DOWNLOAD Sharp R-771M (serv.man3) Service Manual ↓ Size: 1.05 MB | Pages: 64 in PDF or view online for FREE

Model
R-771M (serv.man3)
Pages
64
Size
1.05 MB
Type
PDF
Document
User Manual / Operation Manual
Brand
Device
Home Appliance / Microwave Oven / For R771M Microwave Oven.
File
r-771m-sm3.pdf
Date

Sharp R-771M (serv.man3) User Manual / Operation Manual ▷ View online

55
CLEANING & MAINTENANCE
OVEN INTERIOR
Clean the microwave oven cavity, after
each use with a mild detergent solution on
a soft cloth, pay special attention to the
waveguide cover.
NOTE: When cleaning oven please ensure that
lower grill is cool.
Take care not to let soapy water drip through the small
holes in the oven walls and the cavity floor particularly
if the turntable and turntable support are removed.
Excess water spillage through these holes will cause
damage to the oven interior. It is important that the
door seals and sealing surfaces are kept clean at all
times, wipe regularly with a damp cloth.
Heat up your oven regularly by using both heating
elements, refer to NOTES on page 9.  Remaining
food or fat splashed on the oven interior can cause
smoke or a bad smell.
To prevent splashing, cover food wherever possible.
ACCESSORIES
Accessories should be washed in a mild washing-up
liquid solution and dried.  They are dishwasher safe.
You can lift the lower grill up for cleaning only. After
cleaning, gently push the lower grill down to its lowest
position (See the diagram below and on page 2).
OUTER CABINET
Wipe the outside cabinet with a mild detergent solution
• Do not allow grease or dirt to build up
on the door seals and adjacent parts
as this may prevent the door from
closing correctly and may cause a
leakage of microwaves. To clean use
a mild detergent  solution on a soft
damp cloth.
• Keep the waveguide cover clean at all times. 
If you leave grease or fat in the cavity, it may
overheat, smoke or even catch fire when 
next using the oven. Do not remove the
waveguide cover.
• Never use spray cleaners, oven buttons or
abrasive scourers as these damage the surface
of the oven.
• After Grill, Dual, Oven Pizza and Auto Cook
modes, the oven cavity, door, oven cabinet and
accessories will become very hot. Before
cleaning, make sure they have cooled down.
• Cleaning Lower Grill
The grill element moves upwards enabling the
bottom of the cavity to be wiped clean. Ensure 
it is cold before cleaning.
on a soft cloth. The control panel must be wiped clean
whilst the door is open, therefore inactivating the oven.
WARNINGS- 
Lower grill element
56
TROUBLESHOOTING
WARNINGS:
• It is hazardous for anyone other than
a competent person to carry out any
service or repair operation which
involves the removal of a cover which
gives protection against exposure to
microwave energy.
• The door seal stops microwave leakage during
oven operation, but does not form an airtight seal. It
is normal to see drops of water, light or feel warm
air around the oven door. Food with a high
moisture content will release steam and cause
condensation inside the door which may drip from
the oven.
• Repairs & Modifications: Do not attempt to
operate the oven if it is not working properly. 
• Outer Cabinet & Lamp Access:  Never remove the
outer cabinet. This would be very dangerous due
to high voltage parts inside which must never be
touched, as this could be fatal. As your oven is not
fitted with a lamp access cover, if the lamp fails,
do not attempt to replace the lamp yourself, call a
Service Technician appointed by SHARP. 
If you think the oven is not working properly there are
some simple checks you can carry out yourself before
calling an engineer. This will help prevent unnecessary
service calls if the fault is something simple.
Simply answer “YES” or “NO” to the following questions:
1. Does the oven lamp come on when you 
open the door? 
YES/NO
(Put half a cup of water in the oven, on the 
turntable and close the door. Select 100% HIGH 
and programme the oven to cook for 1 minute.)
2. Does the oven lamp come on?
YES/NO
3. Does the turntable rotate?
YES/NO
4. Does the cooling fan work? (Check by placing
your hand above the air-vent openings) YES/NO
5. After 1 minute does the "beep" sound? YES/NO
6. Is the water in the cup hot?
YES/NO
7. Set the grilling time for the upper and lower grill
for 3 minutes. At the end of 3 minutes do both the
grill elements become red?
YES/NO
If you answer “NO” to any question first check that the
oven is plugged in properly and the fuse has not
blown, if there is no fault with either, check the
troubleshooting chart on page 56.
NOTES:
The following cooking conditions should not cause concern:
1. If you cook food for more than the standard time 
(see chart opposite) at the same power level, the
oven’s safety mechanisms will automatically activate.
The microwave power level will be reduced and the
grill heating elements will turn on and off.
2. After Grill, Dual Grill, Pizza and Auto Cook modes,
the cooling fan will switch on for at least 5 minutes.  
During Grill, Dual Grill, Pizza and Auto Cook modes,
the cooling fan will also work when you press
STOP/CLEAR. You may feel air blowing out of the
air-vent openings.
COOKING MODE
Microwave 100% cooking
Grill cooking
Upper grill
Lower grill
Upper and lower grill
Dual cooking
Micro and upper grill
Micro and lower grill
STANDARD TIME
20 MINUTES
30 MINUTES
45 MINUTES
UPPER GRILL 15 MINUTES
LOWER GRILL 15 MINUTES
MICROWAVE 20 MINUTES
UPPER GRILL 15 MINUTES
MICROWAVE 20 MINUTES
LOWER GRILL 15 MINUTES
57
TROUBLESHOOTING (CONTINUED)
POSSIBLE CAUSE
When oven is working, air circulates within the cavity. The door does not form an
airtight seal, so it is normal for air to escape from the door.
The oven cavity will normally be colder than the food being cooked, and so steam
produced when cooking will condense on the colder surface. The amount of steam
produced depends on the water content of the food being cooked. Some foods,
such as potatoes have a high moisture content. Condensation trapped in the door
glass should clear after a few hours.
Arcing will occur when a metallic object comes into close proximity to the oven cavity
during cooking. This may possibly roughen the surface of the cavity, but would not
otherwise damage the oven. 
Ensure all “eyes” are removed and stand directly onto the turntable or in a heat
resistant flan dish or similar.
Check the door is closed properly.
Ensure correct power level has been selected.
The microwave energy pulses ON/OFF during cooking/defrosting.
The cabinet may become hot to the touch - keep children away.
Outer cabinet/door is hot.
PROBLEM
Draught circulates around
the door.
Flashing or arcing from
within the cavity when
cooking.
Arcing potatoes.
After setting the time, the
oven does not start.
Oven cooks too slowly.
Oven makes a noise.
Condensation forms in the
oven, and may drip from
the door.
The wires in the mains cable are colour coded as
shown opposite:
As the colours of the cores in the mains lead of your
oven may not correspond with the coloured marking
identifying the terminals in your plug, connect the
wires as shown opposite.
Make sure the terminal screws are tight and the cable
is held securely by the cable grip where it enters the
plug. Like most appliances in your home, your oven
must be connected to a single phase  230/240 Volt,
50Hz alternating current supply.
If you do not make the proper electrical connections
you might damage the oven or injure yourself.  Neither
SHARP nor the supplier will be liable if this happens. 
green and yellow stripes =
EARTH
blue
=
NEUTRAL
brown
=
LIVE
• The green and yellow wire to the plug terminal
marked E or
or coloured green or coloured
green and yellow.
• The blue wire to the plug terminal marked N or
coloured black or coloured blue.
• The brown wire to the plug terminal marked L or
coloured red or coloured brown.
WARNING!
THIS APPLIANCE MUST BE EARTHED.
IF YOU HAVE ANY DOUBTS ABOUT YOUR
ELECTRICAL SUPPLY ASK A QUALIFIED
ELECTRICIAN.
TO REPLACE THE MAINS PLUG
58
CALLING FOR SERVICE
• Replacement parts and accessories may be
obtained from our main parts distributor Willow
Vale Electronics Ltd, telephone numbers follow. 
Telephone:
Manchester: 0161 682 1415
Reading:
01734 876444
WARNING
For your own safety, certain microwave oven
parts must be replaced by a qualified Engineer
appointed by SHARP, these are, therefore,
unavailable to customers.
• If you are unable to resolve a problem using the
checks covered on the last few pages, do not
attempt to service this microwave oven
yourself.
• Contact the dealer or supplier from whom the oven
was purchased in order to obtain service. Where
this is not possible, please contact the following
telephone number: LoCall 0345 125387 
(All calls will be charged at local rate).
• For general information & assistance with oven
queries, please contact our 
Customer Information Centre:
Telephone:  0161 205 2623.
Subject to the conditions listed below, SHARP
Electronics (U.K.) Ltd (hereafter called “the
Company”), guarantee to provide for the repair of,
or, at its option replace this SHARP equipment, or any
component thereof, (other than Glass Turntables),
which is faulty or below standard, as a result of
inferior workmanship or materials.
The conditions of the Guarantee: 
1 This Guarantee shall only apply to defects or faults
which are notified to the Company, or its Service
Technician appointed by Sharp, within one year
from the date of purchase of the equipment,
provided that this Guarantee shall extend for a
further period of one year in respect of microwave
oven magnetron parts only.
2 This Guarantee covers equipment intended for
private domestic use only. This oven is suitable for
domestic food preparation and is not designed for
commercial, industrial or laboratory use. This
Guarantee does not apply to equipment used in
the course of a business, trade or profession.  Only
use the microwave oven for cooking, defrosting or
reheating of food. SHARP declines any liability for
damages caused by improper use.
3 This Guarantee does not cover any faults or
defects caused by accident, misuse, fair wear and
tear, neglect, tampering with the equipment, or
any attempt at adjustment or repair other than by a
Service Technician Appointed by Sharp.  
Please clean your microwave oven regularly and
remove any stains or  fat  residues without delay.
Failure to do this may affect the quality and safety
of the product or prejudice your guarantee.
4 In the unlikely event of your equipment requiring
repair, please contact the dealer or supplier from
whom it was purchased.  You will need to provide
proof of date of purchase to the repairing
company.  Please keep your invoice or receipt,
which is supplied at the time of purchase. Where it
is not possible to contact the dealer or supplier
from whom the oven was purchased, please
contact the telephone number given below.  You
will then be given details of how to obtain service.
Telephone: 0345 125387 
(All calls will be charged at local rate.)
5 This Guarantee is offered as an additional benefit
to the consumer’s statutory rights and  does not
affect these rights in any way.
SHARP parts and accessories have been specifically
designed for SHARP Microwaves.
No liability can be accepted for any inaccuracies or
omissions in this publication, although every possible
care has been taken to make it as complete and
accurate as possible.
GUARANTEE
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