R-8740 (serv.man25). Noise from the high voltage circuit area during start up — Sharp Home Appliance Technical Bulletin (repair manual)

Model
R-8740 (serv.man25)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
11.86 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Home Appliance / Microwave Oven / Noise from the high voltage circuit area during start up
File
r-8740-sm25.pdf
Date

View Sharp R-8740 (serv.man25) Technical Bulletin online

MWO2001 11 02
Month of Issue:   November 2001
        
Classification: 
White
MICROWAVE TECHNICAL BULLETIN
Page 1 of 1
Sharp Electronics (UK) Limited
Reference
Revision   
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
 Red – Carry out on all units
MODELS
R8740M
SYMPTOM Noise from the high voltage circuit area during start up.
CAUSE
Component tolerance variance on the control PWB
ACTION
Change the relay timing in the software as follows:
1.  Turn the mains on and ensure that the door is shut.
2.  Press 'time reduce' once, followed by 'convection' once, followed by 'microwave'
twice - all within a two second period.
3.  The code of 5264 should appear in the display.
4.  Overwrite this by entering 5277.
5.  Press 'memory' key.
6.  Confirm that the checksum shown is '11'.
7.  Turn off the power to.
Display

Download Sharp R-8740 (serv.man25) Technical Bulletin

Here you can view online or download Sharp R-8740 (serv.man25) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp R-8740 (serv.man25) Microwave Oven. Information contained in Sharp R-8740 (serv.man25) 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).