Maytag AMV1162AAB, MMV1153AAB, AMV5164AAB, AMV5164ACB, MMV5165AABMMV5165AA Service

...

Service

This manual is to be used by qualified appliance technicians only. Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person.

2004 Over the Range Domestic Microwaves

This Base Manual covers general information

Refer to individual Technical Sheet

for information on specific models

This manual includes, but is

not limited to the following:

UMV1152BAB/W/Q/S MMV1153AAB/W AMV1162AAB/W/Q/S AMV4204AAB/W/Q MMV4205AAB/W/Q/S AMV5164AAB/W/Q/S AMV5164ACB/W/S MMV5165AAB/W/Q/S AMV5206AAB/W/Q/S MMV5207AAB/W/Q/S MMV5207ACB/W/Q/S JMV8208AAB/W/Q/S JMV8208ACB/S

16023056

June 2004

Important Information

Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE INFORMATION IN THE

APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.

Important Notices for Consumers and Servicers

To avoid risk of serious injury or death, repairs should not be attempted by an unauthorized service personnel, dangerous conditions (such as exposure to electrical shock) may result.

Maytag will not be responsible for any injury or property damage from improper service procedures. If performing service on your own product, assume responsibility for any personal injury or property damage which may result.

To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact:

WARNING

CAUTION

Customer Service Support Center

CAIR Center

Web Site Telephone Number

WWW.AMANA.COM................................................ 1-800-843-0304

WWW.MAYTAG.COM ............................................. 1-800-688-9900

WWW.JENNAIR.COM ............................................. 1-800-536-6247

CAIR Center in Canada ........................................... 1-800-688-2002

Amana Canada Product ........................................... 1-866-587-2002

Recognize Safety Symbols, Words, and Labels

DANGER!

DANGER—Immediate hazards which WILL result in severe personal injury or death.

WARNING!

WARNING—Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION!

CAUTION—Hazards or unsafe practices which COULD result in minor personal injury or product or property

damage.

Table of Contents

Important Information .................................................... 2

Important Safety Information ......................................... 4

Microwave Leakage Testing .......................................... 5

General Information

Specifications ............................................................ 7

Placement of the Oven ............................................... 7

Location of Model Number ......................................... 7

Model Identification .................................................... 7

Service ....................................................................... 7

Parts and Accessories............................................... 7

Asure™ Extended Service Plan ................................. 7

Radio Interference ...................................................... 7

Electrical Requirements ............................................. 8

Cleaning ..................................................................... 8

Grounding Instructions ............................................... 8

Microwave Oven Description ...................................... 9

Troubleshooting Procedures

General .....................................................................10

Error Codes .............................................................. 17

Testing Procedures ................................................. 18-31

Disassembly Procedures

Grille .........................................................................32

Door Assembly ......................................................... 32

Door Disassembly .................................................... 32

Control Panel ............................................................33

P.C. Board ................................................................ 33

Control Key Panel..................................................... 35

Outer Case ............................................................... 35

Stirrer Assembly .......................................................35

Interlock Door Latch Switches ..................................36

High Voltage Capacitor ............................................. 37

Diode ........................................................................ 37

Transformer .............................................................. 37

Fuse ......................................................................... 37

Magnetron ................................................................ 38

Magnetron Fan Assembly ......................................... 38

Magnetron Thermal Fuse .......................................... 39

Humidity Sensor ....................................................... 39

Oven Thermostat ...................................................... 39

Turntable Motor .........................................................40

Vent Blower ..............................................................40

Light Socket ............................................................. 40

Appendix A

Installation Instructions ........................................... A-2

Appendix B

Use and Care information ........................................ B-2

Important Safety Information

CAUTION

Read the following information to avoid possible exposure to microwave radiation:

The basic design of the Maytag and Amana microwave oven makes it an inherently safe device to both use and service. However, there are some precautions which should be followed when servicing the microwave oven to maintain this safety. These are as follows:

1. Always operate the unit from an adequately grounded outlet. Do not operate on a two-wire extension cord.

2. Before servicing the unit (if unit is operable), perform the microwave leakage test.

3. The oven should never be operated if the door does not fit properly against the seal, the hinges or hinge bearings are damaged or broken; the choke is damaged, (pieces missing, etc.); or any other visible damage can be noted. Check the choke area to ensure that this area is clean and free of all foreign matter.

4. If the oven operates with the door open and produces microwave energy, take the following steps.

A. Tell the user not to operate the oven. B. Contact Maytag immediately.

5. Always have the oven disconnected when the outer case is removed except when making the "live" tests called for in the Service Manual. Do not reach into the equipment area while the unit is energized. Make all connections for the test and check them for tightness before plugging the cord into the outlet.

6. Always ground the capacitors on the magnetron filter box and H. V. Capacitor with an insulated-handle screwdriver before working in the high voltage area of the equipment compartment. Some types of failures will leave a charge in these capacitors and the discharge could cause a reflex action which could make you injure yourself.

7. In the area of the transformer, capacitor, diode, and magnetron there is HIGH VOLTAGE. When the unit is operating, keep this area clean and free of anything which could possibly cause an arc or ground, etc.

8. Do not for any reason defeat the interlock switches. There is no valid reason for this action at any time; nor will it be condoned by Maytag.

9. IMPORTANT: Before returning a microwave to a customer, check for proper switch interlock action. The primary and secondary switches MUST open when the door is actuated. The monitor switch MUST close at a 1/4 inch when the door is opened.

10.Before returning a microwave to a customer, verify the door spacing is reasonably uniform along the top, bottom, and sides, and that it measures 1/8 inch or less.

11. The microwave oven should never be operated with:

• Any components removed and/or bypassed.

• Any of the safety interlocks failing.

• Any of the seal surfaces failing, missing, or

damaged.

12.To ensure that the unit does not emit excessive microwave leakage and to meet the Department of Health Human Service guidelines, check the oven for microwave leakage using Narda Model 8100, 8200, Holaday HI1500, HI1501 or Simpson 380M leakage monitor as outlined in the instructions. The maximum leakage level allowed is 4mW/cm2.

13.If servicer encounters an emission reading over 4 mW/cm2 the servicer must cease repair and contact the Maytag Service Department immediately for further direction. Maytag will contact the proper Government Agency upon verification of the test results.

Microwave Leakage Testing

WARNING

Check for radiation leakage after servicing. Should the leakage be more than 4mW/cm2 inform Maytag immediately. After repairing or replacing any radiation safety device, keep a written record for future reference, as required by D.H.H.S. and HEW regulations. This requirement must be strictly observed. In addition, the leakage reading must be recorded on the service repair ticket while in the customer’s home.

Measurement With the Outer Panel Removed

Avoid contacting any high voltage components.

Whenever you replace the magnetron, measure for radiation leakage before the outer panel is installed and after all necessary components are replaced or adjusted. Special care should be taken in measuring around the magnetron.

Equipment

• Electromagnetic radiation monitor

• 600 cc glass beaker

Procedure For Measuring Radiation Leakage

Note before measuring -

• Do not exceed meter full scale deflection. Leak monitor should initially be set to the highest scale.

• To prevent false readings the test probe should be held by the grip portion of the handle only.

• The scan speed is equal to one inch per antenna revolution or one inch per second if antenna speed is unknown.

• Areas to be checked are all door seal areas and any venting parts.

• Leakage with the outer panel removed...4mW/cm2 or less.

• Leakage for fully assembled oven with door normally closed ...4mW/cm2 or less.

• Leakage for a fully assembled oven (before the latch switch (primary) is interrupted) while pulling the door ... 4mW/cm2 or less.

1 . Pour 275 ±15 cc (9 oz ±1/2 oz) of 20 ± 5°C

(68 ± 9°F) water in a beaker which is graduated to 600 cc and place the beaker in the center of oven.

2. Set the radiation monitor to 2450 MHz and use it

following the manufacturer’s recommended test procedure to assure correct results.

3. While measuring the leakage, always use the two

inch (5 cm) spacer supplied with the probe.

4. Press the start pad or turn on the timer and with the

magnetron oscillating, measure the leakage by holding the probe perpendicular to the surface being measured.

Measurement With a Fully Assembled Oven

After all components including the outer panel are fully assembled, measure for radiation leakage around the door periphery, the door viewing window, the exhaust opening, and air inlet openings.

Record Keeping and Notification After Measurement

1. After any adjustment or repair to a microwave oven, a leakage reading must be taken. Record this leakage reading on the repair ticket even if it is zero.

2. A copy of the repair ticket and the microwave leakage reading should be kept by the repair facility.

General Information

This manual provides basic instructions and suggestions for handling, installing , and servicing microwave ovens. The directions, information, and warnings in this manual are developed from experience with, and careful testing of the product. If the unit is installed according to the Installation Instructions, it will operate properly and will require minimal servicing. A unit in proper operating order ensures the consumer all the benefits provided by efficient microwave cooking.

Cooking Nomenclature

A M C 5 5 1 5 A A W

Brand

A Amana C Magic Chief G Graffer &

Sattler

H Hardwick

J Jenn-Air M Maytag N Norge U Universal Y Crosley

This manual contains information needed by authorized service technicians to install and service the microwave pertaining to this manual. There maybe, however some information which needs further explanation. Refer to individual Installation Instructions, Use and Care, Technical Sheets, or toll free technical support line to answer questions from authorized service technicians.

Color

A Almond on Almond B Black C Brushed Chrome H Traditional White L Traditional Almond P Prostyle Q Monochromatic Bisque S Stainless T Traditional Bisque W White on White F Frost White (True Color White) N Natural Bisque (True Color Bisque)

Fuel

B Butane D Dual Fuel

E/J Electric

G Gas, Natural

L Liquid Propane

M Microwave P Standing Pilot X No Fuel

W Warming Drawer

Product Type

A Accessory/Cartridge C Cooktop Updraft/Countertop D Downdraft Cooktop or Warming Drawer E Eyelevel Range G Grill L Range (20")

M Range (36")

P Drop In (24") Q Wall Oven (27") R Range, Free-Standing (30")

S Slide-In (30")

T Range Hood

V OTR

W Wall Oven

Y RV Range

Z RV Top

Listing

A UL/AGA C CSA/CGA/CUL

D Dual Listed G 220-240 V / 50-60 Hz M Military Model

P PSB Approved

(Singapore)

X Export 120 V / 60 Hz

Production Code

This identifies which version of production the unit is.

Feature Content

1000-3999 Brands 4000-6999 Maytag/Amana 7000-9999

General Information

Specifications

Refer to individual Technical Sheet for specification information.

Placement of the Oven

This microwave can be easily placed in the kitchen, family room, or anywhere else in the house. Place the oven on a flat surface such as a kitchen countertop or a specially designed microwave oven cart. Do not place oven above a gas or electric range. Free air flow around the oven is important.

Do Not Block Air Vents

All air vents must be kept clear during cooking. If air vents are covered during operation the oven may overheat. In this case, a sensitive thermal safety device automatically turns the oven off. The oven will be inoperable until the oven has cooled sufficiently.

Location of Model Number

To request service information or replacement parts, the service center will require the complete model, serial, and manufacturing number of your microwave oven. The number is located inside the oven door cavity as shown in the illustration below.

Model and Serial Number plate

Service

Keep a copy of sales receipt for future reference or in case warranty service is required. To locate an authorized servicer:

• For Amana product call 1-800-628-5782 or visit the Web Site at www.amana.com

• For Maytag/Jenn-Air product call 1-800-462-9824 or visit the Web Sites at www.maytag.com or www.jennair.com

• For product in Canada call 1-866-587-2002 or visit the Web Sites at www.amana.com, www.maytag.com or www.jennair.com

Warranty service must be performed by an authorized servicer. We also recommend contacting an authorized servicer, if service is required after warranty expires.

Parts and Accessories

Purchase replacement parts and accessories over the phone. To order accessories for your product call:

• For Amana product call 1-877-232-6771 or visit the Web Site at www.amana.com

• For Maytag/Jenn-Air product call 1-800-462-9824 or visit the Web Sites at www.maytag.com or www.jennair.com

• For product in Canada call 1-866-587-2002 or visit the Web Sites at www.amana.com, www.maytag.com or www.jennair.com

Extended Service Plan

We offer long-term service protection for this new oven.

• Asure™ Extended Service Plan is specially designed to supplement Amana’s strong warranty. This plan covers parts, labor, and travel charges. Call 1-866-232-6244 for information.

Model Identification

Complete enclosed registration card and promptly return. If registration card is missing:

• For Amana product call 1-800-843-0304 or visit the Web Site at www.amana.com

• For Maytag product call 1-800-688-9900 or visit the Web Site at www.maytag.com

• For Jenn-Air product call 1-800-536-6247 or visit the Web Site at www.jennair.com

• For product in Canada call 1-866-587-2002 or visit the Web Sites at www.amana.com, www.maytag.com or www.jennair.com

When contacting provide product information located on rating plate. Record the following: Model Number: ___________________ Manufacturing Number: ___________________ Serial or S/N Number: ___________________ Date of purchase: ___________________ Dealer’s name and address: ___________________

• Dependability Plus™ Extended Service Plan is specially designed to supplement Maytag’s and JennAir’s strong warranty. This plan covers parts, labor, and travel charges. Call 1-800-925-2020 for information.

Radio Interference

1. Microwave oven operation may interfere with the radio

or TV reception.

2. When there is interference, it may be reduced or

eliminated by taking the following measures:

• Clean the door and the seal surface of the oven.

• Reorient the receiving antenna of the radio or TV.

• Relocate the microwave oven in relation to the radio or TV.

• Move the microwave away from the receiver.

• Plug the microwave into a different outlet so that the microwave and receiver are on different branch circuits.

3. 120 VAC, 60 Hz household outlet. Be sure the circuit is at least 15 or 20 A and the microwave oven is the only appliance on the circuit. It is not designed for 50 Hz or any circuit other than a 120 VAC, 60 Hz circuit.

• Electrical Rating of the Oven: 120 VAC, 60 Hz.

General Information

Electrical Requirements

The oven is designed to operate on a Standard 120 VAC, 60 HZ household outlet.

Cleaning

Before cleaning the oven, unplug the power supply cord. If impossible, open the oven door to prevent an accidental oven start.

Inside of the Oven

Use a damp cloth to wipe out crumbs and spillovers. It is important to keep the area between door and cavity front clean to assure a tight seal. Remove greasy spatters with a sudsy cloth, then rinse and dry. Do not use harsh detergent or abrasive cleaners.

Glass Tray

The glass tray can be washed by hand or in the dishwasher.

Control Panel

Wipe with a damp cloth followed immediately by a dry cloth. The Child Lock feature is also useful when cleaning the control panel. Child Lock prevents accidental programming when wiping the control panel (if so equipped).

Door

If steam accumulates inside or around the outside of the oven door, wipe the panel with a soft cloth. This may occur when the microwave oven is operated under high humidity conditions and in no way indicates a malfunction of the unit.

Outside Oven Surface

Clean with damp cloth. To prevent damage to the operating parts inside the oven, the water should not be allowed to seep into the ventilation openings. After cleaning the oven, be sure that the rotating ring and the glass tray are in the right position. Press the STOP/ CLEAR pad twice to reset any accidental key setting.

Grounding Instructions

This appliance must be grounded. If an electrical short circuit occurs, grounding reduces the risk of electric shock by providing an escape wire for the electric current. The cord for this appliance has a grounding wire with a grounding plug. Put the plug into an outlet that is properly installed and grounded.

WARNING

To avoid risk of electric shock, personal injury or death, use grounding plug properly.

Ask a qualified electrician if you do not understand the grounding instructions or if you wonder whether the appliance is properly grounded. Keep the electrical power cord dry and do not pinch or crush it in any way.

Properly Polarized and

Grounded Outlet

Three-Pronged (Grounding) Plug

For a permanently connected appliance: This appliance must be connected to a grounded, metallic, permanent wiring system, or an equipment grounding conductor should be run with the circuit conductors and connected to the equipment grounding terminal or lead on the appliance.

General Information

Microwave Oven Description

Troubleshooting Procedures

To avoid risk of electrical shock, personal injury, or death, disconnect power to oven before servicing, unless testing requires it.

• Verify proper grounding before checking for trouble.

• Be careful of the high voltage circuit.

• Discharge the high voltage capacitor.

• When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire from these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.

WARNING

CAUTION

• Do not touch any part of the circuit on the printed circuit board, since static electric discharge may damage the

control panel. Always touch yourself to ground while working on this panel to discharge any static charge built up in your body.

"PLEASE TOUCH TIME OF DAY"

does not appear in

the display,

when unit is plugged in.

1. Check power supply.

2. Check fuse.

3. Check oven thermostat.

Measure voltage

between pin 1

and pin 3 of

CN1 connector

Is 120 volts

indicated?

Replace

circuit board.

Unit operates.

Troubleshooting Procedures

Is continuity

indicated when

key pad is

pressed?

Replace

control

key pad.

Unit operates.

Measure resistance

of control key

panel after removing

ribbon connector.

Reconnect

ribbon connector

for proper

connection.

Key pad matrix is located in “Testin

Procedures” located on

Pages 22 thru 31.

Does ribbon

connector have

proper

connection?

Replace

circuit board.

Check Touch Keypad

Adjust or

replace door

sensing

switch.

Measure resistance of

CN2 between pin 1 and

pin 3 with door closed.

Reconnect

ribbon connector

for proper

connection.

Does ribbon

connector have

proper

connection?

Replace

circuit board.

Unit operates.

Troubleshooting Procedures

Check Air Vents

Unit operates normal,

but little or no heating

is produced with an

oven load.

Does fan motor

operate when

START is pressed?

Place a jumper

wire across

thermostat.

Check if fan motor

operates when

START is pressed.

Replace high

voltage

capacitor.

Does capacitor have

correct resistance?

See Testing

Procedures.

Replace

magnetron.

Measure

resistance

of fan motor.

Is resistance

present?

Replace

thermostat.

Unit operates.

Replace

circuit board.

Replace

fan motor.

Troubleshooting Procedures

Check Primary/Secondary Interlock Switches and Thermostat

Unit does not heat even

if display counts down

when START pad is

pressed for high power.

Replace

circuit board.

Unit operates.

Check the

contacts of relays 8, 10, 11. See Testing Procedures.

Reconnect ribbon

connector for

proper

connection.

Does ribbon

connector have

proper

connection?

Replace

circuit board.

Unit does not heat even

if display counts down

when START pad is

pressed for high power.

Does transformer

have the correct

resistance?

Replace high voltage transformer.

Unit operates.

Measure resistance of

high voltage transformer.

See Testing

Procedures.

Measure resistance of high voltage capacitor.

See Testing

Procedures.

Replace high voltage transformer.

Replace

high

voltage

diode.

Replace

magnetron.

Does capacitor

have correct

resistance?

resistance of high

voltage diode.

Does diode

have correct

resistance?

Measure

See Testing

Procedures.

Troubleshooting Procedures

Check Power Supply and Fuse

Ventilation fan does

not operate when

FAN HIGH/LOW pad

is pressed.

Does magnetron

thermal fuse and

oven thermostat have

the correct

resistance?

Unit operates.

Measure resistance

of magnetron thermal fuse and oven thermostat.

Ver ify proper

connection of

ribbon

connector.

Reconnect ribbon

connector for

proper connection.

Replace

ventilation

fan.

Does ribbon

connector have

proper

connection?

Replace

circuit board.

No buzzer sound when

pressing control pad between stages or at

the end of cooking.

Verify normal

operation of

circuit board.

Replace

circuit board.

Unit operates.

Troubleshooting Procedures

Relay (Models UMV1152B**, MMV1153A**, AMV1162A**)

Vent fan motor and oven lamp turn on without touching

the START key when the door is closed.

GOOD

Remove the mate connector of I/O CON from the circuit board. Does the unit still operate?

Replace

circuit board

YES

Defective

RELAY1, 4

Replace

circuit board

Relay (Model AMV5164A**)

Vent fan motor and oven lamp turn on without touchin

the START key when the door is closed.

GOOD

Remove the mate connector of I/O CON from the circuit board. Does the unit still operate?

Replace the circuit board

YES

Defective RELAY1, 12

YES

Replace

circuit board

Vent fan motor and oven lamp turn on when the door

is closed and the START key is touched.

YES

GOOD

Measure the voltage at pin NO. 25, 26 of U01 or 6 of U02 Voltage reading: 0 Vdc?

Replace circuit board

YES

Defective

RELAY1, 4 or poor

connection of

RELAY1, 4

Replace

circuit board or

correct the

connection.

Vent fan motor and oven lamp turn on when the door

is closed and the START key is touched.

YES

GOOD

Measure the voltage at pin NO. 47, 50 of U01 or 48, 49, 51 of U01 Voltage reading: 0 Vdc?

Replace the circuit board

YES

Defective

RELAY1, 12 or poor

connection of

RELAY1, 12

Replace

circuit board or

correct the

connection.

Troubleshooting Procedures

Relay (Models AMV4204A**, MMV4205A**, MMV5165A**, AMV5206A**, MMV5207A**, JMV8208A**)

FAN motor turns on without touching Enter/Start key

when the door is closed.

GOOD

FAN motor turns on when the door is closed and

Remove the male connector of I/O CON from the circuit board. Does the unit still operate?

Replace the circuit board

Enter/Start key is touched.

YES

Defective

Wire Assembly

Replace

Wire Assembly

Oven lamp turns on without touchin

when the door is closed.

GOOD

Oven lamp turns on when the door is closed and

Remove the male connector of I/O CON from the circuit board. Does the unit still operate?

Replace the circuit board

Enter/Start key is touched.

Enter/Start key

YES

Defective

Wire Assembly

Replace

Wire Assembly

YES

GOOD

YES

Measure the voltage at pin number 1 and 4 of CN1 Voltage reading:120 V AC?

Replace the circuit board

Defective FAN motor

Replace

FAN motor

YES

GOOD

YES

Measure the volta 1,4 of CN1 Voltage reading:120 V AC?

Replace the circuit board

e at pin NO.

YES

Defective Oven lamp

Replace

Oven lamp

Troubleshooting Procedures

Oven Error Code Display

Touchpad Display Error Mode

F1 F2 F3 F4 F5

Checkout Procedure: Fuse

PROBLEM CAUSE

Fuse blows immediately after door is closed. Fuse blows immediately after door is opened. Fuse blows when door is closed and START key is touched.

NOTES: Replace blown fuse with 20 Amp fuse. If the fuse is blown due to an improper switch operation, replace all interlock switches, PCB Ass’y and the

fuse simultaneously, and ensure they are connected properly.

Check for microwave energy leakage after replacing interlock and monitor switches.

Thermistor Open Thermistor Short Before Cooking Thermistor Short After Cooking Sensor Open Damper Switch Sensing Error

Improper operation of the primary interlock and secondary interlock switches and/or interlock monitor switch.

Malfunction of high voltage transformer; high voltage capacitor including diode, magnetron, blower motor or circuit board.

Latch Board

Primary Interlock Switch

Monitor Interlock Swit ch

Secondary Interlock Switc h

Models AMV4204A**, M 5

MV A**, AMV A**, MV520 A**

M 5165 5206 M 7 , JMV8208A**

MV420 A**,

Latch Board

Secondar y Interlock Switch

Monitor Interlock Switch

Primary Interlock Switch

Models MV **,

U 1152B MMV1153A**,

5AMV1162A**, AMV 164A**

Checkout Procedure: Circuit Board

PROBLEM CAUSE

The START function fails to operate, but the high voltage systems, interlock/monitor switches and door sensing/relays all test good. Proper temperature is not obtained. Buzzer does not sound or sounds continuously. Some segments of 1 or more digits display on the touch panel, or display when they should not.

NOTE: Check for microwave energy leakage after replacing Printed Circuit Board Assembly.

Defective Control Printed Circuit Board Assembly

Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge the high voltage capacitor before servicing, unless testing requires power.

Illustration Component Test Procedure Results

Discharge Capacitor

Disconnect connector and measure continuity with meter on R x 1 scale:

Secondary ....................................

Filament........................................

Primary.........................................

(Measure at room temperature, or 70° F/ 22°C) Measure continuity with meter on “High”

scale: Primary winding to ground ............

Filament winding to ground...........

Discharge Capacitor Disconnect connector and measure continuity with meter on R x 1 scale:

Secondary ....................................

Filament........................................

Primary (High & Low)....................

(Measure at room temperature, or 70° F/ 22°C) Measure continuity with meter on “High”

scale: Primary winding to ground ............

Filament winding to ground...........

Remove wires from magnetron and connect ohmmeter to terminals. Also check between each terminal and ground.

Discharge Capacitor Remove wires from capacitor terminals and connect ohmmeter, set on highest resistance scale to terminals.

Also check between each terminal and capacitor case.

Remove diode lead from capacitor and connect ohmmeter.

Reverse leads for second test. Disconnect the leads. Place water in the oven and select power levels 1 through

10. Check continuity between the terminals of the relays.

Approximately 65-120 Ω Less than 1 Ω Less than 1 Ω

Infinite Ω Infinite Ω

Approximately 50-120 Ω Less than 1 Ω Less than 1 Ω

Infinite Ω Infinite Ω

Between Terminals: Less than 1 Ω Each terminal to ground: Infinite

resistance. Note: This test is not conclusive. If oven does not heat and all other components test good replace the magnetron and retest.

Between Terminals: Meter should momentarily indicate several ohms, then return to infinity. If no deflection occurs, or if continuous deflection occurs, replace capacitor. Terminal to Case: Infinite resistance

Infinite resistance should be measured in one direction and continuity in the opposite direction. NOTE: Ohmmeter must contain a battery of 6 volts minimum.

Power Level

1 4 sec 18 sec 2 6 sec 16 sec 3 8 sec 14 sec 4 10 sec 12 sec 5 12 sec 10 sec 6 14 sec 8 sec 7 16 sec 6 sec 8 18 sec 4 sec 9 20 sec 2 sec

10 22 sec 0 sec

Cycle On

(Continuity)

Cycle Off

(Open)

UMV1152B**,

MMV1153A**,

AMV1162A**,

AMV5164A**

AMV4204A**, MMV4205A**, MMV5165A**,

AMV5206A**, MMV5207A**,

JMV8208A**

All Models

UMV1152B**,

MMV1153A**,

AMV1162A**

High voltage transformer

120 V

Primary

0 V

High voltage transformer

120 V

Primary

0 V

Magnetron Discharge Capacitor

High Voltage Capacitor

High Voltage Diode Discharge Capacitor

Secondary

Filament

Secondary

Filament

Relay 2

18 16023056 Rev. 0

+ 39 hidden pages

Maytag AMV1162AAB, MMV1153AAB, AMV5164AAB, AMV5164ACB, MMV5165AABMMV5165AA Service

Specifications and Main Features

Frequently Asked Questions

User Manual