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Models and manufacturing
numbers in this manual.
2002 models are listed in bold.
ACO1520AB
ACO1520AC
ACO1520AW
ACO1530AB
ACO1530AW
Service
ACO1560AB
ACO1560AC
Over The Range 2001 and 2002
ACO1560AS
Domestic Microwave Ovens ACO1560AW
ACO1840AB
ACO1840AC
This manual replaces RS2100011 Revision 0.
ACO1840AW
ACO1860AB
Service Manual for:
ACO1860AC
®
Amana
®
ACO1860AS
Jenn-Air
®
Maytag
ACO1860AW
JMV8196AAB
JMV8196AAQ
JMV8196AAS
JMV8196AAW
MMV4184AAB
MMV4184AAQ
MMV4184AAW
MMV5156AAB
MMV5156AAQ
MMV5156
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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 MANU
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Table of Contents Important Information ................................................... 2 Disassembly Procedures Important Product Information ...................................... 4 Grille ........................................................................ 18 Important Safety Information ........................................ 5 Door Assembly ........................................................ 18 Microwave Leakage Testing ......................................... 6 Door Disassem
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Important Product Information ! WARNING ! WA RN IN G To avoid risk of electrical shock, injury or death, make Precautions to be observed before and during sure these grounding instructions are followed. servicing to avoid possible exposure to excessive microwave energy or electrical shock, disconnect power to oven. Grounding Instructions (A) Do not operate or allow oven to be operated with door open. ! WARNING (B) Make the following safety checks on all ovens to Do not remove grounding prong w
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Important Safety Information 7. In the area of the transformer, capacitor, diode, and ! CAUTION magnetron there is HIGH VOLTAGE. When the unit is operating - keep this area clean and free of Read the following information to avoid possible anything which could possibly cause an arc or exposure to microwave radiation: ground, etc. 8. Do not for any reason defeat the interlock switches, The basic design of the Maytag microwave oven makes it there is no valid reason for this action at any time; an
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Microwave Leakage Testing Measurement With the Outer Panel ! WARN ING Removed Check for radiation leakage after servicing. Should the 2 leakage be more than 4mW/cm inform Maytag ! DANGER immediately. After repairing or replacing any radiation Avoid contacting any high voltage components. safety device, keep a written record for future reference, as required by DHHS and HEW regulations. This requirement must be strictly observed. In addition, Whenever you replace the magnetron, measure for the
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General Information Please read the owner’s manual information. It will tell Parts and Accessories how to use all the features of this microwave oven. Purchase replacement parts and accessories over the phone. To order accessories for your product call: Location of Model Number To request service information or replacement parts, the For Amana product call 1-877-232-6771 or visit the service center will require the complete model number of Web Site at www.amana.com your microwave oven. The num
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General Information Grounding Instructions This appliance must be grounded. If an electrical short Properly Polarized and circuit occurs, grounding reduces the risk of electric Grounded Outlet shock by providing an escape wire for the electric current. The cord for this appliance has a grounding wire with a grounding plug. Put the plug into an outlet that is properly installed and grounded. ! WARNING To avoid risk of electric shock, personal injury or death, use grounding plug properly. Three-Pr
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Testing Procedures Disconnect power before performing the following WARNING ! procedures unless testing requires it. NOTES: Interlock Monitor Switch Test • Perform microwave energy leakage test if unit is When the door is opened slowly, an audible click should serviced for any reason. be heard. If the latch does not activate the switch when Verify wire leads are connected to correct positions. the door is closed, the switch should be adjusted in When removing wire terminal plugs from connect
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Testing Procedures Disconnect power before performing the following WARNING ! procedures unless testing requires it. 4. Measure resistance of the terminals on the high 4. Measure the following terminals with meter on voltage transformer with meter on R x 1 scale. R x 1000 scale. Reading should be indicated as follows: Normal indication: Primary winding ......less than 1.0 ohms Terminal 1 to terminal 2 ......... 4.5K to 6.2K ohms Filament winding ....less than 1.0 ohms Terminal 2 to terminal 3 ..
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Testing Procedures Disconnect power before performing the following WARNING ! procedures unless testing requires it. 3. Disconnect ribbon connector by siding top part of ACO1560/MMV5156 models continued connector upward. Once in released position remove Easy Cook 3 - 10 1 7 - 9 ribbon from connector by siding ribbon side-to-side. Time Defrost 3 - 11 2 7 - 10 NOTE: Caution should be used when removing cable Start 3 - 12 3 7 - 11 from connector. Ribbon cable has two holes Sensor Potato 3 - 13 4
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Testing Procedures Disconnect power before performing the following WARNING ! procedures unless testing requires it. Circuit Board Oven Thermostat Following symptoms indicate a failed circuit board. 1. Disconnect power to oven and remove control panel, (see "Control Panel" section). High voltage systems, interlock switches, door sensing 2. Discharge high voltage capacitor, (see "High Voltage and relay indicate good, but start function fails to Capacitor" section). operate. 3. Remove outer case
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Troubleshooting Procedures "PLEASE TOUCH TIME OF DAY" 1. Check power supply. does not appear in 2. Check fuse. the display, 3. Check oven thermostat. when unit is plugged in. Measure voltage between pin 1 and pin 3 of CN1 connector YES Is 120 volts Replace indicated. circuit board. NO Verify proper connection of Unit operates. circuit board. Display does not Measure resistance Key pad matrix is located in indicate correct number of control key “Testing Procedures” on page 11. press
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Troubleshooting Procedures Check: 1. Touch Keypad. Measure resistance of Display does not CN2 between pin 1 and count down when pin 3 with door closed. START is pressed. Is Verify proper continuity connection of indicated. ribbon YES connector. Does ribbon NO connector have proper NO connection. YES Adjust or replace door Reconnect sensing ribbon connector switch. Replace for proper circuit connection. board. Unit operates. No buzzer sound when Verify normal pressing con
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Troubleshooting Procedures Check: 1. Air Vents. Unit operates normal, Check if fan motor but little or no heating operates when is produced with an START is pressed. oven load. Does fan motor Measure YES operate when resistance START is of high voltage pressed. capacitor. Does capacitor have correct resistance. NO See to Testing NO Procedures on page 10. YES Place a jumper wire across Replace high thermostat. voltage capacitor. Replace magnetron. Does
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Troubleshooting Procedures Check: 1. Primary and Secondary Interlock Switches. 2. Thermostat. Unit does not heat even Check the if display counts down contacts of when START pad is RY2 relay. pressed for high power. Verify proper Does relay connection of contacts measure YES ribbon correct resistance. connector. NO Does ribbon connector have proper Replace NO connection. circuit YES board. Reconnect ribbon connector for Replace proper circuit connection. board. Unit operat
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Troubleshooting Procedures Check: 1. Power Supply. 2. Fuse. Ventilation fan does Measure resistance not operate when of magnetron FAN HIGH/LOW pad thermal fuse and is pressed. oven thermostat. Does magnetron Verify proper Does ribbon thermal fuse and connection of YES connector have oven thermostat have ribbon proper the correct connector. connection. resistance. YES NO NO Test and Replace Reconnect ribbon circuit replace connector for board. failed proper connecti
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Disassembly Procedures To avoid the risk of electrical shock, personal injury or death; disconnect power to oven and discharge ! WA RN IN G capacitors before following any disassembly procedure. NOTE: All procedures are written for the ACO18*, Door Removal JMV8196*, MMV4184, and MMV5186* models. 1. Disconnect power to oven and remove grille, (see Specific instruction for the ACO15*, MMV5156* "Grille" procedure). models are as described in the procedures. 2. Open the oven door, slowly raise the d
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Disassembly Procedures To avoid the risk of electrical shock, personal injury or death; disconnect power to oven and discharge ! WA RN IN G capacitors before following any disassembly procedure. 6. Remove door handle by placing a hand on door panel Control Panel next to the top of the door handle. Twist door panel The control panel is made up of several components, towards the inside of door and pulling on the top such as p.c. board and touch panel. portion of the door handle in a quick jerking
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Disassembly Procedures To avoid the risk of electrical shock, personal injury or death; disconnect power to oven and discharge ! WA RN IN G capacitors before following any disassembly procedure. Control Key Panel CN1 Main power connector CN2 Primary switch The key panel has one ribbon connection on the p.c. CN5 Humidity sensor (some models) board. FPC (S1) Ribbon connector for key panel The key panel pads can be checked through a continuity Relay 2 Relay connector test. Operations of key pad can
