Amana Menumaster RC22MPS Service Manual

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Page 1

Service

Commercial Microwave Oven

This manual replaces RS2220001 Rev . 2. Service Manual for

Amana

Models and manufacturing

numbers in this manual

DQ22HS P1198607M DQ22HS P1107908M DQ22HS P1198617M KFC1 P1198622M MC22MP P1198701M MC22MP P1107904M MC22MP P1198703M MC22MP P1198706M MC22MPT P1198702M MC22MPT P1198704M MC22MPT P1198707M MC22MPT2 P1198705M MC22MPT2 P1198708M RC16MP P1191101M RC17 P1191104M RC17 P1198601M RC17 P1198612M RC17SD P1198623M RC20A P1198603M RC20A P1191103M RC22 P1107909M RC22 P1198604M RC22 P1198614M RC22LW P1198610M RC22LW P1198611M RC22MP P1107902M RC22MPS P1107906M RC22S P1198605M RC27 P1198608M RC27 P1198618M WDYRC P1198621M

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

RS2220001

Revision 3

November 2000

Page 2

IMPORTANT PRODUCT INFORMATION

WARNING

Precautions to be observed before and during servicing to avoid possible exposure to excessive microwave energy, or electrical shock disconnect power to oven.

(A) Do not operate or allow oven to be operated with

door open.

(B) Make the following safety checks on all ovens to

be serviced before activating the magnetron or other microwave source, and make repairs as necessary:

• Interlock operation

• Proper door closing

• Seal and sealing surfaces (arcing, wear, and other damage)

• Damage to or loosening of hinges and latches

• Evidence of dropping or abuse

service test or inspection within the microwave generating compartments, check the magnetron, waveguide or transmission line, and cavity for proper alignment, integrity, and connections.

(D) Any defective or misadjusted components in the

interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced or adjusted by procedures described in this manual before oven is released to the consumer.

(E) Check microwave leakage to verify compliance

with the federal performance standard should be performed on each oven prior to release to the consumer.

WARNING

To avoid risk of electrical shock, injury, or death, make sure these grounding instructions are followed.

Grounding Instructions

WARNING

Do not remove grounding prong when installing grounded appliance in a home or business that does not have three wire grounding receptacle, under no condition is grounding prong to be cut off or removed. It is the personal responsibility of the consumer to contact a qualified electrician and have properly grounded three prong wall receptacle installed in accordance with appropriate electrical codes

Servicing of Grounded Products

The standard accepted color coding for grounding wires is GREEN or GREEN WITH YELLOW STRIPE. These ground leads are NOT to be used as current carrying conductors. It is extremely important that the technician replace any and all grounds prior to completion of the service call. Under no condition should ground wire be left off causing a potential hazard to technicians and consumer.

WIRING

Good service practice is to never route wiring over terminals and/or sharp edges. This applies to any wiring without regard to the circuit voltage. Wire insulation material and thickness is designed and regulated for electrical spacing purpose only , but cannot always be relied upon because of possible cuts and/or abrasions, which can occur during servicing.

RS2220001 Rev. 3 2

Page 3

Table of Contents

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

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

Important Safety Information ........................................ 5

Microwave Leakage Testing......................................... 6

Equipment................................................................. 6

Procedure For Measuring Radiation Leakage .......... 6

Measurement With the Outer Panel Removed ......... 6

Measurement With a Fully Assembled Oven ............ 6

Record Keeping and Notification After Measurement 6

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

Installation

Installation ................................................................. 8

Care and Cleaning .................................................... 8

Replacing Oven Light Bulb........................................ 8

Product Information

Antennas, Antenna Gears, Antenna Motors ............. 9

Autotransformer ........................................................ 9

Blower/Fan Assembly ............................................... 9

Power Relay.............................................................. 9

Door Interlock and Monitoring Switch ....................... 9

Grease Shield ........................................................... 9

Transformers ............................................................ 9

High Voltage Capacitor ............................................. 9

High Voltage Diode (Rectifier)................................... 9

Magnetron ................................................................. 9

Thermal Protectors ................................................... 9

Keypads .................................................................... 9

Triac .......................................................................... 9

Operating Instructions

Control Panel .......................................................... 10

Pads........................................................................ 10

Readout Display...................................................... 10

“RC” Operating Instructions

Preprogrammed Pads..............................................11

Operating Preprogrammed Pads ............................. 11

V ariable T ime Entry.................................................. 1 1

Summary of Programming Multiple Stages..............11

Operating Notes .......................................................1 1

"DQ & MC" Operating Instructions

Preprogrammed Menu Items .................................. 12

Operating Preprogrammed Menu Items ................. 12

V ariable T ime Entry................................................. 12

Operating Notes ...................................................... 12

Programming Menu Items....................................... 13

Programming Multiple Stages ................................. 13

Specialized Programs

[QTY] Quantity (RC16, RC17, RC20, RC22, RC27) 14

[LMT] Limit (All Models) .......................................... 14

Programming P AUS................................................ 15

Using P AUS Function.............................................. 15

Option Programs (All Models Except WDYRC) ......... 15

WDYRC Operating Instructions ................................. 16

Component Testing Procedures................................. 17

Display Diagnostics

Service Codes......................................................... 21

S1 Watchdog - Membrane Touch Panel ............. 22

HOT Magnetron Overheating............................... 22

CS Current Sense............................................... 22

PCE1 Checksum ................................................. 23

PCE5 Communication Failure ............................. 23

PCE6 Communication Failure ............................. 23

HI High Line Voltage ........................................... 23

LO Low Line Voltage............................................ 23

Service Test – All Models Except WDYRC

Accessing Service Test Mode ................................. 24

H.V. System Test..................................................... 24

Diagnosing Individual H.V . System Components.... 24

Door Cycles and Magnetron Hours......................... 25

Power Test (Traditional 1 Liter Test)........................... 26

Troubleshooting

Initial Power Up ....................................................... 27

Stand By Condition ................................................. 28

Cook Condition ....................................................... 29

Disassembly

Latch Handle........................................................... 30

Door ........................................................................ 30

Outer Case.............................................................. 30

Inner Door Ring Assembly ...................................... 30

Hinge....................................................................... 30

Bottom Shelf ........................................................... 31

Grease Shield ......................................................... 31

Outer Case.............................................................. 31

T op Keypad ............................................................. 31

Side Keypad............................................................ 31

Low Voltage Circuit Board....................................... 31

Top Antennas .......................................................... 32

Top Antenna Motor.................................................. 32

Antenna Matching ................................................... 32

Interlock Switch Module .......................................... 33

Top Rear Magnetron ............................................... 33

Top Front Magnetron............................................... 33

Bottom Magnetron .................................................. 34

Magnetron and Control Thermal Protectors (TCO). 34

Bottom Access Panel.............................................. 34

Bottom Stirrer Motor................................................ 34

Bottom Antenna ...................................................... 35

Back Panel.............................................................. 35

Blower Wheel and Motor......................................... 35

Fan Blade................................................................ 36

H.V . Board............................................................... 36

Cavity Thermal Protector (TCO) ............................. 36

Power Cord ............................................................. 36

Component Location ............................................... 36

Wiring Diagrams and Schematics........................ 39–60

Amana Refrigeration, Inc. • 2800 220thTrail • PO Box 8901 • Amana, Iowa • 52204 • Printed in the U.S.A.

3 RS2220001 Rev. 3

Page 4

Important Information

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

IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.

Important Notices for Consumers and Servicers

WARNING

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

CAUTION

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

To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact 1-800-628-5782 first, if no answer contact the following number.

CONSUMER AFFAIRS DEPT. OR 1-319-622-5511or (1-800-843-0304) AMANA APPLIANCES, INC. CALL and ask for AMANA, IOWA 52204 Consumer Affairs

If outside the United States contact:

AMANA ATTN: CONSUMER AFFAIRS DEPT AMANA, IOWA 52204, USA Telephone: (319) 622-5511 Facsimile: (319) 622-2180 TELEX: 4330076 AMANA CABLE: "AMANA", AMANA, IOWA, USA

Recognize Safety Symbols, Words, and Labels

DANGER

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

WA R N IN G

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

CAUTION

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

damage.

RS2220001 Rev. 3 4

Page 5

Important Safety Information

CAUTION

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

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

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

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

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

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

A. Tell the user not to operate the oven. B. Contact Amana Refrigeration, Inc. immediately.

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

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

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

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

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

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

1 1.The Amana microwave oven should never be

operated with:

• Any components removed and/or bypassed.

• Any of the safety interlocks are found to be

defective.

• Any of the seal surfaces are defective, missing, or

damaged.

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

13.If servicer encounters an emission reading over 4mw/cm2 the servicer is to cease repair and contact Amana Service Department immediately for further direction. Amana Refrigeration, Inc. will contact the proper Government Agency upon verification of the test results.

5 RS2220001 Rev. 2

Page 6

Microwave Leakage Testing

WARNING

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

Equipment

• Electromagnetic radiation monitor

• 600 cc glass beaker

Procedure For Measuring Radiation Leakage

Note before measuring -

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

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

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

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

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

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

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

1 . Pour 275 ± 15 cc (9 oz ± 1/2 oz) of 20 ± 5°C. (68±

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

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

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

3. While measuring the leakage, always use the two

inch (5 cm) spacer supplied with the probe.

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

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

Measurement With the Outer Panel Removed

DANGER

Avoid contacting any high voltage components.

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

Measurement With a Fully Assembled Oven

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

Record Keeping and Notification After Measurement

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

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

RS2220001 Rev. 2 6

Page 7

Specifications

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* Suffix designates different features in similar ovens. ** MC22MP uses 20A Hubbell 320P6WM2 plug. ** MC22MPT uses 20A Twist-Loc NEMA # L6-20P plug. ** MC22MPT2 uses 20A Hubbell HBL2321S plug.

7 RS2220001 Rev. 2

Page 8

Installation

Unpacking Oven

• Inspect microwave oven for damage such as dents in door or inside oven cavity.

• Report any dents or breakage to source of purchase immediately .

Oven Placement

• Do not install microwave oven next to or above source of heat, such as pizza oven or deep fat fryer. Excessive heat may cause oven to operate improperly and shorten life of electrical parts.

• Allow air flow around unit. Leave at least 1 1/2 inches between air discharge on back of oven and back wall. Restricted air flow may cause oven to operate improperly and shorten life of electrical parts.

Care and Cleaning

Interior, Exterior and Door

1. Wash surfaces with a soft, clean cloth and

mild detergent diluted in warm water. Remove excess water from cloth before wiping oven. If desired, boil a cup of water in oven to loosen soil before cleaning.

2. Do not use cleaners containing ammonia.

3. Never pour water into oven bottom.

4. Do not use water pressure type cleaning systems.

Discharge Air Vents

There will be a slight buildup of cooking vapors along discharge louvers in back of oven on left side as viewed from the front. Clean air vent with damp cloth. Dry thoroughly .

Air Filter

Air filter is located under oven directly below door.

1. Remove air filter by turning thumb screws

counterclockwise, located on outside edges of filter.

2. Wash filter with mild detergent diluted in warm water.

Rinse and dry thoroughly .

3. Replace filter by reversing step 1.

Splatter Shield

Splatter shield keeps top of oven and antenna from getting dirty. Remove soil from shield with damp cloth.

NOTE: When removing and replacing splatter shield, be

careful not to bend antenna.

1. Unplug oven before removing splatter shield to stop antenna from rotating.

2. Remove shield by placing thumbs in front of shield. Press firmly toward back and carefully lower front of shield away from antenna. Pull shield forward, out of back slots and out of oven.

3. W ash shield in hot, soapy water. Rinse and dry thoroughly .

4. Replace splatter shield by fitting tabs into slots at top of oven back. Lift and press front of shield until shield snaps into place.

Important

• Do not wash splatter shield in dishwasher.

• Do not use abrasive cleaners

Replacing Oven Light Bulb

WARNING

To avoid electrical shock which can cause severe personal injury or death, unplug power cord or open circuit breaker to oven before replacing light bulb. After replacing light bulb, restore power.

T ools Needed

• Protective gloves

• Phillips screwdriver

• 40-watt, 250-volt appliance bulb (available at Amana

Authorized Service Centers - p/n A0282802)

CAUTION

To avoid personal injury or property damage, observe the following:

1. Allow light bulb to cool.

2. Wear gloves when replacing light bulb.

RS2220001 Rev. 2 8

1. Remove screw from access cover on top left wall of oven exterior. Remove access cover.

2. Remove bulb.

3. Replace bulb.

4. Replace access cover and screw by reversing procedure in step 1.

Page 9

Product Information

Antennas, Antenna Gears, Antenna Motors

Properly distributes microwave energy throughout the cavity .

Autotransformer

This transformer provides step-up voltage for the blower motor, antenna motors, and oven light.

Blower/Fan Assembly

Circulates cooling air throughout the machine compartment and cavity .

Power Relay

The power relay is actuated by the digital timer. The contacts on this relay complete one side of the power line to the high voltage power transformer.

Door Interlock and Monitoring Switch

WA RN IN G

All Models Except RC27 and KFC1 When the line fuse is blown the Interlock Switch Module must be replaced.

Grease Shield

Covers and protects the top antennas.

DANGER

T o avoid severe personal injury or death avoid contacting any high voltage parts. The capacitors are at high voltage (4000 volt) potential and it is extremely important that they be grounded before handling.

T ransformers

Two or three high voltage transformers are used in the unit. Each supplies high voltage A.C. for operation of the magnetron tubes.

High Voltage Capacitor

Doubles the A.C. output voltage from the high voltage transformer.

High V oltage Diode (Rectifier)

Is connected at the output side of the high voltage capacitor. It changes the voltage from A.C. to D.C. It passes current in one direction and blocks it in the other. Also refered to as a rectifier.

Model RC27 and KFC1 When the line fuse is blown the Interlock Switch Assembly and Power Relay must be replaced.

Door Interlock Switch

This microwave oven has a monitoring system to assure proper operation of the safety interlock switch.

Door Interlock Switch Assembly

The interlock switch assembly located behind the cavity front, is activated by the door guide and door hook attached to the door.

The door interlock switch assembly consist of switches that control various functions within the oven. The monitor switch assures proper operation of the safety interlock system.

The primary interlock switch and secondary interlock switch control voltage to various components.

Magnetron

With a filament voltage and the high D.C. voltage from the output of the H.V . capacitor , diode junctioning the magnetron will put out an electomagnetic radio frequency of 2450 MHz to heat the load in the oven.

Thermal Protectors

All magnetrons in this oven are protected by resettable thermal cut-outs. These thermal cut-outs are mounted directly on the body of the magnetron. If one of these thermal cut-outs open, the oven will either indicate an error code in the display or operate at reduced power.

Keypads

Allows customer operation and programming of oven.

Triac

The triac is controlled (gated) by the high voltage and low voltage circuit boards. The triac controls one side of the power line going to the high voltage power transformers.

9 RS2220001 Rev. 2

Page 10

Operating Instructions

Control Panel RC16MP, RC17, RC17SD, RC20, RC22, RC27, KFC1

DQ22, MC22

DELETE

PAUSEADD

STATUS

POWER

LEVEL

HOLD

TIME

ENTRY

READOUT DISPLAY

Pads

MENU 1

RC22, RC27, KFC1)

MENU 1, MENU 2, MENU 3

Use for independent cooking programs. For example,

MENU 1 could be breakfast items; MENU 2, lunch items; MENU 3, dinner item;

Numbers 1– 0

Selects the desired menu item and quantity program for preset programs. Numbers are also used to enter cooking times during programming mode. Press directly on digit to activate number pads.

ADD

Use to make a change to preset number pads.

PAUSE

Use to stop microwave power halfway through cooking stage and as reminder to manipulate food.

POWER LEVEL

Use to select power level. If no power level is selected, oven operates at 100% power.

HOLD

Use to operate oven with no microwave energy for programmed time.

DELETE

Use to delete preprogrammed number pads, current heating stages and power levels.

STATUS

Use in optional programming to change options. Press to move through stages 1-4 of programming.

START

Use to save changes to permanent memory .

STOP/RESET

Exits programming mode and stops cooking during cooking cycle.

TIME ENTRY

Used to program times not in oven memory . Time entry overrides preset times.

QUANTITY (

Use to select a quantity greater than 1.

MENU 2 (

RC16MP, RC17, RC17SD, RC20,

MENU 4 (

and

MENU 4, desserts.

RC16MP, RC17, RC20, RC22, RC27)

DQ22, MC22)

Readout Display

*“

EOC

” (End of Cycle)

Lights at end of cooking cycle. *“

PAUS

” (Pause)

Lights during cooking pause. “P”

Lights when viewing stage with an enabled pause or when entering programming mode.

“

POWER

”

Lights when oven is in a cook cycle. *“

COOK LEVEL

" Lights when viewing stage with reduced power or hold. Power level digit or H for hold display .

“

MENU 1

Lights active menu. *“

ITEM

”

” or “

MENU 2

”

RESET START

Lights when number is pressed to select item.

*“

LMT

” (Limit) Flashes when either user time limit or maximum time limit is exceeded.

*“

QTY

” (Quantity) (DQ22 and MC22 Only) Flashes until desired quantity is entered or 15 second time limit expires. Continuously lights during cooking cycle when quantity greater than 1 is selected.

*“

STG

” (Stage) indicator Lights when multiple cooking stages exist for the selected item.

ITEM STG QTY

ADD DEL P LMT MENU1 MEN U2 MENU3 MENU4

2 3 4

Readout Display

1 2 3 4 5 6 7 8 9 0

POWER

COOK LEVEL

RS2220001 Rev. 2 10

Page 11

“RC” and KFC1 Operating Instructions

Preprogrammed Pads

Oven contains two menus with ten preset number pads each. Heating times and power levels can be adjusted to fit menu requirements. See separate programming instructions packed with oven.

Number pads come factory-set to operate at full power for the following times. programmed identically at the factory .

Instructions are written for factory programmed ovens.

RC16MP, 17, 20, 22, 27 RC22LW only

Pads Cooking Time Cooking Time

1 10 seconds 5 seconds 2 20 seconds 8 seconds 3 30 seconds 13 seconds 4 45 seconds 26 seconds 5 1 minute 14 seconds 6 1 1/2 minutes 7 seconds 7 2 minutes 10 seconds 8 3 minutes No Time 9 4 minutes No Time 0 5 minutes No Time

On KFC1 units refer to Owners Manual for specific cooking times.

Ovens that are reprogrammed may not respond exactly as described below.

MENUS 1

and 2 pads are

Operating Preprogrammed Pads

1. Open oven door and place food in oven. Display shows “door”. Fan and light operate.

2. Close oven door. Display shows “MENU” and “ITEM” (flashing). Press desired menu pad if different than display .

NOTE: Change quantity by following procedure in step

3. If one is desired, proceed to step 4.

3. Press

4. Press desired number pad and oven operates.

5. Oven stops, display shows “EOC”, and signal

6. Open oven door.

QUANTITY

Cooking times are calculated automatically . Display shows item selected and heating time

counts down. Display shows “POWER” when microwave energy is present. Display counts down cooking time.

sounds when timing sequence is finished.

pad to increase quantities.

Variable Time Entry

1. Open oven door and place food in oven. Display shows "door". Oven fan and light operate.

2. Close oven door. Display shows "MENU" and “ITEM” (flashing). Press desired menu pad if different than display .

3. Press

4. Press numbers to enter desired cooking time.

NOTE: Change power level by following procedure in

5. Press

6. Press numbers to enter desired power level. For

7. Press

8. Oven stops and signal sounds when timing

9. Open oven door and remove food.

TIME ENTRY

steps 5-6. If 100 percent power is desired, proceed to step 7.

POWER LEVEL

LEVEL” and current power level. example, press 2 pad is 20 percent power.

START

shows “POWER” when microwave energy is present. If power level was programmed, display shows “COOK LEVEL” . Display counts down cooking time.

sequence is finished. Display shows “EOC”.

pad. Display shows “0000”.

pad. Display shows “COOK

pad and oven operates. Display

Summary of Programming Multiple Stages

1. Open oven door.

2. Press pad 1 for five seconds.

3. Press desired menu pad.

4. Press desired number pad.

5. Enter desired cooking time.

6. Press

7. Enter desired cooking time and power level.

NOTE: Repeat steps 6 & 7 for each stage.

8. Press

9. Press

NOTE: The display will show the total 4 stage cooking

STA TUS

ST ART RESET

programming.

time.

pad.

pad to lock new program.

pad or close oven door to exit

Operating Notes

If door is opened microwave energy ceases. Blower continues to operate. Close door and press pad to continue oven operation and countdown timing.

Microwave energy ceases if pressed once while oven is operating, but display shows countdown time. Press oven operation and countdown timing. Oven stops and current program is cancelled if pressed twice.

If preset pad is pushed immediately after door is opened, then closed, a slight delay occurs before oven starts and timing countdown begins.

STOP/RESET

START

STOP/RESET

START

pad is

pad to continue

pad is

11 RS2220001 Rev. 2

Page 12

“DQ & MC” Operating Instructions

Preprogrammed Menu Items

Oven can program up to 99 separate menu items. Quantities from one to nine for each menu item may be programmed. Each item may be programmed for up to 4 independent cooking stages. The 99 programmed items may be distributed or organized into groups by assigning them to any of the 4 available menus.

Operating Preprogrammed Menu Items

1. Open oven door and place food in oven. Display shows "door". Oven fan and light operate.

2. Close oven door. Active menu item indicator lights up. "ITEM" indicator flashes.

3. Press desired menu pad if different than menu displaying.

4. Press two numbers for menu item to be cooked. For example, if menu item number 3 is selected, press 0, and 3. "ITEM" indicator lights up. "QTY" and "LMT" indicators and user defined limit flash in display. This is maximum quantity of items that can be programmed to cook in the oven at one time.

5. Press number pad to enter quantity. Quantity selected, power level for stage 1 and total cooking time for all stages display. Cooking begins immediately after quantity is entered.

NOTE: If quantity selected is not within quantity limit,

signal sounds. Repeat step 4.

6. When cycle is complete, oven stops and signal sounds. "EOC" displays.

7. Open oven door and remove food.

Variable Time Entry

1. Open oven door and place food in oven. Display shows "door". Oven fan and light operate.

2. Close oven door. Display shows active menu and "ITEM".

3. Press

4. Press numbers to enter desired cooking time.

Change power level by following procedure in steps 5–6. If 100 percent power is desired, proceed to step 7.

5. Press

6. Press numbers to enter desired power level. For

7. Press

8. Oven stops and signals when timing sequence is

9. Open oven door and remove food.

TIME ENTRY

"0000".

POWER LEVEL

"COOK LEVEL" and current power level. example, press 2 pad for 20 percent power.

START

shows "POWER" when microwave energy is present. If power level was programmed, display shows "COOK LEVEL". Display counts down cooking time.

finished. Display shows "EOC".

pad. Display shows

pad and oven operates. Display

Operating Notes

If door is opened, oven energy ceases. Blower continues to operate. Close door and press START to continue oven operation and countdown timing.

If RESET is pressed once while oven is operating, oven energy ceases, but countdown time remains in display. Press START to continue oven operation and countdown timing. If RESET is pressed twice, oven stops and current program cancels.

When unit is plugged in or repowered after the loss of electricity, it will take several seconds before dashes and menu indicator display. Once displayed, unit is operational.

RS2220001 Rev. 2 12

Page 13

“DQ & MC” Programming Instructions

Programming Menu Items

1. Open oven door. Display shows "door". If door is closed or RESET is pressed before finishing programming sequence, oven exits programming mode.

2. Press and hold pad number 1 for five seconds. After five seconds, signal sounds. "P" and active menu display.

3. Press ADD to begin programming.

4. Press desired menu pad to be preprogrammed, if not displaying. "MENU" indicator displays.

5 Press two number pads to be programmed. "QTY"

(quantity) and "LIMIT" indicators and the current quantity limit flash.

NOTE: To change quantity limit:

• Press hidden enable pad. Locate hidden enable pad to the immediate left and slightly down from the MENU 1 pad. Signal sounds.

• Press number pad to enter quantity limit. Maximum quantity limit for each menu item is nine.

• Press START to save new quantity limit.

6. Press number pad to enter quantity. Quantity selected, program time and power level for stage 1 display . "STG" (stage) indicator and stage numbers with nonzero times also light up if multiple stages exist.

NOTE: If quantity selected is not within quantity limit,

signal sounds. Repeat step 5.

7. Press numbers to enter desired cooking time.

8. Press POWER LEVEL. "COOK LEVEL" indicator and current power level display .

9. Press numbers to enter power level if power level other than 100% is desired. New power level displays. For example, press pad number 2 for 20 percent power.

10.Press START pad to lock new heating time and power level in oven memory . Display shows "P".

11.Press RESET pad or close oven door to exit programming mode.

Programming Multiple Stages

1. Complete steps 1 - 9 of "Programming Menu Items".

2. Press

3. Press number pads to enter desired cooking time

4. Repeat steps 3 - 4 for additional stages.

5. Complete steps 10 - 11 of "Programming Menu

STATUS

lowest to highest (1 to 4). Display shows "PX" for one second followed by time and power level for selected stage. "P" represents program, "X" represents stage 1,2,3 or 4.

and power level.

Items".

pad to move through stages from

13 RS2220001 Rev. 2

Page 14

Specialized Programming

[QTY] Quantity (RC16MP, RC17, RC17SD, RC20, RC22, RC27, KFC1)

1. Open oven door and place food in oven.

2. Close oven door.

3. Press QUANTITY pad.

• Oven is always set for ................. QTY1

• Press QTY once .......................... QTY2

• Press QTY twice.......................... QTY3

• Press QTY three times ................ QTY4

4. Press START pad. NOTE: The oven will automatically adjust the time

setting for the QTY. programmed.

[LMT] Limit (All Models)

Maximum amount of time a customer can program a pad (number).

When time LMT is changed the time will change for all pads (numbers) in MENU1 or MENU2.

1. Enter program mode.

2. Press hidden enable pad.

3. Press MENU1 or MENU2. NOTE: Display will show current maximum time [LMT.

4. Enter new time LMT.

5. Press MENU1 or MENU2.

6. Close door or press reset pad.

• If a time higher than the max. time limit is entered, display will flash LMT and maximum time. Display will then reset to “0000”.

• LMT does not affect time entry operation.

PAUS (Pause) (All Models)

Used to stop microwave power halfway through the cooking cycle as a reminder to manipulate food.

Programming PAUS

1. Open oven door.

2. Press pad 1 for five seconds to enter programming mode.

3. Press the desired menu pad (exp: MENU1).

4. Press the desired number pad needing reprogrammed (exp: pad number 1) .

5. Press POWER LEVEL pad if power level other than 100% is desired. Enter desired power level. If 100% power is desired proceed to step 6.

6. Enter desired cook time.

7. Press Pause pad.

8. Press start.

9. Press reset pad or close oven door to exit programming mode.

Using PAUS Function

1. Open door, place food in oven.

2. Close oven door.

3. Press desired menu pad (exp: MENU1).

4. Press desired number pad (exp: pad number 1).

5. Oven starts. Display counts down.

6. Oven stops halfway through the cook cycle (oven displays P AUS and beeps 3 times).

RS2220001 Rev. 2 14

7. Open door and manipulate food.

8. Close door.

Page 15

Option Progams (All Models Except WDYRC)

1. Open oven door.

2. Press 1 pad for five seconds.

RC Models

Hidden Enable

QUANTITY

DELETE

PAUSEADD

STATUS

DQ & MC Models

ADD

DELETE

PAUSE

STATUS

Hidden Enable

3. Press hidden enable pad. NOTE: Display will indicate option code. Example:

OP:1 1

4. Press

5. Press

ST ART STATUS

pad to view active option codes.

pad to change option codes.

6. Repeat steps 4 and 5 to change additional options.

7. Press hidden enable pad to return to programming mode.

8. Press

RESET

pad or close oven door.

Option Description Code

End of cycle signal tone

Tone when pad is pressed

Control panel resets when door is opened

End of cycle signal volume

User time limit

Off OP:10 Continuous tone* OP:11 5 continous tones OP:12 5 tones, 5 cycles OP:13 Off OP:20 On* OP:21

Off* OP:30

On OP:31 Loud* OP:40 Medium OP:41 Off OP:50 On* OP:51

* AS SHIPPED FROM FACTORY

15 RS2220001 Rev. 2

Page 16

WDYRC Operating Instructions

PAUS (PAUSE)

Display

Many items in display can be seen but will not glow.

ITEM

ADD DEL

"EOC" (End of Cycle)

"POW ER " Lights when microwave power is supplied to oven cavity.

Pads Description

START

RESTART

Pad Time Power Lev el

1 BAG

PITA

2 BAG

PITA

1 DOZ

BUN

2 DOZ

BUN

STG QTY

2 3 4 P

LMT

MENU1 MENU2 MENU3 MENU4

Counts down heating time.

Lights at end of heating cycle. Remains in display until door is opened.

Begins heating cycle. If cycle is paused, new heating cycle begins.

If door is opened and heating is paused, resumes paused heating cycle.

25 sec. 100%

50 sec. 100%

30 sec. 100%

1 min. 100%

START

POWER

COOK

LEVEL

is pressed while heating

RESTART

pad

Connecting Power

When unit is plugged in or powered after the loss of electricity , it will take several seconds before dashes and menu indicator display . Once displayed, unit is operational.

Interrupting Operation

Open oven door to interrupt operation. Oven fan continues to operate. Close door and press

REST AR T

pad to resume oven operation.

Canceling Mistakes

If oven door is open and time shows in display , close oven door and press cycle or a

START

cycle is paused and not restarted, remaining time clears in 15 seconds. Oven door must be opened and closed before starting a new heating cycle.

RS2220001 Rev. 2 16

RESTAR T

pad to resume heating

to begin new heating cycle. If heating

Heating with Preprogrammed Pads

Oven has 4 preprogrammed pads.

1. Open oven door and place food in oven. Display shows “door”.

• Fan and light operate.

2. Close oven door. Display shows “MENU” and “ITEM”.

• If oven display does not show “ITEM”, pads do not

accept entries. Open and close oven door to activate pads.

3. Press desired a

• Heating time counts down.

• Display shows “POWER” when microwave energy

is present.

4. Oven stops and signal sounds when timing sequence is finished.

• Display shows "EOC".

5. Open oven door.

Wendy’s Recommended Performance Test

See “Owner’s Manual”.

ST AR T

pad and oven operates.

Page 17

Component Testing Procedures

WARNING

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

Illustration Component Test Results

Thermal Cutout B5684106

MT2

MT1 GA TE

B5795306 B5684118 Diode

Triac Disconnect wires to triac.

Capacitor

  

Disconnect all wires from TCO. Measure resistance across terminals. Magnetron TCO (.250 Cavity TCO Control TCO (.187 terminals)

Discharge Capacitors

Remove diode lead from capacitor and connect ohmmeter.

Reverse leads for second test.

Measure resistance from: MT1 to MT2 MT1 to Gate MT2 to Gate All terminals to ground

Discharge Capacitors



terminals)

Open at 280°F and closed at 180°F Opens at 262°F (128°C) Open at 280°F and closed at 180°F Infinite resistance should be measured in one direction and 50KΩ or more in the opposite direction.

NOTE: Analog meter must contain a battery of 6 volts minimum.

Caution - Do not operate oven with wire to terminal MT2 removed.

Infinite Ω Approximately 40 Ω or more Infinite Ω Infinite Ω

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

Also check between each terminal and capacitor case.

Snubber Assembly Disconnect wires to snubber.

Measure resistance across terminals.

Magnetron

Antenna motor Remove all wires from terminals.

Blower Motor Remove all wires from motor.

Discharge Capacitors

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

Measure resistance from: Terminal to terminal

Measure resistance across coil.

Between Terminals: Meter should momentarily deflect towards zero then return to over 5 MΩ. IF no deflection occurs, or if continuous deflection occurs, replace capacitor.

Terminal to Case: Infinite resistance

Infinite Ω

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

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

Approximately 10,000 Ω

Approximately 34 Ω

Lamp 240 VAC 40 Watts

Measure resistance

Approximately 120 Ω

RS2220001 Rev. 217

Page 18

Component Testing Procedures

WARNING

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

Illustration Component Test Results

COM

208

(Lo)

Com

Transformer

230

(Hi)

208 V

(Lo)

230 V

(Hi)

Discharge Capacitors

Remove all wires from terminals.

Measure resistance from:

Terminal 230 (HI) to Com Terminal 208 (LO) to Com Terminal 5 to 6 Terminal 4 to Ground screw on transformer Terminal 4 to any other terminal

Ω

65−80

Ω

Infinite resistance should be indicated, if not replace transformer.

208

For larger illustration

see page 33 in Disassembly Procedures

Auto Transformer

230

Interlock switch Type 1

Interlock switch Type 2

Interlock switch Type 3

230

208

Door Open

Dummy

Secondary

Logic/Primary

Monitor

Door closed

Discharge Capacitors

Remove all wires from terminals. Measure resistance from:

230 to 0 208 to 0

Disconnect wires to switch With door open measure resistance from:

Terminal 2 to terminal 3

Terminal 4 to terminal 5

Terminal 7 to terminal 8

3 4

4 5

With door closed measure resistance from:

Terminal 2 to terminal 3

Terminal 4 to terminal 5

Terminal 7 to terminal 8

Disconnect wires to switch With door open measure resistance from:

COM to N.O.Secondary COM to N.O.Primary COM to N.C.Monitor

With door closed measure resistance from: COM to N.O.Secondary COM to N.O.Primary COM to N.C.Monitor

Disconnect wires to switch. With door open measure resistance from:

Terminal 2 to 3 Secondary Terminal 4 to 5 Primary

Terminal 7 to 8 Monitor

With door closed measure resistance from: Terminal 2 to 3 Secondary

Terminal 4 to 5 Primary Terminal 7 to 8 Monitor

Ω

Infinite

Ω

Infinite

Ω

Indicates continuity

Indicates continuity Indicates continuity Infinite

Ω

Infinite Ω Infinite Ω Indicates continuity

Indicates continuity Indicates continuity Infinite Ω

Infinite Ω Infinite Ω Indicates continuity

Indicates continuity Indicates continuity Infinite Ω

RS2220001 Rev. 2 18

Page 19

Component Testing Procedures

WARNING

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

Illustration Component Test Results

12 354

White

Red

Yellow

Oran ge

Relay

High voltage board

J6 connections

1−White

2−Open

3−Red 4−Open 5−Yellow 6−Orange

Low voltage board J3 connector is for

side keypad ribbon.

J4 connector is for top keypad ribbon.

Extended memory board

MC and DQ only

Remove all wires from relay. Measure resistance: A to B (coil) 3 to 4 (contacts) With 12 VDC across the coil (A to B) Measure resistance: 3 to 4 (contacts)

Connector Plugged-In J2Pin 5 (violet) to ground J2Pin 6 J2Pin7 (blue) to ground

J6Pin 6 (orange) to Pin 1 (white)

J6Pin 5 (yellow) to Pin 1 (white)

J6Pin 1 (white) to Pin 3 (red) Connector Plugged-In J2Pin 5 (violet) to ground J2Pin 6 J2Pin7 (blue) to ground

J3 connector is for side keypad ribbon. J4 connector is for top keypad ribbon.

1) Unplug oven for 1 minute.

2) Close oven door.

3) Plug oven in.

Approximately 120 Infinite

Ω

27 VDC

−

Ω

Ground

18 VDC

230 voltsoutput to blower and antenna motors when line voltage is 230 V 208 voltsoutput to auto transformer for blower and antenna motors when line voltage is 208 V Line voltage

27 VDC

−

Ground

18 VDC

This dash must be lit (top segment of far right digit).

Wire Harness Test continuity of wires. Indicates continuity

RS2220001 Rev. 219

Page 20

Component Testing Procedures

WARNING

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

Top Keypad

To test keypad for proper Menu 3 S3 11 8 Time Entry S22 8 7 operation: Pause S13 10 5 Hold S27 7 6

1. Identify ribbon traces Delete S14 10 4 Enable S28 7 5 for selected keypad Status S15 10 3 Add S36 4 3 using chart. Menu 1 S16 9 8

2. Resistance between Menu 2 S17 9 7 selected traces = 0 ohms.

3. Pressing keypad, the right as facing resistance between the front of the unit. selected traces is less than 60 ohms.

Side Keyboard

To test keypad for proper the right as operation: facing the front

1. Identify ribbon traces of the unit. for selected keypad using chart.

2. Resistance between selected traces = 0 ohms.

3. Pressing keypad, Ribbon Cable resistance between selected traces is less than 60 ohms.

Keypad Switch

Menu 4/Quantity S1 11 10 Power Level S19 9 5

J4 - Place split in ribbon cable to

Keypad Switch

Stop/Reset S18 3 4 7 S39 6 10

0 S25 4 5 4 S40 7 8

Start S30 4 10 5 S42 7 10

8 S31 5 6 2 S43 8 9 9 S35 5 10 3 S44 8 10 6 S36 6 7 1 S45 9 10

J3 - Place split in

ribbon cable to

L.V. Board

All models except WDYRC

Ribbon

Trace

L.V. Board

Ribbon

Trace

Ribbon

Trace

Ribbon

Trace

Keypad Switch

Ribbon Cable

Keypad Switch

Ribbon

Trace

Ribbon

Trace

Split

Ribbon

Trace

Ribbon

Trace

Split

Top Keypad

To test keypad f or proper facing the front operation: of the unit.

1. Identify ribbon traces for selected keypad using chart.

2. Resistance between selected traces = 0 ohms.

3. Pressing keypad, resistance betw een selected traces is L.V. Board less than 40 ohms.

Side Keypad

To test keypad f or proper S6 6 7 operation: S7 6 10

1. Identify ribbon traces S8 5 6 for selected keypad S9 5 10 using chart. S10 4 5

2. Resistance between S11 4 10 selected traces = S12 3 4 0 ohms. L.V. Board

3. Pressing keypad, resistance betw een selected traces is less than 40 ohms.

J4 - Place split in

ribbon cable to

the right as T-1 10 4 T-2 8 7

Switch

Ribbon

Trace

Ribbon

Trace

T-1

Ribbon Cable

J3 - Place split in

ribbon cable to

the right as S1 9 10

facing the front S2 8 9

of the unit. S3 8 10

Ribbon

Switch

Trace

S4 7 8 S5 7 10

Ribbon

Trace

Ribbon Cable

WDYRC

Split

Switch

S-12

Ribbon

Trace

1 BAG PITA

2 BAG PITA

1 DOZ BUN

2 DOZ BUN

START

RESTART

Split

T-2

Ribbon

Trace

S-1 S-2 S-3 S-4 S-5 S-6 S-7 S-8 S-9 S-10 S-11

RS2220001 Rev. 2 20

Page 21

Display Diagnostics

CAUTION

All repairs as described in this troubleshooting guide section are to be performed only after the caution procedures one through seven listed below have been followed.

1. Check grounding before checking for trouble.

2. Be careful of the high voltage circuit.

3. Discharge high voltage capacitor .

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

5. Do not touch any parts of the circuitry on the P.C. Board circuit since static electric discharge may damage this control panel. Always touch yourself to ground while working on this panel to discharge any static charge in your body .

6. 208/230 V AC is present in the high voltage circuit board, terminals of power relay and primary circuit of low voltage transformer.

7. When troubleshooting, be cautious of possible electrical hazard.

Service Codes

During operation, the display may show the following service codes: NOTE: 1. Always unplug the oven for one minute. Replug oven in and check for error codes.

2. Check oven for proper operation.

ecivreSecivreS

ecivreS

sedoC

1S1S1S1S1SlenaPhcuoTenarbmeM-godhctaW

SCSCSCSCSC esneStnerruC

LFLFLFLFLFtnerruCwoL

HFHFHFHFHFtnerruChgiH

LPLPLPLPLPlevelrewoP

1ECP1ECP

1ECP1ECPyromeMtnenamrePkcehC-muskcehC

1ECP 5ECP5ECP

5ECP5ECPeruliaFnoitacinummoC

5ECP 6ECP6ECP

6ECP6ECPeruliaFnoitacinummoC

6ECP

noitanalpxEnoitanalpxE

noitanalpxE

TOHTOH

TOHTOHgnitaehrevOnortengaM

TOH

IHIHIHIHIHegatloVeniLhgiH

OLOLOLOLOLegatloVeniLwoL

21 RS2220001 Rev. 2

Page 22

Display Diagnostics

S1 Watchdog - Membrane Touch Panel

Watchdog circuit verifies touch panel entry.

Possible Causes:

1. Shorted top touch panel.

2. Shorted side touch panel.

Testing

1. Disconnect power from oven.

2. Disconnect one touch panel ribbon cable from the L.V. circuit board.

3. Plug oven in, open and close door to activate oven.

4. Wait approximately 60 seconds. If "S1" does not appear in display , replace the disconnected touch panel.

5. If "S1" re-appears in display, disconnect the other touch panel and repeat steps 3 and 4.

HOT Magnetron Overheating

CS Current Sense

Current Sense – Indicates control is sensing low current (Amp) draw. Check components which would allow unit to run but produce no heat or low heat. Current sense circuit is active only when using pre-programmed pads. Time Entry feature will by-pass current sense circuit. Red wire from cavity T.C.O. must be routed through current sense loop on H.V. Board.

Possible Causes:

1. Interlock switch (contacts 2 & 3).

2. Open thermal cut-out (magnetron).

3. Open/loose wire.

4. Power relay.

5. H.V. Board.

6. Magnetron.

7. Diode.

8. Capacitor.

9. T ransformer.

10.Triac.

When "HOT" is displayed, the blower motor should be operating.

Possible Causes:

1. Restricted air filter.

2. High ambient temperature.

3. Oven operated empty or with light loads.

4. Open control TCO.

5. Inoperative blower motor / wheel.

6. Open/loose TCO ground wire.

7. Open/loose E1 ground wire at H.V. board.

8. Inoperative high voltage board.

Red Wire

to Cavity TCO

Current

Sense

Loop

High Voltage Board

RS2220001 Rev. 2 22

Page 23

Display Diagnostics

PCE1 Checksum

NOTE: Before scheduling service for this complaint,

instruct customer to unplug oven for one minute, reconnect, and retest. If unit operates properly, no further service is required.

If this error code does not disappear possible causes are:

1. Inoperative low voltage board.

PCE5 Communication Failure

NOTE: Before scheduling service for this complaint,

instruct customer to unplug oven for one minute, reconnect, and retest. If unit operates properly, no further service is required.

If this error code does not disappear possible causes are:

1. Broken or improper wire connection between high voltage board and low voltage board.

2. Inoperative cable between low voltage board and extended memory board.

3. Inoperative high voltage board.

4. Inoperative low voltage board.

5. Inoperative extended memory board.

PCE6 Communication Failure

NOTE: Before scheduling service for this complaint,

instruct customer to unplug oven for one minute, reconnect, and retest. If unit operates properly , no further service is required.

If this error code does not disappear possible causes are:

1. Broken or improper wire connection between high voltage board and low voltage board.

2. Inoperative cable between low voltage board and extended memory board.

3. Inoperative high voltage board.

4. Inoperative low voltage board.

5. Inoperative extended memory board.

HI High Line Voltage

1. Input voltage over 270 VAC.

2. Inoperative high voltage board.

LO Low Line Voltage

1. Input voltage less than 185 VAC.

2. Inoperative low voltage board.

23 RS2220001 Rev. 2

Page 24

Service Test – All Models Except WDYRC

For WDYRC service test information, refer to RT2230008 Technical Sheet

The high voltage portion of these models contain multiple H.V . systems.

Each H.V . System contains the following:

• 1 Magnetron

• 1 H.V. Transformer

• 1 Capacitor

• 1 Diode

• 1 Triac

• Connecting wiring Each H.V . system may be operated independently for

diagnostic purposes. During this test the display will show a number (usually

between 8 and 24 for each H.V . system operating) signifying some current draw of the unit.

This is

not

showing actual amperage, but a current

reference.

Accessing Service T est Mode

1. Open door and place 1000 ml water load in oven.

NOTE: Perform the following 4 steps within

15 seconds or this procedure will be cancelled.

2. Press

3. Press

4. Close door.

5. Press NOTE: Pressing

DELETE, 1, 3, 5, 7

DELETE

RESET

at any time will cause the

control to exit the Service Test.

Indicates Power Relays

Current

reference

Indicates Voltage

is Greater than

218 VAC

are closed for the

Service Mode Test

Initial Display in Service T est Mode

H.V. System Test

When Service Test Mode has been accessed, the H.V. system test must be started within 60 seconds to assure accurate test readings. The door must be

closed.

1. Press pad 1 to activate H.V . System # 1.

• The triac drive will be activated after a minimum of 100 milliseconds.

• A 62 seconds full power cook cycle will begin for the selected H.V . system.

Amount of Time

Current

reference

H.V. System 1

H.V. System 2

H.V. System Will Operate

POWER

H.V. System 3

Display with H.V. System # 1 Activated

2. Press pad 1 again to de-activate H.V . System # 1.

3. Press pad 2 to activate H.V . System # 2.

4. Press pad 2 again to de-activate H.V . System # 2.

5. Press pad 3 to activate H.V . System # 3.

6. Press pad 3 again to de-activate H.V . System # 3.

Diagnosing Individual H.V. System Components

If the service test indicates a non-functional H.V. system, proceed as follows:

1. Identify the number of the H.V. system that is not functioning and the corresponding magnetron location. MENU 1 = Bottom magnetron MENU 2 = Top rear magnetron MENU 3 = Top front magnetron

NOTE: Component numbering in the wiring / schematic

diagrams may not match the numbering of MENU 1, MENU 2 or MENU 3 display indicators.

2. Using the wiring diagram, identify the location of components numbered the same as the nonfunctioning magnetron. H.V . components with the same number are part of the same H.V. system.

RS2220001 Rev. 2 24

Page 25

Service Test

Multiple H.V . System Testing

Two or three H.V. Systems may be tested together. Below are display samples showing different combinations.

NOTE: This is

not

showing actual amperage, but a

current reference.

Example: If one H.V. System is showing a current

reading of 15, then any two H.V . Systems may have a reading of about 30, and all three H.V. Systems may have a reading of about

45. Current reference readings will vary .

MENU1 MENU2

H.V. System 1 & 2

MENU1 MENU3

H.V. System 1 & 3

Door Cycles and Magnetron Hours

• Press

NOTE: Door cycle counter advances one number for

Door Cycles

TIME ENTRY

pad once for door cycles.

every 100 door cycles.

Example:

Display reads 156 x 100 = 15,600 (Actual door cycles)

• Press

TIME ENTRY

pad again for H.V. section

# 1 hours.

• Press

TIME ENTRY

pad again for H.V. section

# 2 hours.

• Press

TIME ENTRY

pad again for H.V. section

# 3 hours.

• Press

TIME ENTRY

pad again reverts to door

cycles.

Number of

Door Cycles

MENU1 MENU2 MENU3

H.V. System 1 , 2, & 3

Display

Magnetron Hours

Magnetron

Hours

Indicates Operating

H.V. System

Display

25 RS2220001 Rev. 2

Page 26

Power Test (Traditional 1 Liter Test)

Test equipment required is Amana power test kit R0157397 (Fahrenheit), or Menumaster power test kit M95D5 (Celsius).

1. Fill the plastic container to the bottom of the 1000 ml. line with cool tap water.

2. Using the thermometer; Fahrenheit or Celsius, stir the water, measure and record the water temperature.

Initial water temperature should be approximately 60°F (20°C).

3. Place container on the center of the oven shelf and heat the water for 33 seconds for units more than 1550 Watts cooking power or 63 seconds for units less than 1550 Watts cooking power.

NOTE: Use a watch second hand, not the oven timer.

4. Stir the water, measure and record the temperature of the water after heating time is complete.

5. Subtract the starting water temperature (Step 2), from the ending water temperature (Step 4) to obtain the temperature rise.

6. See the Temperature Chart provided below.

NOTE: Always perform power test three times for accuracy, changing the water after each test is performed. NOTE: Variation or errors in the test procedure will cause a variance in the temperature rise indication. Additional

power tests should be made if temperature rise appears marginal.

NOTE: Low line voltage may cause lower power output (temperature rise).

Temperature Chart

THIRTY THREE SECONDS run time chart for units more than 1550 watts cooking power .

∆∆

∆T Cooking

∆∆

(°F) Power Output (°F) Power Output

20 1550 28 2170 21 1627 29 2247 22 1705 30 2325 23 1782 31 2402 24 1860 32 2480 25 1937 33 2557 26 2015 34 2635 27 2092 35 2712

SIXTY-THREE SECONDS run time chart for units less than 1550 watts cooking power.

∆∆

∆T Cooking

∆∆

(°F) Power Output (°F) Power Output

12 464 20 775 13 504 21 814 14 542 22 852 15 581 23 891 16 620 24 930 17 659 25 969 18 697 26 1007 19 736

∆∆

∆T Cooking

∆∆

∆T Cooking

∆∆

∆T Cooking

∆∆

(°C) Power Output (°C) Power Output

11 1540 15.5 2170

11.5 1610 16 2240 12 1680 16.5 2310

12.5 1750 17 2380 13 1820 17.5 2450

13.5 1890 18 2520 14 1960 18.5 2590

14.5 2030 19 2660 15 2100 19.5 2730

∆∆

∆T Cooking

∆∆

(°C) Power Output (°C) Power Output

7 490 11 770 8 560 12 840 9 630 13 910 10 700 14 980

∆∆

∆T Cooking

∆∆

∆T Cooking

∆∆

RS2220001 Rev. 2 26

Page 27

T roubleshooting

Initial Power Up

Connect Power Cord (Door Closed)

5 to 10 Seconds

No power applied to oven power cord.

1. Blown oven fuse (check interlock switch

2. module operation, monitor test). Inoperative cavity thermal cut out.

3. Inoperative low voltage circuit board.

4. Inoperative high voltage circuit board.

5. Broken or improper wire connections.

5 to 10 Seconds

Yes

Error Code Appears?

Proceed to "Stand-By" Condition

Yes

Ovens with Extended Memory Board.

Inoperative interlock switch module,

1. contacts 4 & 5. Inoperative high voltage circuit board.

2. Inoperative extended memory board.

3. Broken or improper wire connections.

Ovens without Extended Memory Board.

Refer to Display Diagnostics page 21.

27 RS2220001 Rev. 2

Page 28

T roubleshooting

Stand By Condition

Open oven door.

Yes

Oven light is on? (optional)

Yes

Antenna motors operate?

Yes

Blower motor operates?

Yes

"Stand by Condition" normal - proceed to "Cook Condition".

Inoperative autotransformer.

1. Binding or inoperative antenna motor(s).

2. Binding or inoperative blower motor.

3. Broken or improper wire connections.

RS2220001 Rev. 2 28

Page 29

T roubleshooting

Cook Condition

Place a cup of water in oven and close door.

Flashing

"ITEM"

Note: or the door has to be opened and closed to reactivate a cook condition.

must be flashing

Push pad number 1, pad beeps when pushed.

Display starts counting down?

Note: There will be a 2 to 3 second delay before dis pl ay begins counting down.

Error code appears after about 8 seconds?

Yes

Inoperative interlock switch module. Broken or improper wire connections.

Beep not programmed into oven.

Inoperative touch panel.

Pad not pro

Door not completely latched.

Inoperative low voltage board.

Inoperative interlock switch module.

Broken or improper wire connection.

Refer to Dis play Diagnostics.

rammed.

Open oven door.

Water placed in oven is properly heated?

Yes

Oven is operating properly.

Heats ver y slowly.

NOTE : Verify by performing power test (page 26).

Inoperative hi Inoperative diode(s).

2. Inoperative capacitor(s).

3. Inoperative ma

Inoperative or misadjusted interlock switch module. Inoperative triac(s).

Inoperative ma

Broken or improper wire connection.

h voltage transfo rmer(s).

netron(s).

netron thermal cutout.

No heat.

Inoperative or misadjusted interlock switch module.

Inoperative ma Inoperative capacitors.

3. Inoperative hi

Inoperative hi

Broken or improper wire co nnections.

netron thermal cutouts.

h voltage board. h voltage transformers.

29 RS2220001 Rev. 2

Page 30

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Latch Handle

The latch handle is removed by loosening the two set screws (3/32 inch allen screws), one located to the left of the latch and one located on the bottom of the latch handle.

NOTE: If the set screws are removed, the set screw

with the flat end must be used in the bottom of the latch handle.

NOTE: When replacing door handle, tighten side set

screw first.

Door

1. Remove latch handle.

2. Remove outer door ring assembly from inner door ring by removing 10 y-drive screws.

Inner Door Ring Assembly

1. Remove latch handle.

2. Remove outer door assembly.

3. Remove 5 hinge screws securing inner door ring assembly .

Inner Door Ring Assembly

The door ring assembly consists of the inner door ring, the inner door panel, and latch assembly. These components are available only as a complete assembly.

NOTE: When reinstalling outer door, tighten screws in

pattern as shown above.

Outer Door

Outer Door Assembly

The outer door assembly consists of the outer door, outer window, and lens retainer . These components are available only as a complete assembly .

RS2220001 Rev. 2 30

Hinge

1. Remove outer case.

2. Remove door latch handle.

3. Remove outer door assembly.

4. Remove nine hinge mounting screws from hinge (five on front, 4 on side).

NOTE: Reinstall foam gasket on side of hinge when

reinstalling.

5. When reinstalling hinge mounting screws, keep the side screws loose and the front screws tight, close door, press door against oven on the hinge side and tighten side hinge mounting screws in the sequence shown below.

3 2 4 1

Page 31

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Bottom Shelf

NOTE: The tray is sealed in place with Silicone Rubber.

This type of sealant releases acetic acid and needs curing. The unit should not be used for minimum of one hour after application.

1. Unplug oven from outlet.

2. Open door and using a thin bladed knife, cut seal along edges and remove pieces from unit.

3. Remove any sealant residue and thoroughly clean sump area using a mild detergent.

4. Clean oven cavity bottom where new RTV sealant will make contact using mineral spirits or any nonflammable de-greasing solvent.

NOTE: Detergents, soap, and water are not suf ficient to

remove oil and grease.

5. Place new tray into unit and seal in place.

6. Allow RTV sealant to cure one hour before using.

Grease Shield

1. Unplug oven before removing grease shield to stop antenna from rotating.

2. Remove shield by placing thumbs in front of shield. Press firmly toward back and carefully lower front of shield away from antenna. Pull shield forward, out of back slots and out of oven.

3. Replace grease shield by fitting tabs into slots at top of oven back. Lift and press front of shield until shield snaps into place.

T op Keypad Assembly

1. Remove outer case.

2. Remove ribbon cable from low voltage circuit board.

3. Remove screws and lift out.

Split

Ribbon

Cable

End

Connector -Side Keypad

Spl it in ribbon cable to the right as facing the front of the unit.

L.V. Board

Outer Case

1. Remove screws in side and back.

2. Slide outer case back and lift off.

Connector - Top Keypad

Spl it in ribbon cable to the right as facing the front of the unit.

Side Keypad

1. Remove outer case.

2. Remove ribbon cable from low voltage circuit board.

3. Remove low voltage circuit board.

4. Loosen outer case trim.

5. Remove mounting screw(s).

6. Tilt side touch panel away from oven, release bottom mounting tabs (some models), and remove panel.

Low Voltage Circuit Board

1. Remove outer case.

2. Disconnect ribbon cables.

3. Disconnect connector from back of circuit board.

4. Squeeze clips together to depress the four standoffs and lift board out.

31 RS2220001 Rev. 2

Page 32

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

T op Antennas

1. Remove outer case.

2. Remove grease shield.

3. While holding antenna, remove wire securing antenna to gear at top of unit.

4. Remove antenna.

5. Remove gear.

ArrowArrow

Dot Dot

NOTE: Gears are aligned by aligning the arrows to the

dots.

Cotter

ntenna

Motor

Antenna

Gear

Nylon

Washer

Rivet

Antenna Matching

Antenna

Motor

Rivet

Standard Antenna

Early Production

Antenna

Motor

Rivet

Standard Antenna

Later Production

Antenna

NOTE: Nylon washers must be installed below gears.

When servicing the top antennas, give careful

1. Remove outer case.

2. Remove three antenna gears.

3. Disconnect motor wiring.

4. Remove three stirrer motor bracket mounting rivets. The motor and bracket are replaced as one part.

NOTE: Gears are aligned by aligning the arrows to the

dots on gears.

RS2220001 Rev. 2 32

Top Antenna Motor

attention to the color of the antenna tip. Part # 10787601 is standard non-colored. Part # 10787602 is blue-tipped. These antennas are not interchangable. Refer to Parts Manual for correct application.

WA RN IN G

Blue-Tipped Antenna

Page 33

Disassembly

WA R N IN G

Interlock Switch Assembly

1. Remove outer case.

2. Disconnect wiring.

3. Remove mounting screws securing mounting bracket to oven cavity and remove switch assembly from oven.

4. Re-connect wires to switch and check operation of monitor circuit before operating the oven.

NOTE: When the line fuse is open on models RC27 and

KFC1, the interlock switches and the power

relay must be replaced.

Type 1

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Type 3

Top Rear Magnetron

1. Removing outer case.

2. Remove top right air baf fle by removing mounting screw.

3. Remove wires from thermal protectors and magnetron.

4. Remove center air baffle by removing two mounting screws located in top of the oven, do not attempt to remove air baffle at this time.

5. Remove four magnetron mounting nuts.

6. Remove magnetron and center air baf fle.

7. When replacing the magnetron, verify the wire mesh gasket is reinstalled.

NOTE: When reinstalling magnetron, slide left air baffle

on magnetron before placing magnetron in place.

Type 2

Adjustment

1. To adjust interlock switch assembly, close door.

2. Loosen bottom screw on the interlock switch assembly , allowing the switch assembly to move in or out.

3. With door closed, push forward on interlock assembly to engage door latch. Then pull back on interlock assembly until door is "snug" against front oven cavity and tighten bottom screw.

4. The door will remain latched when proper adjustment is made.

T op Front Magnetron

1. Remove outer case.

2. Disconnect wire to thermal protectors and magnetron.

3. Remove low voltage circuit board.

4. Remove two left air baffle mounting screws (do not attempt to remove air baffle at this time).

5. Remove four magnetron mounting screws.

6. Remove left air baffle and magnetron.

7. When replacing the magnetron, verify the wire mesh gasket is reinstalled.

NOTE: Be sure to slide left air baffle on magnetron

before reinstalling the magnetron.

33 RS2220001 Rev. 2

Page 34

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Bottom Magnetron

1. Remove outer case.

2. Disconnect wires from the magnetron thermal protectors and the magnetron.

3. Remove bottom magnetron air duct.

4. Remove middle baf fle mounting screw and slide air baffle out of the way.

5. Place unit on its left side.

6. Remove bottom access panel.

7. Remove four magnetron mounting nuts.

8. Remove magnetron.

Installation

1. Install magnetron - do not tighten nuts.

2. Install magnetron air baf fle.

3. T ighten magnetron mounting nuts.

4. Reinstall middle air baf fle.

5. Install bottom access cover.

6. Connect wiring to magnetron and magnetron thermal protectors.

7. When replacing the magnetron, verify the wire mesh gasket is reinstalled.

8. Install outer case.

Bottom Stirrer Motor

1. Remove bottom access panel.

2. Remove antenna gear.

3. Disconnect brown motor wires from white and orange chassis wires.

4. Remove two mounting rivets and remove motor.

NOTE: Do not remove bottom antenna gear when

removing motor.

Dot

Arro

NOTE: Gears are aligned by aligning the arrows to the

dots on gears.

Magnetron and Control Thermal Protectors (TCO)

1. Remove outer case.

2. Remove wiring from selected thermal protector.

3. Remove 1/8" allen screw/phillips screw used to mount thermal protectors.

Bottom Access Panel

1. Place oven on side or back.

2. Remove single bottom screw.

ntenna

Motor

Nylon

Washer

Antenna

Cotter

Gear

RS2220001 Rev. 2 34

NOTE: Nylon washers must be installed between

antenna gears and cavity .

Page 35

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Bottom Antenna

1. Remove shelf.

2. Set oven on side.

3. Remove bottom access panel.

4. Removal antenna gear . NOTE: Gears are aligned by aligning the arrows to the

dots on gears.

5. Remove antenna from top.

6. Replace and reseal shelf.

Back Panel

1. Remove outer case.

2. Remove six panel mounting screws.

Blower Wheel and Motor

1. Remove outer case.

2. Remove back panel.

3. Remove auto transformer.

4. Remove wiring to blower motor.

5. Remove the one blower assembly mounting screw located under the support brace and remove assembly .

6. Remove three mounting screws located under blower housing assembly .

7. Remove assembly from oven.

8. Loosen the 1/8 inch allen set screw securing blower wheel to shaft.

9. Remove three blower mounting housing screws.

10.Remove blower wheel.

11.Remove four motor mounting bolts.

12.When reinstalling blower wheel, push blower wheel on shaft and rotate to insure clearance between blower wheel, blower housing, and mounting bolts.

Fan

Blade

Blower

Motor

Blower Wheel

Following are Accessible by Removing Back Panel

• Oven relay

• Blower (see additional instructions)

• Diodes

• Capacitors

• Top for top front magnetron

• Middle for top rear magnetron

• Bottom for bottom magnetron

• H.V. transformers (two mounting screws on back flange and slide transformer out.

• Right for top front magnetron

• Middle for top rear magnetron

• Left for bottom magnetron

• Triacs

• Back for top front magnetron

• Middle for top rear magnetron

• Front for bottom magnetron

• Autotransformer

• H.V. circuit board

• Fuses

Blower Wheel

Set Screw

Support

Brace

Triac #1

(Bottom Magnetron)

Blower

Housing

Triac #3

(Top Front Magnetron)

On 3 Tube Ovens Only

Triac #2

(Top Rear Magnetron)

Blower Assembly

Blower

Motor

Blower

Housing

35 RS2220001 Rev. 2

Page 36

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Fan Blade

1. Remove top mounting clip from end of shaft.

2. Pull blade of f shaft.

3. When reinstalling blade, push blade on shaft and rotate to insure clearance between fan blade and motor mounting bolt.

H.V. Board

1. Unplug connectors.

2. Disconnect wires from terminals E1, E2, and E3.

3. Disconnect sense loop wire from cavity thermal protector.

NOTE: Be sure to route wire through sensing loop when

replacing high voltage board.

Red Wire

to Cavity TCO

Current

Sense

Loop

Power Cord

1. Remove outer case assembly.

2. Disconnect wiring.

3. Remove strain relief by compressing with pliers.

4. Remove power cord.

Component Location

Antenna Gear

Antenna Motor (Under Bracket)

Cavity Light Cover

Extended Memory Board

Antenna Gear

Wave Guide

Low Voltage Circuit Board

High Voltage Board

Mounting

Clips

High Voltage Board

4. Disconnect seven mounting clips, by pushing clips away from the board.

Cavity Thermal Protector (TCO)

1. Removing inner side panel by removing four mounting screws.

2. Remove thermal protector mounting screw (protective covering inside of cavity must be held).

3. Disconnect wiring.

Three Magnetron Model - Top View

Antenna Gear

Antenna Motor (Under Bracket)

Cavity Light Cover

Extended Memory Board

Wave Guide

Low Voltage Circuit Board

Two Magnetron Model - Top View

RS2220001 Rev. 2 36

Page 37

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Left Air Baffle

Top Front Magnetron

Interlock Switch Assembly

Bottom Air Du ct

Center Left Air Baffle

Bottom Magnetron

Magnetron TCO

Middle Baffle

Magnetron TCO

Top Rear Magnetron

Control TCO

Center Right Air Baffle

Three Magnetron Model - Side View

Top Right Air Baffle

Three Magnetron Models - Rear View

Center

Interlock Switch Assembly

Bottom Air Duct

Left Air Baffle

Bottom Magnetron

Magnetron TCO

Middle Baffle

Top Rear Magnetron

Control TCO

Center Right Air Baffle

Two Magnetron Model - Side V iew

Top Right Air Baffle

Two Magnetron Models - Rear View

37 RS2220001 Rev. 2

Page 38

Disassembly

WA R N IN G

To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.

Antenna Gear

Antenna Motor (Under Bracket)

Wave Guide

Bottom View

Alternate Diode Location

RS2220001 Rev. 2 38

Page 39

Wiring Diagrams and Schematics

WARNING

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

RC22 P1107909M RC22MP P1107902M RC22MPS P1107906M

RS2220001 Rev. 339

Page 40

Wiring Diagrams and Schematics

WARNING

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

RC22 P1107909M RC22MP P1107902M RC22MPS P1107906M

RS2220001 Rev. 3 40

Page 41

Wiring Diagrams and Schematics

WARNING

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

DQ22HS P1107908M MC22MP P1107904M

RS2220001 Rev. 341

Page 42

Wiring Diagrams and Schematics

WARNING

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

DQ22HS P1107908M MC22MP P1107904M

RS2220001 Rev. 3 42

Page 43

Wiring Diagrams and Schematics

WARNING

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

RC16MP P1191101M RC17 P1191104M

RS2220001 Rev. 343

Page 44

Wiring Diagrams and Schematics

WARNING

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

RC16MP P1191101M RC17 P1191104M

RS2220001 Rev. 3 44

Page 45

Wiring Diagrams and Schematics

WARNING

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

RC22 P1198604M RC22S P1198605M RC22LW P1198610M RC22LW P1198611M

RS2220001 Rev. 345

Page 46

Wiring Diagrams and Schematics

WARNING

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

RC22 P1198604M RC22S P1198605M RC22LW P1198610M RC22LW P1198611M

RS2220001 Rev. 3 46

Page 47

Wiring Diagrams and Schematics

WARNING

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

RC17 P1198601M RC20A P1191103M

RS2220001 Rev. 347

Page 48

Wiring Diagrams and Schematics

WARNING

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

RC17 P1198601M RC20A P1191103M

RS2220001 Rev. 3 48

Page 49

Wiring Diagrams and Schematics

WARNING

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

DQ22HS P1198607M MC22MP P1198701M MC22MPT P1198702M

RS2220001 Rev. 349

Page 50

Wiring Diagrams and Schematics

WARNING

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

DQ22HS P1198607M MC22MP P1198701M MC22MPT P1198702M

RS2220001 Rev. 3 50

Page 51

Wiring Diagrams and Schematics

WARNING

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

RC27 P1198608M

RS2220001 Rev. 351

Page 52

Wiring Diagrams and Schematics

WARNING

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

RC27 P1198608M

RS2220001 Rev. 3 52

Page 53

Wiring Diagrams and Schematics

WARNING

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

RC17 P1198612M RC17SD P1198623M

RS2220001 Rev. 353

Page 54

Wiring Diagrams and Schematics

WARNING

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

RC17 P1198612M RC17SD P1198623M

RS2220001 Rev. 3 54

Page 55

Wiring Diagrams and Schematics

WARNING

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

RC22 P1198614M DQ22HS P1198617M MC22MP P1198703M MC22MPT P1198704M MC22MPT2 P1198705M RC27 P1198618M KFC1 P1198622M

RS2220001 Rev. 355

Page 56

Wiring Diagrams and Schematics

WARNING

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

RC22 P1198614M DQ22HS P1198617M MC22MP P1198703M MC22MPT P1198704M MC22MPT2 P1198705M RC27 P1198618M KFC1 P1198622M

RS2220001 Rev. 3 56

Page 57

Wiring Diagrams and Schematics

WARNING

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

12451002

WDYRC P1198621M

RS2220001 Rev. 357

Page 58

Wiring Diagrams and Schematics

WARNING

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

12451002

DANGER

HIGH VOLTAGE

WDYRC P1198621M

RS2220001 Rev. 3 58

Page 59

Wiring Diagrams and Schematics

WARNING

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

12495902

DANGER

HIGH VOLTAGE

MC22MP P1198706M MC22MPT P1198707M MC22MPT2 P1198708M

RS2220001 Rev. 359

Page 60

Wiring Diagrams and Schematics

WARNING

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

L1 L2

FUSE

TCO

(OVEN )

(SECONDARY)

SELF-

RESETTING

TCO (TOP

FRONT MAG)

COM

CAPACITOR

RESISTOR

LINE FILTER

INTERLOCK

SWITCH

CURRENT SENSING

COIL

EXTENDED MEMORY BOARD

TRIAC

(BOTTO M

MAG)

SNUBBER

SELF-

TCO

SCHEMATIC CONDITION: DOOR OPEN

INTERLOCK

SWITCH

SCHEMATIC

DOOR CLOSED

HI VOLT BOARD

LO VOLT BOAR D

COM

CAPACITOR

RESISTOR

RECTIFIER

987654321

220

GND

220

(MAG 2 )

SELF-

RESETTING

CONTROL

TCOS

(MAG 1 )

J6-3

(MAG 3 )

J1-7

J1-6

56 56 56

J1-1

HI VOLT BOARD

INTERLOCK SWIT CH

J4-5

J5-4J5-1J5-2

J5-3

J4-6

230

POWER

X'FMR

(TOP FRONT

MAG)

230V 50Hz 3-WIRE

BLOWER MOTOR

ANTENNA MOTOR

(TOP)

ANTENNA MOTOR

(BOTTO M)

AUTO TRANSFOR MER

240 220

J6-5J6-6

(MONITOR)

TRIAC

(TOP

FRONT

MAG)

SNUBBER

SELF-

RESETTING

TCO (TOP

REAR MAG)

FUSEFUSE FUSE

COM

CAPACITOR

RESISTOR

J6-1

HI VOLT BOARD

J4-3

J4-4

220

COM

EMI

SUPPRESSOR

INTERLOCK

SWITCH

(PRIMAR Y)

TRIAC

(TOP REAR MAG)

SNUBBER

230

J4-1

J4-2

POWER

X'FMR

(TOP REAR

MAG)

SHIELD

RESETTING (BOT MAG )

POWER X'FMR

(BOTTO M

MAG)

13121110987654321

J3-3J3-2

230

MAGNETRON 1

(TOP FRONT)

RECTIFIER

MAGNETRON 2

(TOP REAR)

RECTIFIER

MAGNETRON 3

(BOTTO M)

DANGER HIGH VOLTAGE

12495902

DANGER

HIGH VOLTAGE

MC22MP P1198706M MC22MPT P1198707M MC22MPT2 P1198708M

RS2220001 Rev. 3 60

Amana Menumaster RC22MPS Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual