GE JVM1790SK - Profile 1.7 cu. Ft. Convection Microwave Service Manual

Also see for JVM1790BK - Profile 1.7 cu. Ft. Convection Microwave: Owner's manual Dimension Guide Service manual

NOTES:• A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FORANY REASON.• MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.• WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOTTHE WIRES.B. CHECKOUT PROCEDURES(1) CHECKOUT PROCEDURES FOR FUSE BLOWINGCAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.NOTES:• If the fuse is blown by an improper switch operation, replace the all Interlock switches, PCB Ass’y and thefuse at the same time. After replacing the the all Interlock switches, PCB Ass’y,Fuse with new ones, makesure that they are correctly connected.• Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page 7-12 when the primary interlock, secondary interlock switches and/or the interlock monitor switches areadjusted or replaced.7-19COMPONENTS TEST PROCEDURES RESULTSRELAY 2RELAY 111. Measure continuity.(ohm meter scale: Rx1)2. Remove the lead wires and operateoven at power level 1 through powerlevel 10.1. Measure continuity.(ohm meter scale: Rx1)2. Remove the lead wiresand operate oven atConvection Cooking.POWERLEVEL123456789104 sec6 sec8 sec10 sec12 sec14 sec16 sec18 sec20 sec22 sec18 sec16 sec14 sec12 sec10 sec8 sec6 sec4 sec2 sec0PROBLEMS CAUSESFuse blows immediately afterthe door is closed.Fuse blows immediately afterthe door is opened.Fuse blows when the door is closed and STARTkey is touched.Improper operation of the primary interlock, secondaryinterlock switches and/or the interlock monitor switch.Malfunction of the high voltage transformer; the highvoltage capacitor including the diode, the magnetron,the blower motor or the circuit board.ConvectionCooking StartOFF