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. This service manual replaces 16022123. Countertop Commercial Microwave Ovens This manual covers technical service information.
Important Information Important Notices for Servicers and Consumers Maytag will not be responsible for personal injury or property damage from improper service procedures. 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.
Table of Contents Important Information .................................................... 2 Important Safety Information .......................................4-8 General Information Unpacking Equipment ................................................ 9 Placement of the Oven ............................................... 9 Radio Interference ...................................................... 9 Model Identification .................................................... 9 Service ......................
Important Safety Information ! WARNING 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 the Radarange to maintain this safety. These are as follows: 1. Always operate the unit from an adequately grounded outlet. Do not operate on a two-wire extension cord. 8.
Important Safety Information Recognize this symbol as a SAFETY message ! WARNING When using electrical equipment, basic safety precautions should be followed to reduce the risk of burns, electrical shock, fire, or injury to persons. 1. READ all instructions before using equipment. 2. READ AND FOLLOW the specific “PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY”. 3. This equipment MUST BE GROUNDED. Connect only to properly GROUNDED outlet. See “GROUNDING INSTRUCTIONS”. 4.
Important Safety Information ! CAUTION To avoid risk of personal injury or property damage, observe the following: 1. Briskly stir or pour liquids before heating with microwave energy to prevent spontaneous boiling or eruption. Do not overheat. If air is not mixed into a liquid, liquid can erupt in oven or after removal from oven. 7. Do not use regular cooking thermometers in oven. Most cooking thermometers contain mercury and may cause an electrical arc, malfunction, or damage to oven. 8.
Important Safety Information Grounding Instructions ! WARNING Precautions to be observed before and during servicing to avoid possible exposure to excessive microwave energy, or electrical shock disconnect power to oven. • Do not operate or allow oven to be operated with door open.
Important Safety Information Servicing of Grounded Products Explanation 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.
General Information Unpacking Equipment Radio Interference • Inspect equipment for damage such as dents in door or dents inside oven cavity. • Report any dents or breakage to source of purchase immediately. Do not attempt to use oven if damaged. • Remove all materials from oven interior. Microwave oven operation may cause interference to radio, television, or similar equipment.
General Information Microwave Oven Features B A A—Window door screen B—Spatter shields C—Control panel (Electric or Dial) D—Door open button E—Safety door lock system C D E MicrowaveSpecifications Models LD10D2 LD10MP LD10MPS Power Source Voltage AC Amperage (Single Unit) Frequency Single phase, 3−wire ground Receptacle Plug Power cord Power Output Normal microwave energy (IEC705) Operating Frequency Power Consumption Cook condition microwave Cabinet Width Height Depth Oven Interior Width Height D
Troubleshooting Procedures When you get a complaint from customers, evaluate the complaint carefully. If the following symptoms apply, instruct the customer in the proper use of the microwave oven. This can eliminate an unnecessary service call. ! CAUTION • • • • Verify proper grounding before checking for trouble. Be careful of the high voltage circuit. Discharge the high voltage capacitor.
Troubleshooting Procedures (Electronic Models) Trouble 1: The following visual conditions indicate a probable failed control circuit. 1. Incomplete segments. • Segment missing. • Partial segment missing. • Digit flickering (Note: Slight flickering is normal.) 2. Colon does not turn on or blink. 3. A distinct change in the brightness of one or more numbers in display. 4. One or more digits in the display are not lighting. 5.
Troubleshooting Procedures (Dial and Electronic Models) Oven does not operate at all, display window does not display any digits and no input is accepted. Fuse blows. Check continuity of monitor switch with door closed. Continuity Malfunction of the monitor switch. No Continuity Check continuity of primary switch with door opened. Continuity Malfunction of primary switch. No Continuity Check continuity of secondary switch with door opened. Continuity Malfunction of secondary switch.
Troubleshooting Procedures (Electronic Models) Display shows all digits programmed, but does not start cooking when the START pad is pressed. Time does not count down after START pad is pressed. Check continuity of secondaryswitch with door closed. Malfunction of secondary switch. Replace the secondary switch. Continuity Failed controller. Replace controller. No Continuity Loose connection. Repair connection. No Continuity Continuity Check connection between CN1 connector and c.ontroller.
Troubleshooting Procedures (Dial and Electronic Models) No microwave oscillation even when oven light and fan motor operate. No microwave oscillation. Disconnect wire leads from relay RY2 and verify continuity of the relay. No Continuity Check high voltage transformer. Abnormal Failed controller. Replace controller. Continuity Failed high voltage transformer. Replace high voltage transformer. Failed high voltage capacitor. Replace high voltage capacitor. Normal Check high voltage capacitor.
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 Thermal Cutout Capacitor Test Disconnect all wires from TCO. Measure resistance across terminals. Magnetron TCO .......................................... Cavity TCO..................................................
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 Timer 6 minute Test Disconnect wire from terminals. Measure resistance of the following terminals: Terminal 3 to terminal 4 (timer motor) ..... Terminal 1 to terminal 2(timer switch) .....
Microwave Power Test 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. 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.
Microwave Leakage 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. ! WARNING Check for radiation leakage after servicing. Should the leakage be more than 4mW/cm2 inform Maytag immediately. After repairing or replacing any radiation safety device, keep a written record for future reference, as required by D.H.H.S. and HEW regulations.
Disassembly Procedures ! To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. WARNING High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle. It is neither necessary or advisable to attempt measurement of the high voltage. Before touching any oven components or wiring, always unplug the oven from its power source and discharge capacitor.
Disassembly Procedures ! To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. WARNING ! CAUTION A microwave leakage test must be performed anytime a door assembly is removed, replaced, disassembly, or adjusted for any reason. NOTE: When disassembling door, use caution to prevent deformation of slats on door frame/ choke assembly. Door Disassembly Control Panel Removal 1.
Disassembly Procedures ! To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. WARNING Controller Removal (Electronic Models) Timer Removal (Dial Models) 1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure). 2. Remove control panel, (see "Control Panel" section). 3. Disconnect keypad ribbon connector . 1.
Disassembly Procedures ! To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. WARNING Interlock Switches Primary switch is operated by bottom latch arm. Interlock Switch Removal 1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure). 2. Remove control panel, (see "Control Panel" section). 3. Test interlock switches before removing, (see testing procedures). 4.
Disassembly Procedures ! To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. WARNING Diode Magnetron 1. Disconnect power to oven and remove outer case, (see "Outer Case" procedure). 2. Discharge high voltage capacitor, (see "High Voltage Capacitor" section). 3. Disconnect diode from high voltage capacitor and remove screw securing diode to ground. 4. Reassemble in reverse order.
Disassembly Procedures ! To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. WARNING 7. Disconnect wires from fan motor terminals. 8. Carefully note fan blade direction and placement on motor shaft. 9. Pull fan blade from motor shaft. 10.Remove screws securing motor to shroud and remove motor. 11. Reassemble in reverse order. Antenna 1. Open oven door to gain access to oven tray. 2.
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.
©2004 Maytag Appliances Company GN N WH N L WH OVEN LAMP 16023053 Rev. 0 WH S.M 1 WH STIRRER MOTOR BK WH TIMER MOTOR SECONDARY SWITCH MONITOR SWITCH BL RD RD NOTICE: Since this basic schematic diagram, the values of components and some partial connections are subject to change for improvement. H.V DIODE H.V CAPACITOR H.
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.
GN AC 120V 60Hz WH BK N L PK PT1 SEC SWITCH 8 7 5 3 1 GN1 GN GN RY1 16023053 Rev. 0 RY3 S.M BK WH WH RD : RED GN : GREEN WH WH BL : BLUE PK : PINK BL O.L. BK RD H.V. CAPACITOR The shaded areas on this schematic diagram incorporate special features important for protection from microwave radiation, fire, electrical shock, and hazards.
Wiring Diagram and Schematic ! WARNING To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. This page intentionally left blank. 30 16023053 Rev.
Appendix A ©2004 Maytag Appliances Company 16023053 Rev.
Operation—LD10MP and LD10MPS Display Control Panel COOK Some items in display can be seen but will not glow. OZ HEATER T/table OFF 10 PROGRAM PADS TIME ENTRY HOLD 0% DEFROST 20 % MEDIUM 50 % MED- HI 70 % QTY 2X STOP RESET START COOK OZ HEATER T/table OFF 1 2 3 4 5 6 7 8 9 0 3 COOKING STAGES Pads TIME ENTRY Use to enter heating time without changing preprogrammed number pads.
Operation—LD10MP and LD10MPS Cooking Displays Shows when power is connected to oven. Open and close door to clear. -- --- -- READY shows when oven control will accept entries. Appears after oven door is opened and closed. READY 88:88 shows heating time. When more than 1 heating stage is programmed, total time for all stages displays. COOK shows when oven is operating. COOK OZ HEATER 20 indicates the microwave power level used. If power level does not show, oven is heating at 100% power.
Operation—LD10MP and LD10MPS Preprogrammed Times and Cook Level All preprogrammed pads are set at full power. ! CAUTION To avoid damaging oven, only heat in microwave oven when turntable is in place. Option: Single Digit ! CAUTION To avoid fire, do not dry newspapers or clothes in microwave oven. Interrupting Operation • Open oven door to interrupt operation. Oven fan continues to operate. Close door and press START pad to resume oven operation. • Press STOP/RESET pad to interrupt operation.
Operation—LD10MP and LD10MPS 4. Press desired power level pad to change power level. • If a power level pad is not pressed, oven defaults to 100% power. • For example, pressing MEDIUM 50% pad sets oven to 50% power. • Display shows current power level if other than 100 percent power. 5. Press START pad. • Oven operates and time counts down. 6. Oven stops heating and oven signal sounds when heating timing elapses. Programming Preprogrammed Number Pads Oven has 10 preprogrammed number pads.
Operation—LD10MP and LD10MPS User Options Follow the instructions below to customized the microwave oven’s operation. End-of-cycle signal, maximum heating time and other options can be changed to meeting your cooking needs. 1. Open oven door. • If door is closed or RESET pad is pressed before finishing programming sequence, oven exits programming mode. 2. Press and hold pad 2 for approximately 5 seconds. • After 5 seconds, signal sounds. Display shows “OPTION”. Numbered Pads 3.
Cooking Guidelines The Amana Microwave Oven can make your job easier. You’ll cook ahead and pre-portion more. You’ll also spend less time preparing special-order dishes. To be sure of consistently good results, remember a few simple guidelines. How Microwave Ovens Heat Food All food and liquid molecules have positive and negative particles which are in constant, but slow, motion. (Positive and negatives attract and repel each other like magnets.
Cooking Guidelines Some foods can’t be stirred and should be repositioned or rearranged during cooking. Some examples include baked potatoes, cupcakes (in custard cups), and chicken pieces. Rearranging allows for more even cooking of foods. Foods which are cooked, covered or which are cooked using lower power levels, usually require little rearranging. There are actually two types of turning. Turning is done when foods cannot be stirred.
Care and Cleaning Part Description Interior, Exterior, and Door Clean microwave oven with mild detergent in warm water using soft sponge or cloth. Wring sponge or cloth to remove excess water before wiping equipment. If desired, boil a cup of water in microwave oven to loosen soil before cleaning. Important: • Do not use abrasive cleansers or cleaners containing ammonia. These could damage finish. • Never pour water into microwave oven bottom. • Do not use water pressure type cleaning systems.
Before Calling for Service Record all inspections and repair for future reference. ! WARNING To avoid electrical shock which can cause severe personal injury or death, do not remove outer case at any time. Only an authorized servicer should remove outer case. Symptom Check If oven does not operate: • Check fuse or circuit breaker. • Confirm oven is plugged into dedicated circuit. • Confirm oven is on grounded and polarized circuit. Contact electrician to confirm.
Appendix B ©2004 Maytag Appliances Company 16023053 Rev.
Operation—LD10D2 Heating ! CAUTION LD10D2 1000 WATT To avoid damaging oven, only heat in microwave oven when turntable is in place. 0 ! CAUTION 15 30 sec 45 6 min. To avoid fire, do not dry newspapers or clothes in microwave oven. 1 15 sec 30 45 1. Open oven door, place food in oven, and close door. 2. Set timer knob to desired cooking time by turning clockwise. • Turn timer knob slightly past and then back to desired cooking time for the most accurate time setting. • Heating begins. 3.
Cooking Guidelines The Amana Microwave Oven can make your job easier. You’ll cook ahead and pre-portion more. You’ll also spend less time preparing special-order dishes. To be sure of consistently good results, remember a few simple guidelines. How Microwave Ovens Heat Food All food and liquid molecules have positive and negative particles which are in constant, but slow, motion. (Positive and negatives attract and repel each other like magnets.
Cooking Guidelines Some foods can’t be stirred and should be repositioned or rearranged during cooking. Some examples include baked potatoes, cupcakes (in custard cups), and chicken pieces. Rearranging allows for more even cooking of foods. Foods which are cooked, covered or which are cooked using lower power levels, usually require little rearranging. There are actually two types of turning. Turning is done when foods cannot be stirred.
Care and Cleaning Part Description Interior, Exterior, and Door Clean microwave oven with mild detergent in warm water using soft sponge or cloth. Wring sponge or cloth to remove excess water before wiping equipment. If desired, boil a cup of water in microwave oven to loosen soil before cleaning. Important: • Do not use abrasive cleansers or cleaners containing ammonia. These could damage finish. • Never pour water into microwave oven bottom. • Do not use water pressure type cleaning systems.
Before Calling for Service Record all inspections and repair for future reference. ! WARNING To avoid electrical shock which can cause severe personal injury or death, do not remove outer case at any time. Only an authorized servicer should remove outer case. Symptom Check If oven does not operate: • Check fuse or circuit breaker. • Confirm oven is plugged into dedicated circuit. • Confirm oven is on grounded and polarized circuit. Contact electrician to confirm.
