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GE JVM2070_H manual

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Table of contents for the manual

  • Page 1

    MODEL SERIES: JVM2070_H TECHNICAL SER VICE GUIDE GE Consumer & Industrial Over the Range Microwave Oven PUB # 31-9111 2/04[...]

  • Page 2

    – 2 – IMPORT ANT SAFETY NOTICE The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpre[...]

  • Page 3

    – 3 – PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO A VOID POSSIBLE EXPOSURE TO EXCESSIVE MICROW A VE ENERGY . A . DO NOT OPERA TE OR ALLOW THE OVEN T O BE OPERA TED WITH THE DOOR OPEN. B. IF THE OVEN OPERA TES WITH THE DOOR OPEN, INSTRUCT THE USER NOT T O OPERA TE THE OVEN AND CONT ACT THE MANUF ACTURER IMMEDIA TEL Y . C . MAKE THE[...]

  • Page 4

    – 4 – Bottom and Hood Thermal Cutout (TCO) .................................................................................................... 1 8 Cavity Thermal Cutout (TCO) ...................................................................................................................... 1 3 Component Locator Views ... ... .. ... ... .. .[...]

  • Page 5

    – 5 – Product J = GE Cooking Product Microwave Oven V = Over-the-Range Model Installation M = Mounts Under Cabinet Model Number Nomenclature J V M 2 0 7 0 W H The nomenclature plate is located on the microwave cabinet inside the door . In addition to model and serial number , this plate also shows power ratings. The Mini-manual is located behin[...]

  • Page 6

    – 6 – Control Features After pressing HELP: • Press PRODUCT DET AILS to find information concerning your model and serial number . • Press FEA TURE HELP to find help locating information on the microwave features. • Press SAFETY GUIDE to find help locating microwave safety information. For diagnostics displays, see page 20. HELP Pressing [...]

  • Page 7

    – 7 – Component Locator Views 1 - Interior Light 2 - Main and HV T ransformer Fuses 3 - Hidden V ent Switch and Motor 4 - V ent Fan and Motor 5 - T op S tirrer Motor 6 - Cavity Thermal Cutout (TCO) 7 - Side S tirrer Motor 8 - Magnetron Antenna W aveguide 9 - V ent T unnel 10 - Gas Sensor T op View 7 2 3 4 5 6 8 9 10 1[...]

  • Page 8

    – 8 – 1 - Magnetron 2 - Magnetron Thermal Cutout (TCO) 3 - High V oltage Transformer 4 - Magnetron Cooling Fan Motor and Blade 5 - High V olt age Capacitor 6 - Door Sensing Switch (Primary Interlock and Monitor Switch in plastic mount - not shown) 7 - Bottom Thermal Cutout (TCO) 8 - Hood Thermal Cutout (TCO) Right Side View 2 1 3 5 4 6 7 8[...]

  • Page 9

    – 9 – Microwave Removal and Component Access Note: Some components can be accessed without removing the microwave. If the 2 end screws on top of the outer cover are accessible ( see illustration below ), the hidden vent can be removed without removing the microwave from its installation. Note: For easier removal and personal safety , it is reco[...]

  • Page 10

    – 10 – Side Stirrer Motor The side stirrer motor is located on the left side of the microwave oven. Resistance through the side stirrer motor from the power cord (L) to CN04 pin 5 is approximately 6.7 ohms. Isolated, the side stirrer motor is approximately 7.0 ohms. The door (primary interlock) must be closed to complete circuit. Check motor ci[...]

  • Page 11

    – 11 – Disconnect the electrical connector from the motor . Remove 2 screws that hold the motor in place and remove the motor . T op Stirrer Motor Resistance through the top stirrer motor from the power cord (L) to CN04 pin 5 is approximately 6.7 ohms. Isolated, the top stirrer motor is approximately 7.0 ohms. The door (primary interlock) must [...]

  • Page 12

    – 12 – Cooling Fan and Motor Resistance through the cooling fan motor from the power cord (L) to CN04 pin 7 is approximately 24.7 ohms. The door (primary interlock) must be closed to complete circuit. The cooling fan motor , in series with the drive motors, provides voltage reduction to 21 V AC. Removal Remove the microwave (see Microwave Remov[...]

  • Page 13

    – 13 – Magnetron Thermal Cutout (TCO) The magnetron TCO is located on the magnetron and shuts off when the magnetron temperature reaches 150°F (65.5°C). The magnetron TCO is a normally closed switch. An open reading across the TCO indicates a failed TCO. The magnetron TCO is resetable Removal Remove the microwave (see Microwave Removal and Co[...]

  • Page 14

    – 14 – 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. T o check, run diagnostics ( see Diagnostics T est ). Removal Remove the hidden vent (see Microwave Removal and Component [...]

  • Page 15

    – 15 – Interior Light Resistance through the interior light from the CN02 pin 7 to the power cord (L) is approximately 24.9 ohms. Removal Note: This component may be able to be accessed without removing the microwave. If the 2 end screws on top of the outer cover are accessible, the hidden vent can be removed without removing the microwave from[...]

  • Page 16

    – 16 – Control Panel The control panel contains the smart board, the touchscreen panel, and a three-button circuit board. Run the test for the control panel (see Control Performance Test ). The control panel is replaced as an assembly . Removal Remove the hidden vent (see Microwave Removal and Component Access ). Remove the grille. Lift up on t[...]

  • Page 17

    – 17 – Primary Interlock System T est W ARNING : Disconnect the oven from the power supply . Door Sensing Switch 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 door closed. Power Relay Disco[...]

  • Page 18

    – 18 – High V oltage Cap acitor Removal and Replacement W ARNING: Prior to servicing, 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 hidden vent (see Microwave Removal and Component Access ). Remove the sc[...]

  • Page 19

    – 19 – Surface Lamps Removal Remove the screw on the surface lens panel and open the panel. Surface Lamp Assemblies Resistance through the surface lamps from the CN04 pin 3 to the power cord (N) is approximately 62 ohms. Removal Remove 5 screws from the bottom of the microwave oven cabinet and remove the bottom plate. Remove the screw from each[...]

  • Page 20

    – 20 – Control Performance T est Set T ime: 1 . T ouch OPTIONS on the HOME display . 2 . T ouch SET CLOCK on the OPTIONS display . 3 . Using the numbers on the touchscreen, enter the time of day . Press ENTER when finished or CLEAR to erase the time you entered. 4 . Select AM or PM from the touchscreen. Press ENTER when finished or BACK to ente[...]

  • Page 21

    – 21 – Diagnostics T est Simultaneously press the LIGHT and OFF keys for 3 seconds. The diagnostics screen will appear in the LCD display . Sample Diagnostics Screen Displayed Information • MODEL - Identified at power-up by the keytail ID option. • CODE VERSION - The date the code file was sent to GEA for testing (MM-DD-YY). • HUMIDITY SE[...]

  • Page 22

    – 22 – Performance T est 1 . Measure the line voltage (loaded). This test is based on normal voltage variations of 108V to 132V . Low voltage will lower output power and temperature rise. 2 . Place a beaker (WB64X0073) containing 1 liter of water (1000ml, 59°F - 75°F) on the turntable and record the starting water temperature with a thermomet[...]

  • Page 23

    – 23 – Smart Board The smart board contains the power relay , L VT , vent blower triac, surface light relays, and other components to perform the proper switching circuits. Several disconnect plugs are also located on the smart board. CN01 - Ribbon connector . Interfaces the smart board and the touch pad. CN02 - Primary L T V , Main Relay , Inr[...]

  • Page 24

    – 24 – Strip Circuits V ent Motor Does Not Work Fan Motor Does Not Work Louver Motor Does Not Work[...]

  • Page 25

    – 25 – Note: The Magnetron Tube TCO automatically resets when the conditions return to normal. The Cavity TCO is not resetable. It must be replaced. Dead Unit - Cavity or Magnetron TCO Does Not Work T op Stirrer , Side Stirrer , or Drive Motor Does Not Work Note: The Bottom TCO is not resetable. It must be replaced. Dead Unit - Bottom TCO Does [...]

  • Page 26

    – 26 – Interior Light Does Not Work Surface Lamps Do Not Work[...]

  • Page 27

    – 27 – Magnetron Does Not Work 1 2 1 - Red 2 - White 3 - Blue 4 - Black 3 4 2 Re pl ac e t he HV t rans fo r me r . Do es t he ma gn etron w ork? Rep la c e t h e m a gn et r on . Rep lace th e pri ma r y in t er lo ck swit ch or r epai r fau l ty w i ring be tw ee n th e HV tra nsfor m er an d the pri m ary in t er lo ck switch. Do es continu [...]

  • Page 28

    – 28 – Note: For servicing replacement use 16GA. 105°C thermoplastic covered leads or as noted on special leads. W ARNING: Power must be disconnected before servicing this appliance. Wiring Diagram[...]

  • Page 29

    – 29 – Code No. : DE99-00125F W ARNING: Power must be disconnected before servicing this appliance. Schematic[...]

  • Page 30

    – 30 – Illustrated Part s Cat alog[...]

  • Page 31

    – 31 – V I EW NUM BER CAT AL O G NUM BER DES CRI P T I O N Q UANT I T Y 1 W B 15X 10135 HANDLE W H 1 5 W B 55X 10673 DOOR -A AS M 1 6 W B 55X 10668 DOOR MA I N A S M 1 7 W B 05X 10012 DOOR - KEY 2 8 W B 05X 10006 S P RI NG - KEY 2 9 W B 06X 10060 P I N-H I NGE 2 10 W B 06X 10516 FILM-DOOR 1 11 W B 55X 10669 CH OK E COV E R 1 12 W B 56X 10461 DO[...]

  • Page 32

    – 32 – V I EW N UM BER CAT AL O G NUM BER DES CRI P T I O N Q UANT I T Y 81 W B 06X 10436 H OO D DAM P E R A S M 1 82 W B 06X 10165 BRA CKE T -V / T MOT O R 1 83 W B 26X 10138 MOT O R- V E NT ILA T ION 1 84 W B 56X 10446 P LA T E M OUNT IN G A S M 1 85 W B 01X 10071 NU T T OP MOUNT IN G 1 86 W B 06X 10122 B RA CKE T -P OW E R CORD 1 87 W B 56X [...]

  • Page 33

    – 33 – OTR MICROW A VE OVEN W ARRANTY For the period of: GE will replace: Full one-year Entire oven W arranty What GE will not cover • Service trips to your home to teach you how to use the product. • Replacement of home fuses or resetting of circuit breakers. • Incidental or consequential damage caused by possible defects with this appli[...]