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All About

Servicing

OVER THE RANGE

MICROWAVE OVENS

1.7 Cu. Ft. Model With Standard And

Electronic Controls

™

Publication #5995546412

Part # 316439600 August 2009

Electrolux Major Appliances; North America

250 Bobby Jones Expwy

Augusta, GA 30907

Содержание CGMV173KB

Страница 1: ...ng OVER THE RANGE MICROWAVE OVENS 1 7 Cu Ft Model With Standard And Electronic Controls Publication 5995546412 Part 316439600 August 2009 Electrolux Major Appliances North America 250 Bobby Jones Expwy Augusta GA 30907 ...

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Страница 3: ... operation of any safety device 5 Use ONLY REPLACEMENT PARTS CATALOGED FOR THIS APPLIANCE Substitutions may defeat compliance with Safety Standards Set For Home Appliances 6 GROUNDING The standard color coding for safety ground wires is GREEN or GREEN with YELLOW STRIPES Ground leads are not to be used as current carrying conductors It is EXTREMELY important that the service technician reestablish...

Страница 4: ... Thermal Cut Out Hood 2 7 Turntable Motor 2 7 Cooling Fan Motor 2 7 Hood Fan Motor 2 7 Hood Lamp 2 7 Stirrer Motor 2 7 C T Fuse 2 7 Humidity Sensor Circuit 2 8 Section 3 Troubleshooting and Testing Warnings and Cautions 3 1 Troubleshooting Guide Chart 3 2 Test Procedures 3 3 Section 4 Component Teardown Warnings and Cautions 4 1 Hood Exhaust Louver Removal 4 2 Removal Of Oven From Wall 4 2 Outer C...

Страница 5: ... or damage of any kind arising from the use of this manual WARNING Never operate the oven until the following points are ensured A The door is tightly closed B The door brackets and hinges are not defective C The door packing is not damaged D The door is not deformed or warped E There is no other visible damage with the oven Servicing and repair work must be carried out only by trained service per...

Страница 6: ...cedure outlined in this service manual If microwave emissions level is in excess of the specified limit contact ELECTROLUX CANADA CORPORATION immediately If the unit operates with the door open service person should 1 Tell the user not to operate the oven 2 Contact ELECTROLUX CANADA CORPORATION and NHW CANADA immediately Service personnel should inform ELECTROLUX CANADA CORPORATION of any certifie...

Страница 7: ...open 3 Discharge high voltage capacitor 4 Reconnect leads to the primary of the inverter unit 5 Reinstall the outer case cabinet 6 Reconnect the power supply cord after the outer case is installed 7 Run the oven and check all functions After repairing 1 Reconnect all leads removed from components during testing 2 Reinstall the outer case cabinet 3 Reconnect the power supply cord after the outer ca...

Страница 8: ...d accurately 4 Set the cooking control on Full Power Cooking Mode 5 Close the door and select a cook cycle of several minutes If the water begins to boil before the survey is completed replace it with 275 ml of cool water C Leakage test with enclosure installed 1 Grasp probe of survey instrument and hold it perpendicular to gap between door and the body of the oven 2 Move the probe slowly not fast...

Страница 9: ...ty The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive material such as glass or plastic The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power Cooking Mode 5 Close ...

Страница 10: ...0 C F M Control Complement Touch Control System Clock 1 00 12 59 Timer 0 99 min 99 seconds Microwave Power for Variable Cooking Repetition Rate P HI Full power throughout the cooking time P 90 approx 90 of Full Power P 80 approx 80 of Full Power P 70 approx 70 of Full Power P 60 approx 60 of Full Power P 50 approx 50 of Full Power P 40 approx 40 of Full Power P 30 approx 30 of Full Power P 20 appr...

Страница 11: ... Hz 15 Amp or more dedicated line using a grounded receptacle The receptacle should be located inside the cabinet directly above the Microwave Oven Hood system mounting location When installing this appliance observe all applicable codes and ordinances A short power supply cord is provided to reduce risks of becoming entangled in or tripping over a longer cord Where a two pronged wall receptacle i...

Страница 12: ...or high speed twice for low speed and three times to turn off the fun 11 Auto Touch control panel 12 Time display Digital display 99 minutes 99 seconds 13 Ventilation openings 14 Removable turntable The turntable will rotate clockwise or counterclockwise Only remove for cleaning 15 Removable turntable support First carefully place the turntable support in the motor shaft in the center of the micro...

Страница 13: ...is placed to be cooked 5 Upon completion of the cooking time the power transformer oven lamp etc are turned off and the generation of microwave energy is stopped The oven will revert to the OFF condition 6 When the door is opened during a cook cycle monitor switch door sensing switch primary interlock switch third door switch and secondary interlock relay are activated with the following results T...

Страница 14: ...Section 2 Operation 2 2 Figure 2 1 Oven Off Condition Figure 2 2 Oven ON Cooking Condition ...

Страница 15: ... The ON OFF time ratio does not correspond with the percentage of microwave power because approximately 2 seconds are needed for heating of the magnetron filament NOTE VENTILATION METHODS HOT AIR EXHAUST 1 Vertical Venting For this venting method hot air rising from the conventional range below is drawn in by the hood fan motor through the grease filters at the right and left sides of the base cov...

Страница 16: ... 1 Operate the oven in sensor cooking mode by referring to the operation manual 2 The coil of shut off relays RY1 are energized the oven lamp stirrer motor and cooling fan motor are turned on but the power transformer is not turned on 3 After about 32 seconds the relay RY2 is energized The power transformer is turned on microwave energy is produced and first stage is started The 32 seconds is the ...

Страница 17: ...voltage In addition the synchronizing signal is available in order to compose a basic standard time in the clock circuit Symbol Voltage Application VC 5 0V LSI IC1 3 Synchronizing Signal Circuit The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit It incorporates a very small error because it works on commercial frequency 4 Reset Circuit...

Страница 18: ...ed by improper setting of cooking time or failure of control unit Under normal operation the thermal cut out remains closed However the thermal cut out will open at 293 F 145 C causing the oven to shut down Before replacing a blown C T fuse test the stop switch door sensing switch relay RY1 primary interlock switch third door switch and monitor switch components for proper operation CAUTION C T fu...

Страница 19: ... upper rear part of the oven cavity The hood fan motor removes hot air from around the oven as it rises from the conventional electric or gas range over which it is installed This air is then expelled either vertically or horizontally through the customer supplied duct system or discharged back into the kitchen HOOD LAMP The hood lamps are mounted at the hood lamp angle on the base cover The hood ...

Страница 20: ...it to allow the LSI to control sensor cooking of the unit When the unit is set in the sensor cooking mode 32 seconds clearing cycle occurs than the detector circuit starts to function and the LSI observes the initial voltage available at its AIN4 terminal With this voltage given the switches SW1 to SW5 in the LSI are turned on in such a way as to change the resistance values in parallel with R98 R...

Страница 21: ...cing C T fuse If C T fuse is replaced the monitor switch must also be replaced CAUTION Whenever troubleshooting is performed with the power supply cord disconnected It may in some cases be necessary to connect the power supply cord after the outer case has been removed in this event 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 To discharge high ...

Страница 22: ...l condition Oven lamp does not light with door is opened Hood fan motor operates when power cord is first plugged into wall receptacle Temperature of oven base seems more than 140ºF 60ºC because of operation of the range below But hood fan motor does not turn on automatically Normal ly food fan motor should be operating at low speed Hood lights do not turn on when Light hi lo off pad is pressed Ho...

Страница 23: ...easuring cup with 16 oz 453 cc of tap water and measure the temperature of the water with a thermometer or thermocouple temperature tester Stir the thermometer or thermocouple through the water until the temperature stabilizes Record the temperature of the water 2 Place the cup of water in the oven Operate oven at 100 POWER selecting more than 60 seconds cook time Allow the water to heat for 60 se...

Страница 24: ...FIER TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor See Warnings and Instructions on page 3 1 4 Isolate the rectifier from the circuit Using the highest ohm scale of the meter read the resistance across the terminals and observe reverse the leads to the rectifier terminals and observe meter reading If a short ...

Страница 25: ...e power supply cord after the outer case is installed 8 Run the oven and check all functions THERMAL CUT OUT AND TEMPERATURE FUSE TEST CAVITY THERMAL CUT OUT TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor See Warnings and Instructions on page 3 1 4 A continuity check across the thermal cut out terminals should...

Страница 26: ...on COM and normally open NO terminal of the switch The meter should indicate an open circuit with the door open and a closed circuit with the door closed If improper operation is indicated replace the stop switch door sensing switch 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 R...

Страница 27: ...E TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor See Warnings and Instructions on page 3 1 4 A continuity check across C T fuse terminals should indicate a closed circuit unless temperature of C T fuse reaches approximately 302 F 150 C An open C T fuse indicates overheating of the magnetron Check for restricte...

Страница 28: ...functions HOOD FAN MOTOR TEST 1 Disconnect power supply cord and remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor See Warnings and Instructions on page 3 1 4 If the motor does not turn touch the FAN pad once and check voltage between pins 1 and 2 Blue and Black wires of the 6 pin connector If 120 Volts appear and the hood capacitor is good replace the hood fan...

Страница 29: ...re connect the power supply cord KEY UNIT Membrane Switch 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Check key unit ribbon connection before replacement 5 Reconnect all leads removed from components during testing 6 Re install the outer case cabinet 7 Reconnect the power supply cord after the outer case is in...

Страница 30: ...dicator does not light d The corresponding segments of all digits do not light up or they continue to light up e Wrong figure appears f A certain group of indicators do not light up g The figure of all digits flicker 3 Other possible problems caused by defective control unit a Buzzer does not sound or continues to sound b Clock does not operate properly c Cooking is not possible When testing is co...

Страница 31: ...tor Use the Key unit matrix indicated on the control panel schematic and place a jumper wire between the pins that correspond to the Stop Clear pad making momentary contact If the control unit responds by clearing with a beep the key unit is faulty and must be replaced If the control unit does not respond it is faulty and must be replaced If a specific pad does not respond the above method may be ...

Страница 32: ...il with a D C voltmeter during the microwave cooking operation DC voltage indicated Defective relay DC voltage not indicated Check diode which is connected to the relay coil If diode is good control unit is defective 8 If any abnormal condition is detected replace the control unit 9 Disconnect the power supply cord and then remove outer case 10 Open the door and block it open 11 Discharge high vol...

Страница 33: ... 7 Disconnect the power supply cord 8 Open the door and block it open 9 To discharge high voltage capacitor wait for 60 seconds 10 Reconnect all leads removed from components during testing 11 Re install the outer case cabinet 12 Reconnect the power supply cord after the outer case is installed 13 Run the oven and check all functions STEPS OCCURRENCE CAUSE OR CORRECTION 1 The rated AC voltage is n...

Страница 34: ... spray and turn off before food is properly cooked 8 After the oven is started on sensor cooking condition if the sensor has not detected the vapor of the food ERROR will appear and the oven will shut off WATER LOAD COOKING TEST Make sure the oven has been plugged in at least two minutes before checking sensor cook operation The cabinet should be installed and screws tightened 1 Fill approximately...

Страница 35: ...moisture will be displayed If new sensor dose not operate properly the problem is with the control unit and refer to explanation below CHECKING CONTROL UNIT 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect the sensor connector that is mounted to control panel 5 Then connect the dummy resistor circuit see...

Страница 36: ... 3 Discharge high voltage capacitor See Warnings and Instructions on page 3 1 4 Disconnect the leads to the primary of the power transformer 5 Using an ohmmeter check between the terminals as described in the following table If incorrect readings are obtained replace the noise filter 6 Reconnect all leads removed from components during testing 7 Reinstall the outer case cabinet 8 Reconnect the pow...

Страница 37: ...n 2 If the wave guide or oven cavity are not intact 3 If the door is not closed 4 If the outer case cabinet is not fitted WARNING Disconnect oven from power supply before removing outer case Discharge high voltage capacitor before touching any oven components or wiring after removing outer case CAUTION To prevent an electric shock take the following precautions 1 Before wiring A Disconnect the pow...

Страница 38: ... Open the door and block it open 3 Remove three 3 screws holding the hood exhaust louver to the oven Refer to procedure of HOOD EXHAUST LOUVER REMOVAL 4 Remove four 4 screws holding the rear stay to the hood fan motor or the oven and remove it 5 Remove the two 2 screws holding the left side of the base cover to the outer case cabinet 6 Remove the four 4 screws from the rear of the outer case cabin...

Страница 39: ...uct Oven Lamp Socket And AH Sensor Removal 1 Disconnect the power supply cord and remove the oven from wall and remove outer case Refer to procedure of Removal of Oven from Wall and Outer Case Removal 2 Open the door and block it open 3 Discharge high voltage capacitor HOOD FAN MOTOR 4 Disconnect the 6 pin connector of the hood fan motor from the main wire harness located at the right edge of the ...

Страница 40: ...om falling 11 Remove the magnetron from the unit with care so the magnetron tube should not be hit by any metal object around the tube 12 Remove the one 1 screw holding the magnetron air guide to the magnetron 13 Remove the magnetron air guide When replacing the magnetron be sure the R F Gasket is in place and mounting screws are tightened securely CAUTION To discharge the high voltage capacitor w...

Страница 41: ...at is the connecting lead of the high voltage rectifier against the chassis with the use of an insulated screwdriver NOTE When replacing the high voltage rectifier assembly the ground side terminal must be secured firmly with a grounding screw CAUTION Turntable Motor Removal 1 Disconnect the power supply cord 2 Open the door and block it open 3 Remove the three 3 screws holding the base cover to t...

Страница 42: ...ade from the fan motor shaft according the following procedure 10 Hold the edge of the rotor of the fan motor by using a pair of groove joint pliers 11 Remove the fan blade from the shaft of the fan motor by pulling and rotating the fan blade with your hand 12 Now the fan blade will be free INSTALLATION 1 Install the fan blade to the fan motor shaft according to the following procedure 2 Hold the ...

Страница 43: ...p Removal 1 Disconnect the power supply cord 2 Remove three 3 screws holding the hood exhaust louver to oven cavity front flange 3 Remove the hood exhaust louver from the oven by pushing the right and left tabs of the hood exhaust louver Refer to procedure of HOOD EXHAUST LOUVER REMOVAL 4 Lift the oven lamp cover up 5 Now the oven lamp and the socket are found 6 Screw the oven lamp out from the la...

Страница 44: ...unded soldering iron and work table Servicing of Touch Control Panel The following are procedures to permit servicing of the touch control panel of the microwave oven and the precautions you must take when doing so To perform the servicing power to the touch control panel is available either from the power line of the oven itself or from an external power source Stirrer Motor Removal 1 Disconnect ...

Страница 45: ...elated controls of the touch control panel checking them is possible if dummy resistor s with resistance equal to that of the controls are used B Servicing the touch control panel with power supply from an external power source Disconnect the touch control panel completely from the oven proper and short both ends of the door sensing switch on PWB of the touch control panel which brings about an op...

Страница 46: ...e connector CN G 6 Tear away the graphic sheet from the control panel frame 7 Tear away the membrane switch from the control panel frame REINSTALLATION 1 Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol 2 Tear the backing paper from the new membrane switch 3 Insert the ribbon cable of the membrane switch into the slit of the control panel frame and ...

Страница 47: ...ven from wall and remove outer case Refer to procedure of Removal of Oven from Wall and Outer case Removal 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Remove the control panel assembly referring to the procedure of CONTROL PANEL ASSEMBLY CONTROL UNIT AND KEY UNIT REMOVAL If door sensing switch primary interlock switch and monitor switch do not operate properly due to a m...

Страница 48: ...citor wait for 60 seconds 4 Remove the hood exhaust louver from the oven cavity Refer to the procedure of HOOD EXHAUST LOUVER REMOVAL 5 Insert a putty knife thickness of about 0 5mm into the gap A between the door stopper and the choke cover as shown in Figure 4 10 to free engaging parts 6 Lift up the door stopper 7 Now the door stopper is free from door assembly 8 Lift up the door assembly to rel...

Страница 49: ... oven cavity NOTE Lower Oven Hinge Upper Oven Hinge Upper Door Hinge Pin Door assembly Door Stopper RE INSTALL RE INSTALL Latch Heads Lower Door Hinge Pin Hood Exhaust Louver Door Disassembly Removal 1 Disconnect the power supply cord and remove the oven from wall and remove outer case Refer to procedure of Removal of Oven from Wall and Outer case Removal 2 Open the door and block it open 3 To dis...

Страница 50: ...3KW KB 13 Remove one 1 screw holding the glass stopper to the door frame 14 Remove the glass stopper from the door frame 15 Remove the door glass cap from the door frame 16 Slide the door glass upwards 17 Remove the door glass from the door frame by slid ing it rightward 18 Now the door glass is free Door Handle 13 Remove the one 1 screw holding the screw cap to the door frame 14 Remove the screw ...

Страница 51: ...Section 5 Wiring Diagrams 5 1 Wiring Schematic Oven ON Condition ...

Страница 52: ...Section 5 Wiring Diagrams 5 2 Pictorial Component Diagram ...

Страница 53: ... 15K 15K R 77 C 64 R 76 C 11 0 1uF 50V 15K R 11 47K Q21 DTA143E KA 50 Q30 36 46 DTA143E KA VR S 1 S10K300E PA154DR RY1 RY3 0 1uF 50V 10uF 35V Q21 KR C 243M C 1 D21 R 1 2702W C 2 1000uF 35V D1 D4 1N4002x4 T1 3 1 5 8 J1 D3 D4 D2 D1 C 21 RY4 D25 G 5S 124V RY5 D24 DU24D1 1P M R D26 RY6 D23 G 5N 1A24V A9 C 5 B1 NO C OM C OM NO C 3 LD1 LD5 LTS T C 190KG KT 47uF 16V KTA1267Y R 4 27 C 3 10uF 35V Q1 2S B12...

Страница 54: ...Section 5 Wiring Diagrams 5 4 LD1 LD2 LD3 LD4 LD5 Control Board ...

Страница 55: ... 5 Screw 3mm x 8mm 32 Screw 3mm x 8mm 76 Installation material assembly 77 Grommet 78 Toggle screw 79 Screw 5mm x 85mm 80 Screw 4mm x 8mm 81 Screw 5mm x 35mm 82 Washer 89 Main harness 95 Rack 120 User caution label Note 1 If the control panel 31 3 is exchanged the key sheet 31 1 and FPC 31 2 must be exchanged at the same time 76 32 30 31 120 116 31 5 31 5 31 4 31 3 31 1 31 2 77 78 79 81 82 80 89 9...

Страница 56: ...assemply 37 Turntable support assembly 38 Turntable tray Parts marked are used in voltage more than 250V C T fuse assembly 20A 150 C interchangable C T fuse assembly 20A 150 C or interchangable Oven And Cabinet Part Listing NO DESCRIPTION 39 Capacitor holder 40 Stirrer cover assembly 41 Stirrer fan assembly 42 Noise ﬁlter unit 43 Turntable motor packing 44 Latch hook 45 Unit mounting plate 46 Fan ...

Страница 57: ...6 50 8 83 44 108 118 8 100 106 106 117 116 116 99 7 83 19 41 40 38 93 26 2 49 53 93 37 14 11 94 45 97 104 104 122 46 13 47 97 55 43 3 5 6 102 39 4 9 99 99 83 97 97 1 105 24 25 105 123 23 91 51 92 12 27 55 101 16 96 9 119 121 61 62 28 97 42 115 50 29 18 Oven and Cabinet Parts Exploded View ...

Страница 58: ...6 Door stopper NOTE unitl July 2009 production 63 Door assembly 65 Door frame 67 Latch head 69 Latch spring 71 Choke cover assembly NOTE unitl July 2009 production 71 Choke cover assembly NOTE from August 2009 production 72 Sealer ﬁlm 73 Door handle 74 Screw 4mm x 8mm 75 Screw 4mm x 20mm 109 Bage 110 Door glass 111 Glass stopper 112 Door glass cap 113 Screw 3mm x 8mm 114 Screw cover ...

Страница 59: ...ly 67 Latch head 69 Latch spring 71 Choke cover assembly NOTE unitl July 2009 production 71 Choke cover assembly NOTE from August 2009 production 72 Sealer ﬁlm 73 Door handle 74 Screw 4mm x 8mm 75 Special screw 109 Bage 113 Screw 3mm x 8mm 114 Screw cover Door Parts For CGMV174KF 74 67 65 69 75 74 63 72 56 71 114 109 73 113 unitl July 2009 production ...

Страница 60: ...late 87 Wall template 93 Grease ﬁlter 2 95 Rack 93 76 84 85 86 87 38 95 36 GREASE FILTER x2 INSTALL MATERIAL ASSEMBLY OPERATION MANUAL WALL TEMPLATE INSTALLATION INSTRUCTION TOP TEMPLATE TURNTABLE TRAY TRAY PAD TOP PAD BOTTOM PAD PACKING CASE ACCESSORY HOLDER WRAP COVER Non replaceable items DOOR PROTECTOR RACK HOLDER PROTECTION SHEET RACK DAMPER ASSEMBLY DOOR PAD CABINET COVER Packing and Accesso...

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