GE MV1526W, MV1526B Interlock Continuity Test, Components Test Procedure Results, Switches

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INTERLOCK CONTINUITY TEST

A. PRIMARY INTERLOCK SWITCH TEST

B. SECONDARY INTERLOCK SWITCH TEST

When the door is opened slowly, an audible click should be heard at the same time or successively at intervals and the latches should activate the switches with an audible click.

If the latches do not activate the switches when the door is closed, the switches should be adjusted in accordance with the adjustment procedure. Disconnect the wire lead from the primary switch. Connect the ohmmeter leads to the common (COM) and normally open (NO) terminal of the switch. The meter should indicate an open circuit in the door open condition.

When the door is closed, the meter should indicate a closed circuit.

When the primary switch operation is abnormal, make the necessary adjustment or replace the switch with the same type of switch.

Disconnect the wire lead from the secondary switch.

Connect the ohmmeter leads to the common (COM) and normally open (NO) terminals of the switch. The meter should indicate an open circuit in the door open condition. When the door is closed, the meter should indicate a closed circuit. When the secondary switch operation is abnormal, make the necessary adjustment or replace the switch only with the same type of switch.

C. MONITOR SWITCH TEST

Disconnect the wire lead from the monitor switch. Connect the ohmmeter leads to the common (COM) and normally closed (NC) terminals of the switch. The meter should indicate a closed circuit in the door open condition. When the door is closed, the meter should indicate an open circuit. When the monitor switch operation is abnormal, replace with the same type of switch.

NOTE: After repairing the door or the interlock system, it is necessary to do this continuity test before operating the oven.

COMPONENTS

 

TEST PROCEDURE

RESULTS

 

SWITCHES

Check for continuity of the

Door

Door

(Wire leads removed)

switch with an Ohm-meter

open

closed

 

Primary

NO

 

 

 

Switch

COM

 

 

 

 

 

 

 

Monitor

NC

 

 

 

Switch

COM

 

 

 

 

 

 

 

Secondary

 

 

 

 

Switch

COM

 

 

 

 

NO

 

 

 

NOTE : After checking for the continuity of switches, make sure that they are

 

connected correctly.

 

 

WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS.

TYPE NO. SZM-V16-FA-63 OR VP-533A-OF OR V-5230Q FOR PRIMARY SWITCH TYPE NO. SZM-V16-FA-62 OR VP-532A-OF OR V-5220Q FOR MONITOR SWITCH TYPE NO. SZM-V16-FA-63 OR VP-533A-OF OR V-5230Q FOR SECONDARY SWITCH

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Image 25 Contents
Microwave Oven Safety Precautions in this ManualPage Table of Contents Specifications Antenna Microwave RadiationGrounding Instructions InstallationControl Panel Operating InstructionsControl Panel Instructions Schematic Diagram Overall Circuit DiagramMatrix Circuit for Touch KEY Board General Precautions in USE General Information for ServiceFeatures and Specifications Features Trial OperationPrecautions and Repair Service Tips Service InformationPreliminary Equipment Microwave Leakage TestMeasurement with the Outer Case Removed Power Output MeasurementImportant Notes Disassembly InstructionsHOW to Insert the F.P.C. Connector HOW to Remove the F.P.C. ConnectorRemoving the OUT CASEFigure Wire Color Removing the Door Interlock Switches Figures 9,10Removing Magnetron Removing Door Figure Removing the Ventilation FAN ASS’Y Assembling DoorRemoving the Turntable Motor Interlock Mechanism Interlock SystemTest the Latch and Switch Sequence Switches Components Test Procedure ResultsInterlock Continuity Test Test Procedures Test and Checkout PROCEDURES, and Trouble ShootingMagnetron HIGH-VOLTAGEHIGH-VOLTAGE Diode HIGH-VOLTAGE CapacitorTouch KEY Board Connectorkey CON FPC ConnectorMatrix Circuit for Power Level Checkout ProceduresCheckout Procedures for Fuse Blowing RELAY2RELAY3 Problem B Checkout Procedures for Relay Problem aYES Good YESCheckout Procedures for Circuit Board Trouble Shooting Thermostat Page Fuse Exploded View Control Panel Oven Cavity Latch Board Interior 50FZZA Installation Schematic Diagram of P.C.B Printed Circuit Board July