Service Manual: Microwave Oven AVM 562
Service Manual: Microwave Oven AVM 562
Service Manual: Microwave Oven AVM 562
Service Manual
Microwave oven
AVM 562
Model AVM 562
Version 8538 562 64291 Page
Introduction safety 2
Exploded view 7
Wiring diagram 8
This documentation is only intended for qualified technicians who are aware of the respec-
tive safety regulations.
Date: 30.01.2002 Subject to modification
Document-No.: 4812 714 14165
30.01.2002 / Page 2 AVM 562 Whirlpool Europe
Doc. No: 4812 714 14165 8538 562 64291 Customer Service SERVICE
Introduction safety
INTRODUCTION
Despite all the steps taken to make the oven safe, the safety is dependent on the correct installation and the fact
the user understands how to use and maintain the oven.
The information in this section should be used as a reminder that the oven is safe and that anyone who uses it must
first read the instructions for use in order to be able to use the oven correctly and obtain best results.
SAFETY
To avoid injury to yourself and damage to the appliance always work to the following rules when servicing an oven.
Always disconnect the plug from the mains before starting work.
If there is no plug switch off the electric supply at the control box.
When you have finished servicing an oven before you reconnect it to the mains, make sure that:
- all the internal connections are correct
- the wires are insulated and not touching the door or the cabinet or anything sharp
- all the earth connections are electrically and mechanically sound
- do not modify or anyway interfere with the safety devices built-in to the oven
- make sure that each replacement part you use conforms to the manufacturer´s specifications
Do not start a repair if you have any doubt as to your ability to complete it.
PERSONNEL SHOULD NOT BE EXPOSED TO THE MICROWAVE ENERGY WHICH MAY RADIATE FROM THE MAGNETRON,
WAVEGUIDE OR ANTENNA IF THEY ARE IMPROPERLY USED OR CONNECTED. ALL INPUT
AND OUTPUT MICROWAVE CONNECTIONS, WAVEGUIDES, FLANGES AND GASKETS MUST BE SECURE.
NEVER OPERATE THE DEVICE WITHOUT A MICROWAVE ENERGY ABSORBING LOAD ATTACHED.
NEVER LOOK INTO AN OPEN WAVEGUIDE OR ANTENNA WHILE THE DEVICE IS ENERGIZED.
NEVER OPERATE AN OVEN WITH CABINET OFF WITHOUT MEASURING THE MICROWAVE LEAKAGE
AROUND MAGNETRON AND VISIBLE MICROWAVE CONNECTIONS (WELDING JOINTS).
Avoid operating the oven if known components in the interlock system, oven door or microwave
generating assembly are known defective. They must be replaced.
IT IS POSSIBLE TO COME IN CONTACT WITH LETHAL HIGH VOLTAGE WHEN WORKING WITH
HV TRANSFORMER, HV CAPACITOR AND MAGNETRON. THEREFORE NEVER TRY TO MEASURE
THE HIGH VOLTAGE. ALWAYS TAKE UTMOST CARE WHEN PERFORMING ELECTRIC
MEASUREMENTS INSIDE THE OVEN.
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SERVICE Customer Service 8538 562 64291 Doc. No: 4812 714 14165
Technical data
Dimensions of cabinet
Height 285 mm
Width 456 mm
Depth 402 mm
Cavity
Electrical
Voltage 230 V
Frequency 50 Hz
Power consumption 1250 W
Current consumption 8 A
Power
Timer
99 min.
Electronic touch foil control
10-level microwave power level
Programmable
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Doc. No: 4812 714 14165 8538 562 64291 Customer Service SERVICE
MICROWAVE AND LEAKAGE TESTS
The following is a simple test to check if the appliance is generating microwave energy. This test is not
intended to be an accurate test. An accurate measurement of output power must be performed under strict
control following the IEC standard. In field service, accurate measurement of output power is usually not
required and necessary.
Prepare a glass beaker with a diameter of approx. 190 mm round. with a max. 3 mm wall thickness.
Fill the beaker with exact 1 liter of cold water with an temperature of 10-12 ˚C measure the temperature
of the water before placing into the oven.
Start the oven for 1 min. on full power (only microwave) check the time by your wristwatch after the
magnetron takes full power (Ampere meter).
The unit should be heated up 2-3 times before the test starts.
Check the water temperature under stirring the water and calculate the difference to the start temperature.
˚C x 70(multiplicator)=watt
Please take under consideration that always the measured power output is 15-20% lower than the rating plate
shows. 850 W = 720-680 W if the measured output is below this rate please repeat the measurement.
TESTING EQUIPMENT
0.5l beaker.
Microwave tester of high quality.
TESTING PROCEDURE
Place 0.25l of water into the beaker and place it in the center of the oven.
Hold the probe of the microwave tester to the surface of the oven and scan it at the rate of 2.5 cm per sec.
The unit has to be set out of function, until the unit is repaired and finally saefty tested.
Service engineer should notify the Service Management immediately.
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SERVICE Customer Service 8538 562 64291 Doc. No: 4812 714 14165
Before disassembling the oven, the oven power must be turned off. Remove the power plug of the oven from
the outlet and wait for at least 3 minutes.
When disassembling, service personnel should remove their watches and metal chains from their hands.
Never touch the high voltage components and wire.
Before checking or replacing, discharge the high voltage capacitor to oven chassis grounded with an insulated
wire. Make sure that the wire is grounded to chassis side before short circuiting the capacitor terminal.
MICROWAVE LEAKAGE
Refer to section Leakage Test regarding microwave leakage. If the leakage is greater than 1 mW/cm2, it is
necessary to look for the reason of the increased microwave leakage.
If leakage is found worst at control panel, ventilation openings or oven bottom, check if there is any damaged
parts or loose screws in the respective areas. If so, replace the damaged parts and fasten the screws.
If leakage is found worst around the door perimeter, adjust the door hinges and the interlock support.
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Doc. No: 4812 714 14165 8538 562 64291 Customer Service SERVICE
Spare part list
Exploded view
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Doc. No: 4812 714 14165 8538 562 64291 Customer Service SERVICE
Wiring diagram