GE Advantium PSA2200R, Advantium PSA2201R, Advantium ZSA2201R Technical Service Manual

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Page 1

GE Appliances

Technical Service Guide

SEPTEMBER 2010

Advantium 240 V (ATC)

PSA2200R PSA2201R ZSA2201R

31-9201

Proﬁle

START

BACK

PAUSE

CLEAR

HELP

OFF

CONTROL LOCK HOLD 3 SECS

CONV

MICRO

SPEED

BAKE

WAVE

COOK

MICRO

COOKING

SETTINGS

OPTIONS

30 SECS

SURFACE

TIMER

ENT

LIGHT

ON/OFF

PRESS TO TURN

TIMER OFF

GE Appliances General Electric Company Louisville, Kentucky 40225

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IMPORTANT SAFETY NOTICE

The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major ap pli ance may result in personal injury and property damage. The man u fac tur er or seller cannot be responsible for the in ter pre ta tion of this in for ma tion, nor can it assume any liability in connection with its use.

WARNING

To avoid personal injury, disconnect power before servicing this prod uct. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.

RECONNECT ALL GROUNDING DEVICES

If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.

GE Appliances

Technical Service Guide

(Continued next page)

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PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY.

A. DO NOT OPERATE OR ALLOW THE OVEN TO BE OPERATED WITH THE

DOOR OPEN.

B. IF THE OVEN OPERATES WITH THE DOOR OPEN, INSTRUCT THE USER

NOT TO OPERATE THE OVEN AND CONTACT THE MANUFACTURER IMMEDIATELY.

C. MAKE THE FOLLOWING SAFETY CHECKS ON ALL OVENS TO BE

SERVICED BEFORE ACTIVATING THE MAGNETRON OR OTHER MICROWAVE SOURCE, AND MAKE REPAIRS AS NECESSARY:

1. INTERLOCK OPERATION.

2. PROPER DOOR CLOSING.

3. SEAL AND SEALING SURFACES (ARCING, WEAR AND OTHER DAMAGE).

4. DAMAGE TO OR LOOSENING OF HINGES AND LATCHES.

5. EVIDENCE OF DROPPING OR ABUSE.

D. BEFORE TURNING ON MICROWAVE POWER FOR ANY TEST OR

INSPECTION WITHIN THE MICROWAVE GENERATING COMPARTMENTS, CHECK THE MAGNETRON, WAVE GUIDE OR TRANSMISSION LINE AND CAVITY FOR PROPER ALIGNMENT, INTEGRITY AND CONNECTIONS.

E. ANY DEFECTIVE OR MISADJUSTED COMPONENTS IN THE INTERLOCK

MONITOR, DOOR SEAL AND MICROWAVE GENERATION AND TRANSMISSION SYSTEMS SHALL BE REPAIRED, REPLACED OR ADJUSTED BY PROCEDURE DESCRIBED IN THIS MANUAL BEFORE THE OVEN IS RELEASED TO THE OWNER.

F. A MICROWAVE LEAKAGE CHECK TO VERIFY COMPLIANCE WITH THE

FEDERAL PERFORMANCE STANDARD SHOULD BE PERFORMED ON EACH OVEN PRIOR TO RELEASE TO THE OWNER.

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Table of Contents

Air Tunnel Cover ................................................................................................................................................................26

Air Tunnel Inlet ...................................................................................................................................................................25

Air Tunnel Outlet ...............................................................................................................................................................26

Bottom Cover ......................................................................................................................................................................24

Bottom TCO (Thermal Cut Out) ...................................................................................................................................37

Buzzer .....................................................................................................................................................................................29

Capacitor and Diode .......................................................................................................................................................62

Component Access Chart ............................................................................................................................................ 20

Component Locator Views ........................................................................................................................................... 17

• Front View .....................................................................................................................................................................17

• Right Side View ...........................................................................................................................................................17

• Top View .........................................................................................................................................................................18

• Bottom View .................................................................................................................................................................18

Components ........................................................................................................................................................................20

Control Boards and Panel Connections .................................................................................................................19

Control Features ................................................................................................................................................................14

Control Panel Assembly .................................................................................................................................................22

Convection PL Chart ........................................................................................................................................................ 65

Convection Fan Motor ....................................................................................................................................................46

Convection Heater ...........................................................................................................................................................46

Convection Heater Assembly......................................................................................................................................47

Convection Heater TCO (Thermal Cut Out) ............................................................................................................ 36

Cooktop Lamp .................................................................................................................................................................... 50

Cooldown Chart .................................................................................................................................................................66

Damper Assembly ............................................................................................................................................................ 40

Damper Motor .................................................................................................................................................................... 40

Damper Switch ..................................................................................................................................................................39

Demo Mode .........................................................................................................................................................................15

Diagnostics and Service Information ......................................................................................................................68

Door Assembly ...................................................................................................................................................................23

Door Sensing Switch .......................................................................................................................................................39

Door Switch Removal ......................................................................................................................................................39

Glass Touch Assembly....................................................................................................................................................32

Grill ..........................................................................................................................................................................................21

High Voltage Transformer ............................................................................................................................................60

Hood TCO (Thermal Cut out) ........................................................................................................................................38

Humidity Sensor ................................................................................................................................................................41

Installation ...........................................................................................................................................................................16

Introduction ......................................................................................................................................................................... 7

Load Algorithm Chart .....................................................................................................................................................64

Lower Cooling Motor .....................................................................................................................................................54

Lower Heater (Ceramic) .................................................................................................................................................45

Magnetron............................................................................................................................................................................61

Magnetron Fan Assembly .............................................................................................................................................56

Magnetron Fan Motor .....................................................................................................................................................55

Magnetron TCO (Thermal Cut Out) ............................................................................................................................37

Microwave Leak Test .......................................................................................................................................................68

Monitor Switch ...................................................................................................................................................................38

(Continued next page)

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Noise Filter (1) .....................................................................................................................................................................35

Noise Filter (2) .....................................................................................................................................................................35

Nomenclature .................................................................................................................................................................... 6

Operating Charts ..............................................................................................................................................................64

Operating Modes .............................................................................................................................................................. 8

• Speedcook .................................................................................................................................................................... 8

• Microwave ..................................................................................................................................................................... 9

• Convection .................................................................................................................................................................... 10

• Broil ..................................................................................................................................................................................11

• Toast ................................................................................................................................................................................12

• Warm ...............................................................................................................................................................................12

• Proof .................................................................................................................................................................................13

• Idle ....................................................................................................................................................................................13

Outer Cover .........................................................................................................................................................................21

Oven Lamp (Cavity) ..........................................................................................................................................................49

Oven Lamp (Cavity) Assembly ....................................................................................................................................50

Oven Removal ....................................................................................................................................................................21

Oven TCO (Thermal Cut Out) ........................................................................................................................................ 36

PL (Power Level) Chart ....................................................................................................................................................65

Power Supply Board ........................................................................................................................................................27

Primary Interlock Switch ...............................................................................................................................................38

Relay Board ......................................................................................................................................................................... 28

Schematic.............................................................................................................................................................................72

Schematics and Wiring Diagrams ............................................................................................................................72

Selector Board .................................................................................................................................................................... 33

Sensor and Keypanel Failure Detection .................................................................................................................68

Service Test Mode ............................................................................................................................................................. 69

Smart Board ........................................................................................................................................................................30

Standard Test Load .......................................................................................................................................................... 68

Stirrer Assembly ................................................................................................................................................................58

Stirrer Motor ........................................................................................................................................................................57

Thermal Compensation .................................................................................................................................................67

Thermistor ............................................................................................................................................................................42

Troubleshooting (Dead Unit) ........................................................................................................................................ 70

Turntable Motor .................................................................................................................................................................59

Upper Cooling Motor ..................................................................................................................................................... 53

Upper Heater Assembly ................................................................................................................................................44

Upper Heater Halogen 1 and 2 .................................................................................................................................. 43

Upper Heater Interlock Switch ...................................................................................................................................38

Upper Heater TCO's (Thermal Cut Outs) ................................................................................................................. 36

Ventilation Motor...............................................................................................................................................................51

Ventilation Motor Capacitor ......................................................................................................................................... 52

VFD Board (Vacuum Florescent Display) .............................................................................................................. 34

Voltage Compensation ...................................................................................................................................................67

Warranty .............................................................................................................................................................................. 74

Wiring Diagram .................................................................................................................................................................73

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Model Number

Brand

P = GE Pro l e Z = Monogram

GE Speedcook Technology

Conﬁ guration

A = Above the cooktop

Nomenclature

P S A 2 2 0 0 R W W

Product Color

BB = Black SS = Stainless Steel WW = White

Model Year Designator

Feature Pack

Designates Features - the higher the number, the more features.

Nomenclature

The nomenclature plate is lo cat ed on the inside door frame.

The mini-manual is located behind the control panel on the of the oven.

right side

Serial Number

The  rst two characters of the serial number identify the month and year of manufacture. Example: ST123456S = September, 2010

S - SEP 2010 - T T - OCT 2009 - S V - NOV 2008 - R Z - DEC 2007 - M A - JAN 2006 - L D - FEB 2005 - H F - MAR 2004 - G G - APR 2003 - F H - MAY 2002 - D L - JUN 2001 - A M - JUL 2000 - Z R - AUG 1999 - V

The letter des ig nat ing the year re peats every 12 years.

Example:

T - 2010 T - 1998 T - 1986

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Introduction

The Advantium ATC is an "Above The Cooktop" oven that has the functionality of a microwave, convection, and speedcook oven. Five heat sources are available for cooking. Two 1200-watt halogen lights are located at the top of the unit. A convection system, located behind the right-side of the oven cavity, provides a 1550-watt heat source and fan to circulate cavity air. A 500-watt ceramic heater provides additional heat from the bottom of the oven. The Advantium can also be used as a 950-watt microwave oven.

The oven operates in one of eight modes:

• Idle - No cycles have been selected, unit is plugged in and idle.

• Speedcook - Used for faster cooking, all heat sources including microwave energy are used.

• Microwave - Functions as a standard microwave, cooks with microwave energy only.

• Convection - Uses only the convection element and air is circulated throughout the cavity.

• Broil - Uses all heat sources except microwave energy

• Toast - Operates similar to Broil.

• Warm - Used to keep items warm after they have been cooked.

• Proof - Provides correct temperature for proo ng dough.

See the information pertaining to how the loads cycle during each mode.

Cooking modes are started by pressing a key on the key panel. When a selection has been made, a menu appears on the display. The selector knob is then used to navigate. Rotating the knob allows scrolling menu items and highlights each item. When the knob is pressed in, the highlighted item is selected. Press the start key and the cycle starts.

When the cycle starts, the Smart Board sends 5 VDC to the appropriate relays on the Relay Board. The relay then switches neutral to the load. Loads are operated according software algorithms (See contained in the Smart Board.

To troubleshoot the oven:

1 Determine in which mode of operation the failure is occurring.

2. Look at the

3. Determine which part is not functioning correctly.

4. Look up failing part in the table of contents.

5. Go to the appropriate page and  nd the troubleshooting section for that part .

6. Follow troubleshooting instructions.

Operating Modes section for Information pertaining to starting a cycle. See Load Algorithms for

Load Algorithms.)

Load Algorithm Chart to determine what normal operation is.

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Operating Modes

Speedcook

See Load Algorithm Chart for load operation in Speedcook.

To use the SPEEDCOOK feature:

1. Press the SPEEDCOOK pad.

2. Turn the selector dial to select the type of food category you want, then press the dial to enter.

3. Turn the selector dial to select the speci c food (menu selection), then press the dial to enter.

4. Turn the selector dial to select amount, size and/or doneness (if required, the oven will prompt you), then press the dial after each selection.

5. Once the display shows: EDIT, SAVE or START press the START/PAUSE pad or the selector dial to start cooking. (EDIT allows you to change the settings.)

If you want to cook a food item that is not among the pre-set selections, use My Recipe to custom speedcook:

1. Press the SPEEDCOOK pad and select My Recipe, then press the dial to enter. Select New Recipe. If no entries are made within 15 seconds, the display will revert back to the time of day.

2. Turn the selector dial to select the cooking time, then press the dial to enter. The display will prompt you to select the power level(s).

3. Turn the dial to select the upper power level. Turn the dial clockwise to increase or counterclockwise to decrease the upper power level, then press the dial to enter.

4. Turn the dial to select the lower power level, then press the dial to enter.

5. Turn the dial to select the microwave power level, then press the dial to enter.

6. Turn the dial to select the convection power level, then press the dial to enter.

7. Press the START/PAUSE pad or press the selector dial to start cooking.

Speedcook Tips:

• When speedcooking pre-set menu foods, you may see Optimizing time in the display several seconds after you press START/PAUSE. The oven automatically senses the electrical voltage level in your home and adjusts the cooking time up or down for proper cooking.

• The wire oven rack should not be used for speedcook or microwave cooking to prevent arcing.

• The oven and door will get very hot when speedcooking.

• Do not use coverings, containers, or cooking/roasting bags made of foil, plastic, wax, or paper when speedcooking.

• Use of the clear glass tray when speedcooking will result in inferior cooking performance and possible cracking of the glass tray.

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Microwave

Microwave cooking options include cooking by time, cooking by food, and defrosting.

See Load Algorithm Chart for load operation in Microwave.

To cook by time:

1. Press the MICROWAVE pad.

2. Turn the dial to select Cook by Time, then press the dial to enter.

3. Turn the dial to set the cook time, then press the dial to enter.

4. Turn the dial to set the power level, then press the dial to enter.

5. Press the dial or the START/ PAUSE pad to start cooking.

To cook by time 1 & 2:

1. Press the MICROWAVE pad.

2. Turn the dial to select Cook, then press the dial to enter.

3. Turn the dial to select Cook by Time 1 & 2, then press the dial to enter.

4. Turn the dial to set the  rst time, then press the dial to enter. Repeat for the  rst power level, the second time, and the second power level.

5. Press the dial or the START/PAUSE pad to start cooking.

To cook by Micro 30 Secs:

Press MICRO 30 SECS repeatedly for 30 second increments of microwave cooking time. Oven starts immediately. The power level is automatically set at high, but you can change it for more  exibility. See Microwave power levels section in the Owner's Manual for instructions.

To defrost by time:

1. Press the MICROWAVE pad.

2. Turn the selector dial to Defrost, then press the dial to enter.

3. Turn the dial to By time, then press the dial to enter.

4. Turn the dial to select the time you want, then press the dial to enter.

5. Press the dial or START/PAUSE pad to start defrosting.

6. Turn the food over when the oven signals Turn food over.

Power level is automatically set at 3, but can be changed. To change the power levels, see Microwave power levels section in the Owner's Manual for instructions.

You can defrost small items quickly by raising the power level after entering the time. Power level 7 cuts the total defrosting time in about half; power level 10 cuts the total time to about 1/3. When defrosting at high power levels, food will need more frequent attention than usual and may have some cooking.

(Continued Next Page)

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To defrost by food type:

1. Remove meat from the package and place it on a microwave-safe dish. Bread should be left in the package with any metal twist-ties removed.

2. Press the MICROWAVE pad.

3. Turn the dial to Defrost, then press the dial to enter.

4. Turn the dial to By food type, then press the dial to enter.

5. Turn the dial to select food type, then press the dial to enter.

6. Turn the dial to the food weight, using the Conversion Guide. See Microwave power levels section in the Owner's Manual for instructions. For example, dial 1.2 for 1.2 pounds (1 pound, 3 oz.) Press the dial to enter.

7. Press the dial or START/PAUSE pad to start defrosting.

8. Turn the food over when the oven signals Turn food over.

Sensor Cooking

Do not use the sensor features twice in succession on the same food portionit may result in severely overcooked or burnt food. If food is undercooked after the  rst countdown, use Cook by Time for additional cooking time.

The proper containers and covers are essential for best sensor cooking.

• Always use microwave-safe containers and cover them with lids or vented plastic wrap. Never use tight sealing plastic containersthey can prevent steam from escaping and cause food to overcook.

• Be sure the outside of the cooking containers and the inside of the oven are dry before placing food in the oven. Beads of moisture turning into steam can mislead the sensor.

• Popcorn and potatoes are best heated uncovered.

Convection

See Load Algorithm Chart for load operation in Convection.

How to convection bake:

1. Press CONV BAKE pad.

2. Turn the dial to set the temperature, then press the dial to enter.

3. Press the dial to enter and con rm the selection.

To start immediately without setting a cook time, select Start or press the START/PAUSE pad:

To set a cook time:

1. Turn the dial and select Cook Time.

2. Turn the dial to set the cook time, then press the dial to enter.

3. To start the cook time immediately, place the food in the oven and select Start Cook Time, then press the dial or the START/PAUSE pad to start. The cook time will immediately start to count down.

(Continued Next Page)

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To start cook time after preheat:

1. Select Start Preheat. The oven will signal once the oven reaches the cooking temperature.

2. Place the food in the oven, then press the START/PAUSE pad. The cook time will begin to count down.

• If the oven door is opened during cooking, Pause-Door open or Oven is hot will appear in the display.

Close the door and press START/PAUSE pad.

• Cook times are shown in hours and minutes and can be set to a maximum of 2 hours 59 minutes. Time can be changed during cooking by turning the dial.

Cooking Tips for Convection Baking:

• Metal pans are recommended for all types of baked products, but especially where browning is important.

• Dark or dull  nish metal pans are best for breads and pies because they absorb heat and produce crisper crust.

• Shiny aluminum pans are better for cakes, cookies, or muf ns because they re ect heat and help produce a light tender crust.

• Glass or glass-ceramic casserole or baking dishes are best suited for egg and cheese recipes due to the cleanability of glass.

• When baking on one level, use the lower level. The top clips are to only be used in two-level baking.

Broil

See Load Algorithm Chart for load operation in Broil.

How to Broil:

1. Press the COOKING OPTIONS pad.

2. Turn the dial to Broil, then press the dial to enter.

3. Place the food in the oven, then select START or press the START/PAUSE pad to start.

If the oven door is opened during cooking, Pause-Door open or Oven is hot will appear in the display. Close the door and press the START/PAUSE pad.

• For best performance, preheat the oven for 5 minutes when broiling meat. Chicken performs best with no preheating.

• Foods should be turned halfway through broiling time.

• Remove thinner pieces, as needed, to prevent overcooking and drying.

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Toast

See Load Algorithm Chart for load operation in Toast.

How to Toast:

1. Press the COOKING OPTIONS pad.

2. Turn the dial to Toast, then press the dial to enter.

3. Turn the dial to set the toast time, and place the food in the oven, then select START or press the START/ PAUSE pad to start.

If the oven door is opened during cooking, Pause-Door open or Oven is hot will appear in the display. Close the door and press the START/PAUSE pad.

Cooking Tips for Toasting

• For best results when toasting, use the metal tray.

• No turning is necessary for most foods.

• When toasting nuts, stir halfway through the cooking time.

• Toast thicker pieces a longer time, thinner pieces a shorter time.

Warm

See Load Algorithm Chart for load operation in Warm.

The WARM feature will keep hot, cooked foods at serving temperature. Always start with hot food. Use cookware and utensils that can withstand temperatures up to 230°F.

1. Press the COOKING OPTIONS pad.

2. Turn the dial to select Warm, then press the dial to enter.

3. Turn the dial to select the level of moisture you want, then press the dial to enter. See the chart and tips in the Warming section of the Owner's Manual.

4. Select START or press the START/PAUSE pad to start. The oven starts warming immediately and shows the amount of warming time to complete.

If the oven door is opened during warming, Pause-Door open or Oven is hot will appear in the display. Close the door and press the START/PAUSE pad.

To crisp stale items:

• Select the Crisp setting. Preheat the oven for 10 minutes.

NOTE: Only preheat when crisping stale items.

• Place food or dishes directly on the metal tray.

• Check crispness after 45 minutes. Add time as needed.

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Proof

See Load Algorithm Chart for load operation in Proof.

The proo ng feature automatically provides an appropriate temperature for the proo ng process, and therefore does not have a temperature adjustment.

1. Press the COOKING OPTIONS pad.

2. Turn the dial to select Proof, then press the dial to enter.

3. Select START or press the START/PAUSE pad to start. The oven starts proo ng immediately and shows

the amount of proo ng time to complete.

• Check bread products early to avoid over-proo ng.

• To avoid lowering the oven temperature and lengthening proo ng time, do not open the oven door unnecessarily.

NOTES:

• Do not use the proo ng mode for warming food or keeping food hot. The proo ng oven temperature is not hot enough to hold foods at safe temperatures. Use the Warm feature to keep food warm.

• Proo ng will not operate if the oven is too hot . Allow the oven to cool before proo ng.

Idle

When the microwave is in the idle or clock mode, all heaters are off, the damper is open, and the clock is displayed. It is normal for the time of day to change positions on the display. This is done to avoid pixel burn in. The fans are normally off, but may be on if the oven has recently  nished a cycle. (See

Cool Down.)

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Control Features

With your Advantium oven, you can cook with high-intensity halogen lights, ceramic heaters, convection heating element, and/or conventional microwave energy.

DISPLAY

Shows feature selections and information about the oven when in use.

START/PAUSE

Press this pad to start or pause any cooking function.

CLEAR/OFF

Press this pad to cancel ALL oven programs except clock, auto night light, timer, vent fan, and surface light.

SPEEDCOOK

Press this pad to access the pre-set speedcook menu or to set your own speedcook program.

Pro le panel shown

SELECTOR DIAL

Turn to select. Press to enter. Turn to select food, power level, or temperature selections. Also use the dial to increase (turn clockwise) or decrease (turn counterclockwise) time. Simply press the button to enter the selection.

CONV BAKE

Press this pad to use convection bake.

MICROWAVE

Press this pad to access the microwave menu or to set your own microwave program.

SETTINGS

Press this pad to set the clock and access Turntable On/Off, Auto Conversion, Auto Night Light, Beeper Volume, Display On/Off, Reminder, and Temperature Units.

COOKING OPTIONS

Press this pad to access Repeat Last, Broil, Proof, Toast, Warm and Delay Start .

MICRO 30 SECS

Starts the microwave for 30 seconds of cooking time. An additional 30 seconds is added to the remaining cooking time each time the pad is pressed.

TIMER ON/OFF

BACK

Press this pad to step back one or more levels in the programming process.

HELP

Press this pad to  nd out more about your oven’s features.

Press this pad to set a minute and seconds timer.

SURFACE LIGHT

Press this pad to turn the cooktop light on and off.

VENT

Press this pad to turn the vent fan on and off.

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Demo Mode

Demo Mode On

Clock: Set hour

Push

Dial

to set

0:00

Demo Mode Off

The sales demo mode will allow dealers to demonstrate all oven functionality with one exception. (See #1 below.)

The sales demo mode can only be entered during the initial Clock: Set hour display that occurs when the unit powers up after a long (greater than 60 seconds) power outage.

Clock: Set hour

0:00

Push

The sales demo mode will be initiated by holding the START/PAUSE and HELP pads down at the same time for a full 3 seconds.

Demo Mode On

When sales demo mode is initiated, 2 short-beeps are sounded and all oven functions will operate with the following exceptions;

1. No power shall ever be applied to the heaters, halogen lamps, magnetron high voltage transformer, or Inrush control relays. The control relays for any of these loads shall not be switched during sales mode.

2. The DEMO icon will be lit whenever the unit is in sales mode regardless of settings or the feature being selected.

Dial

to set

The sales demo mode is cleared by holding the START/PAUSE and HELP pads down at same time for a full 3 seconds. The sales mode can only be cleared during the same initial Clock: Set hour display that occurs when the unit powers up after a long (greater than 60 seconds) power outage. After 5 seconds elapse, all functions of the oven will return to normal operation.

When power-up occurs, software will check the special sales demo identi er code. If the code is set, then the oven will stay in the sales demo mode. This will prevent the unit from powering back up to a normal mode if power to the salesroom had gone off.

Demo Mode Off

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Installation

WARNING: Risk of Electric Shock. Can cause injury

or death: THIS APPLIANCE MUST BE PROPERLY GROUNDED to avoid severe or fatal shock.

A quali ed electrician must perform a ground continuity check on the wall receptacle before beginning the installation to ensure that the outlet box is properly grounded. If not properly grounded, or if the wall receptacle does not meet electrical requirements noted (under Electrical Requirements), a quali ed electrician should be employed to correct any de ciencies.

The wall outlet receptacle recommended for this application is NEMA #14-30R and accepts the fourprong grounded plug of this appliance.

NEMA 14–30R Wall Receptacle

Advanced Planning

The product should not be installed over any cooktop or range with a combined BTU greater than 60000 BTU.

This oven is for installation over ranges up to 36 inches wide.

The space between the cabinets must be 30 inches wide and free of obstructions. If the space between the cabinets is greater than 30 inches, a  ller panel kit may be used to  ll in the gap between the oven and the cabinets. Filler panel kits available from GE are: White - JX52WH, and Black - JX52BL. These  ller kits are for installation between cabinets only and are not for end-of-cabinet installation.

Maximum cabinet depth above and beside the unit is 13 inches.

When installing the oven beneath smooth,  at cabinets, be careful to follow the instructions on the top cabinet template for power cord clearance.

Ensure proper ground exists before use.

Caution:

• For personal safety, the mounting surface must be capable of supporting the cabinet load, in addition to the added weight of this 63–85 pound product, plus additional oven loads of up to 50 pounds or a total weight of 113–135 pounds.

• For personal safety, this product cannot be installed in cabinet arrangements such as an island or a peninsula. It must be mounted to BOTH a top cabinet AND a wall.

• To avoid the risk of personal injury (back injury or other injuries due to excessive weight of the microwave oven) or property damage, you will need two people to install this microwave oven.

For models with top venting holes: Do not allow cabinetry or other objects to block the air ow of the vent.

If the oven is to be vented outside, it is important that venting be installed using the most direct route and with as few elbows as possible. This ensures clear venting of exhaust and helps prevent blockages. Also, make sure dampers swing freely and nothing is blocking the ducts.

Note: The total duct length of 3¼" x 10" rectangular or 6" diameter round duct should not exceed 140 equivalent feet. Refer to the Installation Instructions (Hood Exhaust Section) for exhaust duct preparation.

Electrical Requirements

Product rating is 120/208 or 120/240 volts, 60 Hertz, 30 amps and 6.5 kilowatts. The outlet box should be located in the cabinet above the oven and away from any potential microwave oven ducting. The outlet box and supply circuit should be installed by a quali ed electrician and conform to the National Electrical Code or the prevailing local code.

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Page 17

Front View

Component Locator Views

Control Panel Assembly

Convection Heater Assembly

Turntable

Right Side View

Magnetron

Convection Heater TCO

Convection Motor

Relay PCB

Hood TCO

Magnetron TCO

Thermistor

High Voltage

Transformer

Magnetron Fan Motor

Convection Heater

Capacitor

Diode

Lower Cooling Motor

(Continued Next Page)

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Page 18

Top View

Upper Heater Assembly

Upper Cooling Motor

Power Supply Board

Ventilation Motor Capacitor

Ventilation Blower and Motor

Air Tunnel Cover

Air Tunnel Inlet

Air Tunnel Outlet

Humidity Sensor

Bottom View

Oven Lamp

(Cavity) Cover

Noise Filter 2

Noise Filter 1

Lower Heater Assembly

Turntable Motor

Lower Blower Motor

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Page 19

Control Boards and Panel Connections

Control Panel Assembly (rear view)

VFD Board

Smart Board

Relay Board

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Page 20

Component Access Chart

Components

WARNING:

• The oven is heavy and requires two people to remove from the cabinet. Care should be taken when removing and installing.

• Sharp edges may be exposed when servicing. Use caution to avoid injury. Wear Kevlar gloves or equivalent protection.

Serviceability - Unit Removed

Serviceability - Unit Installed

Air Tunnel Cover

Air Tunnel Inlet Air Tunnel Outlet

Bottom Cover

Bottom TCO (Thermal Cut Out)

Capacitor and Diode

Control Panel Assembly

Convection Heater Assembly

Cooktop Lamp and Receptacle

Damper Assembly

Door Assembly

Door Interlock Switches

Grill

High Voltage Transformer

Hood TCO (Thermal Cut Out)

Humidity Sensor

Lower Cooling Motor

Lower Heater Assembly

Magnetron

Magnetron Fan Motor Assembly Magnetron TCO (Thermal Cut Out) Noise Filters

Noise Filter Fuses Outer Cover Oven Lamp (Cavity) Assembly Oven TCO (Thermal Cut Out) Power Supply Board Stirrer Assembly (Stirrer Motor requires removal) Thermistor Turntable Motor

Upper Cooling Motor Upper Heater Assembly and TCOs

Ventilation Motor

Ventilation Motor Capacitor

– 20 –

Page 21

Oven Removal

Grill

The oven is hooked on metal tabs at the bottom of the wall mounting plate and fastened to the cabinet with 4 top cabinet bolts.

To remove the oven from the cabinet or wall opening:

WARNING: This oven requires 2 people for complete

oven removal.

1. Disconnect power to the oven.

2. For top-vented models, disconnect the duct and remove the damper assembly.

Caution: When removing the oven, be sure to provide adequate support to prevent dropping the unit.

3. Remove the 4 top cabinet bolts.

4. Rotate the front of the oven down from the bottom of the cabinet.

5. Lift the oven and unhook it from the tabs of the mounting plate.

To remove the Grill:

1. Remove 2 Phillips-head screws that attach the Grill to the top of the Outer Cover.

2. Open the door.

3. Slide the Grill to the left and remove.

Grill

Outer Cover

To gain access to many of the oven components, it is necessary to remove the Outer Cover.

To remove the Outer Cover:

1. Remove the oven. (See

2. Remove 6 Phillips-head screws from the bottom of the oven.

Oven Removal.)

(Continued Next Page)

– 21 –

Page 22

3. Remove 7 Phillips-head screws from the back of the oven.

Control Panel Assembly

The Control Panel Assembly consists of a Relay Board, Smart Board, frame, and a touch pad/ escutcheon. The Control Panel Assembly is attached to the oven with a Phillips-head screw and 6 tabs.

To remove the control panel assembly:

1. Disconnect power to the oven.

4. Remove the Phillips-head screw from the left side of the oven.

2. Remove the Grill. (See

Grill.)

3. Remove the Phillips-head screw from the top left corner of the control panel.

4. Lift the control panel up and disengage the 6 tabs from the oven.

5. Pivot the panel out from the oven. Mark and disconnect the wire harnesses that connect the Control Panel Assembly to the oven.

5. Remove 8 Phillips-head screws, Grill (See

Grill.),

and the power cord bracket from the top of the oven.

6. Slide the cord out from the cutout on top of the oven.

Cord Bracket

7. Slide the Outer Cover back about 1 inch toward the rear of the oven, then lift the cover from the oven.

– 22 –

Page 23

Door Assembly

The door is available as a complete assembly or as individual parts.

A microwave leakage test must be performed any time a door is removed, replaced, disassembled, or adjusted for any reason. The maximum leakage is 4 MW/CM

The Door Assembly utilizes permanently attached upper and lower hinge pins. Each pin engages a hole in each hinge arm attached to the oven.

To remove the door,  rst remove the glass turntable, then remove the Grill. (See be lifted up to disengage the door's upper and lower hinge pins from the hinge arms protruding from the oven.

Grill.) The door can then

To disassemble the door:

1. Place the door face down on a protective surface.

2. Using a putty knife, carefully pry the choke cover away from the door frame.

Choke Cover

3. Remove the 5 Phillips-head screws from the choke (3 on top, 1 each on bottom and latch side).

4. Using a  at blade screwdriver, disengage the 13 door frame retainers (4 each on top and bottom, 3 on hinge pin side, and 2 on latch side). Separate the door frame from the door panel.

Retainers (1 of 13)

5. Using long nose pliers, remove the latch spring. Slide and remove the latch from the choke.

Latch

Latch Spring

(Continued Next Page)

– 23 –

Page 24

6. Remove the 3 Phillips-head screws that attach the door handle to the door frame.

Bottom Cover

It is necessary to remove the Bottom Cover to remove the Turntable Motor, lower heater, lower blower motor, and High Voltage Transformer.

To remove the Bottom Cover:

1. Remove the 11 Phillips-head screws that attach the Bottom Cover to the oven.

2. Lower the front of the Bottom Cover, then disconnect the cooktop light wire harness.

7. Remove the 6 Phillips-head screws that attach the top and bottom glass retainers to the door frame.

Top Glass Retainer

3. Remove the Bottom Cover from the oven.

Disconnect

Bottom Glass Retainer

8. Carefully lift the 2 glass retainers and glass from the door frame.

– 24 –

Page 25

Air Tunnel Inlet

The Air Tunnel Inlet must be removed to access the Damper Motor, damper door switch, and damper door assembly.

To remove the Air Tunnel Inlet:

8. Remove the rear Phillips-head screw underneath the ventilation motor receptacle.

9. Disconnect the wires attached to the ventilation motor capacitor.

1. Remove the control panel. (See

Assembly.)

Control Panel

2. Remove the Phillips-head screw from the top right corner of the oven frame.

3. Remove the Air Tunnel Cover. (See Air Tunnel

Cover.)

4. Disconnect the power cord wire harnesses.

5. Remove the Phillips-head screw that attaches the power cord ground wire to the oven frame.

6. Remove the Phillips-head screw that attaches the power cord neutral wire retainer to the Air Tunnel Inlet.

7. Disconnect wiring to both  lter boards and the Phillips-head screw that attaches both  lter board ground wires to the oven frame.

Disconnect

10. Disconnect the stirrer motor wire harness. (See

Stirrer Assembly.)

11. Disconnect the wires attached to the cooling fan motor. (See

Magnetron Fan Motor.)

12. Disconnect the wire harnesses attached to the power board. (See

Power Supply Board.)

13. Remove the Phillips-head screw that attaches the power board ground wire to the oven chassis.

14. Using long nose pliers, squeeze the tabs on each side and push the ventilation motor receptacle from the Air Tunnel Inlet.

Disconnect

Neutral Wire

Retainer

Disconnect

15. Remove 6 Phillips-head screws that attach the Air Tunnel Inlet to the oven.

Ventilation Motor Receptacle

(Continued Next Page)

– 25 –

Page 26

16. Lift up the Air Tunnel Inlet, then remove wiring from the 2 retainers.

Retainer

17. Push wiring thru the entry hole, then remove the Air Tunnel Inlet.

5. Lift the cover and disconnect the light bulb wire harness.

Air Tunnel Cover

The Air Tunnel Cover must be removed when replacing the upper halogen heaters, heater TCOs, and Stirrer Motor.

To remove the Air Tunnel Cover:

1. Remove the Outer Cover. (See

2. Remove the Ventilation Motor. (See Ventilation

Motor Removal

3. Compress the 2 pins holding the 2 wire retainers to the air tunnel cover.

Outer Cover.)

Harness

Air Tunnel Outlet

The Air Tunnel Outlet must be removed to access the Oven TCO, halogen heaters, and halogen heater TCOs.

To remove the Air Tunnel Outlet:

1. Remove the Humidity Sensor. (See

Sensor Removal.)

2. Remove the 3 Phillips-head screws that attach the Air Tunnel Outlet to the oven.

Humidity

4. Remove the 8 Phillips-head screws that attach the cover to the top of the oven.

(Continued next page)

– 26 –

Page 27

Air Tunnel Outlet

Humidity Sensor

3. Lift and turn the Air Tunnel Outlet over, then disconnect the oven TCO wires.

Power Supply Board

CN103

CN1

Note: Callout arrows identify location of pin #1.

• Location (See Top View.)

• Generates all DC voltages.

4. Note the routing of wiring thru Air Tunnel Outlet retainers, then remove wiring from retainers.

Disconnect

• Requires 120 VAC between CN1 pins 1 and 3.

• 18 VDC (CN103 pin1) is used to power the Smart Board.

• 12 VDC (CN103 pin 2) is used to operate the Buzzer and back light (Back Light is Monogram Only).

• 12 VDC (CN103 pin 3) is used to power relays on the Relay Board.

• 5 VDC (CN103 pin 4) is used to operate the VFD.

• All DC voltages are measured to DC Ground (CN 103 pin 5).

Troubleshooting

If one or more (but not all) voltages are missing, replace Power Supply Board.

If all Power Supply voltages are missing, check voltage between Power Supply Board CN1 pins 1 and 3.

– 27 –

• If 120 VAC is present, replace Power Supply Board.

• If 120 VAC is not present, see

Dead Unit.

Troubleshooting

(Continued next page)

Page 28

Disassembly

To remove the Power Supply Board:

Relay Board

1. Remove the Outer Cover. (See

Outer Cover.)

2. Disconnect the 2 wire harnesses from the power board.

3. Remove the Phillips-head screw and ground wire from the oven frame.

4. Remove the 2 Phillips-head screws that attach the power board to the Air Tunnel Inlet.

Disconnect

CN01

RY7

CN16

RY9

RY11

CN6

RY12

CN5

RY14

Note: Where applicable, board callout arrows identify pin #1.

• Location (See Control Boards and Panel

Connections.)

• Used for load switching, but also contains voltage compensation circuits and the Buzzer.

• To energize relays that operate any of the heat sources, the Smart Board has to supply a 12 VDC relay operating voltage (CN01 pin

2), a 5 VDC relay enable voltage (CN01 pin 28), and another 5 VDC "turn on" voltage. (See

Chart on the next page.)

Relay

• To energize relays that operate loads that are not heat sources, all of the above is required except for the "relay enable" voltage.

• Buzzer is activated by supplying DC Ground to CN02-29.

• DC Ground is on CN01 pins 4, 5, and 6.

(Continued next page)

– 28 –

Page 29

Troubleshooting

Relay Chart

If all relays are not closing, see

All relays not closing.

If one or more (but not all) relays are not closing, see

Single Relay Not Closing,

If all Cooking relays are not closing, see

Not Closing

If the Buzzer is not working, see

Buzzer.

Relay Enable

Note: To gain better access to components, remove the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board.) is routed through.

All Relays Not Closing:

Check voltage between Relay Board CN5 pins 1 and 3.

If 120 VAC is not present, the wire between Relay Board CN5 pin 3 and neutral output of Noise Filter 1 is open.

If 120 VAC is present, continue to next check.

Relay

Connector #

and Pin #

Cavity Light Relay CN01-7 Cooktop Lamp Bright Relay CN01-8 Cooktop Lamp Night Relay CN01-9 Turntable Motor Relay CN01-10 Damper Motor Relay CN01-11 Convection Motor Relay CN01-12 Magnetron Fan Motor and Stirrer

CN01-13

Motor Relay Ventilation Fan High Relay CN01-14 Ventilation Fan Low Relay CN01-15 Ventilation Fan Slow Relay CN01-16 Upper Cooling Motor Lower Cooling Motor

Relay CN01-17

Relay CN01-18

Upper Heater Halogen 1 Relay CN01-20 Upper Heater Halogen 2 Relay CN01-22

Lower Heater Relay CN01-24 Convection Heater Relay CN01-25

High Voltage CN01-27

Check voltage between Relay Board CN01 pins 2 and 4.

• If 12 VDC is present, replace the Smart Board.

• If 12 VDC is not present, Smart Board is not supplying relay operating voltage. (See

Board troubleshooting section.)

Smart

Single Relay Not Closing

Locate the inoperative relay in the Relay Chart in next column.

Check voltage between the selected relay pin and Relay Board CN01 pin 4.

• If 5 VDC is present, replace Relay Board.

• If 5 VDC is not present, replace Smart Board.

Note: For situations where the above mentioned 5 VDC is not present, some relays operate loads that can be controlled by the consumer from the Glass Touch Assembly. If the in-operative relay is such, make sure the option is selected at the key panel. If it is, and the relay is still inoperative, check harness between Glass Touch Assembly and Smart Board. If harness is OK, replace Glass Touch Assembly and Smart Board.

Relay Enable Not Closing

Check voltage between Relay Board CN01 pins 4 and 28.

• If 5 VDC is present, replace Relay Board.

• If 5 VDC is not present, replace Smart Board.

Buzzer

When Buzzer should be on, check voltage between Relay Board CN01 pins 3 and 4.

• If 12 VDC is not present, the Smart Board is not supplying the Buzzer operating voltage. (See

Smart Board troubleshooting section.)

• If 12 VDC is present, replace Smart Board and Relay Board.

(Continued next page)

– 29 –

Page 30

Disassembly

To remove the Relay Board:

Smart Board

1. Disconnect power to the oven.

2. Remove the control panel assembly. (See

Control Panel Removal.)

3. Remove the 5 Phillips-head screws.

4. Carefully unplug the Relay Board from the Smart Board.

CN101

CN20

CN103

CN10

CN09

CN7

CN102

CN15

CN8

CN02

30-pin Receptacle

Note: Callout arrows identify location of pin #1.

• Location (See Control Boards and Panel

Connections.)

• Part of the control panel assembly.

• Performs all logic operations of the microwave. Contains all cooking and operating algorithms. Uses the relay board to switch loads.

• All DC voltages generated by the Power Supply Board pass through the Smart Board.

• Requires +18 VDC between CN103 pins 1 and 5 (Powers the Smart Board).

Troubleshooting

If the Smart Board is not supplying 5 VDC to the VFD, see

VFD Operating Voltage.

If the Smart Board is not supplying relay operating voltage to the Relay Board, see Relay Operating

Voltage

Relay Board

If the Smart Board is not supplying Back Light or Buzzer operating voltage, see Back Light or Buzzer

Operating Voltage

(Continued next page)

– 30 –

Page 31

VFD Operating Voltage

To remove the Smart Board:

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board (See tie that the Smart Board

Smart Board.), is routed through.

Relay Board.), and cut the wire

CN103 wire harn ess (See

Check voltage at Smart Board CN103 pins 4 and 5.

• If 5 VDC is present, replace Smart Board.

• If 5 VDC is not present, check the harness between the Smart Board and Power Supply Board. If OK, replace Power Supply Board.

Relay Operating Voltage

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Check voltage at Smart Board CN103-03 and CN 103-05.

• If 12 VDC is present, replace Smart Board.

1. Disconnect power to the oven.

2. Remove the control panel assembly. (See

Control Panel Removal.)

3. Remove the Relay Board. (See Relay Board Removal.)

4. Disconnect wire harnesses at CN102, CN15, and CN10.

5. Remove the 2 Phillips-head screws from the bottom of the Smart Board.

6. Lift and remove the Smart Board from the top 2 retainers.

Note: When replacing the Smart Board, transfer the board spacer to the replacement board.

Retainer

• If 12 VDC is not present, check the harness between the Smart Board and Power Supply Board. If OK, replace Power Supply Board.

Back Light or Buzzer Operating Voltage

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board

.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Check voltage at Smart Board CN103 pins 2 and 5.

• If 12 VDC is present, replace Smart Board.

• If 12 VDC is not present, check the harness between the Smart Board and Power Supply Board. If OK, replace Power Supply Board.

Jumper Harness

Board Spacer

Smart Board

Disconnect

– 31 –

Page 32

Glass Touch Assembly

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board

.) is routed through.

Check voltage between Smart Board CN102 pins 10 and 12.

• If 5 VDC is present, check the harness between the Smart Board and Glass Touch Assembly. If OK, replace Glass Touch Assembly and Smart Board.

• If 5 VDC is not present, replace the Smart Board.

If the Backlight (Monogram Only) is not working:

Check to see if the Buzzer is working.

• If Buzzer is not working, the Smart Board is not supplying Buzzer and backlight operating voltage. See

Smart Board Troubleshooting

Section.

• Part of the control panel assembly.

• Converts user touch to electrical signals.

• Has nothing to do with the display.

• Requires 5 VDC from Smart Board. Voltage can only be checked between Smart Board CN102 pins 10 and 12.

• Contains the back light (Monogram only).

Troubleshooting

If some keys are working:

Check the harness between the Smart Board and Glass Touch Assembly. If OK, replace Glass Touch Assembly and Smart Board.

• If Buzzer is working, replace Smart Board and Glass Touch Assembly.

Disassembly

To remove the Glass Touch Assembly:

1. Disconnect power to the oven.

2. Remove the control panel assembly. (See

Control Panel Removal.)

3. Remove the Relay Board. (See

Relay Board Removal.)

4. Remove the Smart Board. (See

Smart Board Removal.)

5. Remove the VFD Board. (See

VFD Board Removal.)

6. Remove the Selector Board. (See

Selector Board Removal.)

If no keys are working:

Disconnect Smart Board connector CN15. Re-test Glass Touch Assembly.

• If keys are working correctly, replace the Selector Knob.

• If keys are not working correctly, continue to next check.

– 32 –

Page 33

Selector Board

Pin 1

• If resistance is not approximately 0 , replace Selector Board.

• If resistance is approximately 0 , repeat the steps above for pins 2 and 3.

• If resistance readings are correct, check resistance between pins 4 and 5. Resistance should be in nite. If not, replace Selector Board.

• If resistance is correct, press the selector knob in. While knob is pressed in, resistance should be approximately 0 .

• If resistance is correct, replace Smart Board. If resistance is incorrect, replace Selector Knob.

Disassembly

To remove the Selector Board:

1. Disconnect power to the oven.

• Location (See Control Boards and Panel

Connections.)

• Part of the control panel assembly.

• Used for menu navigation, in general, rotating clockwise increments selections; rotating counterclockwise decrements selections. Pressing the knob in makes a selection.

• Pins 4-5 close when switch shaft is pressed in and open when shaft is released.

• Pins 1-2 and pins 2-3 close when the shaft is rotated in either direction.

Note: When shaft is rotated, detents can be felt. If shaft is stopped between detents, pins 1-2 and 2-3 are closed.

Troubleshooting

Disconnect Smart Board connector CN15. Check resistance between pin 1 and pin 2 of the CN15 harness. Resistance should be in nite.

2. Remove the control panel assembly. (See

Control Panel Removal.)

3. Remove the Relay Board. (See

Relay Board Removal.)

4. Remove the Smart Board. (See

Smart Board Removal.)

5. Pull the selector knob off.

6. Remove the 3 Phillips-head screws holding the Selector Board in place.

• If resistance is not in nite, replace the Selector Board.

• If resistance is in nite, slowly rotate the selector knob in either direction. As switch passes from one detent to the next, resistance should read approximately 0 .

Selector Board

– 33 –

Page 34

VFD Board (Vacuum Florescent Display)

CN1

Disassembly

To remove the VFD Board:

Disconnect power to the oven.

1. Remove the control panel assembly. (See

Control Panel Removal.)

2. Remove the Relay Board. (See Relay Board Removal.)

3. Remove the Smart Board. (See

Smart Board Removal.)

Note: Callout arrow identi es location of pin #1.

• Location (See

Connections.)

Control Boards and Panel

• Part of the control panel assembly.

• Displays information to the user.

• Requires 5 VDC between VFD Board CN1 pins 11 and 17 to operate.

• Display data comes from the Smart Board.

• Font information is contained in the VFD software.

• All text is displayed in green.

Troubleshooting

If the display is displaying incorrect or incomplete data:

4. Remove the 2 Phillips-head screws and remove the control panel and selector wiring from the retainer. Slide the VFD Board down from the retainers.

Note: When replacing the VFD Board, transfer the Jumper harness to the replacement VFD Board.

VFD Board

Retainer

Check the harness between the Smart Board and VFD. If OK, replace VFD and Smart Board.

If the display is not lit (dead):

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board.) is routed through.

Check voltage between VFD Board CN1 pins 11 and

17.

• If 5 VDC is present, check the harness between the Smart Board and VFD. If OK, replace VFD and Smart Board.

• If 5 VDC is not present, Smart Board is not supplying operating voltage to the VFD. See Smart Board troubleshooting section.

Jumper Harness

(Continued next page)

– 34 –

Page 35

Noise Filter (1)

Noise Filter (2)

• Location (See Component Locator Views.)

• Helps suppress electromagnetic interference radiating from the oven. Also protects the microwave from any line noise.

• Contains two 20-amp fuses (WB27x10388).

Troubleshooting

Check voltage at Noise Filter 1 input.

• If 120 VAC is present, check both fuses. If OK, replace Noise Filter 1.

• If 120 VAC is not present, check wiring from power cord to Noise Filter 1.

Disassembly

To remove Noise Filter (1):

1. Disconnect power to the oven.

2. Remove the Outer Cover. (See

Outer Cover.)

3. Disconnect  lter board wiring.

• Location (See Component Locator Views.)

• Prevents arcing between the heater and sheath of the convection heater.

• Contains two 20-amp fuses (WB27x10388).

Troubleshooting

Check voltage at Noise Filter 2 input.

• If 120 VAC is present, check both fuses. If OK, replace Noise Filter 2.

• If 120 VAC is not present, ensure house supply voltage unit is correct. If voltage is correct, check wiring between Noise Filter 2 line, neutral, and the power cord.

Disassembly

To remove Noise Filter (2):

1. Disconnect power to the oven.

2. Remove the Outer Cover. (See

Outer Cover.)

4. Remove the Phillips-head screw and the  lter board ground wire from the oven frame.

5. Remove the 2 Phillips-head screws holding the  lter board in place.

3. Disconnect  lter board wiring.

4. Remove the Phillips-head screw and the  lter board ground wire from the oven frame.

5. Remove the 2 Phillips-head screws holding the  lter board in place.

– 35 –

Page 36

Upper Heater TCO's (Thermal Cut Outs)

Convection Heater TCO (Thermal Cut Out)

• Location - Attached to the Upper Heater Assembly.

• Upper Heater Halogen TCO's are labeled UHH1 and UHH2 on the schematic.

• UHH1 is a safety thermostat that interrupts power to Upper Heater Halogen 1 in the event of excessive temperatures.

• UHH2 is a safety thermostat that interrupts power to Upper Heater Halogen 2 in the event of excessive temperatures.

• Both TCO's are normally closed.

• Both open at 320°F and are non-resettable.

Disassembly

To remove either UHH1 or UHH2 TCO:

1. Remove the Air Tunnel Cover. (See

Air Tunnel Cover.)

• Location (See Right Side View.)

• Interrupts line voltage to the Convection Heater in the event of excessive temperatures.

• Normally closed.

• Opens 320°F, non-resettable

Convection Heater TCO removal:

1. Remove the Outer Cover. (See

Outer Cover.)

2. Disconnect the 2 wire harnesses from the TCO.

3. Remove the 2 Phillips-head screw that holds the TCO in place.

Right Side View

2. Remove the 3 Phillips-head screws that attach the Air Tunnel Outlet to the oven. (See

Air Tunnel Outlet.)

3. Lift and position the Air Tunnel Outlet to the right.

4. Disconnect the 2 wires from the TCO.

5. Remove the Phillips-head screw that attaches the TCO to the heat shield.

TCO

Oven TCO (Thermal Cut Out)

• Location - Inside the Air Tunnel Outlet.

• Automatically shuts off oven in case the cavity overheats for any reason.

• If the Oven TCO opens, it will disable all oven functions including the display.

• Normally closed.

• Opens 320°F, non-resettable.

– 36 –

Page 37

Oven TCO removal:

1. Remove the 3 Phillips-head screws from the Air Tunnel Outlet. (See

Air Tunnel Outlet.)

2. Turn the Air Tunnel Outlet over.

3. Disconnect wiring to the Oven TCO.

4. Remove the Phillips-head screw that attaches the TCO to the metal plate.

5. Slide the TCO out from the tab.

Magnetron TCO

Disconnect

Air Tunnel Outlet

Oven TCO

Disconnect 2 Wires

Magnetron TCO (Thermal Cut Out)

• Location (See Right Side View.)

• Automatically shuts off oven in case the magnetron tube overheats.

• If the magnetron TCO opens, it will disable all oven functions including the display.

• Normally closed.

• Opens 320°F, non-resettable.

To remove the Magnetron TCO:

Bottom TCO (Thermal Cut Out)

• Location - On the base behind the control panel.

(See photo below.)

• Used to disable oven in the event of a cooktop  re. Purpose is to keep the ventilation fan from sucking  ames into the oven.

• If the Bottom TCO opens, it will disable all oven functions including the display.

• Normally closed.

• Opens 320°F, non-resettable.

To remove the Bottom TCO:

1. Pivot the Control Panel Assemblyout from the oven. (See

2. Disconnect wiring from the Bottom TCO.

3. Remove the Phillips-head screw that attaches the Bottom TCO to the oven, then pull the TCO towards the right.

Control Panel Removal.)

1. Pivot the Control Panel Assemblyout from the oven. (See

Control Panel Removal.)

2. Disconnect wiring from the Magnetron TCO.

3. Remove the Phillips-head screw that attaches the Magnetron TCO to the air guide, then pull the TCO towards the bottom.

– 37 –

Disconnect

Bottom TCO

(Continued next page)

Page 38

Hood TCO (Thermal Cut out)

Upper Heater Interlock Switch

• Location - On the base behind the control panel.

(See Below.)

• Used to turn on the ventilation fan motor if the bottom of the microwave gets too hot.

• When switch is open, 5 VDC can be read on the Smart Board between pins 1 and 2 of CN20. When switch is closed, voltage goes to 0 VDC.

• Normally open.

• Closes at 158°F, opens at 122F.

Hood TCO removal:

1. Pivot the Control Panel Assembly out from the oven. (See

Control Panel Removal.)

2. Disconnect wiring to the Hood TCO.

3. Remove the Phillips-head screw that attaches the Hood TCO to the oven. Pull the TCO forward.

• Attached to the latch bracket. (See picture in Door Switch Removal section.)

• Switch functions as an interlock for the upper heaters. Upper heaters are disabled when the door is open.

• Switch is closed when door is closed and open when door is open.

To remove the upper heater interlock switch:

(See

Door Switch Removal.)

Monitor Switch

• Attached to the latch bracket. (See picture in Door Switch Removal section.)

• The switch is intended to render the oven inoperative by means of blowing either of the 20-amp fuses on Noise Filter 1. This occurs when voltage is applied to the High Voltage Transformer and the Monitor Switch is closed. This creates a direct short between line and neutral.

Disconnect

Hood TCO

• Switch is closed when door is open and open when door is closed.

To remove the Monitor Switch:

(See

Door Switch Removal.)

Primary Interlock Switch

• Attached to the latch bracket. (See picture in Door Switch Removal section.)

• Switch functions as an interlock for the high voltage section.

• Switch is closed when door is closed and open when door is open.

• If the primary interlock fails to close, the high voltage, Turntable Motor, and Convection Fan Motor will not operate.

To remove the Primary Interlock Switch:

– 38 –

(See

Door Switch Removal.)

Page 39

Door Sensing Switch

• Attached to the latch bracket. (See picture in Door Switch Removal section.)

• Provides door status to the Smart Board.

• Switch is closed when door is closed and open when door is open.

• When switch is open, 5 VDC can be read on the Smart Board between pins 1 and 3 of CN7. When switch is closed, voltage goes to 0 VDC.

To remove the Door Sensing Switch:

(See

Door Switch Removal.)

Door Switch Removal

1. Remove the control panel. (See Control Panel

Removal

2. Disconnect wiring to the door switches.

3. Remove the 2 Phillips-head screws that attaches the plastic latch bracket to the microwave oven frame, then remove the latch bracket.

4. Using a small  at blade screwdriver, release the tabs and remove the door switch from the latch bracket.

Damper Switch

• Location - Behind control panel next to oven cavity.

• Part of the Damper Assembly.

• The Damper Switch is used for a timing event. When the damper door is closed and then opened, a timer is triggered on the Smart Board. The Damper Motor will run until the timer has timed out. This time-based motor operation is used for both opening and closing the damper.

Latch

Bracket

Primary Interlock Switch

Upper Heater Interlock Switch (located behind

monitor switch)

Monitor Switch

Door Sensing Switch

• Switch is open when the damper door is closed.

• When switch is open (damper door closed), 5 VDC can be read on Smart Board between pins 3 and 4 of CN7. When switch is closed, voltage goes to 0 VDC.

To remove the Damper Switch:

(See

Damper Assembly Removal.)

– 39 –

Page 40

Damper Motor

Actuator Arm

Damper Assembly

The Damper Assembly consists of inlet and outlet damper doors, Damper Motor, and Damper Switch. The inlet damper door, Damper Motor, and Damper Switch are located below the Air Tunnel Inlet. The outlet damper door is located below the Air Tunnel Outlet. (See

The Damper Motor has a D-shaped shaft that is inserted into the top of the inlet damper door, and inserted into a link. The link is connected to an actuator arm that operates the outlet damper door.

Component Locator Views.)

Link

• Location - Behind control panel next to oven cavity.

• 120 VAC

• 3.36 K :

• 6 RPM

• Part of the Damper Assembly.

• Opens and closes inlet and outlet damper.

Troubleshooting

If Damper Motor is not running:

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through. Check voltage between

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

either side of the Bottom TCO and Relay Board CN6 pin 5.

Inlet Damper

Damper Motor

Damper Switch

Inlet Damper Door

• If 120 VAC is present, problem is with Damper Motor or wiring to motor. (See

Wiring Diagram.)

• If 120 VAC is not present, the relay on the Relay Board is not closing. (See troubleshooting section.)

If Damper Motor runs continuously:

Check the Damper Switch circuit. (See

Switch.)

To remove the Damper Motor:

(See

Damper Assembly Removal.)

Outlet Damper

Smart Board

Outlet

Damper

Door

Damper

Actuator Arm

(Continued next page)

– 40 –

Page 41

To remove the Damper Assembly:

1. Remove the Outer Cover. (See

Outer Cover.)

2. Remove the control panel assembly. (See

Control Panel Removal.)

3. Remove the latch bracket.

4. Remove the Air Tunnel Inlet. (See

Air Tunnel Inlet.)

5. Remove the 3 Phillips-head screws holding the Damper Assembly to the Convection Heater Assembly.

Damper Motor

Damper Switch

Humidity Sensor

• Location (See Top View.)

• The Humidity Sensor detects the increasing humidity released during cooking.

• Problems with the Humidity Sensor will show up as "Sensor Open" on the display.

Humidity Sensor Test

Note:

• The oven should be plugged in at least 5 minutes before test.

• Room temperature should not exceed 95°F.

• Be sure the exterior of the cooking container and interior of the oven are dry.

• No sensor cooking is available while the oven is hot. Wait 5 minutes after using Broil, Toast, Warm, Convection Bake, or Speedcook to allow the oven to cool enough to use sensor cooking.

To test the Humidity Sensor, it is necessary to access the control panel. (See

Assembly

.) The humidity sensor wire harness must

Control Panel

be disconnected from CN8 on the power board. On the humidity sensor wire harness, check for approximate resistance values between:

Black-Red = 6.5 K :

Red-White = 3.25 K :

Inlet Damper Door

Black-White = 3.25 K :

(Continued next page)

– 41 –

Page 42

To remove the Humidity Sensor:

1. Remove the Outer Cover. (See Outer Cover.)

2. Remove the Air Tunnel Cover. (See Air Tunnel Cover.)

3. Remove the 2 Phillips-head screws that hold the sensor in place.

Humidity Sensor

Thermistor

• Location (See Right Side View.)

• The upper thermistor (blue and white wires) is used for thermal compensation and more control in a higher temperature range (above 300°F) for Speed Cook, Broil, Toast, and Convection.

• To test the upper thermistor, disconnect Smart Board CN09. Check resistance between the blue and white wires. Resistance at room temperature is 100K ohm.

• The lower thermistor (red and white wires) is used for more control in a lower temperature range (below 300°F) and is used for Proof and Warm.

• To test the lower thermistor, disconnect Smart Board CN9. Check resistance between the red and white wires. Resistance at room temperature is 256K ohm.

To remove the Thermistor:

1. Remove the Outer Cover. (See

Outer Cover.)

2. Remove the Phillips-head screw holding Thermistor is place.

– 42 –

Page 43

Upper Heater Halogen 1 and 2

Heater 1

Upper Heater Halogen 1 Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Set oven for Speedcook, upper power level set to 10. (See

Operating Modes for set up instructions.)

Start Speedcook cycle, while unit is running, check resistance between the 2 terminals on Relay Board RY 7. Caution: Wires must not be connected the relay.

Heater 2

• Location (See Top View.)

• The picture above shows the Upper Heater Assembly. There are 2 halogen heaters in the assembly that are referenced on the schematic as Upper Heater Halogen (1) and Upper Heater Halogen (2).

• Each heater is 1200 Watts

• Approximately 10 Amps

• Approximately 1.8 to 3.7 :

• For operating algorithms see

Chart.

Load Algorithm

Troubleshooting

For Upper Heater Halogen 1, see

Halogen 1 Troubleshooting.

Upper Heater

For Upper Heater Halogen 2, see Upper Heater

Halogen 2 Troubleshooting

• If resistance is in nite, relay is not closing, See

Relay Board troubleshooting section.

• If resistance is approximately 0 , continue to next check.

Check voltage at house receptacle.

• If voltage is incorrect, house wiring is bad.

• If voltage is correct, problem is with Upper Heater Halogen 1, UHH1 TCO, Upper Heater Interlock Switch or wiring between these components.

Upper Heater Halogen 2 Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Set oven for Speedcook, upper power level set to 10. (See

Operating Modes for set up instructions.)

Check resistance between the 2 terminals on Relay Board RY9. Caution: Wires must not be connected the relay.

• If resistance is in nite, relay is not closing. See

Relay Board troubleshooting section.

• If resistance is approximately 0 , continue to next check.

Check voltage at house receptacle.

• If voltage is incorrect, house wiring is bad.

• If voltage is correct, problem is with Upper Heater Halogen 2, UHH2 TCO, Upper Heater Interlock Switch or wiring between these components.

Disassembly (See

Upper Heater Assembly Removal.)

– 43 –

Page 44

Upper Heater Assembly

To remove the Upper Heater Assembly:

1. Remove the Upper Cooling Motor. (See

Cooling Motor Removal.)

Note: Insulation is positioned underneath the heater shield. In the following step, note the position of the insulation for proper placement when installing the heater shield.

Upper

9. Lift the heater shield from the top of the oven.

2. Remove the Air Tunnel Cover. (See Air Tunnel

Cover

3. Remove the 3 Phillips-head screws that attach the Air Tunnel Outlet to the oven. (See Air Tunnel

Outlet.)

4. Lift and position the Air Tunnel Outlet to the right.

5. Remove the wiring from the wire ties.

6. Disconnect wires from the 2 halogen TCOs.

7. Disconnect the 2 heater wire harnesses.

8. Using a  at blade screwdriver, straighten the 2 left side folded lock tabs. Remove 5 Phillips-head screws from the heater shield.

Wire Tie

10. Using a  at blade screwdriver, straighten the folded lock tab. Remove 3 Phillips-head screws that attach the heater cover.

Ta b

Heater Cover

TCO

Tab (1 of 2)

TCO

Wire Tie

Screwdriver

Disconnect

11. Lift the heater cover from the top of the oven.

12. Remove 4 Phillips-head screws that attach the heater to the oven.

(Continued Next Page)

– 44 –

Page 45

13. Carefully lift the heater from the oven.

• Location (See Bottom View.)

• 500 Watts

• Approximately 4.2 Amps

• Approximately 27 to 42 :

Bottom View of Halogen Heater Assembly

Halogen Heater 2

• For operating algorithms see

Chart

Load Algorithm

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board

.) is routed through.

Set oven for Speedcook. Set lower power level to 10. (See Operating Modes for set up instructions.)

Check resistance between the 2 terminals on Relay Board RY11. Caution: wires must not be connected to the relay.

• If resistance is in nite, relay is not closing. See

Relay Board troubleshooting section.

• If resistance is approximately 0 , continue to next check.

Check voltage at house receptacle.

Lower Heater (Ceramic)

Halogen Heater 1

• If voltage is incorrect, house wiring is bad.

• If voltage is correct, problem is with Lower Heater Ceramic or wiring to heater.

Disassembly

To remove the Lower Heater (Ceramic) assembly:

1. Remove the Bottom Cover. (See

Bottom Cover.)

2. Disconnect the turntable and heater wire harnesses, then remove wiring from the 2 wire retainers.

Wire Retainers

Disconnect

(Continued Next Page)

– 45 –

Page 46

3. Remove the 6 Phillips-head screws that attach the heater assembly to the oven.

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Set oven for Speedcook. Set convection power level to 10. (See

Operating Modes for set up instructions.)

Check resistance between the 2 terminals on Relay Board RY12. Caution: wires must not be connected to the relay.

• If resistance is in nite, relay is not closing, See

Relay Board troubleshooting section.

Convection Heater

• Location (See Right Side View.)

• 1500 Watts

• If resistance is approximately 0 , continue to next check.

Check voltage between Noise Filter 2 line out and Noise Filter 2 neutral out.

• If 120 VAC is present, problem is with Convection Heater, Convection Heater TCO, or wiring from Noise Filter 2 to the Convection Heater.

• If 120 VAC is not present, Noise Filter 2 is not supplying operating voltage to the Convection Heater. See

Noise Filter 2 troubleshooting

section.

Disassembly (See

Removal.)

Convection Heater Assembly

Convection Fan Motor

• Approximately 12.5 Amps

• Approximately 9.6 :

• Convection Heater is a part of the Convection Heater Assembly.

• For operating algorithms, see

Chart

Load Algorithm

• Location (See Right Side View.)

• 120 VAC

• Single Speed

• Approximately 27 : (Continued Next Page)

– 46 –

Page 47

• Convection Heater is a part of the Convection Heater Assembly.

• For operating algorithms, see Load Algorithm Chart.

8. Remove the 3 Phillips-head screws and straighten the 2 tabs that attach the duct extension to the bottom of the oven. Remove the duct extension.

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board

.) is routed through.

Check voltage between either side of the Bottom TCO and Relay Board CN6 pin 7.

• If 120 VAC is not present, convection relay is not closing. See

Relay Board troubleshooting

section.

• If 120 VAC is present, problem is with Convection Motor or wiring (See

Diagram

.) to motor.

Wiring

To remove the convection fan motor:

(See

Convection Heater Assembly.)

Convection Heater Assembly

Disassembly

To remove the convection heater assembly:

1. Remove the Outer Cover. (See

Outer Cover.)

Ta b

Duct Extension

9. Place the oven on its left side.

10. Disconnect wiring connected to the Bottom TCO, hood TCO, high voltage transformer primary, convection TCO, convection heater, and lower blower motor.

11 Remove the Convection Heater and lower

blower motor wires from 2 retainers located in front of the transformer.

12. Remove the Phillips-head screw that attaches the bottom of the baseplate to the back of the oven.

2. Remove the door. (See Door Assembly.)

3. Remove the control panel. (See Control Panel

Assembly Removal

4. Remove the latch bracket. (See Door Switch

Removal.)

5. Remove the Magnetron. (See

Removal.)

6. Remove the Bottom Cover. (See

Magnetron

Bottom Cover.)

7. Disconnect the turntable motor and heater wire harness.

Disconnect

(Continued Next Page)

– 47 –

Page 48

13. Remove the Phillips-head screw that attaches the power board ground wire to the chassis.

14. Remove the 5 Phillips-head screws from the top of the fan cover.

15. Push the top of the cooling fan cover toward the rear of the oven, then carefully lift the baseplate from the oven.

16. Remove the 3 Phillips-head screws that attach the damper to the Convection Heater Assembly.

Damper Assembly Removal.)

(See

17. Remove the 2 bottom Phillips-head screws that attach the bottom of the Convection Heater Assembly to the oven.

18. Remove the four 7-mm hex nuts that attach the Convection Heater Assembly to the oven.

19. Position the damper toward the front of the oven, then lift the bottom of the Convection Heater Assembly out from the oven.

(Continued Next Page)

– 48 –

Page 49

Convection Heater

End View of Element

The convection heater element is held in place by 3 Phillips-head screws. (Two screws on the front, and 1 screw on the end.)

The Convection Fan Motor is attached to the motor bracket with two 7-mm hex nuts. To access the hex nuts, remove the 3 Phillips-head screws and the fan motor bracket that is attached to the Convection Heater Assembly.

Rear View of Convection Fan Motor

Convection Fan Motor

Fan Motor Bracket

Front View of Convection Fan Motor

Convection Fan Motor

The convection fan must be removed before removing the motor. The convection fan is held in place by a 7-mm hex-head nut, lockwasher, and  at washer.

Front View of Outer Convection Fan

Hex Nut

Oven Lamp (Cavity)

• Location (See Top View.)

• Part of the

• 120 VAC

• 20 Watts

• Halogen

• For operating algorithms, see

Chart.

Oven Lamp (Cavity) Assembly.

Hex Nut

Load Algorithm

(Continued Next Page)

– 49 –

Page 50

Troubleshooting

Note:

If it has been veri ed the issue is not with the bulb, and 120 VAC is not present at the socket, perform the following steps:

Note: To gain better access to components, remove the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board.) is routed through.

Check voltage between either side of the Bottom TCO and Relay Board CN5 pin 5.

• If 120 VAC is present, problem is with wiring (See

Wiring Diagram.) to socket.

• If 120 VAC is not present, the oven lamp (cavity) relay on the Relay Board is not closing. See Relay Board troubleshooting section.

To remove the Oven Lamp:

Oven Lamp (Cavity) Assembly Removal.)

(See

• If necessary, pull the light bulb out and replace with a 120V-130V, 20W halogen bulb (part # WB25X10019).

• The light bulb receptacle is attached to the shield with 2 Phillips-head screws and two 7/32in. hex-head nuts.

• A wire harness connects the receptacle to the shield.

Light Bulb

Harness

Cooktop Lamp

Oven Lamp (Cavity) Assembly

To remove the Oven Lamp (Cavity) assembly:

1. Remove the Grill. (See

2. If present, remove the optional charcoal  lter. Slide the  lter toward the left and pull it toward the front.

3. Remove the Phillips-head screw from the right side of the lamp shield.

Lamp Shield

4. Lift the right side of the shield and remove it from the opening.

Grill.)

Location - Bottom of microwave

• 120 VAC

• 50 Watts

• Halogen

• Bright/Night/Off

Troubleshooting

If it has been veri ed the issue is not with the bulb, and 120 VAC is not present at the socket, perform the following steps:

Note: To gain better access to components, remove the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board.) is routed through.

If Bright is not working, check voltage between either side of the Bottom TCO and Relay Board CN 06-01.

• If 120 VAC is present, problem is with wiring (See

Wiring Diagram.) to socket.

• If 120 VAC is not present, the cooktop lamp "bright" relay on the Relay Board is not closing. See

Relay Board troubleshooting section.

If Night is not working, check voltage between either side of the Bottom TCO and Relay Board CN6 pin 1.

(Continued Next Page)

– 50 –

Page 51

• If approximately 60 VAC is present, problem is with wiring (See

Wiring Diagram.) to socket.

• If approximately 60 VAC is not present, the cooktop lamp "night" relay on the Relay Board is not closing. See

Relay Board troubleshooting

section.

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

To remove the Cooktop Lamp and receptacle:

1. Remove the Bottom Cover. (See

Bottom Cover.)

2. Remove the Phillip-head screw and the light cover from the Bottom Cover.

3. Gently pull the light bulb from the receptacle.

4. Remove the 2 Phillips-head screws and 7/32-in. hex nuts from the lamp receptacle.

Receptacle

Ventilation Motor

No high speed fan:

Check voltage between either side of the Bottom TCO and Relay Board CN16 pin 1.

• If 120 VAC is present, problem is with Ventilation Motor or wiring (See

Diagram.) to motor.

Wiring

• If 120 VAC is not present, the ventilation fan high relay on the Relay Board is not closing. See

Relay Board troubleshooting section.

No medium speed fan:

Check voltage between either side of the Bottom TCO and Relay Board CN16 pin 3.

• If 120 VAC is present, problem is with Ventilation Motor or wiring (See

Diagram) to motor.

Wiring

• If 120 VAC is not present, the ventilation fan low relay on the Relay Board is not closing. See

Relay Board troubleshooting section.

• Location (See Top View.)

• 120 VAC

• High/Low/Slow/Off

• Approximately 100 : from capacitor yellow wires.

• For operating algorithms, see

Chart.

Load Algorithm

• Can be positioned to recirculate or vent outside.

No slow speed fan:

Check voltage between either side of the Bottom TCO and Relay Board CN16 pin 5.

• If 120 VAC is present, problem is with Ventilation Motor or wiring (See

Diagram) to motor.

Wiring

• If 120 VAC is not present, the ventilation fan slow relay on the Relay Board is not closing. See

Relay Board troubleshooting section.

Motor only hums in all speeds:

Rotate the fan blade by hand. If it does not rotate freely, check for obstructions in the blade. If clear, replace Ventilation Motor.

If motor starts up by rotating the blades, disconnect power. Pull the two yellow wires off the Motor Capacitor (See

Removal) and check resistance between the 2 yellow

Ventilation Motor Capacitor

wires.

(Continued Next Page)

– 51 –

Page 52

• If circuit is open, problem is with Ventilation Motor or wiring (See

Wiring Diagram) to motor.

Note: The ventilation motor electrical disconnect is located inside the Outer Cover.

• If resistance is approximately 100 , replace the Motor Capacitor.

Disassembly

To remove the Ventilation Motor:

1. Remove the oven. (See

Oven Removal.)

Note: In the following step, the exhaust adapter with damper is not used on recirculating installations.

2. Remove the 2 Phillips-head screws and the exhaust adapter with damper from the oven.

3. Remove the 3 Phillips-head screws from the blower plate.

4. Slide the blower plate from under its retaining  ange.

Flange

7. Locate the lock tab on top of the disconnect and position a  at blade screwdriver as shown below.

8. Using the blower opening in the Outer Cover as a pivot point, carefully press down on the lock tab while disconnecting the electrical connector.

Lock Tab

Disconnect

Pivot Point

5. Remove the 2 Phillips-head screws that attach the ventilation motor to the back of the oven.

View From Rear

6. Lift up the ventilation motor and place it on top of the oven as shown below.

Ventilation Motor Capacitor

• Location (See Top View.)

• 120 VAC

• If Ventilation Motor is humming and not moving, (but can still be hand started), check capacitor, capacitor wiring to motor, and motor windings.

(Continued Next Page)

– 52 –

Page 53

• The ventilation motor capacitor is located on the Air Tunnel Inlet behind Noise Filter 2. (See

View.)

Top

To remove the Ventilation Motor Capacitor:

1. Remove the Outer Cover. (See

Outer Cover.)

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

2. Disconnect wiring to the motor capacitor.

3. Remove the Phillips-head screw that attaches the motor capacitor to the Air Tunnel Inlet.

Disconnect

Upper Cooling Motor

Check voltage between either side of the Bottom TCO and Relay Board CN16 pin 7.

• If 120 VAC is present, problem is with Upper Cooling Motor or wiring (See

Wiring Diagram)

to motor.

• If 120 VAC is not present, the

Upper cooling

motor relay on the Relay Board is not closing. See Relay Board troubleshooting section.

Disassembly

To remove the Upper Cooling Motor:

1. Remove the Outer Cover. (See

Outer Cover.)

2. Disconnect wiring to the Upper Cooling Motor.

3. Remove and capture the 2 Phillips-head screws located beneath the access openings on top of the Air Tunnel Outlet.

4. Remove the Phillips-head screw behind the Upper Cooling Motor.

Duct

• Location (See Top View.)

• 120 VAC

• Single speed

• Approximately 15 :

• For operating algorithms, see

Chart.

Disconnect

Motor

Load Algorithm

(Continued Next Page)

– 53 –

Page 54

5. Remove the 3 Phillips-head screws from the left side of the Upper Cooling Motor.

6. Slide the Upper Cooling Motor out from the top of the oven.

Lower Cooling Motor

• Location (See Right Side View.)

7. Remove the 4 Phillips-head screws and the duct from the Upper Cooling Motor.

Duct

8. Remove the Phillips-head screw that attaches the bottom plate and side plate to the Upper Cooling Motor.

Side Plate

Bottom Plate

• 120 VAC

• Single speed

• Approximately 45 :

• For operating algorithms, see

Chart.

Load Algorithm

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Check voltage between either side of the Bottom TCO and Relay Board CN16 pin 9.

• If 120 VAC is present, problem is with Lower Cooling Motor or wiring (See

Wiring Diagram)

to motor.

• If 120 VAC is not present, the Lower Cooling Motor relay on the Relay Board is not closing. See

Relay Board troubleshooting section.

(Continued Next Page)

– 54 –

Page 55

Disassembly

To remove the Lower Cooling Motor:

1. Remove the Outer Cover. (See

Outer Cover.)

2. Disconnect wiring to the Lower Cooling Motor.

Disconnect

3. Remove the Bottom Cover. (See Bottom Cover.)

4. Remove the 3 Phillips-head screws and straighten the 2 tabs that attach the duct extension to the bottom of the oven. Remove the duct extension.

Blower Outlet

Blower Base

7. Move the Lower Cooling Motor toward the right and carefully maneuver the Lower Cooling Motor out from the oven.

Magnetron Fan Motor

Fan Motor

Ta b

5. Remove the 3 Phillips-head screws that attach the blower outlet to the bottom of the Lower Cooling Motor.

6. Remove the 3 Phillips-head screws that attach the lower cooling motor base to the baseplate.

• Location (See Component Locator Views.)

• 120 VAC

• Single speed

• Part of the Magnetron Fan Assembly.

• The fan motor assembly has an approximate resistance value of:

Red to Blue/Black = 46.6 : Red to Brown = 36 : Brown to Blue/Black = 10.8 :

• For operating algorithms, see

Chart.

– 55 –

Load Algorithm

(Continued Next Page)

Page 56

Troubleshooting

Note:

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Check voltage between either side of the Bottom TCO and Relay Board CN6 pin 9.

• If 120 VAC is present, problem is with Magnetron Fan Motor or wiring (See

Diagram

.) to motor.

Wiring

• If 120 VAC is not present, the magnetron fan motor relay on the Relay Board is not closing. See

Relay Board troubleshooting section.

Disassembly (See Magnetron Fan Assembly.)

Magnetron Fan Assembly

To remove the Magnetron Fan Assembly:

1. Remove the Outer Cover. (See Outer Cover.)

• In the following step, 2 screw access holes have been provided in the back of the oven to remove 2 fan cover screws.

• Use a magnetic Phillips-head screwdriver (recommended).

3. Remove and capture the 2 Phillips-head screws that attach the bottom of the fan cover to the air guide.

Air Guide

Access Hole (1 of 2)

Fan

Cover

Screw (1 of 2)

4. Remove the 3 Phillips-head screws that attach the top of the fan cover to the oven chassis.

2. Note the location of the fan motor wire harness and wire, then disconnect the fan motor wiring.

Disconnect

Fan Cover

(Continued Next Page)

– 56 –

Page 57

5. Release the fan cover bottom 2 tabs from the air guide by pushing up the bottom of the fan cover while pulling it toward the front of the oven.

Tab (1 of 2)

Stirrer Motor

• Location - Top of the oven cavity.

6. Push the top of the fan cover toward the rear of the oven, then carefully remove it from the oven.

Note: In the following step, the fan blade is  rmly attached to the D-shaped motor shaft. It may be helpful to use 2  at blade screwdrivers, as shown, to remove the blade from the motor shaft.

7. Carefully pry up the fan blade from the motor shaft.

• 21 VAC

• Approximately 120 :.

• Part of the Stirrer Assembly.

• The stirrer motor circuit is a series circuit with the Magnetron Fan Motor. 120 VAC is supplied to the magnetron fan, the magnetron fan drops 99 VAC, leaving 21 VAC to operate the Stirrer Motor.

Troubleshooting

Check to see if Magnetron Fan Motor is running. If yes, the problem is with the Stirrer Motor or wiring (See

Wiring Diagram.) to motor.

If Magnetron Fan Motor is not running, see

Magnetron Fan Motor troubleshooting.

Disassembly (See Stirrer Motor Removal.)

8. Remove the 2 Phillips-head screws that attach the fan motor to the fan cover.

– 57 –

Page 58

Stirrer Assembly

The Stirrer Assembly consists of a motor, blade, and cover. The blade is motor-driven and rotates on a pin embedded in the stirrer cover. The Stirrer Assembly is located at the top of the oven cavity.

To remove the Stirrer Motor:

Note: It is not necessary to remove the stirrer blade

when removing the Stirrer Motor.

1. Remove the Air Tunnel Cover. (See

Cover.)

Air Tunnel

To remove the stirrer blade:

Note: It is not necessary to remove the Stirrer Motor

when removing the stirrer blade.

1. Disconnect power from the microwave oven and open the door.

2. Remove the 2 Phillips-head screws that attach the cover to the oven cavity.

3. Lower the left side of the cover approximately 1 inch, then slide it to the left and remove the cover from 2 tabs located on the right.

Ta b

Stirrer Cover

Ta b

2. Disconnect the stirrer motor wire harness.

3. Remove the 2 Phillips-head screws that attach the Stirrer Motor to the top of the oven.

4. Lift the left-side of the Stirrer Motor and then remove it from the oven.

Stirrer Motor

Disconnect

4. Lift the stirrer blade off the pin embedded in the cover.

Blade

Caution: When installing the Stirrer Motor, misalignment of the stirrer blade hub can damage the stirrer cover. Before installing the Stirrer Motor, use a screwdriver inserted into the stirrer blade hub to pre-align the square drive of the stirrer blade to allow engagement of the motor shaft.

Stirrer Blade Hub

– 58 –

Page 59

Turntable Motor

Disassembly

To remove the Turntable Motor:

1. Remove the turntable, turntable support, and the Bottom Cover.

2. Remove the 2 Phillips-head screws.

• Location (See Bottom View.)

• 120 VAC

• Approximately 2.6 K :.

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See the Smart Board

Board.) is routed through.

Relay Board.) Cut the wire tie that

CN103 wire harn ess (See Smart

Check voltage between either side of the Bottom TCO and Relay Board connector CN6 pin 3.

• If 120 VAC is present, problem is with Turntable Motor, Primary Interlock Switch, or wiring (See

Wiring Diagram.) to motor.

• If 120 VAC is not present, the Turntable motor relay on the Relay Board is not closing. See

Relay Board Troubleshooting Section.

Disconnect

Note

• When replacing the Turntable Motor, be sure the RF gasket is positioned over the motor shaft and between the motor and motor plate, as shown below.

• When replacing the turntable support, ensure it is fully seated into the "D" shaped shaft of the turntable motor and is  ush with the oven  oor.

Motor Plate

RF Gasket

(Continued Next Page)

– 59 –

Page 60

High Voltage Transformer

Troubleshooting

To troubleshoot High Voltage Transformer primary voltage, see

Magnetron troubleshooting section. To

test the High Voltage Transformer:

Check the following resistances:

Red to Yellow (primary) - .5 :

Red/Black to chassis ground (secondary) - 80 :

Magnetron harness ( lament high voltage) - .2 :

If resistance values are correct, High Voltage Transformer is OK.

Disassembly

To remove the High Voltage Transformer:

• Location (See Right Side View.)

• The transformer steps up 120 VAC line voltage to high voltage, which is then changed to an even higher DC voltage by the Capacitor and Diode.

• WARNING: Always be certain the capacitor is discharged before servicing. (See

and Diode.) Use electrician's discharge pliers

Capacitor

and electrician's gloves under Kevlar gloves or equivalent protective gloves when discharging the capacitor.

• Note: The capacitor has an internal discharge resistor that automatically discharges the capacitor when the oven turns OFF. Under normal operation, the capacitor should fully discharge within 30 seconds.

• Check the high voltage transformer windings for approximate resistance value between:

Red to Yellow (primary) - .5 :

1. Remove the Outer Cover. (See

2. Remove the Bottom Cover. (See

Outer Cover.)

Bottom Cover.)

3. Remove the duct extension to access 1 of the 4 Phillips-head screws that attach the transformer to the baseplate. (See

Removal

, step 4.)

Lower Cooling Motor

Red/Black to chassis ground (secondary) - 80 :

Magnetron harness ( lament high voltage) - .2 :

• For operating algorithms, see

Chart "Microwave".

Load Algorithm

Before disconnecting the primary and secondary wire connections, note the wire locations. The wire connectors are  rmly attached and DO NOT use releasing locking tabs.

– 60 –

Page 61

Magnetron

• Location (See Right Side View.)

• If resistance is in nite, the magnetron relay on the Relay Board is not closing, See

Relay Board

troubleshooting section.

• If resistance is approximately 0 , problem is with one or more of the high voltage components. Check resistance of the magnetron  lament . If OK, see

Transformer Capacitor and Diode Troubleshooting Section.

Troubleshooting Section or see

High Voltage

To remove the Magnetron:

1. Remove the Outer Cover. (See Outer Cover.)

2. Disconnect the magnetron TCO wires.

3. Disconnect the magnetron  lament wire harness.

• Filament resistance less than 1 :.

• The Magnetron converts the high voltage supplied by the transformer, capacitor, and diode into radio frequency waves of electromagnetic cooking energy.

• WARNING: Always be certain the capacitor is discharged before servicing. (See

and Diode.

) Use electrician's discharge pliers

Capacitor

and electrician's gloves under Kevlar gloves or equivalent protective gloves when discharging the capacitor.

• For operating algorithms, see

microwave section.

Chart

Load Algorithm

Troubleshooting

Note: To gain better access to components, remove

the wires that plug onto the large relays on the Relay Board. (See

Relay Board.) Cut the wire tie that

the Smart Board CN103 wire harn ess (See Smart

Board.) is routed through.

Disconnect

Note: In the following step, an overlapping metal shield may limit access to the 2 rear screws that attach the Magnetron to the oven. It may be necessary to pry back the shield while removing the 2 screws.

4. Using a large  at blade screwdriver, pry back the metal shield and remove the 2 rear Phillipshead screws.

Set oven for Speedcook. Set microwave power level to 10. (See

Operating Modes for set up instructions.)

Start Speedcook cycle.

Caution: In the following check, wires must not be connected to the relay. While unit is running, check resistance between the 2 terminals on Relay Board RY14.

(Continued Next Page)

– 61 –

Page 62

Metal Shield

Note: The 2 front screws are recessed from the top of the metal shield. Access holes are provided. A magnetic screwdriver is necessary to capture these screws.

5. Grasp the Magnetron, then remove and capture the 2 front screws.

Capacitor and Diode

Capacitor

Diode

• Location (See Right Side View.)

• The diode works along with the capacitor to effectively double the already-high voltage that is provided by the power transformer. This voltage, approximately 3000 - 5000 VDC , is applied to the Magnetron tube, causing it to produce the microwave energy that cooks the food.

Metal Shield

6. Carefully remove the Magnetron from the oven.

Troubleshooting

Diode - Check resistance of the diode using a meter operated by a 9-volt battery. Put the red lead on the positive side of the diode and the black lead on the negative side of the diode. Meter should read low resistance. Reverse the leads and meter should read in nity.

Capacitor - Discharge capacitor, then ohm out both terminals and each terminal to the capacitor case. All readings should be in nite or very high.

To remove the capacitor or diode:

The capacitor is held in place with a bracket attached to the air guide with a tab and a Phillipshead screw. The diode is connected to the capacitor and attached to the air guide with a Phillips-head screw. It is necessary to remove the lower blower motor to access the capacitor strap and diode screws. (See

Lower Blower Motor.)

Before disconnecting the wires and diode from the capacitor, note the locations. The wire and diode connectors are  rmly attached and DO NOT use releasing locking tabs.

(Continued Next Page)

– 62 –

Page 63

WARNING: Always be certain the capacitor is discharged before servicing. Use electrician's discharge pliers and electrician's gloves under Kevlar gloves or equivalent protective gloves when discharging the capacitor. Place the pliers between the diode connection of the capacitor and the oven chassis ground.

Note: The capacitor has an internal discharge resistor that automatically discharges the capacitor when the oven turns OFF. Under normal operation, capacitor should fully discharge within 30 seconds.

Capacitor

Bracket

Capacitor Bracket Screw

Diode Screw

Air Guide

Diode

– 63 –

Page 64

Microwave Speedcook* Convection Broil** Toast** Warm Proof

Upper Heater (1)

Upper Heater (2)

Lower Heater

High Voltage Cycles by PL

Not Available Cycles by PL

(See PL Chart)

Operating Charts

Load Algorithm Chart

Not Available On On Not

(See PL Chart)

Not Available On On Not

(See PL Chart)

PL1 for  rst

(See PL Chart)

Cycles by PL (See PL Chart)

15 minutes or until preheat complete. (See Convection Chart)

Not Available

Available

On On Not

Available

Not Available

Convection Heater

Convection Fan

Damper Open Closed Closed Closed Closed Closed

TT Motor On On On On On On On Oven Lamp

(Cavity) Upper

Cooling Motor

Lower Cooling Motor

Ventilation Motor

Magnetron Fan

Not Available Cycles by

PL (See Convection Chart)

Off Always on

except Conv. PL 0 then Off.

On On On Off Off On On

Off On Off On On Off Off

ON On On On On Off Off

Off On Off On On Off Off

On On On On On On On

Preheats to and cycles around users set point.

On On On On On

Cycles at

450°F

Cycles at

450°F

Cycles from 169°F to 195°F.

(Moist) Open (Crispy)

Cycles at 95°F.

Closed

* In Speedcook, when power levels are set at 5 or above, (except convection), the power levels automatically cut back. After 10 minutes all heat sources except convection cut back to 70%, convection cuts back to 60 %. After 20 minutes, all except convection cuts back to 50%, convection remains at 60%. Voltage compensation and thermal compensation occur in Speedcook.

** Broil and toast cut back on upper and lower lamps just like speedcook.

(Continued Next Page)

– 64 –

Page 65

PL (Power Level) Chart

The programming on the Smart Board which controls the upper halogen lamps (pair) and the lower ceramic heater, as well as the high voltage/magnetron circuits, operates on a duty cycle of 32 seconds. This means the power level you select for each component controls the percentage of ON time during each 32-second period of time. For example, when the oven is set on power level 10, both the inner and outer halogen heaters will stay on 100% of the time. On power levels less than 10, both heaters will cycle together. The chart below shows on time verses off time for each power level setting.

Power Level 0 1 2 3 4 5 6 7 8 9 10 On Time (Seconds.) 0 3.2 6.4 9.6 12.8 16.0 19.2 22.4 25.6 28.8 32.0 Off Time (Seconds.) 32.0 28.8 25.6 22.4 19.2 16.0 12.8 9.6 6.4 3.2 0

Convection PL Chart

Each convection power level setting directs the convection cooking system to operate within certain parameters as shown in the table below.

0 No Element 1 275 Reaches temperature and then cycles at temperature for remainder of programmed

time.

2 285 Reaches temperature and then cycles at temperature for remainder of programmed

time.

3 295 Reaches temperature and then cycles at temperature for remainder of programmed

time.

4 305 Reaches temperature and then cycles at temperature for remainder of programmed

time.

5 315 Reaches temperature and then cycles at temperature for remainder of programmed

time. 6 325 Reaches temperature and then cycles at 325°F for remainder of programmed time. 7 350 Reaches temperature and then cycles at 325°F for remainder of programmed time. 8 375 Reaches temperature and then cycles at 325°F for remainder of programmed time. 9 400 Reaches temperature and then cycles at 325°F for remainder of programmed time.

10 425 Reaches temperature and then cycles at 325°F for remainder of programmed time.

– 65 –

Page 66

Cooldown Chart

Cooldown is initiated to bring down the temperature of the microwave after a cook cycle has been completed or the microwave has been paused. The chart below shows the length of time each fan is on when a particular cook cycle has completed or has been paused.

Magnetron Fan

Upper Cooling Motor

Lower Cooling Motor

Ventilation Motor

Door Status

Door Open

Door Closed

Door Open

Door Closed

Door Open

Door Closed

Door Open

Door Closed

Temp Microwave Broil & Toast Speedcook Convection Warm Proof

>350°F On for 3

mins.

< 350°F Off On for 3

>350°F On for 3

mins.

<350°F Off On for 3

>350°F Off On for 5

<350°F Off On for 2

>350°F Off On for 5

<350°F Off On for 2

>350°F On for 3

mins.

<350°F Off On for 2

>350°F On for 3

mins.

<350°F Off On for 2

>350°F Off On for 3

<350°F Off On for 3

On for 3 mins.

mins. On for 3

mins.

mins. On for 5

mins.

mins. On for 5

mins.

On for 3 mins.

On for 5 mins.

On for 2 mins.

On for 5 mins.

On for 2 mins.

On for 5 mins.

On for 2 mins.

On for 5 mins.

On for 2 mins.

On for 3 mins.

On for 5 mins.

On for 2 mins.

On for 5 mins.

On for 2 mins.

On for 5 mins.

On for 2 mins.

On for 5 mins.

On for 2 mins.

On for 3 mins.

Off Off

– 66 –

Page 67

Voltage Compensation

Thermal Compensation

Note: Voltage compensation only occurs when

using a preselected menu item in Speedcook. These items require compensation for accurate and consistent cooking results.

Voltage  uctuations in the power supply can cause inconsistencies in cooking. The main PCB measures line voltage at the start of each Speedcooking selection and adjusts the cooking time to achieve consistent results. Optimal line voltage, where no voltage compensation occurs, is 120 VAC. Above 120 VAC, time is subtracted from the recipe. Below 120 VAC, time is added to the recipe. The amount of voltage compensation required is dependent upon the incoming voltage at the start of the cooking cycle and the particular Speedcooking selection that is chosen.

The following chart shows the predicted compensation times based on a 5-minute Speedcook selection (e.g., Biscuits, Refrigerated, Large).

Voltage Compensation Chart

Note: Thermal compensation only occurs once and

only when using a preprogrammed menu item in Speedcook. These items require compensation for accurate and consistent cooking results.

When cooking several food items consecutively, the temperature in the oven may become very high. When Speedcooking, the Advantium automatically compensates for the increased temperature by reducing the power levels based on the following rules during each 32-second duty cycle.

Note

• Thermal Compensation occurs only ONCE and when using a pre-programmed recipe.

• Activates when oven cavity temp is greater than 220°F.

• Compensation rules:

UPL = Upper Power Level,

LPL = Lower Power Level,

Voltage Time Change (Seconds)

108 +180 110 +150 112 +120 114 +90 116 +60 118 +30 120 0 122 -21 124 -42 126 -63 128 -84 130 -105 132 -126

Note: Voltage compensation should be within 20 seconds of values in table.

Voltage compensation occurs after approximately 5 seconds of cooking operation. The display will show Optimizing time. The time will  ash and then display the new adjusted time, based on the amount of voltage compensation required.

CPL = Convection Power Level.

• No compensation if cook time is less than 2 minutes 30 seconds or greater than 13 minutes.

• If cavity temp less than 220°F, no compensation.

• If cavity temp greater than 220°F but less than 288°F, reduce UPL by 1, LPL by 2, and CPL by 2.

• If cavity temp greater than 288°F but less than 340°F, reduce UPL by 1, LPL by 3, and CPL by 2.

• If cavity temp greater than 340°F, reduce UPL by 1, LPL by 3, and CPL by 3.

• Upper thermal sensor (blue and white wires) is used for thermal compensation.

Upper Thermal Sensor

– 67 –

Page 68

Diagnostics and Service Information

Microwave Leak Test

1. Place 275 ml water in 600 ml beaker. (Part # WB64x5010)

2. Place beaker in center of Clear Glass Tray.

3. Set meter to 2450 MHz scale.

4. Turn ON for 5-minute test.

5. Hold probe perpendicular to surface being tested. Scan surfaces at the rate of one inch per second. Scan entire perimeter of door, control panel, viewing surface of door window, and exhaust vents.

6. Maximum leakage is 4 MW/CM2.

Standard Test Load

The standard test load is one liter (1000 ml) water with starting temperature of 59°F ~ 75°F in a 1000 ml beaker. (DO NOT USE ANY OTHER LOAD OR DISH AS RESULTS WILL VARY FROM STANDARD.)

PERFORMANCE TEST FOR MICROWAVE

1. Use Clear Glass Tray and the beaker (Part # WB64x0073).

2. Record initial water temperature.

3. Run at high power for 2:03 minutes.

4. Record end water temperature. The minimum difference between the initial and ending temperature should be: 32°F @ 240V.

Sensor and Keypanel Failure Detection

The control will have software to constantly detect sensor open/short failures and abnormal high temperatures. After the failure occurs, 3 to 20 minutes may elapse before the failure will be displayed to the consumer. The table below shows what will be displayed to the consumer after each particular failure is detected.

7. Record data on service invoice and microwave leakage report.

Note

• Maximum allowable leakage is 4 MW/CM2. Four MW/CM2 is used to allow for measurement and meter accuracy.

• Inform the manufacturer of any oven found to have emission in excess of 5 MW/CM2. Make repairs to bring the unit into compliance at no cost to owner and try to determine cause. Instruct owner not to use oven until it has been brought into compliance.

Display Scrolls

Upper Thermal Sensor OPEN Upper Thermal Sensor SHORTED Humidity Sensor OPEN*

Abnormal High Temp**

Lower Thermal Sensor OPEN Lower Thermal Sensor SHORTED

* Any defect of the Humidity Sensor will display OPEN.

** Oven temperature higher than the set temperature for more than 30 minutes.

SERVICE MAY

BE NEEDED

– 68 –

Page 69

Service Test Mode

SERVICE MODE COMPLETE Press dial to re-run Press Clear to terminate

SERVICE MODE

Push Dial to begin

Remove any trays (metal or glass) from the oven before starting the diagnostic mode and make sure that the door is closed. Removing the trays will allow you to see the operation of the Turntable Motor and the lower ceramic heater. Closing the door will make sure that all loads (i.e. the halogen lamps and magnetron) can be energized. Note that all safety components remain active in the service mode.

8. The control shall turn on the vent fan motor at the HIGH for 5 seconds.

9. The control shall turn on the vent fan motor at the MEDIUM for 5 seconds.

10. The control shall turn on the vent fan motor at the LOW setting for 5 seconds.

11. The control shall turn on the surface light at the HIGH setting for 5 seconds.

To start the service/diagnostics mode press the SPEED COOK pad and the KNOB for 3 seconds. To exit the service/diagnostics mode press the CLEAR/ OFF key.

Upon entering into Field Service Mode, SERVICE MODE Push Dial to begin is displayed.

SERVICE MODE

Push Dial to begin

The control will then proceed to service mode.

1. The control shall turn on upper halogen lamps (center) for 3.5 seconds.

2. The control shall turn on upper halogen lamps (exterior) for 3.5 seconds.

3. The control shall turn on lower ceramic heater for 15 seconds.

4. The control shall turn on turntable and oven light 5.0 seconds.

5. The control shall turn on Damper Motor for 15 seconds.

12. The control shall turn on the surface light at the LOW (night light) setting for 5 seconds.

After service mode is completed, the control will display SERVICE MODE COMPLETE. Press dial to re- run. Press CLEAR/OFF to terminate.

If the dial press is detected the Service Mode is restarted from the beginning. If Clear is detected a 2-short beep signal is sounded, the Service Mode is terminated and the Clock/Idle state returns.

SERVICE MODE COMPLETE Press dial to re-run Press Clear to terminate

• Once in the diagnostics cycle, control will start sequentially turning on loads/elements and advancing to the next step each time the dial is pressed or the “step” time has elapsed.

• Before advancing to the next step the current loads/components are turned off.

• If CLEAR/OFF is pressed at any time during service mode, the control shall exit service mode and return to normal operation.

6. The control shall turn on circulation fan and Convection Heater for 15 seconds.

7. The control shall turn on Magnetron and Magnetron fan for 10 seconds.

– 69 –

Page 70

Troubleshooting (Dead Unit)

1. Check voltage at the house receptacle while it is under load. Check for 240 VAC between L1 and L2, 120 VAC between L1 and neutral, and 120 VAC between L2 and neutral.

• If voltage is incorrect, problem is with house

wiring.

• If voltage is correct, continue to next check.

7. Check voltage between Noise Filter 1 line and neutral output.

• If 120 VAC is not present, go to step 11.

• If 120 VAC is present, continue to next step.

8. Check voltage between Relay Board CN5 pin 3 and Noise Filter 1 line output.

• If 120 VAC is not present, wire between CN5

pin 3 and Noise Filter 1 neutral out is open.

Note: To gain better access to components, remove the wires that plug onto the large relays on the Relay Board (See

Relay Board.) and cut the wire tie

that the CN 103 wire harn ess is routed through.

2. Check voltage between Relay Board CN5 pins 1 and 3.

• If 120 VAC is present, go to

step 12.

• If 120 VAC is not present, continue to next

check.

3. Check voltage between Relay Board CN5 pin 3 and the output of the Bottom TCO.

• If 120 VAC is present, the wire from Relay

Board CN5 pin 1 to the Bottom TCO is open.

• If 120 VAC is not present, continue to next

step.

4. Check voltage between Relay Board CN5 pin 3 and the input of the Bottom TCO.

• If 120 VAC is present, continue to next step.

9. Check voltage between Noise Filter 1 neutral output and the input of the Oven TCO.

• If 120 VAC is not present, wire between

Noise Filter 1 line out and the Oven TCO is open.

• If 120 VAC is present, continue to next step.

10. Check voltage between Noise Filter 1 neutral output and the output of the Oven TCO.

• If 120 VAC is not present, replace Oven TCO.

• If 120 VAC is present, wire is open between

the Oven TCO and Magnetron TCO.

11. Check voltage between Noise Filter 1 line and neutral input.

• If 120 VAC is present, check Noise Filter 1

fuses, if OK, replace Noise Filter 1.

• If 120 VAC Is present, replace Bottom TCO.

• If 120 VAC is not present, continue to next step.

5. Check voltage between Relay Board CN5 pin 3 and the Output of the Magnetron TCO.

• If 120 VAC is present, wire between the

Bottom TCO and Magnetron TCO is open.

• If 120 VAC is not present, continue to next

step.

6. Check voltage between Relay Board CN5 pin 3 and the Input of the Magnetron TCO.

• If 120 VAC is present, replace Magnetron

TCO.

• If 120 VAC is not present, continue to next

step.

• If 120 VAC is not present, power cord or lines from power cord to Noise Filter 1 is open.

12. Check voltage between Power Supply Board CN 1 pins 1 and 3.

• If 120 VAC is present, go to step 14.

• If 120 VAC is not present, continue to next

step.

13. Check voltage between Power Supply Board CN 1 pin 1 and Output of Bottom TCO .

• If 120 VAC is present, wire between CN1 pin

3 and the Bottom TCO is open.

• If 120 VAC is not present, wire between CN1

pin 1 and Noise Filter 1 neutral out is open.

(Continued Next Page)

– 70 –

Page 71

14. Check voltage between Power Supply Board CN 103 pins 1 and 5.

• If 18 VDC is not present, replace Power

Supply Board.

• If 18 VDC is present, continue to next step.

15. Check voltage between Smart Board CN103 pins 1 and 5.

• If 18 VDC is not present, wire is open

between Smart Board CN103 and Power Supply Board CN103.

• If 18 VDC is present, replace Smart Board.

– 71 –

Page 72

Schematic

Schematics and Wiring Diagrams

Upper Heater

Halogen 1

Upper Heater

Halogen 2

Lower Heater

Ceramic

Fuse 20A

UHH1 TCO

UHH2 TCO

UPPER HEATER

INTERLOCK SWITCH

Noise

Filter 2

Fuse 20A

Vacuum Florescent Display

(VFD)

Glass Touch Assembly

Selector Board

CN10

Smart Board

CN102

CN15

Relay Board

Convection Heater Convection Heater TCO

Fuse 20A Fuse 20A

Upper Cooling Motor

Cooktop Lamp

Lower Cooling Motor

Turntable

Motor

Filter 1

Oven Lamp

Ventilation Motor

Stirrer Motor

Monitor Switch

(Middle)

Noise

Mag Fan

Damper

Motor

Convection

Motor

Capacitor

Oven

TCO

Mag TCO

Bottom

TCO

Primary Interlock

Switch (TOP)

DAMPER

DOOR

SWITCH

(BOTTOM)

HUMIDITY

SENSOR

Hood TCO

Thermistor

Power Supply

Board

– 72 –

Diode

HV Capacitor

HV Transformer

Magnetron

Page 73

Wiring Diagram

SMART BOARD (MAIN P.C.B)

30 29

CN02

BK W BK W BK W

DOOR

SENSING

SWITCH

(BOTTOM)

DAMPER

SENSING

SWITCH

CN20

CN9

CN8

CN7

CN103

312

123

UPPER.H

(H1)

RY7

UPPER.H

(H2)

RY9

LOWER. H

RY11

(C)

CONV.H

RY12

(S)

RY14

MGT

CN01

CN16

1 2

RELAY P.C.B

CN6

CN5

CN103

POWER P.C.B (SMPS P.C.B)

THERMISTOR

HUMIDITY

SENSOR

BL11

GN2

GN1

BL11

11 9

753

179

53 1

531

CN1

DAMPER

MOTOR

W10

COLOR

SYMBER

RED R

BL10

BK3

BL10

BN1

R11

BL4

BL8

BL12

BN6

GY1

BK8

BL9

BL12

BK14

BL6

CONVECTION

MOTOR

BK6

BN4

HEATER

T.C.O

R10

BK1

BK2

BK1

BL1

BN1

BL2

BK3

BK4

BL3

BK2

BL3

BL4

BK4

BK5

BK7

BN2

GY1

BK8

BL5

BL6

BK7

BL5

BN2

BL7 BK9

BN3

R1 BL1

BK10 BK11

UPPER COOLING MOTOR

OVEN T.C.O

UPPER HEATER

HALOGEN 2 (EXTEROR)

UPPER HEATER

HALOGEN 1 (CENTER)

INPUT

NOISE FILTER1

OUPUT

INPUT

NOISE

FILTER2

OUPUT

STIRRER MOTOR

MOTOR CONDENSER

PRIMARY INTERLOCK SWITCH (TOP)

M.G.T T.C.O

HOOD T.C.O

BK9

BN3

R10

W10

BK6

BN4

FAN M OTO R

BN5

BK10

BOTTOM T.C.O

POWER CORD

BL7

BK14

MONITOR

SWITCH

(MIDDLE)

LOWER COOLING

UHH2

T.C. O

UHH1

T.C. O

OVEN

LAMP

VENTILATION MOTOR

BN6

BK11

MOTOR

UPPER HEATER

HALOGEN

INTERLOCK SWITCH

BK5

BK12

CONVECTION

HEATER

BL2

R11

BK12

R12

BK13

WHITE W

BLACK

BLUE

BROWN

YYELLOW

PINK

GRAY

GREEN

GROUND

HARNESS LEAD

PAR T LE AD

H.V.DIODE

H.V.C

M.G.T TUBE

FFA

BL8

H.V.T

BL9

BN5

COOK TOP

R12

BK13

TURNTABLE MOTOR

LAMP

LOWER HEATER CERAMIC

– 73 –

Page 74

Warranty

All warranty service provided by our Factory Service Centers,

or an authorized Customer Care

technician. To schedule service, online, contact us at GEAppliances.com, or call 800.GE.CARES (800.432.2737). Please have serial and model numbers availa ble when calling for service.

Staple your receipt here.

Proof of the original

purchase date is needed

to obtain service under

the warranty.

For The Period Of: GE Will Replace:

One Year Any part of the oven which fails due to a defect in materials or

From the date of the workmanship. During this limited one-year warranty, GE will also original purchase provide, free of charge, all labor and related service costs to

replace the defective part.

Five Years The magnetron tube, if the magnetron tube fails due to a

From the date of the original purchase

defect in materials or workmanship. During this five-year limited

warranty, you will be responsible for any labor or in-home service costs.

What GE Will Not Cover:

 Service trips to your home to teach you how

to use the product.

 Improper installation, delivery or

maintenance.

 Product not accessible to provide required

service.

 Failure of the product or damage to

the product if it is abused, misused (for example, cavity arcing from wire rack or metal/foil), or used for other than the intended purpose or used commercially.

 Replacement of house fuses or resetting

of circuit breakers.

 Replacement of the cooktop light bulbs.

 Damage to the product caused by

accident, fire, floods or acts of God.

 Incidental or consequential damage

caused by possible defects with this appliance.

 Damage caused after delivery.

   AAor ole and eclie remedy i prodct repair as provided in this Limited Warranty. Any implied warranties, including the implied warranties of merchantability or fitness for a particular purpose, are limited to one year or the shortest period allowed by law.

This warranty is extended to the original purchaser and any succeeding owner for products purchased for home use within the USA. If the product is located in an area where service by a GE Authorized Servicer is not available, you may be responsible for a trip charge or you may be required to bring the product to an Authorized GE Service Location for service. In Alaska, the warranty excludes the service calls to your home.

Some states do not allow the exclusion or limitation of incidental or consequential damages. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. To know what your legal rights are, consult your local or state consumer affairs office or your state’s Attorney General.

Warrantor: General Electric Company. Louisville, KY 40225

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