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Section 1

Basic Information

Содержание EI30MH55GBA

Страница 1: ...Publication 5995524377 September 2008 P N 316439261 Models EI30MH55GBA EI30MH55GSA EI30MH55GWA EI30MH55GZA EI30MH55GBB EI30MH55GSB EI30MH55GWB EI30MH55GZB ...

Страница 2: ......

Страница 3: ...1 1 Section 1 Basic Information Basic Information ...

Страница 4: ...Section 4 Component Teardown 4 1 Servicing 4 2 Precautions for Using Lead Free Solder 4 3 Warnings 4 4 Hood Louver Removal 4 6 Outer Case Removal 4 6 Hood Fan Motor Removal 4 6 Magnetron Removal 4 7 Hood Fan Thermal Cut out Removal 4 7 Oven Thermal Cut out Removal 4 7 Inverter Unit and Fan Motor Replacement 4 8 Method for Removing Fan Blade 4 9 Method for Installing Fan Blade 4 9 Stirrer Motors Re...

Страница 5: ...ation 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 all ...

Страница 6: ...OR WARPED E THERE IS NO OTHER VISIBLE DAMAGE WITH THE OVEN SERVICING AND REPAIR WORK MUST BE CARRIED OUT ONLY BY TRAINED SERVICE PERSONNEL WARNING CERTAIN INITIAL PARTS ARE INTENTIONALLY NOT GROUNDED AND PRESENT A RISK OF ELECTRI CAL SHOCK ONLY DURING SERVICING SERVICE PERSONNEL DO NOT CONTACT THE FOLLOWING PARTS WHILE THE APPLIANCE IS ENERGIZED INVERTER UNIT HIGH VOLTAGE POWER TRANSFORMER HIGH VO...

Страница 7: ... perform a microwave emission check as per the Microwave Measurement Procedure outlined in this service manual If microwave emissions level is in excess of the specified limit contact Electrolux HOME PRODUCTS INC immediately If the unit operates with the door open service person should 1 tell the user not to operate the oven and 2 contact Electrolux HOME PRODUCTS INC and Food and Drug Administrati...

Страница 8: ...lled 6 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 case is installed 4 Run the oven and 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 ove...

Страница 9: ...al 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 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 C...

Страница 10: ... 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 approx 20 of Full Power P 10 approx 10 of Full Power P 0 No power throughout the cooking time Quick Breakfast Express Lunch Dinner Recipes Popcorn Rehea...

Страница 11: ... the electric current Electrical Requirements The oven is equipped with a 3 prong grounding plug DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE GROUNDING PIN FROM THE PLUG The power supply cord and plug must be connected to a separate 120 Volt AC 60 Hz 15 Amp or more dedicated line using a grounded receptacle The receptacle should be located inside the cabinet directly above the Microwave Oven H...

Страница 12: ...ned and closed or the STOP CLEAR pad is pressed 1 Oven door with see through window 2 Door hinges 3 Oven lamp It will light when oven is operating or door is open 4 Door latches The oven will not operate unless the door is securely closed 5 One touch door open button 6 Auto Touch control panel 7 Timer display Digital display 99 minutes 00 seconds 8 Ventilation openings 9 Light Cover 10 Grease filt...

Страница 13: ...2 1 Section 2 Operation Operation ...

Страница 14: ... cavity where the food is placed to be cooked 5 Upon completion of the cooking time the inverter unit 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 the monitor switch stop switch secondary interlock switch and primary interlock switch are activated with the following results The...

Страница 15: ...ol unit Microwave power operation is as follows The oven can be set for any of 11 power levels 0 to 100 HIGH The variable cooking power less than 40 is programmed at the ratio of ON time and OFF time within 32 sec cycle time base Connection between power setting and ON OFF time of inverter unit OUTPUT POWER SETTING ON TIME OFF TIME Power 100 Power 90 Power 80 Power 70 Continue operation Power 60 P...

Страница 16: ... and left sides of the base cover up through the right and left sides of the oven cavity then discharged vertically at rear center top of the oven into the customer s vent system 2 HORIZONTAL VENTING The air handing is the same as VERTICAL VENTING except that the final air discharge is directed horizontally out from the top rear of the oven into the customer s vent system 3 RE CIRCULATION INSIDE V...

Страница 17: ...uits Wire Colors subject to change without notice 2 Terminal that located to the right side on the lamp socket s back view must be connected to neutral wire 3 Only certain models use the absolute humidity sensor H N GND GRN LVT C1 C2 C4 C3 WHT U L B D E R K L B U L B T H W RED K L B D E R D E R FUSE 20A D E R G R O RED RED A5 RY3 A7 High BLK K L B T H W HOOD CAPACITOR HOOD MOTOR Y R G W L Y U L B ...

Страница 18: ...h and the secondary interlock switch contacts close On opening the door each of these switches operate inversely 3 If the door is opened and the primary interlock switch and secondary interlock switch contacts fail to open the monitor fuse blows simultane ously with closing of the monitor switch contacts CAUTION Before replacing a blown monitor fuse test the stop switch primary and secondary inter...

Страница 19: ...Control Unit Control unit consists of LSI power source circuit syn chronizing signal circuit reset circuit buzzer circuit relay circuit indicator circuit back light circuit and humidity sensor circuit 1 LSI This LSI controls the key strobe signal relay driving signal for oven function and indicator signal 2 Power Source Circuit This circuit generates voltages necessary for the control unit from th...

Страница 20: ...and connected to the A D converter built into the LSI 11 P57 OUT Oven lamp fan motor stirrer motor and inverter unit driving signal To turn on and off shut off relay RY1 The square waveformvoltage is delivered tothe RY1 driving circuit 12 P56 OUT Signal to sound buzzer 2 0 kHz A key touch sound B Completion sound 13 P50 OUT Terminal not used 14 18 P54 P50 OUT Used for initial balancing of the brid...

Страница 21: ...ed to touch keysection A pulse signal is input to P43 P46 terminal while one of G8 line keys on key matrix is touched 37 P23 OUT Key strobe signal Signal applied to touch keysection A pulse signal is input to P43 P46 terminal while one of G9 line keys on key matrix is touched 38 P22 OUT Key strobe signal Signal applied to touch keysection A pulse signal is input to P43 P46 terminal while one of G1...

Страница 22: ...2 SEG 19 53 SEG 19 24 SEG 6 66 SEG 6 11 SEG 18 54 SEG 18 23 SEG 5 67 SEG 5 10 SEG 17 55 SEG 17 22 SEG 4 68 SEG 4 9 SEG 16 56 SEG 16 21 SEG 3 69 SEG 3 8 SEG 15 57 SEG 15 20 SEG 2 70 SEG 2 7 SEG 14 58 SEG 14 19 SEG 1 71 SEG 1 6 SEG 13 59 SEG 13 18 SEG 0 72 SEG 0 5 SEG 12 60 SEG 12 17 73 74 VCC VREF IN Connected to GND 75 AVSS IN Connected to VC 76 COM3 OUT Common data signal Connected to LCD signal ...

Страница 23: ...esistance values in parallel with R98 R102 Changing the resistance values results in that there is the same potential at both F 3 terminal of the humidity sensor and AN0 terminal of the LSI The voltage of AN1 terminal will indicate about 2 5V This initial balancing is set up about 16 seconds after the unit is put in the Sensor Cooking mode As the sensor cooking proceeds the food is heat ed to gene...

Страница 24: ...Operation 2 12 Notes ...

Страница 25: ...3 1 Section 3 Troubleshooting Guide Troubleshooting ...

Страница 26: ...RTANT 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 Disconnect the leads to the primary of the inverter unit 4 Ensure that the leads remain isolated fr...

Страница 27: ...o i t c n u f s i h t r o f d e h c u o t d e n e p o s i r o o d n e h w t h g i l s e o d t i t u B e l c y c k o o c n i t h g i l t o n s e o d p m a l n e v O e t a r e p o r o t o m r e r r t s d n a p m a l n e v O e t a r e p o t o n s e o d r o t o m n a F d e h c u o t s i d a p T R A T S n e h w e l c y c k o o c o t n i o g t o n s e o d n e v O d a o l n e v o n i d e c u d o r p s i ...

Страница 28: ...or thermocouple type tempera ture tester For accurate results the following procedure must be followed carefully 1 Fill the measuring cup with 1 6 oz 453cc 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 ...

Страница 29: ...inals should indicate a closed circuit unless the temperature of the thermal cut out reaches approximately 293F 145C An open thermal cut out indicates overheating of the oven exchange the oven thermal cut out and check inside of oven cavity and for improper setting of cooking time or operation of control unit Check for restricted air flow through the vent holes of the oven cavity especially the co...

Страница 30: ... case is installed 7 Run the oven and check all functions NOTE If the stop switch contacts fail in the open position and the door is closed the cooling fan motor stirrer motor and oven light will be activated by RY1 MONITOR SWITCH TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Before performing this test make sure that the secondary interlock...

Страница 31: ...the monitor switch operates normally The monitor fuse and monitor switch assembly is comprised of a 20 ampere fuse and 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 Run the oven and check all functions HOOD THERMAL CUT OUT TEST 1 Disconnect the power supply cord and then r...

Страница 32: ...tenance cannot be performed with only a voltmeter and ohmmeter In this service manual the touch control panel assembly is divided into two units Control Unit and Key Unit and also the Control Unit is divided into two units LSI Unit and Power Unit and troubleshooting by unit replacement is described according to the symptoms indicated Before testing 1 Disconnect the power supply cord and then remov...

Страница 33: ...ndicate a defective control unit Before replacing the control unit perform the Key unit test Procedure K to determine if control unit is faulty 2 1 In connection with pads a When touching the pads a certain group of pads do not produce a signal b When touching the pads no pads produce a signal 2 2 In connection with indicators a At a certain digit all or some segments do not light up b At a certai...

Страница 34: ...placed 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 used after clearing the control unit to determine if the control unit or key pad is at fault 5 Reconnect all leads removed from components during testing 6 Re install the control panel assembly 7 Reconnect the power supply cord 8 Run the oven and check all functi...

Страница 35: ...ting 12 Re install the hood intake duct R 13 Re install the outer case cabinet 14 Reconnect the power supply cord after the outer case is installed DEFROST TEST 1 Open the door 2 Place one cup of water in the center of the turntable tray in the oven cavity 3 Touch the DEFROST pad once And then touch the number pad 2 4 Touch the number pad 5 5 Close the door 6 Touch the START button 7 The oven is i...

Страница 36: ...n and check all functions 2 Follow the troubleshooting guide given below if indicator does not light up after above check and repairs are finished 1 Disconnect the power supply cord and then remove outer case Refer to procedure of HOOD LOUVER REMOVAL REMOVAL OF OVEN FROM wall and OUTER CASE REMOVAL 2 Open the door and block it open 3 Remove the hood intake duct R 4 Disconnect the leads to the prim...

Страница 37: ...d be at refrigerator temperature and canned soup at room temperature 7 Avoid using aerosol sprays or cleaning solvents near oven while using Sensor settings The sensor will detect vapor given of by the spray and turn off before food is properly cooked 8 If the sensor has not detected the vapor of the food ERROR will appear and the oven will shut off Water load cooking test WARNING The oven should ...

Страница 38: ...g 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 Refer to procedure of HOOD LOUVER REMOVAL REMOVAL OF OVEN FROM wall and OUTER CASE REMOVAL 2 Open the door and block it open 3 Disconnect the sensor connector that is mounted to c...

Страница 39: ...ock it open 3 Disconnect the leads to the primary of the power transformer 4 Using an ohm meter check between the terminals as described in the following table on the right 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 installed 8 Run the oven and check all functions R1 R2 22Ω 1 1 2W R3 4 3...

Страница 40: ...Troubleshooting 3 16 Notes ...

Страница 41: ...4 1 Section 4 Component Teardown Component Teardown ...

Страница 42: ...performance of the touch control panel 1 Disconnect the power supply cord 2 Open the door and block it open 3 Re connect the leads to the primary of the inverter unit 4 Re install the outer case cabinet 5 Re connect the power supply cord after the outer case is installed 6 Run the oven and check all functions A On some models the power supply cord between the touch control panel and the oven itsel...

Страница 43: ...the solder Example 2 Using lead free wire solder When repairing a PWB with the LF symbol only lead free solder should be used Using normal tin lead alloy solder may result in cold sol dered joints and damage to printed patterns As the melting point of lead free solder is approxi mately 40 C higher than tin lead alloy solder it is recommend that a dedicated bit is used and that the iron temperature...

Страница 44: ...THE LATCH LEADS TO RISE IT IS THEN POSSIBLE TO HEAR A CLICK AS THE DOOR SWITCHES OPERATE 3 VISUALLY CHECK THE DOOR AND CAVITY FACE PLATE FOR DAMAGE DENTS CRACKS SIGNS OF ARCING ETC CARRY OUT ANY REMEDIAL WORK THAT IS NECESSARY BEFORE OPERATING THE OVEN DO NOT OPERATE THE OVEN IF ANY OF THE FOLLOWING CONDITIONS EXIST 1 DOOR DOES NOT CLOSE FIRMLY 2 DOOR HINGE SUPPORT OR LATCH HOOK IS DAMAGED 3 THE D...

Страница 45: ... THE WIRE LEADS IN THE OUTER CASE CABINET 4 INSERT THE POSITIVE LOCK CONNECTOR UNTIL ITS PIN IS LOCKED AND MAKE SURE THAT THE WIRE LEADS DO NOT COME OFF EVEN IF THE WIRE LEADS ARE PULLED 5 TO PREVENT AN ERROR FUNCTION CONNECT THE WIRE LEADS CORRECTLY REFERRING TO THE PICTORIAL DIAGRAM Please refer to OVEN PARTS CABINET PARTS CONTROL PANEL PARTS DOOR PARTS when carry ing out any of the following re...

Страница 46: ...to Removal of oven from wall and proceed as follows 1 Disconnect the power supply cord 2 Open the door and block it open 3 Remove five 5 screws holding the rear stay to the outer case cabinet hood fan motor or the oven and remove it 4 Remove the six 6 screws from the rear of the outer case cabinet and one 1 screw at front 5 Slide the outer case cabinet back about 1 inch 3 cm to free it from retain...

Страница 47: ...he tube Hood Fan Thermal Cut out 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 Remove the seven 7 screws holding the hood intake duct R to the oven cavity top plate the oven cavity front flange the fan duct and magnetron duct And remove the hoo...

Страница 48: ...inverter unit 19 Now the inverter unit is free 20 Remove the fan blade from the fan motor shaft Refer to METHOD FOR REMOVING FAN BLADE 21 Remove the two 2 screws holding the fan motor to the fan duct 22 Now the fan motor is free Reinstallation 1 Install the fan motor to the fan duct with the two 2 screws 2 Install the fan blade to the fan motor shaft Refer to METHOD FOR INSTALLING FAN BLADE 3 Now ...

Страница 49: ... not enter the gap between the rotor and the stator of the fan motor because the rotor is easily shaven by pliers and metal pieces may be produced Do not touch the pliers to the coil of the fan motor because the coil may be cut or damaged Do not disfigure the bracket by touching with the pliers CAUTION Do not hit the fan blade with excessive force when installing because the bracket may be disfigu...

Страница 50: ...er motor gear stirrer shaft assembly and shield spring are installed to the motor mounting angle 5 Install the stirrer motor right one to the motor mounting angle with the two 2 screws 6 Install the motor mounting angle to the oven cavity with the two 2 screws 7 Reconnect the wire leads to the stirrer motor right one referring to the pictorial diagram 8 Reinstall the two 2 stirrer fans to the two ...

Страница 51: ...the control panel to the oven cavity front face plate 6 Release the control panel from the oven cavity front face plate by lifting it up 7 Disconnect the wire leads from the relay 8 Disconnect all connectors from the control unit 9 Remove the control panel assembly from the oven 10 Now the control panel assembly is free 11 Disconnect the connector CN G from the control unit 12 Remove three 3 screw...

Страница 52: ...e of the humidity sensor should be positioned through the hole of the oven cavity top plate right This illustration is under the condition which hood intake duct R is removed Noise Filter Removal 1 Disconnect the power supply cord and remove the oven from wall and remove outer case 2 Open the door and block it open 3 Disconnect the wire leads from the terminals of the noise filter 4 Remove one 1 s...

Страница 53: ... the hood intake duct R 4 Remove the control panel assembly referring to the procedure of CONTROL PANEL ASSEMBLY CONTROL UNIT AND KEY UNIT REMOVAL 5 Remove the two 2 screws holding the latch hook to the oven cavity front flange 6 Remove the latch hook from the oven cavity front flange 7 Disconnect the wire leads of each switch 8 Remove each switch from the latch hook by push ing the one 1 stopper ...

Страница 54: ...closed The horizontal position of the latch hook should be adjusted so that the monitor switch and stop switch are acti vated with the door closed 7 Secure the screws with washers firmly 8 Check all of the switches operation If any switch has not activated with the door closed loosen screw and adjust the latch hook position After adjustment check the following 1 In and out play of door remains les...

Страница 55: ...ty front face plate with the three 3 screws NOTE After any service to the door A Make sure that stop switch primary interlock switch secondary interlock switch and monitor switch are operating properly Refer to chapter Test Procedures B An approved microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation standards After any servicing make sure ...

Страница 56: ...Component Teardown 4 16 Notes ...

Страница 57: ...5 1 Section 5 Wiring Diagrams Wiring Diagrams ...

Страница 58: ...ND WIRE ORG HOOD FAN MOTOR STIRRER MOTOR STIRRER MOTOR 1 2 3 4 5 6 WHT RED YLW BLU BLK WHT RED YLW BLU BLU BLK 2 1 3 4 BRN WHT RED RED ORG ORG RED WHT 1 3 2 YLW PPL 5 4 3 2 1 ORG BLK CN C CN H CN B RY3 N O T1 CN E CN H CN G CN E 1 1 1 3 1 3 2 13 HOOD FAN THERMAL CUT OUT HOOD LAMP AND SOCKETS To GND GRN GRN WHT ORG 9 8 7 6 5 4 3 ORG YLW RED PPL 2 1 RED CN A MAGNETRON INVERTER UNIT Base plate R plat...

Страница 59: ...Wiring Diagrams 5 3 Figure S 2b Power Unit Circuit ...

Страница 60: ...Wiring Diagrams 5 4 Figure S 3b LSI Unit Circuit ...

Страница 61: ...Wiring Diagrams 5 5 Figure S 4 Printed Wiring Board ...

Страница 62: ...Wiring Diagrams 5 6 Notes ...

Страница 63: ...6 1 Section 6 Parts List Parts List ...

Страница 64: ...R M 2 3 1 B U B A C G 0 2 1 m a r g a i d c i t a m e h c S R M 9 8 0 B C P A M T 1 2 1 y l b m e s s a s s a l g p m a l d o o H Y R M 6 2 0 B K G N A F 2 2 1 r e v o c e s a B T R M 8 3 1 B P V O C P 3 2 CONTROL PANEL PARTS 24 CPWBFB121MRU0 1 t i n u l o r t n o C 25 XEPS730P08XS0 3 m m 8 x m m 3 w e r c S 26 LANG B048MRP0 1 e l g n a g n i x fi y e K FPNLCB580MRK0 FPNLCB581MRK0 27 FPNLCB582MRK0...

Страница 65: ...3 6 1 0 5 7 S H W X 4 7 1 k c a R 0 M R M 2 1 0 B I M A U 5 7 1 l a u n a m n o i t a r e p O 0 R R M 1 8 4 B E S N I T 6 7 1 e t a l p m e t l l a W d n a p o T 0 R R M 9 1 1 B K S N I T 7 7 1 s s e n r a h p m a l n e v O 0 E R M 5 6 2 B Z V W F 8 7 1 y l b m e s s a e r i w e g a t l o v h g i H 0 E R M 2 1 0 B Z Q W F 9 7 1 s s e n r a h e r i w M W P p o t S 0 E R M 5 5 2 B Z V W F 0 8 2 l e ...

Страница 66: ...9 11 40 50 1 95 2 96 99 6 38 98 94 82 35 10 10 11 18 43 95 95 95 95 34 96 95 95 87 99 31 31 32 99 14 5 59 8 7 58 48 60 81 47 33 33 95 46 56 55 55 51 37 99 44 81 4 57 83 95 95 36 95 96 95 99 99 53 8 54 52 4 7 15 61 95 90 99 Oven Parts ...

Страница 67: ...Parts List 6 5 CABINET PARTS 85 95 95 19 85 23 95 95 95 22 17 86 95 95 95 95 95 73 16 12 3 41 95 95 39 20 21 95 95 97 84 97 Cabinet Parts ...

Страница 68: ...TS CONTROL PANEL PARTS MISCELLANEOUS 68 69 70 74 72 73 71 79 75 80 78 87 89 26 25 25 25 24 27 91 92 Attached to HV wire Mag Terminals Attached to Red Blue wires Inverter unit 95 28 29 64 65 66 62 63 67 67 67 67 30 Door Parts ...

Страница 69: ...KING CASE ACCESSORY PACK WRAP COVER DOOR PAD Non replaceable items DOOR PROTECTOR GREASE FILTER x 2 85 INSTALL MATERIAL ASSEMBLY 68 76 OPERATION MANUAL 77 Rack 75 TOP AND WALL TEMPLATE EXHAUST DAMPER ASSEMBLY 86 93 INSTALATION INSTRUCTIONS Packing and Accessories ...

Страница 70: ...Parts List 6 8 Notes ...

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