to remedy the  
 
 
 
Non-uniform colour density in uneven pitch, toner dispersion and flipping of primary transfer  
 
 
 
cleaning blade. 
 
 
Phenomenon 
Countermeasure 
 Non-uniform colour  
 density in uneven pitch 
Change in the gap between bosses on Transfer CL F plate 
from 12.1 mm to 11.97 mm. 
2   Toner dispersion 
Addition of urethane foams on both sides of the primary 
transfer cleaning sub blade 
Addition of ABS resin to the frame on the primary transfer 
cleaning sub blade 
 Flipping of primary    
transfer 
 cleaning blade 
Modification of primary Brush conductive bearing attached to 
the Transfer cleaning brush 
Modification of Conductive bearing attached to the 1st 
follower gum roller 
Addition of Earth connection follower spring to the 1st follower 
roller shaft 
 
 
REMEDY FOR NON-UNIFORM COLOUR DENSITY IN 
UNEVEN PITCH, TONER DISPERSION AND FLIPPING 
OF PRIMARY TRANSFER CLEANING BLADE
 
TECHNICAL BULLETIN 
 
Date:  
23
rd
 January 2015 
Model:  
MX6240N – MX7040N 
Ref.:   
CCE-1411 
Colour:  
White 
Page:  
1 of 5 
 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1411 
 
 
 
 
1. Remedy for ununiformed color density in uneven pitch 
The gap between bosses on Transfer CL F plate has been changed from 12.1 mm to 11.97 mm. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2. Remedy for toner dispersion 
Urethane foams and ABS resin have been added on both sides of 1st transfer cleaning sub blade. 
 
 
 
 
 
 
 
 
Before 
 
 
 
 
 
 
 
 
 
After 
 
 
 
 
 
   
 
 
How to distinguish new parts from old parts 
 
 
 
 
 
 
 
 
3. Remedy for flipping of transfer cleaning blade 
 
      
 
- Modification of 1st Brush conductive bearing 
 
- Modification of Conductive bearing 
 
 
 
 
 
 
 
 
 
     
 
 
 - Addition of Earth connection follower spring 
 
 
 
 
 
 
 
 
 A protrusion can be  
 found in new parts. 
The "H1" marking is 
engraved to the new 
parts.
 
 Before:12.1 mm 
 After:11.97 mm 
 The "H1" marking is engraved to the new parts. 
 See opposite side of the location of newly added ABS resin. 
Urethane foams have been added here. 
ABS resin has been added to the frame section. 
 A protrusion can be  
 found in new parts. 
 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1411 
 
- Location of Transfer CL F plate, 1st transfer cleaning sub blade, and 1st Brush conductive 
bearing (in 1st transfer cleaner) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Transfer CL F plate 
 The 1st transfer 
 cleaning sub blade 
 The 1st Brush 
 conductive bearing 
 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1411 
 
 
 
 
- Location of Conductive bearing and additional Earth connection follower spring 
 
 
 
 (in 1st transfer unit 2) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Conductive bearing 
 Hook this end of Earth  
 connection follower spring  
 to the 1st follower roller shaft. 
 Hook this end to the boss  
 on the 1st transfer frame F. 
1st transfer unit 
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Here you can read online and download Sharp MX-6240N / MX-7040N (serv.man104) Technical Bulletin in PDF. MX-6240N / MX-7040N (serv.man104) technical bulletin will guide through the process and help you recover, restore, fix, disassemble and repair Sharp MX-6240N / MX-7040N (serv.man104) Copying Equipment. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.