Electrolux MCD2660E, JMW9161, MCD2661E, MO926G, MOA4226 Service Manual
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SOI 03.06 FV 599 36 78-45
SERVICE MANUAL
MICROWAVE OVENS
ELECTROLUX HOME PRODUCTS
Corso Lino Zanussi,30
Publication No.
I - 33080 PORCIA /PN (ITALY)
599 36 78-45
Tel +39 0434 394850
Fax +39 0434 394096
SOI
Edition: 03.2006
EN/SERVICE/FV
Microwave Oven
(Middle Grill)
MCD2660E (EU)
MCD2661E (EU)
MCD2660E (UK)
EMS2685 (EU)
EMS2685 (UK)
ZM266ST (UK)
JMW9161 (A,D)
MO926G (I)
MOA4226 (D,K)
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TABLE OF CONTENTS
CAUTION, MICROWAVE RADIATION / GENERAL IMPORTANT INFORMATION .......................4
SERVICING / GENERAL INFORMATION .......................................................................................5
PRODUCT SPECIFICATIONS.........................................................................................................6
APPEARANCE VIEW .......................................................................................................................7
OPERATING SEQUENCE .............................................................................................................13
FUNCTION OF IMPORTANT COMPONENTS..............................................................................15
TROUBLESHOOTING CHART ......................................................................................................17
TEST PROCEDURE.......................................................................................................................18
CONTROL PANEL ASSEMBLY.....................................................................................................26
SERVICING ....................................................................................................................................27
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..........................................28
MICROWAVE MEASUREMENT ....................................................................................................34
TEST DATA A GLANCE / WIRING / RE-WIRING .........................................................................35
SCHEMATIC DIAGRAMS ..............................................................................................................36
PICTORIAL DIAGRAM...................................................................................................................38
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CAUTION
CAUTION
MICROWAVE RADIATION
Personnel should not be exposed to the microwave energy which may radiate from the magnetron
or other microwave generating devices if it is improperly used or connected. All input and output
microwave connections, waveguides, flanges and gaskets must be secured. Never operate the
device without a microwave energy absorbing load attached.
Never look into an open waveguide or antenna while the device is energized.
GENERAL IMPORTANT INFORMATIONS
This Manual has been prepared to provide Service Engineers with Operation and Service Information.
It is recommended that service engineers carefully study the entire text of this manual, so they will be
qualified to render satisfactory customer service.
WARNING
Note: The parts marked "*" are used at voltage
more than 250V. (Schematic Diagrams).
WARNING
Never operate the oven until the following points are ensured.
(A) The door is tightly closed.
(B) The door and oven hinges are not defective.
(C) The door packing is not damaged.
(D) The door is not deformed or warped.
(E) There is not any other visible damage with the oven.
Servicing and repair work must be carried out only by trained
Service Engineers.
All the parts marked ”*” on schematic diagrams are used at
voltages more than 250V.
Removal of the outer wrap gives access to potentials above
250V.
If the Magnetron are damaged may cause undue microwave
exposure.
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SERVICING
WARNING TO SERVICE PERSONNEL
Microwave ovens contain circuitry capable of producing very high voltage and current.
Contact with the following parts will result in electrocution
High voltage capacitor, High Voltage transformer, Magnetron, High voltage rectifier assembly,
High voltage wires.
REMEMBER TO CHECK 3D
1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge high voltage capacitor.
WARNING AGAINST THE CHARGE OF THE
HIGH VOLTAGE CAPACITOR
The high-voltage capacitor remains charged about
60seconds after the oven has been switched off.
Wait for 60 seconds and then short-circuit the
connection of the high-voltage capacitor (that is, of
the connecting lead of the high-voltage rectifier)
against the chassis with the use of an insulated
screwdriver.
It is recommended that wherever possible faultfinding is carried out with the supply disconnected. It
may in, some cases, be necessary to connect the
supply after the outer case has been removed, in this
event carry out 3D checks and then disconnect the
leads to the primary of the power transformer. Ensure
that these leads remain isolated from other
components and the oven chassis. (Use insulation
tape if necessary.) When the testing is completed
carry out 3D checks and reconnect the leads to the
primary of the power transformer.
REMEMBER TO CHECK 4R
1) Reconnect all leads removed from components
during testing.
2) Replace the outer case (cabinet).
3) Reconnect the supply.
4) Run the oven. Check all functions.
Microwave ovens should not be run empty. To test for
the presence of microwave energy within a cavity,
place a cup of cold water on the oven turntable, close
the door and set the power to HIGH and set the
microwave timer for two (2) minutes. When the two
minutes has elapsed (timer at zero) carefully check
that the water is now hot. If the water remains cold
carry out 3D checks and re-examine the connections
to the component being tested.
When all service work is completed, and the oven is
fully assembled, the microwave power output should
be checked and a microwave leakage test carried out.
When troubleshooting the microwave oven, it is
helpful to follow the Sequence of Operation in
performing the checks.
Many of the possible causes of trouble will require
that a specific test be performed. These tests are
given a procedure letter which will be found in the
"Test Procedure" section.
IMPORTANT:
If the oven becomes inoperative
because of a blown fuse F1 in the
monitored latch switch - monitor
switch - circuit, check the monitored
latch switch and monitor switch and
before replacing the fuse F1.
GENERAL INFORMATION
WARNING
THIS APPLIANCE MUST BE EARTHED
IMPORTANT
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING
CODE:
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
As part of our policy of continuous improvement, we reserve the right to
alter design and specifications without notice
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PRODUCT SPECIFICATIONS
SPECIFICATION
ITEM DESCRIPTION
Power Requirements 230 Volts(EU)/230-240 Volts(UK)
50 Hertz
Single phase, 3 wire earthed
EU UK
Power Consumption
Microwave cooking
Grill cooking
Dual cooking
1.42kW Approx. 6.3A
1.0kW Approx. 4.2A
2.4kW Approx. 10.2A
1.4/6.2
1.0/4.3
2.35/10.4
1.42/6.3
1.0/4.2
2.4/10.2
Power Output
900W watts nominal of RF microwave energy
(measured by way of IEC 60705)
Operating frequency of 2450 MHz
Case Dimensions
Width 592mm
Height 388/460mm
Depth 437mm
Cooking Cavity Dimensions
Width 342mm
Height 207mm
Depth 368mm
Turntable diameter 325mm
Clock (1.00-12.59 or 0.00-23.59) - 12HR or 24HR setting
Timer (0-99 minutes 90 seconds)
Microwave Power for Variable Cooking
Repetition Rate;
100P .................. Full power throughout the cooking time
70P ........................................
approx. 70% of Full Power
50P ........................................
approx. 50% of Full Power
30P .........................................
approx. 30% of Full Power
10P ........................................... approx. 10% of Full Power
Stir
TIMER/WEIGHT/PORTION button
AUTO COOK button
Turn over
AUTO COOK PLUS GRILL1 button
AUTO COOK PLUS GRILL2 button
AUTO DEFROST button
Weight / Microwave
power level
COOKING MODE button
Grill
START/QUICK button
STOP button
DOOR OPENING button
Microwave
Cooking in progress
Stir
Turn over
Weight / Microwave
power level
Grill
Microwave
Control Complement
Cooking in progress
Net weight
Approx. 20kg
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APPEARANCE VIEW
OVEN
1 Front trim
2 Oven lamp
3 Control panel
4 Door open button
5 Waveguide cover
6 Oven cavity
7 Seal packing
8 Door seals and sealing surfaces.
9 Fixing points (4 points)
10 Ventilation openings
11 Outer cover
12 Rear cabinet
13 Power supply cord support clip.
14 Power supply cord (EU)
15 Power supply cord (UK)
16 Low trivet
17 High trivet
1. Place the turntable support in the centre of the
oven floor so that it can freely rotate around the
coupling.
2. Place the turntable onto the turntable support.
Turntable
Turntable support system
Turntable
support
Coupling
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APPEARANCE VIEW
CONTROL PANEL
MCD2660E / MCD2661E / MOA4226
1 Digital Display
2 Indicators
The appropriate indicator will flash or light up, just
above each symbol according to the instruction.
When an indicator is flashing, press the
appropriate button (having the same symbol)
Or carry out the necessary operation.
Stir
Turn over
Weight/Power level
Grill
Microwave
Cooking in progress
3 TIMER/WEIGHT/POWER knob
4 AUTO COOK button
Press to select one of the 2 automatic programmes
5 AUTO COOK PLUS GRILL 1 button
Press to select one of the 2 automatic programmes
6 AUTO COOK PLUS GRILL 2 button
Press to select one of the 3 automatic programmes
7 AUTO DEFROST button
Press to select one of the 5 automatic programmes
8 COOKING MODE button
Press to select either microwave, grill or dual grill,
or use to set the clock.
1. press once to select microwave
2. press twice to select the grill
3. press tree times to select dual grill mode,
microwave with grill.
9 START/QUICK button
10 STOP button
11 DOOR OPENING button
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APPEARANCE VIEW
CONTROL PANEL
EMS2685
1 Digital Display
2 Indicators
The appropriate indicator will flash or light up, just
above each symbol according to the instruction.
When an indicator is flashing, press the
appropriate button (having the same symbol) or
carry out the necessary operation.
Stir
Turn over
Weight/Power level
Grill
Microwave
Cooking in progress
3 TIMER/WEIGHT/POWER knob
4 AUTO COOK button
Press to select one of the 2 automatic programmes
5 AUTO COOK PLUS GRILL 1 button
Press to select one of the 2 automatic programmes
6 AUTO COOK PLUS GRILL 2 button
Press to select one of the 3 automatic programmes
7 AUTO DEFROST button
Press to select one of the 5 automatic programmes
8 COOKING MODE button
Press to select either microwave, grill or dual grill,
or use to set the clock.
1. press once to select microwave
2. press twice to select the grill
3. press tree times to select dual grill mode,
microwave with grill.
9 START/QUICK button
10 STOP button
11 DOOR OPENING button
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APPEARANCE VIEW
CONTROL PANEL
ZM266ST
1 Digital Display
2 Indicators
The appropriate indicator will flash or light up, just
above each symbol according to the instruction.
When an indicator is flashing, press the
appropriate button (having the same symbol) or
carry out the necessary operation.
Stir
Turn over
Weight/Power level
Grill
Microwave
Cooking in progress
3 TIMER/WEIGHT/POWER knob
4 AUTO COOK button
Press to select one of the 2 automatic programmes
5 AUTO COOK PLUS GRILL 1 button
Press to select one of the 2 automatic programmes
6 AUTO COOK PLUS GRILL 2 button
Press to select one of the 3 automatic programmes
7 AUTO DEFROST button
Press to select one of the 5 automatic programmes
8 COOKING MODE button
Press to select either microwave, grill or dual grill,
or use to set the clock.
1. press once to select microwave
2. press twice to select the grill
3. press tree times to select dual grill mode,
microwave with grill.
9 START/QUICK button
10 STOP button
11 DOOR OPENING button
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APPEARANCE VIEW
CONTROL PANEL
JMW9161
1 Digital Display
2 Indicators
The appropriate indicator will flash or light up, just
above each symbol according to the instruction.
When an indicator is flashing, press the
appropriate button (having the same symbol) or
carry out the necessary operation.
Stir
Turn over
Weight/Power level
Grill
Microwave
Cooking in progress
3 TIMER/WEIGHT/POWER knob
4 AUTO COOK button
Press to select one of the 2 automatic programmes
5 AUTO COOK PLUS GRILL 1 button
Press to select one of the 2 automatic programmes
6 AUTO COOK PLUS GRILL 2 button
Press to select one of the 3 automatic programmes
7 AUTO DEFROST button
Press to select one of the 5 automatic programmes
8 COOKING MODE button
Press to select either microwave, grill or dual grill,
or use to set the clock.
1. press once to select microwave
2. press twice to select the grill
3. press tree times to select dual grill mode,
microwave with grill.
9 START/QUICK button
10 STOP button
11 DOOR OPENING button
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APPEARANCE VIEW
CONTROL PANEL
MO926G
1 Digital Display
2 Indicators
The appropriate indicator will flash or light up, just
above each symbol according to the instruction.
When an indicator is flashing, press the
appropriate button (having the same symbol) or
carry out the necessary operation.
Stir
Turn over
Weight/Power level
Grill
Microwave
Cooking in progress
3 TIMER/WEIGHT/POWER knob
4 AUTO COOK button
Press to select one of the 2 automatic programmes
5 AUTO COOK PLUS GRILL 1 button
Press to select one of the 2 automatic programmes
6 AUTO COOK PLUS GRILL 2 button
Press to select one of the 3 automatic programmes
7 AUTO DEFROST button
Press to select one of the 5 automatic programmes
8 COOKING MODE button
Press to select either microwave, grill or dual grill,
or use to set the clock.
1. press once to select microwave
2. press twice to select the grill
3. press tree times to select dual grill mode,
microwave with grill.
9 START/QUICK button
10 STOP button
11 DOOR OPENING button
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