MX-2640N, MX-2640NR, MX-2640FN, MX-3140N, MX-3140NR, MX-3140FN, MX-3640N, MX-3640NR, MX-3640FN (serv.man156). FIELD SUPPORT FOR MODIFICATION OF A NON-RESPONDING HOME KEY DUE TO STATIC ELECTRICITY. — Sharp Copying Equipment Technical Bulletin (repair manual)

Model
MX-2640N MX-2640NR MX-2640FN MX-3140N MX-3140NR MX-3140FN MX-3640N MX-3640NR MX-3640FN (serv.man156)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
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Type
PDF
Document
Technical Bulletin
Brand
Device
Copying Equipment / FIELD SUPPORT FOR MODIFICATION OF A NON-RESPONDING HOME KEY DUE TO STATIC ELECTRICITY.
File
mx-2640n-mx-2640nr-mx-2640fn-mx-3140n-mx-3140nr-mx.pdf
Date

View Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man156) Technical Bulletin online

 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
1/2 
Date:  
28
th
 April 2014 
Model:  
See below 
Ref.:  
CCE1296 
Colour:  
 
White 
Page:  
1 of 2 
TECHNICAL BULLETIN 
FIELD SUPPORT FOR MODIFICATION OF A 
NON-RESPONDING HOME KEY DUE TO STATIC 
ELECTRICITY 
 
1. Model Name: MX-2640N/3140N/3640N, 
MX-4140N/4141N/5140N/5141N 
 
2. Symptom: 
Home key on the operation panel which is manufactured until August, 2013 production   
 
 
may stop responding if static electricity exceeding the assumed amount is discharged   
 
 
because it may cause damage on Home key PWB on rare occasions. 
 
 
This problem does not occur to Operation panel which have been manufactured since   
 
 
September, 2013 production because coating on Operation ring on the Operation panel   
 
 
has been changed from electrically-conductive plating to electrically non-conductive silver   
 
 
coating to improve productivity 
 
3. Field Action: 
For those manufactured until August, 2013, please add two types of conductive tape so   
 
 
that static electricity is discharged to a metal plate. 
 
 
Perform continuity test of Operation ring using a tester during service or maintenance.   
 
 
Once conduction has been observed, it is recommended to implement the measure   
  described 
above. 
 
 
(Refer to the next page for example of where to check during the continuity test.) 
 
 
Refer to the accompanying sheet for other information such as reference point to stick   
 
 
conductive tape (1) and (2). 
 
 
We are sorry to trouble you, but please contact the nearest service base for Sharp and   
 
 
get conductive tape (1) and (2). 
 
 
 
- Conductive tape (1) 
 
 
- Conductive tape (2) 
 
 
 
 
 
- Location of conductive tape 
 
 
 
 
 
 
Conductive tape (2) 
Conductive tape (1) 
Operation ring 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
2/2 
 
The points to perform continuity test (Example) 
 
      Inside Operation ring (where the color is silver) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Apply a tester to perform continuity test. 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
2/2 
 
The points to perform continuity test (Example) 
 
      Inside Operation ring (where the color is silver) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Apply a tester to perform continuity test. 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
2/2 
 
The points to perform continuity test (Example) 
 
      Inside Operation ring (where the color is silver) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Apply a tester to perform continuity test. 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
2/2 
 
The points to perform continuity test (Example) 
 
      Inside Operation ring (where the color is silver) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Apply a tester to perform continuity test. 

Download Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man156) Technical Bulletin

Here you can view online or download Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man156) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man156) Copying Equipment. Information contained in Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man156) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).