GE MV1526W, MV1526B service manual Thermostat

Page 33

PROBLEM - C: Unit does not heat up even if display counts down when

START key is touched for "HIGH POWER" cooking.

1	Check: 1. PRIMARY AND SECONDARY INTERLOCK SWITCHES
1	2 . THERMOSTAT
	2 . THERMOSTAT

NO	Replace	Normal			Runs
continuity	circuit board	circuit board
Check the contact of		Poor contact	Correct	Normal	Runs
Check the contact of			seating	contact
relay 6(see page 7-18)
Contact	Check contact of
OK	connector S1
		Contact OK	Replace	Normal	Runs
			circuit board	circuit board

2

7-22

Measure resistance of H.V.Transformer (see page 7-15)

Resistance				Replace H.V.T.	Normal H.V.T.
incorrect					Normal H.V.T.
incorrect

	Normal	Check the continuity of
	resistance
		H.V.C. (see page 7-16)

Replace H.V.C.

Normal H.V.C.

Resistance

incorrect

Normal	Check the	Abnormal				Replace H.V.D.			Normal
resistance	continuity of H.V.D.								H.V.D.
	(see page 7-16)
	(see page 7-16)

Normal	Replace	Normal
	Magnetron	Magnetron
		Magnetron

Image 33

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 OperationService Information Precautions and Repair Service TipsPreliminary 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 Components Test Procedure Results SwitchesInterlock Continuity Test Test Procedures Test and Checkout PROCEDURES, and Trouble ShootingMagnetron HIGH-VOLTAGEHIGH-VOLTAGE Diode HIGH-VOLTAGE CapacitorFPC Connector Touch KEY Board Connectorkey CONMatrix Circuit for Power Level Checkout Procedures Checkout 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