Whirlpool 1997 "E service manual Control Circuit Board Check List, Voltage circuits

Page 63

Cooking Products Service Manual

Original March, 1997

4322167

© 1997 Whirlpool Corporation

Page 3-23

 

 

COMPONENT

TEST PROCEDURE

 

RESULT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

Relay 2 (RY2)

Set the ohmmeter to the R x 1

 

 

∞ 0

 

 

∞ 0

 

 

 

 

 

 

 

 

 

 

 

Level

 

 

 

 

 

 

 

 

scale, and check for continuity

 

 

 

 

 

 

 

 

WARNING: When you apply

 

 

 

CLOSED

 

OPEN

 

between the two relay terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

power to the unit, be careful

 

1

 

4 Seconds

18 Seconds

 

pins. Use the following steps.

 

 

 

not to touch any of the high

 

 

 

 

 

 

 

 

 

1.Remove the wire connectors

 

 

 

 

 

 

 

 

 

voltage circuits.

 

2

 

6 Seconds

16 Seconds

 

 

from the relay terminals.

 

 

 

 

 

 

 

 

 

 

2.Use a pair of alligator clips,

 

3

 

8 Seconds

14 Seconds

 

 

and clip the ohmmeter leads

 

 

 

 

 

 

 

 

 

 

to the two terminals of the re-

 

4

 

10 Seconds

12 Seconds

 

 

lay. Make sure that you do not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

allow the clips to short to any-

 

5

 

12 Seconds

10 Seconds

 

 

thing.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.Plug the microwave oven into

 

 

 

 

 

 

 

 

 

 

 

6

 

14 Seconds

 

8 Seconds

 

 

an AC receptical.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.Set the power level, as shown

 

 

 

 

 

 

 

 

 

 

 

7

 

16 Seconds

 

6 Seconds

 

 

in the chart in the right col-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

umn, and check the relay op-

 

 

 

 

 

 

 

 

 

 

8

 

18 Seconds

 

4Seconds

 

 

eration for the ten power lev-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

els. NOTE: During the operat-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ing time set for each level, the

 

9

 

20 Seconds

 

2Seconds

 

 

relay will close (short) for the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

time specified in the chart, and

 

10

 

22 Seconds

 

0Seconds

 

 

then open for another speci-

 

 

 

 

 

 

 

 

 

 

fied amount of time. When the

 

 

 

 

 

 

 

 

 

 

open time elapses, the cycle

 

 

 

 

 

 

 

 

 

 

begins again until the cooking

 

 

 

 

 

 

 

 

 

 

time elapses and the oven

 

 

 

 

 

 

 

 

 

 

turns off.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL CIRCUIT BOARD CHECK LIST

The following problems indicate a defective control circuit board:

1.The START function fails to operate, but the high voltage systems, the interlock switches, the door sensing, and the relay checks are good.

2.The oven operates okay with a replace- ment relay installed.

3.Proper temperature measurements can- not be obtained.

4.The buzzer does not sound, or continues to sound.

5.Some segments of one or more digits do not light up, or they continue to light up, or segments light when they should not.

6.Wrong figures appear on the display.

7.The digits on the display flicker.

8.Some of the indicators do not light.

9.The clock does not keep the proper time.

3-23

Page 62 Page 64
Image 63
Page 62 Page 64
Contents OVER-THE-RANGE Microwave Oven Hood Combination MH7130XE MH7135XE MH9115XE Table of Contents Primary, Monitor, & Secondary Switch Checkout Procedure Electrical Shock Hazard Important Safety InformationPage Vii Leakage Test EquipmentTest Theory of Operation PK/WBL Component Sections Component AccessRemoving the Microwave Oven & Cabinet GeneralRemoving The Cabinet Removing the Oven Door Protection Control SystemRemoving the Oven Door Components Removing the Control Panel Removing the Line Fuse REMOVING/ADJUSTING the Interlock Switches Removing a SwitchMaking Adjustments Inset ALL Other SwitchesControl Panel Opening Removing the Base Thermal FuseRemoving the Magnetron Thermal Fuse Remove Five AIR Duct Screws Unplug Power Cord & FAN MotorRemoving the Convection Thermistor Remove Five Removing the Cavity Thermal Fuse Removing the Oven Light Socket Operating Control SystemControl Board Removing the FAN Motor Removing the Power Cord Removing the Blower Motor Capacitor Removing the Convection Heating Element Viewed from Under TOP Plate Removing the GAS Sensor Removing the Stirrer Motor Removing the Turntable Motor Removing the Cooktop Light Sockets High Voltage Components Accessing the ComponentsRemoving the Magnetron Removing the High Voltage Rectifier High Voltage Capacitor Removing the High Voltage Transformer Page Important Safety Instructions Component Description & TestingPage Original March 4322167 Possible Customer Complaint Thermal FusesBlower Motor Capacitor GAS Sensor Convection Thermistor Viewed from Under TOP Plate Convection Heating ElementMotors Touch Panel Continuity Test Programming ChecksProblem Possible Cause Test Procedure Or Correction ChartsProblem Possible Cause Test Procedure Or Correction Problem Possible Cause Test Procedure Or Correction Checking the Microwave Power Output Checking for Microwave Energy Leakage Making the Measurements Measuring The Oven With The Cabinet InstalledOriginal March 4322167 Test Charts Component TestingTerminal-To-Terminal Contacts Component Test Procedure Result Keyboard Matrix Voltage circuits Control Circuit Board Check ListDoor Closed PRIMARY, MONITOR, & Secondary Switch Checkout ProcedureContinuity Test Chart Door OpenTech Tips Wiring DiagramsModel MH9115XE Blower Motor is on LOW Strip CircuitsUnit is Plugged in Clock is Working Door is Open Oven Light is onCooktop Lights are on High or LOW Blower Motor is on HighConvection Cooking is on Microwave Cooking is onSpecifications MH7130XEQ MH7130XEZ MH7135XEB Specification ChartsTemperature Sensor Probe Whirlpool Corporation MH7130XEQ MH7130XEZ MH7135XEB Beverage Frozen Entree MH7135XEQ MH9115XEB MH9115XEQ 120 Vertical CFM Hi/Low MH7135XEQ MH9115XEB MH9115XEQ Product Identification Model & Serial Number ExplanationLength of Warranty Whirlpool Will PAY for Will not PAY for Whirlpool Microwave Hood Warranty

1997 "E specifications

The Whirlpool 1997 "E" is a notable refrigerator model that reflects the company's commitment to innovation and consumer convenience during the late 1990s. This model encapsulated both style and functionality, aiming to meet the evolving needs of households.

One of the standout features of the Whirlpool 1997 "E" is its Energy Saver technology. As energy efficiency became a paramount concern for consumers, this refrigerator was designed to minimize electricity consumption while maintaining optimal cooling performance. The appliance featured enhanced insulation and a high-efficiency compressor, allowing it to use less energy than many of its predecessors.

The design of the Whirlpool 1997 "E" was another highlight. It featured a sleek and modern aesthetic, available in several finishes including classic white, elegant black, and stainless steel. The exterior was complemented by smooth curves and a user-friendly interface, offering an appealing look that fit seamlessly into various kitchen decors.

Inside, the refrigerator came equipped with adjustable shelving and a spacious interior layout, allowing users to customize storage according to their needs. The easy-to-clean surfaces and removable shelves made maintenance simple, further enhancing the user experience. The model also included dedicated compartments for fruits and vegetables, with humidity controls to prolong freshness.

Another key technological advancement in the Whirlpool 1997 "E" was its advanced cooling system. Featuring MultiFlow technology, this model ensured a consistent temperature throughout the refrigerator and freezer compartments. This technology worked by circulating cold air across different shelves, minimizing temperature fluctuations that could affect food preservation.

The refrigerator also boasted features like a water filtration system, which improved the taste and quality of water dispensed through its integrated dispenser, providing convenience for families on the go.

Overall, the Whirlpool 1997 "E" set a benchmark for kitchen appliances in its era, combining energy efficiency, user-friendly design, and innovative technology. This model showcased Whirlpool's dedication to providing practical solutions that catered to the needs of contemporary households, making it a popular choice for many consumers. Its legacy continues to influence refrigerator designs in the years that followed, marking it as a significant player in the realm of home appliances.
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