Frigidaire CFMV157GB Service Manual Download Page 12 | Manualshive

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Page 12

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. VA R I A B L E C O O K I N G C O N T RO L

"HIGH".

Figure O-2. Oven Schematic-Cooking Condition

Figure O-1. Oven Schematic-Off Condition

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. CLOCK APPEARS ON DISPLAY.

FMV157GC

https://appliancetechmanuals.com

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Summary of Contents for CFMV157GB

Page 1: ...liance repair trade Electrolux Home Products cannot be responsible nor assume any liability for injury or damage of any kind arising from the use of this manual OVER THE RANGE MICROWAVE OVEN SERVICE MANUAL Models FMV157GS FMV157GB FMV157GM FMV157GQ FMV157GC CFMV157GS CFMV157GB CFMV157GM CFMV157GQ CFMV157GC Part 316439269 Publication 5995528261 November 2008 https appliancetechmanuals com ...

Page 2: ...SERVICE PERSONNEL 4 MICROWAVE MEASUREMENT PROCEDURE 5 FOREWORD AND WARNING 6 PRODUCT SPECIFICATIONS 7 GENERAL INFORMATION 7 OPERATION 10 TROUBLESHOOTING GUIDE 14 TEST PROCEDURE 16 TOUCH CONTROL PANEL ASSEMBLY 26 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 30 SCHEMATIC DIAGRAM 38 WIRING DIAGRAM 39 EXPLODED PARTS DIAGRAM 40 PACKING AND ACCESSORIES 44 https appliancetechmanuals com ...

Page 3: ...aired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner RD8100U BEFORE SERVICING Before servicing an operative unit perform a microwave emission check as per the Microwave Measurement Procedure outli...

Page 4: ... primary of the power transformer 5 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 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 Reconnect the leads to the primary of the ...

Page 5: ...n cavity 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 ...

Page 6: ...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 not any other visible damage with the oven Servicing and repair work must be carried out only by trained service personnel DANGER Certaininitialpartsareintentionallynotgroundedandpresent a risk of electrical shock only during se...

Page 7: ...approx 20 of Full Power P 10 approx 10 of Full Power P 0 No power throughout the cooking time Popcorn pad Reheat pad Cook pad Defrost pad Number selection pads Power Level pad Timer Clock pad Light button Fan button Clear Off button START Plus 1 Min button Oven Cavity Light 30W x 1 Incandescent light bulb Safety Standard UL Listed FCC Authorized DHHS Rules CFR Title 21 Chapter 1 Subchapter J Weigh...

Page 8: ...ted inside the cabinet directly above the Microwave Oven Hood system mounting location 1 Oven door with see through window 2 Door hinges 3 Waveguide cover 4 Turntable motor shaft 5 Oven lamp It will light when oven is operating or door is open 6 Door latches The oven will not operate unless the door is securely closed 7 Auto Touch control panel 8 Time display Digital display 99 minutes 99 seconds ...

Page 9: ...Page 9 CONTROL PANEL https appliancetechmanuals com ...

Page 10: ...ooling fan motor the turntable motor and the high voltage components are de energized and the digital read out displays the time still remaining in the cook cycle when the door was opened 7 The monitor switch is electrically monitoring the of the primary interlock switch and door sensing switch is mechanically associated with the door so that it will function in the following sequence 1 When the d...

Page 11: ...xcept 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 VENTING The air handing is the same as VERTICAL VENTING except that the final air discharge is directed horizontally through the upper front of the oven into the kitchen IN this case the accessory charcoal filter RK 240 must be provided to filter the...

Page 12: ... 2 COOKING TIME PROGRAMMED 3 VARIABLE COOKING CONTROL HIGH Figure O 2 Oven Schematic Cooking Condition Figure O 1 Oven Schematic Off Condition SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 CLOCK APPEARS ON DISPLAY FMV157GC https appliancetechmanuals com ...

Page 13: ...BLE MOTOR The turntable motor rotates the turntable located on the bottom of the oven cavity so that the foods on the turnta ble cook evenly during cooking Turntable will turn in either COOLING FAN MOTOR The cooling fan motor drives a blade which draws external cool air This cool air is directed through the air vanes sur rounding the magnetron and cools the magnetron This air is channelled through...

Page 14: ...16 KIT as an assembly IMPORTANT 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 Discharge high voltage capacitor 4 Disconnect the leads to the primary of...

Page 15: ...le motor does not operate Oven lamp lights and fan motor operate Oven does not go into cook cycle when START pad is touched Oven seems to be operating but little or no heat is produced in oven load Food incompletely cooked or not cooked at all at end of cook cycle Oven goes into a cook cycle but extremely uneven heating is produced in oven load food Variable cooking does not operate properly excep...

Page 16: ...bilizes Record the temperature of the water 2 Place the cup of water in the oven Operate oven at POWER 10 HIGH selecting more than 60 seconds cook time Allow the water to heat for 60 seconds measuring with a stop watch second hand of a watch or the digital read out countdown 3 Remove the cup from the oven and again measure the temperature making sure to stir the thermometer or thermocouple through...

Page 17: ...ds 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 NOTE Be sure to use an ohmmeter that will supply a forward bias voltage of more than 6 3 volts HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE 1 Disco...

Page 18: ...E TEMPERATURE FUSE G PRIMARY INTERLOCK SYSTEM TEST DOOR SENSING 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 Isolate the switch and connect the ohmmeter to the common 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...

Page 19: ...d the primary interlock relay are operating properly according to the above Switch Test Procedure Disconnect the wire lead from the monitor switch COM terminal Check the monitor switch operation by using the ohmmeter as follows When the door is open the meter should indicate a closed circuit When the monitor switch actuator is pushed by a screw driver through the lower latch hole on the front plat...

Page 20: ... 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 If the motor does not turn touch the FAN button 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 assembly If 120 Volts does not appear check the motor circ...

Page 21: ...outer case is installed 6 Run the oven and check all functions The following symptoms indicate a defective key unit a When touching the pads a certain pad produces no signal at all b When touching a number pad two figures or more are displayed c When touching the pads sometimes a pad produces no signal If the key unit is defective 1 Disconnect the power supply cord and then remove outer case 2 Ope...

Page 22: ...ter Use the Key unit matrix indicated on the control panel schematic and place a jumper wire between the pins that correspond to the CLEAR OFF 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 u...

Page 23: ...ng 13 Re install the hood intake duct R 14 Re install the outer case cabinet 15 Reconnect the power supply cord after the outer case is installed 16 Run the oven and check all functions O DEFROST CENTER TEST 1 Open the door 2 Place one cup of water in the center of the turntable tray in the oven cavity 3 Close the door 4 Touch the DEFROST pad once 5 Touch the number pad 2 6 Touch the number pad 5 ...

Page 24: ...AL OF OVEN FROM WALL and OUTER CASE REMOVAL 2 Open the door and block it open 3 To discharge high voltage capacitor wait for 60 seconds 4 Remove the hood intake duct R 5 Disconnect the leads to the primary of the power transformer 6 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 7 After that procedure re connect the power supply cord 8 Follo...

Page 25: ...ETER Between N and H Open Circuit Between terminal N and LOAD Short Circuit Between terminal H and LOAD Short Circuit If incorrect readings are obtained replace the noise filter 6 Reconnect all leads removed from components during testing 7 Re install the outer case cabinet 8 Reconnect the power supply cord after the outer case is installed 9 Run the oven and check all functions NOISE FILTER UNIT ...

Page 26: ...the oven lamp and hood lamp 8 Indicator Circuit This circuit consists of 22 segments and 3 common electrodes using a Light Crystal Display 9 Back Light Circuit A circuit to drive the back light Light emitting diodes LD1 LD4 The touch control section consists of the following units as shown in the touch control panel circuit 1 Key Unit 2 Control Unit The Control unit consists of LSI Unit and Power ...

Page 27: ...ponding signal out of P20 P21 P22 P25 and P26 will be input into P46 When no key is touched the signal is held at H level 21 P45 IN Signal similar to P46 When either G11 line on key matrix is touched a corresponding signal will be input into P45 22 P44 IN Signal similar to P46 When either G10 line on key matrix is touched a corresponding signal will be input into P44 23 P43 IN Signal similar to P4...

Page 28: ...minal not used 44 P14 OUT Hood motor driving signal To turn on and off relay RY4 L level During Hood motor ON H level During Hood motor OFF 45 47 P13 P11 OUT Terminal not used 48 50 SEG24 SEG22 OUT Terminal not used 51 72 SEG21 SEG0 OUT Segment data signal Connected to LCD The relation between signals are as follows LSI signal Pin No LCD Pin No LSI signal Pin No LCD Pin No SEG 21 51 SEG21 1 SEG 10...

Page 29: ... the oven itself is so short that the two can t be separated For those models check and repair all the controls sensor related ones included of the touch control panel while keeping it connected to the oven B On some models the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other For those models it is possible to check and...

Page 30: ...oor does not close firmly 2 Door hinge support or latch hook is damaged 3 The door gasket or seal is damaged 4 The door is bent or warped 5 There are defective parts in the door interlock system 6 There are defective parts in the microwave generating and transmission assembly 7 There is visible damage to the oven Do not operate the oven 1 Without the RF gasket Magnetron 2 If the wave guide or oven...

Page 31: ...ASE 2 DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING POWER TRANSFORMER REMOVAL 1 Disconnect the power supply cord remove the oven Re install from wall and remove outer case Refer to procedure of REMOVAL OF OVEN FROM WALL AND OUTER CASE REMOVAL And proceed as follows 2 Open the door and block it open 3 To discharge the high voltage capacitor wait for 60 seconds 4...

Page 32: ... 6 Disconnect high voltage wire from capacitor HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL 7 Remove one 1 screw holding capacitor holder and high voltage rectifier to the fan duct 8 Disconnect the high voltage rectifier assembly from the high voltage capacitor 9 Now the high voltage rectifier assembly is free Remove capacitor from the holder 10 Now the high voltage capacitor is free ...

Page 33: ... INSTALLATION 1 Install the fan blade to the fan motor shaft according to the following procedure 2 Pick the fan blade by one hand and insert the fan motor shaft to the fan blade hole by another hand screws Do not hit the fan blade with excesive force when installing because the bracket may be disfigured Make sure that the fan blade rotates smooth after installation Make sure that the axis of the ...

Page 34: ...ing the control panel to the oven cavity front face plate CONTROL PANEL ASSEMBLY CONTROL UNIT AND KEY UNIT REMOVAL 1 Disconnect the power supply cord 7 Release the control panel from the oven cavity front face plate by lifting it up 8 Disconnect the wire leads from the relays RY1 and RY2 9 Disconnect the connectors CN A CN C and CN E from the control unit 10 Remove the control panel assembly from ...

Page 35: ...om the latch hook by pushing the one 1 stopper tab holding each switch 10 Now each switch is free Re install 1 Re install each switch in its place The primary interlock switch is in the lower position door sensing switch is in the upper position and the monitor switch is in the middle position 2 Re connect wire leads to each switch Refer to pictorial diagram 3 Secure the latch hook with two 2 moun...

Page 36: ...wer oven hinges are inserted into the upper an lower door hinge pins 5 Make sure the door is parallel with oven face lines left and upper side lines and door latch heads pass through latch holes correctly 6 Re install the door stopper to the door assembly 7 Re install the hood exhaust louver to the oven cavity front face plate with the three 3 screws Note After any service to the door A Make sure ...

Page 37: ...er and between the choke cover and the door frame as shown Figure C 3 to free engaging parts 9 Pry the choke cover by inserting a putty knife in order shown in Figure C 3 10 Now choke cover is free from door panel and door frame NOTE When carrying out any repair to the door do not bend or warp the slit choke tabs on the door panel assembly to prevent microwave leakage DOOR DISASSEMBLY DOOR FRAME A...

Page 38: ...LY SINGLE PHASE PRIMARY INTERLOCK UPPER 1 2 0 0 BOTTOM THERMAL CUT OUT MGT THERMAL CUT OUT 1 6 0 95 CAVITY THERMAL CUT OUT 1 10 0 DOOR SENSE SWITCH BOTTOM 27 OG 31 WH 32 YW 24 BK 25 BL 26 GY 5 RD 30 WH 28 GN 29 YW 23 GN 21 YW 19 YW 20 BL 6 YW 17 BK 16 WH 15 WH 18 OG 7 YW 8 BK 10 BK 22 BR H V DIODE H V TRANS FA F 11 H V CAPACITOR Schematic Diagram Warning Power must be disconnected before servicing...

Page 39: ...YW 19 YW 21 COOKTOP LAMP WH 12 BK 10 POWER RELAY WH 30 GN 28 YW 29 OG 27 BL 25 VENT MOTOR CAVITY THERMOSTAT BK 2 BK 1 BK 2 BK 3 MGT THERMOSTAT BOTTOM THERMOSTAT BK 4 BK 3 GY 26 BK 24 HOOD THERMOSTATA OG 27 WH 31 YW 32 DOOR SENSING SWITCH YW 7 YW 6 PRIMARY SWITCH BK 4 WH 9 MONITOR SWITCH WH 11 BK 8 YW 29 GN 28 MOTOR CONDENSER BK WH BK WH GND NOISE FILTER BK 1 WH 12 OUT IN BK WH POWER CORD BK 10 WH ...

Page 40: ...Page 40 OVEN CABINET https appliancetechmanuals com ...

Page 41: ...der Lens cooktop lamp glass Cover lamp Filter grease Plate mounting rear FMV157G OVEN CABINET POS NO 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 DESCRIPTION Grille exhaust Cover control shield right Cover lamp oven cavity Hardware Kit installation Filter charcoal inside exhaust Motor turntable Coupler turntable motor Support turntable ring Tray turntable glass Duct cooling fa...

Page 42: ...Page 42 11 07 6 CONTROL PANEL DOOR MISC https appliancetechmanuals com ...

Page 43: ...ntrol mount bracket Control Board printed circuit Door Assembly Handle Assy w holder Panel outer door Panel glass outer door Panel inner door Spring door latch Latch door Frame choke cover inner door FMV157G CONTROL PANEL DOOR MISC Functional Parts Non Illustrated Parts https appliancetechmanuals com ...

Page 44: ...SORY PACK WRAP COVER DOOR PAD Non replaceable items DOOR PROTECTOR GREASE FILTER x 2 77 INSTALL MATERIAL ASSEMBLY 61 69 OPERATION MANUAL 70 TOP WALL TEMPLATE EXHAUST DAMPER ASSEMBLY 78 50 INSTALLATION INSTRUCTIONS PACKING AND ACCESSORIES https appliancetechmanuals com ...

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