MX-M266N, MX-M316N, MX-M356N (serv.man115). PCQ (water droplet shaped marks on copies). — Sharp Copying Equipment Technical Bulletin (repair manual)

Model
MX-M266N MX-M316N MX-M356N (serv.man115)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
135.39 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Copying Equipment / PCQ (water droplet shaped marks on copies).
File
mx-m266n-mx-m316n-mx-m356n-sm115.pdf
Date

View Sharp MX-M266N / MX-M316N / MX-M356N (serv.man115) Technical Bulletin online

 
Sharp Business Systems UK Plc., Document Systems Support
 
Date:  
11
th
 December 2015 
Model:  
See below 
Ref.:  
DCE967 
Colour:  
 
White 
Page:   
1 of 2 
TECHNICAL BULLETIN 
 
 
 
 
 
 
 
 
 
1. Model Name: 
MX-M266N/M316N/M356N 
 
2. Phenomenon   Lack of transfer voltage depending on the paper feed conditions may 
generate water-drop like images on both white and solid-colored background. 
 
3. Conditions 
This problem occurs when all these conditions are met. 
1. Thin plain paper is used. 
2. Paper orientation: Portrait (feeding A4R, B5R paper etc.) 
3. Second side of duplex printing 
4. The area coverage ratio on both front and back side is around 100%. 
5. The machine is installed under high temperature/ high humidity 
environment. 
 
4. How to handle  1. Change the paper orientation from Portrait to Landscape. 
2. Increase Transfer current (because this problem occurs once transfer 
voltage falls below particular level.) 
Go into Sim 8-6 and increase the current value of "E:TC PLAN DPX N1" 
by 8 counts (E.g. Change from "22" to "30".) 
*Mottle may appear as adverse effect. It is important to adjust this value 
while checking the image. 
3. Replace Transfer roller (because rubber may be degrading). 
*The item "2." or "3." above should be implemented only when the 
problem remains after trying item "1.".   
 
 
 
 
HOW TO HANDLE WATER-DROP LIKE 
DEFECTIVE IMAGES 
Sharp Business Systems UK Plc., Document Systems Support
 
- Sample defective image 
  Water-drop like pattern on white background 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Paper feed direction 
Second side of duplex printing
Page of 2
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Download Sharp MX-M266N / MX-M316N / MX-M356N (serv.man115) Technical Bulletin

Here you can view online or download Sharp MX-M266N / MX-M316N / MX-M356N (serv.man115) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp MX-M266N / MX-M316N / MX-M356N (serv.man115) Copying Equipment. Information contained in Sharp MX-M266N / MX-M316N / MX-M356N (serv.man115) 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).