MX-6500N, MX-7500N (serv.man119). REMEDY FOR FLIPPING OF PRIMARY TRANSFER CLEANING BLADE AND NON-UNIFORM COLOUR DENSITY IN UNEVEN PITCH — Sharp Copying Equipment Technical Bulletin (repair manual)

Model
MX-6500N MX-7500N (serv.man119)
Pages
5 Few pages! See other manuals at the bottom of the first or last page.
Size
980.53 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Copying Equipment / REMEDY FOR FLIPPING OF PRIMARY TRANSFER CLEANING BLADE AND NON-UNIFORM COLOUR DENSITY IN UNEVEN PITCH
File
mx-6500n-mx-7500n-sm119.pdf
Date

View Sharp MX-6500N / MX-7500N (serv.man119) Technical Bulletin online

 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1412R3 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. Model Name: 
MX6500N – MX7500N, MX-750U1 
 
2. Description: 
The following parts in Primary transfer have been modified or added to remedy the flipping of  
 
 
 
primary transfer cleaning blade and non-uniform colour density in uneven pitch. 
 
 
Phenomena 
Countermeasure 
 Flipping of 1st transfer 
 cleaning blade 
Modification of 1st 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 
 Non-uniform colour 
 density in uneven pitch 
Doubling number of gear tooth for CL Brush idle gear 1/ CL 
Brush idle gear 2/ CL Brush drive gear/ 1st cleaner joint gear 
Note: When replacing the above gear from old to new, all the 
gears must be replaced simultaneously. 
Modification of tolerance for the diameter of a hole on Fly 
wheel drive pulley 
Modification of the shape of Fly wheel OD pulley 
 
REMEDY FOR FLIPPING OF PRIMARY TRANSFER 
CLEANING BLADE AND NON-UNIFORM COLOUR 
DENSITY IN UNEVEN PITCH
 
TECHNICAL BULLETIN 
 
Date:  
27
th
 January 2015 
Model:  
MX6500N – MX7500N 
Ref.:   
CCE-1412R3 
Colour:  
White 
Page:  
1 of 5 
 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1412R3 
 
 
 
 
1. Remedy for flipping of 1st transfer cleaning blade 
 
 
 
  - Modification of 1st Brush conductive bearing    - Modification of Conductive bearing 
 
 
 
 
 
 
 
  
 
    - Addition of Earth connection follower spring 
 
 
 
 
 
2. Remedy for ununiformed color density in uneven pitch 
 
  
 
 The number of the teeth on each gear (CL Brush idle gear 1/ CL Brush idle gear 2/ CL Brush  
 
  
 
 drive gear/ 1st cleaner joint gear) has been doubled. 
 
Part Name (Parts Code) 
 The number of teeth 
 before change 
 The number of teeth 
 after change 
 CL Brush idle gear 1N (NGERH2391FCZZ) 
14 
28 
 CL Brush idle gear 2N (NGERH2393FCZZ) 
14 
28 
 CL Brush drive gear N (NGERH2392FCZZ) 
12 
24 
 1st cleaner joint gear N (NGERH2390FCZZ) 
30 
60 
 
 
 
 
   CL Brush idle gear 1N    CL Brush idle gear 2N    CL Brush drive gear N    1st cleaner joint gear N 
 
 
 
 
 
 
 
 
 
 
  
 
 
Modification of tolerance for the diameter of a hole on Fly wheel drive pulley 
 
 
 
 
 
 
 
   
 
 
 
Modification of the shape of Fly wheel OD pulley 
 
 
 
 
 
 
 
Before  
 
 
After (Six ribs have been removed.) 
 
 
 
 
 
 
 
 
 
 
 A protrusion can be 
 found in new parts. 
Before: Black 
After: White 
Before: Black 
After: White 
No change in colour 
 The "H1" marking is  
 engraved to the new parts. 
 
Before: φ8 
 
After: φ8 
+0.05 
-0.03 
-0.08 
No change in colour 
 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1412R3 
 
- Location of CL Brush idle gear 1N, CL Brush idle gear 2N, CL Brush drive gear N and 1st 
Brush  conductive bearing (in 1st transfer cleaner) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CL Brush idle gear 2N 
CL Brush drive gear N 
CL Brush idle gear 1N 
 The 1st Brush 
 conductive bearing 
 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
 
CCE-1412R3 
 
- Location of 1st cleaner joint gear N, Conductive bearing and additional Earth  
connection follower spring (in 1st transfer unit 2) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Conductive bearing 
1st transfer unit 
 
1st cleaner joint gear N 
 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. 
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Here you can view online or download Sharp MX-6500N / MX-7500N (serv.man119) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp MX-6500N / MX-7500N (serv.man119) Copying Equipment. Information contained in Sharp MX-6500N / MX-7500N (serv.man119) service manual (repair manual) typically includes:

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