GE JVM2070_H User's Manual
Contents
1. TRANS RED INTERNAL GND IN TRANS INRUSH RELAY qum H V CAPACITOR MAGNETRON BLK H V DIODE 7 HEAT SHRINK DOOR SENSE GAS ONER SWITCH TOP SENSOR CONNECTOR NOTE DOOR IS OPEN 0 06 08 007 20 o o 7 m o o pu rw 7 E 50 VIEW NUMBER CATALOG NUMBER DESCRIPTION QUANTITY 6 WBssxi668 DOORMANASM r 080510006 SPRNGKEY 2 9 w osxio0so PNHNGE 1 0200 HINGE GRILLE F HINGE GRILLE 36 WBosXio26 SOCKET LAMP ai wosxi0i26 BUTION LOCK wBosxi0s19 STIRRER TOP ASM 50 WBocxi2 HOLDERRACK e 54 7 wBosxi0s23 STIRRER SIDE ASM 60 26 10137 MOTORDRVEGIDE 1 66 WB38Xi0s7 CAMIOUVER r 69 WBo xiM42 CAMLOUVERASSY 1 2281 86 7 806 1012 BRACKETPOWERCORD 1 90 27 10166 TCO MAGNETRON 1 o weas SWNTCHMIRO f 08 18 10055 WIEHARNESSB 1 39 06 10527 COVERMOTORSUBASM 1 2 9999 49 40137 1 TEMPLATE TOP 9999 49 40239 1 REAR WALL TEMPLATE 9999 49 40329 USE amp CARE 9999 49 40330 INSTALLATION INSTRUCTION 32 OTR MICROWAVE OVEN WARRANTY For the period of GE will r2. Main Control Board DOOR SENSE SWITCH Surface Lamps Do Not Work POWER CORD AC 120V 60Hz L Main Control Beate COOKTOP LAMP CO 04 Pin 3 26 Magnetron Does Not Work Does continuity exist between the HV Replace the primary interlock switch or repair transformer black wire and power cord with No faulty wiring between the HV transformer and primary interlock closed door closed the primary interlock switch Yes Y Does continuity exist between the HV transformer blue wire and secondary interlock2 No blue wire thru HV transformer fuse Replace the HV transformer fuse or repair faulty wiring Yes Does continuity exist between the secondary interlock 2 blue wire power No Repair faulty wiring Yes secondary interlock 1 door closed and monitor interlock switch open door closed Does continuity exist between the HV transformer white wire to power cord thru No Repair faulty wiring Yes Replace the main control board Does the magnetron work No 1 Red 2 White Replace the HV capacitor Does the magnetron work 3 Blue 4 Black No Y Replace the HV transformer Does the magnetron work No y Replace the magnetron 97 Wiring Diagram WARNING Power must be disconnected befor
3. 0 ohms Door Open Infinite ohms Note Remove the wires from the switches before checking continuity 217 High Voltage Capacitor Removal and Replacement WARNING 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 screw and grill Lift the control panel up and remove Remove the screw from the capacitor brace Disconnect 3 wires from the capacitor Remove the capacitor and brace from the oven Remove the capacitor from the capacitor brace Bottom and Hood Thermal Cutout TCO The bottom TCO will interrupt the operation of the oven when it reaches 248 F 120 C The hood TCO is normally open switch When it reaches 158 70 C the vent motor turns on Removal procedures are the same for both TCOs Removal and Replacement Remove the hidden vent see Microwave Removal and Component Access Remove the screw and the grill see Hidden Vent Motor Lift the control panel up and remove Remove 2 wires from the TCO Remove the screw that holds the TCO in place and slide the tab of the TCO out of the oven frame Turntable Motor Resistance through the turntable motor from the CNO2 pin 4 to the power cord L is approximately 158 5 ohms The door primary and monitor in
4. 9 GE EE EE NN NE ss 13 ES EEE EE NE EE 14 ME VENN de E 15 PION fa EE EE 18 1 17 16 Pars t adl 30 113 o TREE m t 15 og MN EE E T osa 14 Magnetron Thermal Cutout 1 5 5 55 TE 19 Microwave Leakage Test 22 Microwave Removal and Component Access 9 NTN AN 5 Polo ir o 22 Primary Interlock System Test 17 ENN 29 Sense 0 21 10 OG EE EE ee ene 20 TE NE 10 ET 10 MPLA 23 eere EEE 24 Sl l CO 0 Om 19 SJ gen AE EEE Nm 19 Jo i 11 KN GE EEE EE OO Tm 11 POUGISER CCH DIS play EE 6 J yj i gt T TE 14 NOUS SOO EE EE 20 NIOLO RETRO m 18 AMY Mn 33 WV TA IND MEE 28 Nomenclature Model Number Product J GE Cooking Product Microwave Oven V Over the Range Model Installation M Mounts Under Cabinet Cavity Size cu ft 20 2 0 cu ft The nomenclature plate is located on the microwave cabinet inside the door In addition to model an
5. Stirrer Motor 6 Cavity Thermal Cutout TCO 7 Side Stirrer Motor 8 Magnetron Antenna Waveguide 9 Vent Tunnel 10 Gas Sensor Right Side View 1 Magnetron 2 Magnetron Thermal Cutout TCO High Voltage Transformer 4 Magnetron Cooling Fan Motor and Blade 5 High Voltage 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 Microwave Removal and Component Exhaust Fan SES Resistance through the exhaust fan from the Note Some components can be accessed power cord N to pin 7 is approximately without removing the microwave If the 2 end 28 7 ohms screws on top of the outer cover are accessible Removal see illustration below the hidden vent can be removed without removing the microwave from its Remove the microwave see Microwave Removal installation and Component Access Remove the screw on top of the microwave holding the exhaust adapter Note For easier removal and personal safety it in place then slide the exhaust adapter to the rear is recommended that 2 people remove the and remove microwave Unplug the microwave and remove it from the wall Top SE by removing three screws in the cabinet above the microwave Tilt the microwave forward and lift it off the lower tabs of the rear mounting plate Route the power cord through the hole Lift the fan ou
6. THE USER NOT TO OPERATE THE OVEN AND CONTACT THE MANUFACTURER IMMEDIATELY MAKE THE FOLLOWING SAFETY CHECKS ON ALL OVENS TO BE SERVICED BEFORE ACTIVATING THE MAGNETRON OR OTHER MICROWAVE SOURCE AND MAKE REPAIRS AS NECESSARY 1 INTERLOCK OPERATION 2 PROPER DOOR CLOSING 3 SEALAND SEALING SURFACES ARCING WEAR AND OTHER DAMAGE 4 DAMAGE TO OR LOOSENING OF HINGES AND LATCHES 5 EVIDENCE OF DROPPING OR ABUSE BEFORE TURNING ON MICROWAVE POWER FOR ANY TEST OR INSPECTION WITHIN THE MICROWAVE GENERATING COMPARTMENTS CHECK THE MAGNETRON WAVE GUIDE OR TRANSMISSION LINE AND CAVITY FOR PROPER ALIGNMENT INTEGRITY AND CONNECTIONS ANY DEFECTIVE OR MISADJUSTED COMPONENTS IN THE INTERLOCK MONITOR DOOR SEAL AND MICROWAVE GENERATION AND TRANSMISSION SYSTEMS SHALL BE REPAIRED REPLACED OR ADJUSTED BY PROCEDURE DESCRIBED IN THIS MANUAL BEFORE THE OVEN IS RELEASED TO THE OWNER A MICROWAVE LEAKAGE CHECK TO VERIFY COMPLIANCE WITH THE FEDERAL PERFORMANCE STANDARD SHOULD BE PERFORMED ON EACH OVEN PRIOR TO RELEASE TO THE OWNER Table of Contents Bottom and Hood Thermal 18 EEG GA HERES 13 Component Locator VIEWS EEE EE OR 7 COMPONETS EE NT 9 FETE RTT 6 CO OME IV EEE EE EN 16 GHO ie TE l u uu m 20 Cooling Fan and uu uuu u u m 12 Demonstration MOOG ve 21 6 EN 21 Bra e ee SWIG SS PE OT 16 PFIN NN
7. procedure for each function to exercise each pad Control and display should respond to each entry e Display should revert to Time Of Day after each CLEAR gt R4 a FA Sensor Test Quick Test Press and hold the OFF and LIGHT buttons for 3 seconds Note diagnostic number displayed 15 to 185 Normal 213 or higher Sensor failed to open sensor unplugged wiring or smart board Less than 6 Shorted sensor or smart board Caution Do NOT check the white and orange sensor leads Checking could damage sensor Note Black and red heater terminal leads should read 30 Q 20 Diagnostics Test Simultaneously press the LIGHT and OFF keys for 3 seconds The diagnostics screen will appear in the LCD display Sample Diagnostics Screen Displayed Information e MODEL Identified at power up by the keytail ID option e CODE VERSION The date the code file was sent to GEA for testing MM DD YY e HUMIDITY SENSOR The CUR current DET detection point MIN minimum MAX maximum humidity sensor data will update continuously The CUR value is the present A D value of the sensor DET is the value at the moment the humidity detection point was reached MIN is the lowest humidity point measured during entire feature s run MAX is the highest humidity value measured during the feature s run These data points are the dynamic measurements of the sensor not the ca
8. the microwave see Microwave Removal and Component Access Disconnect the 2 wires and remove the screws from the magnetron TCO ee 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 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 w
9. AZU 9 20 28 BLU WHT WHT BLU onc Q 0 ORG MOTOR CAPACITOR RED 0 0 RED 72 ee Fan Motor Does Not Work POWER CORD 120V 60Hz L N CAVITY 0 BOTTOM 0 100 0 C 212 32 MAIN FUSE 120 0 248 32 BLK BLK BLK BLK GRA BLK BLU BLK BLK WHT GND M G T T C O PRIMAR 150 60 302 140 FAN MOTOR BLK BLK BLK BLK BLK BLK BLK BLK WHT WHT 120V OV 24 Top Stirrer Side Stirrer or Drive Motor Does Not Work POWER CORD AC 120V 60Hz L N CAVITY T C O BOTTOM T C D 10070 C 212 327F MAIN FUSE 120076 348732 BLK BLK BLK SLK GRA BLK BLU BLK BLK WHT STIRRER MOTOR SIDE 6 7 T C O 150 606 302 140 F BLK BLK INTER LOCK S W DRIVE MOTOR 21V Dead Unit Cavity or Magnetron TCO Does Not Work CAVITY 0 MAIN FUSE 100 00 212 32 F BLK GRA BLK BLK LK M G T T C O a 150 60 C 302 140 F BLK LK 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 Bottom TCO Does Not Work POWER CORD 120V 60Hz N BOTTOM 0 120 06 248 32 BLK BLU BLK WHT HOOD 1 0 GND 40 70 C 104 158 NS BLU AZU Note The Bottom TCO is not resetable It must be replaced 25 Interior Light Does Not Work OVEN LAMP 120V BLK BLK WHT OV
10. ER SPACEMAKER 2 0 OVERVIEW e Press TROUBLESHOOTER to find troubleshooting tips for common microwave problems e Press SPACEMAKER 2 0 OVERVIEW to find an overview of the features of your microwave OFF WARNING Pressing OFF does not disconnect the appliance from the power supply Pressing OFF while on the HOME screen will put the touchscreen into standby mode and the display will be dark Press the touchscreen or HOME or open the door to wake up the display Pressing OFF while on any other screen will cancel the current screen and return the display to the HOME screen HOME HOME returns the display to the HOME screen displayed at any time The HOME screen is the starting point for setting any cooking or defrost program or for setting microwave options If the touchscreen is dark press the HOME button to activate the screen VENT Press VENT once for high fan speed Press a second time for medium fan speed a third time for low fan speed and a fourth time to turn the fan off Press BOOST for extra fan speed C BOOST The BOOST button turns the vent fan on HIGH LIGHT Press LIGHT once for bright light Press second time for the night light Press a third time to turn the light off 40 Component Locator Views Top View 1 Interior Light 2 Main and HV Transformer Fuses Hidden Vent Switch and Motor 4 Vent Fan and Motor 5 Top
11. OTTOM SWITCH MIDDLE Note For servicing replacement use 16GA 105 C thermoplastic covered leads or as noted on special leads COLOR SYMBOL EM WARNING Power must be disconnected before servicing this appliance BLACK BLK mm ETE ORANGE YELLOW GREEN IC 120V 60Hz L N AZURE VIOLET BOTTOM T C O POWER CORD 120 0 C 248 32 GROUND BLK BLU BLK BLK WHT VENT MOTOR GRA TRIAC Egi le Rom pe HOOD T C O 40 70 104 158 F VIL BLU AZU 20 28 0 BLU WHT O 2 2 3 EE 1 858 COOKTOP LAMP 1 BLK GRA COOKTOP LAMP 1 RELAY MAIN FUSE O BLK LOUVER MOTOR BRN O LOUVER RELAY 5 BRN BLK ov 120V BLK CAVITY T C 0 100 0 212 32 BLK LK Q M G T T C 0 2 150 60C 302 140 BLK BLK O lt gt gt 4 OVEN LAMP WHT WHT BLK BLK C ov 120V BLK BLK MAIN RELAY O PRIMARY INTER LOCK S LAMP amp Fan W ATR WHT WHT ov WHT PIN BLK BLK STIRRER MOTOR SIDE WHT BLK 21V STIRRER MOTOR UPPER T TABLE B MOTOR RELAY 4 21V INTERLOCK 1 O LOW POWER RELAY WHT MONITOR INTERLOCK SWITCH MIDDLE WHT WHT BLK BLK O WHT SECONDARY om INTERLOCK 2 H V TRANS FUSE HIGH POWER B BLU BLU O RELAY Bu BLU P T C 36 72 0 0452 WHT WHT 0000000000
12. TECHNICAL SERVICE GUIDE Over the Range Microwave Oven MODEL SERIES JVM2070 PUB 31 9111 2 04 IMPORTANT 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 major appliance may result in personal injury and property damage The manufacturer or seller cannot be responsible for the interpretation of this information nor can it assume any liability in connection with its use WARNING To avoid personal injury disconnect power before servicing this product If electrical power is required for diagnosis or test purposes disconnect the power immediately after performing the necessary checks RECONNECT ALL GROUNDING DEVICES If grounding wires screws straps clips nuts or washers used to complete a path to ground are removed for service they must be returned to their original position and properly fastened GE Consumer amp Industrial Technical Service Guide Copyright 2004 All rights reserved This service guide may not be reproduced in whole or in part in any form without written permission from the General Electric Company PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY A DO NOT OPERATE OR ALLOW THE OVEN TO BE OPERATED WITH THE DOOR OPEN IF THE OVEN OPERATES WITH THE DOOR OPEN INSTRUCT
13. ains the power relay LVT 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 CNO1 Ribbon connector Interfaces the smart board and the touch pad E T 4 AN e CNO2 Primary LTV Main Relay Inrush Relay and Turntable Interfaces the smart board and the key module CNO3 Vent Blower Connector Pin 1 AZU 1 Hood TCO Pin 3 VIL 1 Hood TCO PinSGRA 1 MainFuse Pin 7 BRN 1 04 Cooktop Lamp Relay Connector Turntable Motor Pin 5 PIN 1 Pin 7 WHT 9 Pin 9 BLK 7 Pin 1 BLU 2 Cooktoo Lamps Pin 3 YEL 1 Cooktop Lamps 06 Door Sensing Connector 24 Pin 1 ORG Door Sense Switch T Pin 2 ORG Door Sense Switch ER CNO7 Louver Motor Switches Connector Pin 1 YEL Louver Switch Pin 2 BLU Louver Switch Pin 3 RED Louver Switch Gas Sensing Connector Low Power Secondary Interlock To High Power Interlock Cooktop Lamps HV Transformer High Power Secondary Interlock To Low Power Interlock Power Cord N HV Transformer Fuse 9 Strip Circuits Louver Motor Does Not Work 120V 60Hz Main Control Board BOTTOM T C O LOUVER MOTOR MAIN FUSE 120 0 C 248 32 03 BRN BLK BLK BLK GRA BLK BLU BLK In Vent Motor Does Not Work AC 120V 60Hz L N BLK WHT 529 VENT MOTOR 40 70 C 104 158 HERES ee VIL Rm BLU
14. d serial number this plate also shows power ratings The Mini manual is located behind the hidden vent E 1 Luo EK Nomenclature Model Year Designator Case Color S Stainless W White C Bisque B Black Feature Pack Designates features the higher the number the more features Serial Number The first two numbers of the serial number identify the month and year of manufacture Example AG123456S January 2004 A JAN 2005 H D FEB 2004 G The letter designating F MAR 2003 F the year repeats every G APR 2002 D 12 years H MAY 2001 A L JUN 2000 Z Example M JUL 1999 V T 1974 R AUG 1998 T T 1986 S SEP 1997 5 1998 1996 R V NOV 1995 M Z DEC 1994 L Control Features Touchscreen Display The touchscreen display provides the access to all cook and defrost controls If the touchscreen is dark press the HOME button the touchscreen or open the door to access the menu For diagnostics displays see page 20 HELP Pressing HELP from the HOME screen allows you to locate feature information and helpful hints After pressing HELP e Press PRODUCT DETAILS to find information concerning your model and serial number e Press FEATURE HELP to find help locating information on the microwave features e Press SAFETY GUIDE to find help locating microwave safety information PRODUCT FEATURE DETAILS HELP SAFETY TROUBLE GUIDE SHOOT
15. e servicing this appliance O O O O O O O O O OOOOOOO SECONDARY INTERLOCK 1 LOW POWER RELAY C SECONDARY INTERLOCK 2 HIGH POWER B RELAY BLK 7 WHT 9 PIN 1 ORG 1 YEL 1 BLU 2 BRN 1 GRA 1 VIL 1 AZU 1 WHT 2 WHT 3 WHT 5 ORG ORG RED LOUVER S W NORMAL ON WHT 1 WHT 2 BLU 1 DOOR SENSE SWITCH TOP YEL RED BLK WHT ORG GAS SENSOR coor SYMBOL gt GROUND HARNESS LEADS PARTS LEADS BLK 12 BLK 11 BLK 1 EE T TABLE ORG 1 ORG MOTOR YEL 1 WHT 4 ul YEL nins COOKTOP LAMP WHT BLK 13 WHT 10 STIRRER ro MOTOR SIDE BLK 13 BLK 12 STIRRER WHT 7 MOTOR UPPER WHT 10 RED 1 H V CAPACITOR ORG 2 WHT 4 VENT H V DIODE BLU 5 MOTOR 4 BLK HEAT POWER CORD SHRINK BLK 14 LOUVER EN BRN 1 MOTOR LI BLK 4 He MGT UO T C 0 H V TRANS BLK 4 T C 0 1 60 1 2 WHT 8 WHT 9 ENT FAN ru lt cO WHT 7 I I I 1 I 1 BLK 10 BLK 11 i Ol o oo o rm e I cN mj 7 lt CN cO z e 5354 lt 5 lt x x x x El 2 lt x x X 3 3l 2l al x x l m m m VAY C5 em a a m m c 11 PRIMARY OVEN HOOD MAIN TRANS MOTOR MONITOR INTERLOCK LAMP 0 FUSE FUSE CAPACITOR INTERLOCK SWITCH B
16. ed 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 its installation Remove the hidden vent see Microwave Removal and Component Access Press the tab with a small screwdriver and lift the interior light cover up and out Squeeze the 2 tabs of the light socket and remove the light assembly Note When installing a new halogen bulb be sure to handle the bulb with a clean dry cloth Replace the halogen lamp with a 120VAC 20W GE halogen lamp bulb WB36X10213 15 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 the control panel and remove 1 Disconnect 8 electrical connectors and the ground wire from the control panel Door Interlock Switches The oven has 3 interlock switches All switches are removed the same Door Sensing and Primary Interlock Switches The primary interlock and monitor switches are located on the bottom of the plastic switch bracket The power relay is mounted on the smart board They are activated by the latch heads on the door When the door is opened the switches interrupt
17. eplace Full one year Entire oven From the date of the Any part of the oven which fails due to defect in materials or original purchase workmanship During this full one year warranty GE will also provide free of charge all labor and in home service to replace the defective part Limited ten year Magnetron tube From the second The magnetron tube if the magnetron tube fails due to a defect in through the tenth year materials or workmanship During the additional limited nine year from the date of the warranty you will be responsible for any labor or in home service costs Original purchase What GE will not cover e Service trips to your home to teach you how to use the product Replacement of home fuses or resetting of circuit breakers e Incidental or consequential damage caused by possible defects with this appliance Damage to the product caused by accident fire floods or acts of God e Failure of the product if it is used for other than its intended purpose or used commercially e Improper installation This warranty is extended to the original purchaser and any succeeding owner for products purchased for home use within the USA In Alaska the warranty excludes the cost of shipping or service calls to your home Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and yo
18. he cover D Top Stirrer Motor Top Stirrer Resistance through the top stirrer motor from the Removal 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 be closed to complete circuit Check motor circuit for 21 VAC when operating Open the oven door Pull the plastic rivet out of the stirrer cover Rotate the stirrer cover CCW until it stops and remove the stirrer cover Removal Remove the microwave see Microwave Removal and Component Access Disconnect the side stirrer motor electrical connector Remove 2 screws and ground wire from the duct and move the duct out of the way Note When assembling assure that the stirrer rides on the support in the cover Disconnect the electrical connector from the motor Remove 2 screws that hold the motor in place and remove the motor Ed Remove 3 screws from the fan motor mounting plate Slide the mounting plate forward to allow Resistance through the cooling fan motor from access to the fan blade Slide the fan blade off of the power L to 4 7 is approximately the fan motor shaft 24 7 ohms The door primary interlock must be closed to complete circuit Cooling Fan and Motor The cooling fan motor in series with the drive motors provides voltage reduction to 21 Removal Remove the microwave see Microwave Removal a
19. ire 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 Hidden Vent Motor The hidden vent motor is located behind the hidden vent on the right side Resistance through the hidden vent motor from the CNO3 pin 1 to the power cord N is approximately 28 8 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 its installation Remove the hidden vent see Microwave Removal and Component Access Remove 2 screws and the motor Interior Light Resistance through the interior light from the CNO2 pin 7 to the power cord L is approximately 24 9 ohms Removal Note This component may be able to be access
20. lculated values Pressing the DONE key terminates the diagnostic screen The screen returns to the previous or HOME screen The diagnostic screen will timeout and return to the previous screen after receiving no input for 5 minutes Error Message F1 Convection Open thermal sensor F2 Convection Shorted thermal sensor F3 Keypanel shorted for more than 60 seconds F4 Open humidity sensor F5 Shorted humidity sensor F10 Shorted touch panel Note Any F code will cause an error sound to beep for 3 cycles One cycle will sound 2 seconds on 1 second off Sample F Code page Demonstration Mode In demonstration mode everything will operate on the unit except the high voltage section To enter the demonstration mode disconnect the power for 30 seconds then reapply power Simultaneously press the HELP screen pad and the BOOST button for 3 seconds The word DEMO will appear in the LCD display To exit the demonstration mode disconnect the power for 30 seconds then reapply power Ol Microwave Leakage Test Performance Test 1 Place 275 ml of water in 600 ml beaker 1 WB64X5010 2 Place the beaker in the center of the oven shelf the meter to the 2450 MHz scale 2 4 Turn oven on for 5 minutes 5 Hold the probe perpendicular to the surface being tested and scan the surfaces at a rate of 1 inch sec 3 Test the following areas e The entire perimeter of the door and 4 con
21. nd Component Access Remove the screw at the top of the control panel Slide the control panel up and remove it Disconnect 8 electrical connectors and the ground wire from the control panel Move the TCO out of the way Disconnect the power transformer Remove the fan motor from the fan mounting plate and remove the 2 wires 12 Cavity Thermal Cutout TCO The cavity TCO is located on the top of the microwave oven on the left side of the forward vent duct The microwave oven shuts off when the temperature of the cavityT CO reaches 212 F 100 C The cavity TCO is a normally closed switch An open reading across the TCO indicates an overtemperature condition or failed TCO The cavity TCO is not resettable Removal Remove the microwave see Microwave Removal and Component Access Slide the cavity TCO from the two tabs and remove the 2 connectors Fuses The main and high voltage transformer fuses are located behind the hidden vent above the control panel Removal Remove the hidden vent see Microwave Removal and Component Access Remove the grille to access the fuses Magnetron Thermal Cutout TCO The magnetron TCO is located on the magnetron and shuts off when the magnetron temperature reaches 150 65 5 lt The magnetron TCO is normally closed switch An open reading across the TCO indicates failed TCO The magnetron TCO is resetable Removal Remove
22. t of the microwave and disconnect the electrical connector Place the microwave on a protected counter or table To remove the cover remove 2 screws from the left side 3 screws from the right side 5 screws from the top 5 screws from the rear and 2 screws from the bottom of the outer cover Open the microwave oven door Slide the hidden vent to the left and remove the hidden vent 9 Side Stirrer Motor The side stirrer motor 15 located on the left side of the microwave oven Resistance through the side stirrer motor from the power cord L to 4 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 circuit for 21 VAC when operating Removal Remove the microwave see Microwave Removal and Component Access Disconnect the wire connector to the side stirrer motor Remove the screw and turn the motor s turn CCW Note When installing stirrer motor be sure the locating pin is inserted in the motor mounting tab and the side stirrer is resting on the support in the cover prior to installing the screw Side Stirrer Removal Open the oven door Pull the plastic rivet out of the stirrer cover Rotate the stirrer cover CCW until it stops and remove the stirrer cover Remove the stirrer Note When assembling assure that the stirrer rides on the support in t
23. t 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 Disconnect 2 wires from the tab terminals on the circuit board provided in the control panel assembly The tab terminals are located in the area of the circuit board on the component side and are connected to the contacts of the power relay Check the state of the relay contacts using an ohmmeter The relay contacts should be open If the relay contacts are closed replace the circuit board Primary Interlock Switch Test 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 If improper operation is indicated replace the primary interlock switch Note The primary interlock switches are not adjustable and must be replaced if test is failed Interlocks Door Latch Switches Interlocks are designed as follows Monitor Interlock Switch middle lt Primary Interlock Switch bottom Door Sensing Switch e Door Closed 0 ohms Door Open Infinite ohms Monitor Interlock Switch e Door Closed Infinite ohms Door Open 0 ohms Primary Interlock Switch e Door Closed
24. terlock must be closed Removal Remove 5 screws from the bottom of the microwave oven cabinet and remove the bottom plate Remove the screw then rotate the motor CCW 1 8 turn Remove the turntable motor Disconnect 2 wires from the motor Surface Lamp Assemblies Surface Lamps Resistance through the surface lamps from the Removal Remove the screw on the surface lens panel and 62 ohms open the panel Removal Remove 5 screws from the bottom of the microwave oven cabinet and remove the bottom plate Pull the light out of the socket Note When installing new halogen bulb be sure to handle the bulb with clean dry cloth Replace the halogen lamp with 120VAG 20W GE halogen lamp bulb WB36X10213 Remove the screw from each lamp socket and remove the lamp assembly from the oven Disconnect the electrical connector 16 Troubleshooting Control Performance Test Set Time 1 Touch OPTIONS on the HOME display 2 Touch 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 enter a new time e Alternately touch each function pad and enter time temperature and power level selection for the function e Touch CLEAR after each function test to clear that function e Repeat the
25. the circuit to all components except the oven lamp cook cycle cannot take place until the door is firmly closed thereby activating both interlock switches The primary interlock system consists of the door sensing switch primary interlock switch and power relay Monitor Switch The monitor switch is operated indirectly by the bottom latch pawl The pawl operates cam switch which in turn activates the monitor switch The switch is intended to render the oven inoperative by means of blowing the monitor fuse when the contacts of the primary interlock switch and power relay fail to open when door is opened Functions When the door is opened the monitor switch contact closes At this time the primary interlock switch and power relay are in the closed position As the door goes to closed position the monitor switch contacts are first opened and then the door sensing switch and the primary interlock switch contacts close The oven has 3 interlock switches All switches are removed the same Removal Remove the hidden vent see Microwave Removal and Component Access Remove the grill Lift up the control panel and remove Remove 2 T20 Torx screws from the front of the frame and remove the door switch bracket Using small screwdriver release the tab and remove the door interlock switch from the door switch bracket Disconnect the electrical connector Primary Interlock System Test WARNING Disconnec
26. trol panel 5 The viewing surface of the door window 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 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 thermometer Do not use any other load or dish as results will very from standard Set the microwave oven at HIGH power for 2 minutes and 3 seconds Turn on the oven Record the water temperature The minimum difference between the initial and The exhaust vents 6 The maximum leakage is 4 MW CM 7 Record data on the service invoice and microwave leakage report Note The maximum allowable leakage is 5 MW 4 MW CM is used to allow for measurement and meter accuracy Inform the manufacturer of any oven found to have emission in excess of 5 MW CM Make repairs to bring the unit into compliance at no cost to the owner and try to determine the cause Instruct the owner not to use the oven if it has not been brought into compliance High Voltage Capacitor The high voltage capacitor has an internal shunt resistor to automatically discharge the capacitor when the oven turns off Under normal operation the capacitor should fully discharge within 30 seconds 22 ending temperature should be 40 F at 120V Smart Board The smart board cont
27. u may also have other rights which vary from state to state To know what your legal rights are in your state consult your local or state consumer affairs office or your state s Attorney General Warrantor General Electric Company Louisville KY 40225 c
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