Maytag LD10D2 Service Manual Download Page 26 | Manualshive

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Wiring Diagram and Schematic

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

WARNING

!

26

16023053 Rev. 0

©2004 Maytag Appliances Company

LD10D2

Timer
Switch

Interlock
Switch
(Primary)

Magnetron
TCO

Oven
TCO

Fan Motor

Stirrer Motor

Oven Light

Timer Motor

Monitor
Switch

Power Transformer

Interlock
Switch
(Secondary)

Choke
Filter

Magnetron

Rectifier

Capacitor

Noise
Filter

120 VAC
60 Hz

Primary

Secondary

Monitor

C

NO

NC

C

C

NO

Interlock
Switch
Schematic

Door open

Schematic
Condition:
Door Open

Fuse 20 Amp

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Summary of Contents for LD10D2

Page 1: ...ing Service This manual is to be used by qualified appliance technicians only Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person 16023053 Revision 0 April 2004 LD10D2 P1329702M LD10MP P1329703M LD10MPS P1329708M This service manual replaces 16022123 ...

Page 2: ...IBLITY TO REVIEW ALL APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS WARNING To avoid risk of severe personal injury or death disconnect power before working servicing on appliance to avoid electrical shock To locate an authorized servicer please consult your telephone book or the dealer from whom you purchased this product For further assistance please contact Commercial Support Center C...

Page 3: ...ed 19 Measurement With a Fully Assembled Oven 19 Record Keeping and Notification After Measurement 19 Disassembly Procedures Disconnecting Wire Terminals 20 Outer Case 20 Door Assembly 20 Door Disassembly 21 Control Panel 21 Controller Removal Electronic Models 22 Key Pad Removal 22 Timer Removal Dial Models 22 Interlock Switches 23 High Voltage Capacitor 23 Diode 24 Transformer 24 Fuse Block Filt...

Page 4: ... servicer is to cease repair and contact the Maytag Service Department immediately for further direction Maytag Manufacturing will contact the proper Government Agency upon verification of the test results 1 Always operate the unit from an adequately grounded outlet Do not operate on a two wire extension cord 2 Before servicing the unit if unit is operable perform the microwave leakage test 3 The ...

Page 5: ...d ONLY by qualified service personnel Special tools are required to service equipment Contact nearest authorized service facility for examination repair or adjustment 10 DO NOT cover or block filter or other openings on equipment 11 DO NOT store this equipment outdoors DO NOT use this product near water for example near a kitchen sink in a wet basement or near a swimming pool and the like 12 DO NO...

Page 6: ...erials that are not intended for cooking 11 When cooking with paper plastic or other combustible materials follow manufacturer s recommendations on product use 12 Do not use paper towels which contain nylon or other synthetic fibers Heated synthetics could melt and cause paper to ignite 13 Do not heat sealed containers or plastic bags in oven Food or liquid could expand quickly and cause container...

Page 7: ...ructions 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 e...

Page 8: ...utral dead with respect to ground Hot H This slot is the smaller size and should always be hot live with respect to neutral N and ground G Ground G The round hole connection is for the grounding circuit Behind the cover plate a green wire should be connected to this terminal G N H Explanation Polarization This means that the larger slot must be neutral and the small slot must be hot live Mispolari...

Page 9: ...r equipment Reduce or eliminate interference by doing the following Clean the door and sealing surfaces of microwave oven according to instructions in Care and Cleaning section Place radio television ect as far as possible from the microwave oven Use a properly installed antenna on radio television ect to obtain stronger signal reception Model Identification Complete registration card and promptly...

Page 10: ...le Unit 15 A Frequency 60 Hz Single phase 3 wire ground Yes Receptacle 5 15 R Plug 5 15 P Power cord 5 ft 1 5 m Power Output Normal microwave energy IEC705 1000 Watts Operating Frequency 2450 MHz Power Consumption Cook condition microwave 1450 Watts Cabinet Width 20 9 16 in 53 0 cm Height 12 3 8 in 31 5 cm Depth 15 1 2 in 39 4 cm Oven Interior Width 13 7 8 in 34 4 cm Height 9 5 32 in 23 3 cm Depth...

Page 11: ...on this panel to discharge any static charge built up in your body Condition Cause Remedy Microwave oven does not work Inserting multiple plugs into one outlet and using them at the same time blown fuse or breaker Avoid using other electrical appliances when you use the microwave oven Microwave oven plug is not inserted tightly Insert microwave oven plug securely Output power is too low Low AC inp...

Page 12: ...ng operation 8 Display obviously jumps in time while counting down 9 Display counts down too fast while cooking 10 Each indicator light does not turn on after setting cooking cycle 11 Display time of day does not reappear when cooking is finshed Condition Check Result Cause Remedy No input can be programmed Check the connection between keypad and controller Continuity Failed controller Replace con...

Page 13: ...tch with door opened Continuity No Continuity Malfunction of secondary switch Replace the fuse primary secondary monitor switches and controller Disconnect one side of the wire lead connecting transformer to high voltage capacitor and operate the unit Normal Fuse blows again Failed high voltage capacitor Failed high voltage transformer Replace high voltage capacitor Replace high voltage transforme...

Page 14: ...om relay RY2 and verify on and off times Abnormal Normal Failed controller Replace controller Abnormal Failed magnetron Replace magnetron Measure the output power Time does not count down after START pad is pressed Check continuity of secondaryswitch with door closed No Continuity Malfunction of secondary switch Replace the secondary switch Continuity Check connection between CN1 connector and c o...

Page 15: ...e high voltage transformer Check high voltage capacitor Abnormal Normal Failed high voltage capacitor Replace high voltage capacitor Check high voltage diode Abnormal Normal Failed high voltage diode Replace high voltage diode Operates at full power when programmed for lower power Abnormal Failed controller Replace controller Check magnetron Abnormal Failed magnetron Replace magnetron Disconnect w...

Page 16: ...tion and 50KΩ or more in the opposite direction NOTE Analog meter must contain a battery of 6 volts minimum Magnetron Discharge Capacitors Remove wires from magnetron and connect ohmmeter to terminals Also check between each terminal and ground 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 c...

Page 17: ...ds from RY3 terminals Connect ohm meter leads to terminals Plug oven into power supply Initiate cook cycle NOTE Fan relay remains energized for 60 seconds following cook cycle Line voltage input to control transformer Infinite Ω 1 Ω Power levels for Relay 2 Power Cycles Cycles Level On for Off for 20 3 sec 9 sec 50 6 sec 6 sec 70 9 sec 3 sec 100 12 sec 0 sec Infinite Ω 1 Ω 3 DEFROST 20 HOLD 0 4 ME...

Page 18: ...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 te...

Page 19: ... for a fully assembly oven before the latch switch primary is interrupted while pulling the door 4mW cm2 or less 1 Pour 275 cc 15 cc 9 oz 1 2 oz of 20 C 5 C 68 F 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 mea...

Page 20: ...isconnect wire terminals Insulated terminals Grasp insulator pod and pull back DO NOT PULL ON WIRE 1 Grasp Wire Insulator Pod 2 Pull Non insulated terminals Use a small blade screwdriver to depress locking tab and pull on terminal DO NOT PULL ON WIRE 1 Release locking tab Wire 2 Pull Outer Case 1 Disconnect power to oven 2 Remove screws securing outer case to unit 3 Slide outer case towards rear o...

Page 21: ...e order NOTE Be sure to re install ground wire when securing control panel to cavity Door Disassembly 1 Disconnect power to oven 2 Remove oven door see Door Removal 3 Begin at the bottom of the door near hinge insert flat blade screwdriver between choke cover and outer door panel Gently pry upward on choke cover to release tabs Work in clockwise direction to remove choke cover CAUTION To avoid pro...

Page 22: ... controller Key Pad Removal 1 Disconnect power to oven and remove outer case see Outer Case procedure 2 Remove control panel see Control Panel Removal section 3 Disconnect ribbon connector 4 Peel off failed key pad from control panel 6 Reassemble in reverse order Timer Removal Dial Models 1 Disconnect power to oven and remove outer case see Outer Case procedure 2 Remove control panel see Control P...

Page 23: ...itch operation switch bracket is adjustable 1 Disconnect power to oven and remove outer case see Outer Case procedure 2 Loosen switch bracket mounting screws 3 Close oven door move switch bracket toward rear of oven until door gap is less than 1 64 inch 0 5 mm 4 Hold switch bracket securely for proper switch operation and door fit retighten screws 5 Open oven door slowly watching the switches Veri...

Page 24: ...ection 2 Remove and replace fuse reassemble in reverse order CAUTION Before replacing a blown monitor fuse test the primary interlock switch secondary interlock switch monitor switch and power relay contacts for proper operation If the monitor fuse is blown by a failed switch operation all switches and controller must be replaced Magnetron Magnetron is mounted on the side of the cavity 1 Disconnec...

Page 25: ...ket Bulb Assembly 1 Disconnect power to oven and remove outer case see Outer Case section 2 Disconnect wire terminal plug 3 Carefully bend one tab to release socket 4 Remove light socket bulb assembly 5 Replace and reassemble in reverse order Antenna 1 Open oven door to gain access to oven tray 2 Using suction cup tool 59001235 Remove oven tray by placing suction cup on oven tray and raising oven ...

Page 26: ...53 Rev 0 2004 Maytag Appliances Company LD10D2 Timer Switch Interlock Switch Primary Magnetron TCO Oven TCO Fan Motor Stirrer Motor Oven Light Timer Motor Monitor Switch Power Transformer Interlock Switch Secondary Choke Filter Magnetron Rectifier Capacitor Noise Filter 120 VAC 60 Hz Primary Secondary Monitor C NO NC C C NO Interlock Switch Schematic Door open Schematic Condition Door Open Fuse 20...

Page 27: ...OR TIMER MOTOR BK BK BK BK BK BK 4 3 RD RD RD RD RD WH T M F M S M O L H V DIODE MAGNETRON CHOKE FILTER optional 1 2 FUSE 20A PRIMARY SWITCH TIMER SWITCH H V TRANSFORMER H V CAPACITOR N AC 120V 60Hz Important Safety Note The shaded areas on this schematic diagram incorporate special features important for protection from microwave radiation fire electrical shock and hazards When servicing it is es...

Page 28: ... Appliances Company LD10MP and LD10MPS Interlock Switch Primary Magnetron TCO Oven TCO Fan Motor Stirrer Motor Oven Light Monitor Switch Power Transformer Interlock Switch Secondary Choke Filter Magnetron Rectifier Capacitor Noise Filter 120 VAC 60 Hz Primary Secondary Monitor C NO NC C C NO Interlock Switch Schematic Door open Schematic Condition Door Open Fuse 20 Amp RY2 Controller RY3 RY1 1 3 5...

Page 29: ...MP MONITOR SWITCH STIRRER MOTOR FAN MOTOR RY2 RY3 RY1 1 3 5 7 8 GN GN PRIMARY SWITCH MGT THERMOSTAT OVEN THERMOSTAT WH WH BK BK BK BK NOISE FILTER ASSY GN GN1 WH WH BK BK FUSE 20A AC 120V 60Hz S M O L F M L N Important Safety Note The shaded areas on this schematic diagram incorporate special features important for protection from microwave radiation fire electrical shock and hazards When servicin...

Page 30: ... the risk of electrical shock personal injury or death disconnect power to oven and discharge capacitors before following any disassembly procedure WARNING 30 16023053 Rev 0 2004 Maytag Appliances Company This page intentionally left blank ...

Page 31: ... 2004 Maytag Appliances Company 16023053 Rev 0 A 1 Appendix A ...

Page 32: ...power level is selected oven operates at 100 power STOP RESET Use to exit programming mode and stop cooking during cooking cycle START Use to start Manual Time Entry program or restart interrupted cooking cycle Use to advance to next user option Use to save times and power levels when programming pads QTY 2X Use to automatically increase the programmed time for double quantities Operation LD10MP a...

Page 33: ...ng stage is programmed total time for all stages displays COOK shows when oven is operating 20 indicates the microwave power level used If power level does not show oven is heating at 100 power Programming Displays Indicates programming mode See Programming section of manual for programming procedure Indicates programming user options mode See User Options section of manual for programming procedu...

Page 34: ...red number pad Oven operates and time counts down 3 Oven stops heating and oven signal sounds when heating timing elapses Operating QTY 2X Pads 1 Press QTY 2X pad 2 Press desired number pad Example Press QTY 2X pad then pad 1 18 sec NOTE This feature automatically sets the time preprogrammed for multiple cooking items The pad times are not representive of the preprogrammed double digit option Prep...

Page 35: ...ng MEDIUM 50 pad sets oven to 50 power Display shows current power level if other than 100 power 6 Press START pad to save new heating time and power level in oven memory Repeat step 3 6 to program additional pads 7 Press RESET pad or close oven door to exit programming mode Multiple Heating Stages Follow instructions below to program oven to perform 3 consecutive heating cycles without interrupti...

Page 36: ...s opened 5 beeps bursts until door is opened 2 Speaker Volume OP 20 OP 21 OP 22 OP 23 Eliminates beep Sets volume to low 60 70dB Sets volume to medium 70 80dB Sets volume to high 80 90dB 3 Key Beep OP 30 OP 31 Prevents signal when pad is pressed Allows signal when pad is pressed 4 Keyboard Enable Window OP 40 OP 41 30 seconds after oven door is opened keyboard disabled 2 minutes after oven door is...

Page 37: ...an dense meats of the same size Porous foods absorb microwaves quickly throughout Meats absorb microwaves mostly at the exterior surface and the interior is heated by conduction increasing the cooking time Meats can be cooked in a sauce if desired Due to the moisture content a sauce will heat rapidly The heat will transfer to the meat so the meat will heat faster due to heat by conduction as well ...

Page 38: ...cycled paper Plastic Lead crystal Wood Newspapers Metal Metallic trimmed china Utensil Check Test Use the following test to check utensils for microwave safeness 1 Place glass measuring cup of water next to empty dish to be tested in microwave oven 2 Heat on full power for one minute 3 Check temperature of dish and water If dish remains cool and water is hot dish is microwave safe If dish is sligh...

Page 39: ...p of cooking vapors along intake and discharge louvers on bottom and back of oven Clean air vents with damp cloth to ensure proper airflow Dry thoroughly Control Panel Open oven door to deactivate oven timer Clean with mild detergent in warm water using soft sponge or cloth Splatter Shields Splatter shields can be cleaned in place or removed Clean with mild detergent in warm water using soft spong...

Page 40: ...t work Oven light must be replaced by a servicer If oven operates intermittently Check air discharge area for obstructions Oven operates but does not heat food Place one cup cool water in oven Heat for one minute If water temperature does not rise oven is operating incorrectly and a servicer should be called Any questions or to locate an authorized servicer call 1 866 426 2621 inside U S A 1 319 6...

Page 41: ... 2004 Maytag Appliances Company 16023053 Rev 0 B 1 Appendix B ...

Page 42: ...signal sounds and oven shuts off Pausing or Stopping Operation 1 Open oven door Oven stops heating Timer maintains current time setting 2 Heating resumes when door is closed 3 Turn timer knob counterclockwise to OFF to clear all cooking time LD10D2 1000 WATT Return dial to 0 if food is removed before end of cook cycle Place food in oven Close door Set dial to desired time Remove food when bell rin...

Page 43: ...n dense meats of the same size Porous foods absorb microwaves quickly throughout Meats absorb microwaves mostly at the exterior surface and the interior is heated by conduction increasing the cooking time Meats can be cooked in a sauce if desired Due to the moisture content a sauce will heat rapidly The heat will transfer to the meat so the meat will heat faster due to heat by conduction as well a...

Page 44: ...ecycled paper Plastic Lead crystal Wood Newspapers Metal Metallic trimmed china Utensil Check Test Use the following test to check utensils for microwave safeness 1 Place glass measuring cup of water next to empty dish to be tested in microwave oven 2 Heat on full power for one minute 3 Check temperature of dish and water If dish remains cool and water is hot dish is microwave safe If dish is slig...

Page 45: ...oroughly Control Panel Open oven door to deactivate oven timer Clean with mild detergent in warm water using soft sponge or cloth Splatter Shields Splatter shields can be cleaned in place or removed Clean with mild detergent in warm water using soft sponge or cloth Splatter shields are held in place with 3 screws If desired remove splatter shields for cleaning by removing screws Replace splatter s...

Page 46: ... work Oven light must be replaced by a servicer If oven operates intermittently Check air discharge area for obstructions Oven operates but does not heat food Place one cup cool water in oven Heat for one minute If water temperature does not rise oven is operating incorrectly and a servicer should be called Any questions or to locate an authorized servicer call 1 866 426 2621 inside U S A 1 319 62...

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