MODEL SERIES:JVM2070_HTECHNICAL SERVICE GUIDEGE Consumer & IndustrialOver the RangeMicrowave OvenPUB # 31-9111 2/04

– 10 –Side Stirrer MotorThe side stirrer motor is located on the left side ofthe microwave oven.Resistance through the side stirrer motor fromthe powe

– 11 –Disconnect the electrical connector from themotor. Remove 2 screws that hold the motor inplace and remove the motor.Top Stirrer MotorResistance

– 12 –Cooling Fan and MotorResistance through the cooling fan motor fromthe power cord (L) to CN04 pin 7 is approximately24.7 ohms. The door (primary

– 13 –Magnetron Thermal Cutout (TCO)The magnetron TCO is located on the magnetronand shuts off when the magnetron temperaturereaches 150°F (65.5°C).Th

– 14 –Gas SensorThe gas sensor detects humidity changes duringsensor cook functions and transmits thisinformation to the main board.The gas sensor is

– 15 –Interior LightResistance through the interior light from theCN02 pin 7 to the power cord (L) is approximately24.9 ohms.RemovalNote: This compon

– 16 –Control PanelThe control panel contains the smart board, thetouchscreen panel, and a three-button circuitboard. Run the test for the control pan

– 17 –Primary Interlock System TestWARNING: Disconnect the oven from the powersupply.Door Sensing SwitchIsolate the switch and connect the ohmmeter to

– 18 –High Voltage CapacitorRemoval and ReplacementWARNING: Prior to servicing, be certain thecapacitor is discharged. Manually discharge byplacing an

– 19 –Surface LampsRemovalRemove the screw on the surface lens panel andopen the panel.Surface Lamp AssembliesResistance through the surface lamps fro

– 2 –IMPORTANT SAFETY NOTICEThe information in this service guide is intended for use byindividuals possessing adequate backgrounds of electrical,elec

– 20 –Control Performance TestSet Time:1. Touch OPTIONS on the HOME display.2. Touch SET CLOCK on the OPTIONS display.3. Using the numbers on the touc

– 21 –Diagnostics TestSimultaneously press the LIGHT and OFF keysfor 3 seconds. The diagnostics screen will appearin the LCD display.

– 22 –Performance Test1. Measure the line voltage (loaded). This test isbased on normal voltage variations of 108V to132V. Low voltage will lower outp

– 23 –Smart BoardThe smart board contains the power relay, LVT,vent blower triac, surface light relays, and othercomponents to perform the proper swit

– 24 –Strip CircuitsVent Motor Does Not WorkFan Motor Does Not WorkLouver Motor Does Not Work

– 25 –Note: The Magnetron Tube TCO automaticallyresets when the conditions return to normal. TheCavity TCO is not resetable. It must be replaced.Dead

– 26 –Interior Light Does Not WorkSurface Lamps Do Not Work

– 27 –Magnetron Does Not Work121 - Red2 - White3 - Blue4 - Black342Replace the HV transformer.Does the magnetron work?Replace the magnetron.Replace th

– 28 –Note: For servicing replacement use 16GA. 105°C thermoplastic covered leads or as noted on special leads.WARNING: Power must be disconnected bef

– 29 –Code No. : DE99-00125FWARNING: Power must be disconnected before servicing this appliance.Schematic

– 3 –PRECAUTIONS TO BE OBSERVED BEFORE AND DURINGSERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVEMICROWAVE ENERGY.A. DO NOT OPERATE OR ALLOW THE OVEN

– 30 –Illustrated Parts Catalog

– 31 –VIEW NUMBER CATALOG NUMBER DESCRIPTION QUANTITY1 WB15X10135 HANDLE WH 15 WB55X10673 DOOR-A ASM 16 WB55X10668 DOOR MAIN ASM 17 WB05X10012 DOOR

– 32 –VIEW NUMBER CATALOG NUMBER DESCRIPTION QUANTITY81 WB06X10436 HOOD DAMPER ASM 182 WB06X10165 BRACKET-V/T MOTOR 183 WB26X10138 MOTOR-VENTILATION

– 33 –OTR MICROWAVE OVEN WARRANTYFor the period of: GE will replace:Full one-year Entire ovenWarrantyWhat GE will not cover• Service trips to your ho

– 4 –Bottom and Hood Thermal Cutout (TCO) ...18Cavity

– 5 –ProductJ = GE Cooking ProductMicrowave OvenV = Over-the-Range ModelInstallationM = Mounts Under CabinetModel NumberNomenclatureJ V M 2 0 7

– 6 –Control FeaturesAfter pressing HELP:• Press PRODUCT DETAILS to find informationconcerning your model and serial number.• Press FEATURE HELP to fi

– 7 –Component Locator Views1 - Interior Light2 - Main and HV Transformer Fuses3 - Hidden Vent Switch and Motor4 - Vent Fan and Motor5 - Top Stirrer M

– 8 –1 - Magnetron2 - Magnetron Thermal Cutout (TCO)3 - High Voltage Transformer4 - Magnetron Cooling Fan Motor and Blade5 - High Voltage Capacitor6 -

– 9 –Microwave Removal and ComponentAccessNote: Some components can be accessedwithout removing the microwave. If the 2 endscrews on top of the outer