GE JVM2070_H manual Magnetron, Gas Sensor, Transformer, Removal

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Magnetron

Magnetron

The magnetron is located behind the fan mounting plate.

Removal

WARNING: Prior to servicing the magnetron, be certain the capacitor is discharged. Manually discharge by placing an insulated-handle screwdriver between the diode connection of the capacitor and the oven chassis ground.

Remove the microwave (see Microwave Removal and Component Access). Remove the TCO and the magnetron electrical connectors. Remove 4 nuts from the top of the magnetron and remove the screw and brace. Remove the magnetron.

Gas Sensor

The gas sensor detects humidity changes during sensor cook functions and transmits this information to the main board.

The gas sensor is located in the air exhaust duct, behind the grille on the left side.

To check, run diagnostics (see Diagnostics Test).

Removal

Remove the hidden vent (see Microwave Removal and Component Access). Slide white plastic retainer forward and pull the gas sensor down.

Gas Sensor

Transformer

The transformer is located behind the fan mounting plate below the magnetron.

Resistance through the transformer from the power cord (L) to the high-power secondary interlock (blue wire) is approximately 0.32 ohms. The door (primary and monitor interlock) must be closed.

Resistance through the transformer from the high-power secondary interlock (blue wire) to the low-power secondary interlock (single white wire) is approximately 28.7 ohms. The door (monitor interlock) must be closed.

Removal

WARNING: Prior to servicing the transformer, be certain the capacitor is discharged. Manually discharge by placing an insulated-handle screwdriver between the diode connection of the capacitor and the oven chassis ground.

Remove the microwave (see Microwave Removal and Component Access). Remove the screws and the bottom panel. Disconnect electrical connectors. Remove the white and red wires from the capacitor and the red wires from the magnetron.

Caution: The transformer is heavy.

Remove 4 screws from the bottom that hold the transformer in place.

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Contents TECHNICAL SERVICE GUIDE PUB #2/04 Over the Range Microwave Oven MODEL SERIES JVM2070HRECONNECT ALL GROUNDING DEVICES IMPORTANT SAFETY NOTICETechnical Service Guide Copyright GE Consumer & IndustrialA. DO NOT OPERATE OR ALLOW THE OVEN TO BE OPERATED WITH THE DOOR OPEN Table of Contents Nomenclature InstallationFeature Pack Model NumberHELP Control FeaturesTouchscreen Display HOMEComponent Locator Views Top View3 - High Voltage Transformer Right Side View1 - Magnetron 2 - Magnetron Thermal Cutout TCO 4 - Magnetron Cooling Fan Motor and Blade 5 - High Voltage CapacitorExhaust Fan Microwave Removal and Component AccessComponents RemovalSide Stirrer Motor Side StirrerTop Stirrer Motor Top StirrerCooling Fan and Motor Fuses Cavity Thermal Cutout TCOMagnetron Thermal Cutout TCO Transformer MagnetronGas Sensor Hidden Vent Motor Interior LightMonitor Switch Door Interlock SwitchesDoor Sensing and Primary Interlock Switches Control PanelPower Relay Interlocks Door Latch SwitchesDoor Sensing Switch Primary Interlock Switch TestBottom and Hood Thermal Cutout TCO Removal and ReplacementHigh Voltage Capacitor Turntable MotorSurface Lamp Assemblies Surface LampsSensor Test Quick Test TroubleshootingControl Performance Test Demonstration Mode Diagnostics TestError Message Displayed InformationHigh Voltage Capacitor Microwave Leakage TestPerformance Test CN04 - Cooktop Lamp Relay Connector CN01 - Ribbon connectorCN03 - Vent Blower Connector CN06 - Door Sensing ConnectorFan Motor Does Not Work Strip CircuitsLouver Motor Does Not Work Vent Motor Does Not Work Dead Unit - Bottom TCO Does Not Work Top Stirrer, Side Stirrer, or Drive Motor Does Not WorkDead Unit - Cavity or Magnetron TCO Does Not Work FAN MOTORInterior Light Does Not Work Surface Lamps Do Not Work 3 - Blue Magnetron Does Not Work2 - White BlackWiring Diagram WARNING Power must be disconnected before servicing this applianceSchematic Code No. DE99-00125FIllustrated Parts Catalog DESCRIPTION VIEW NUMBERCATALOG NUMBER QUANTITYPLATE MOUNTING ASM GE will replace WarrantyFor the period of Full one-year