Maytag MMV5165AAB Service Manual Download Page 16

7-4

DISASSEMBLY INSTRUCTIONS

IMPORTANT NOTES:

UNIT MUST BE DISCONNECTED FROM ELEC-
TRICAL OUTLET WHEN MAKING REPAIRS, RE-
PLACEMENTS, ADJUSTMENTS AND CONTIN-
UITY CHECKS.
WHEN RECONNECTING THE WIRE LEADS TO
ANY PART, MAKE SURE THE WIRING CONNE-
CTIONS AND LEAD COLORS ARE CORRECTLY
MATCHED ACCORDING TO THE OVERALL CIR-
CUIT DIAGRAM. (ESPECIALLY SWITCHES AND
HIGH VOLTAGE CIRCUIT.)

A.  REMOVING POWER AND CONTROL

CIRCUIT BOARD (Figures 1, 2 and 3)

(1)  Remove a screw securing the control panel

assembly to the oven cavity.

(2)  Remove the control panel with pushing it upward. 
(3)  Remove the connectors (CN1, CN3) and wire

leads (RY7) from the circuit board. 

(4)  Remove 5 screws securing the circuit board.

Power Transformer

Control Panel

Screw

Circuit Board

(CN3)

(RY7)

(CN1)

Circuit Board

Control Bracket

Circuit Board

FPC Connector(S1)

(5)  Remove the FPC connector from the terminal

socket following “HOW TO REMOVE THE FPC
CONNECTOR” on the next page.

(6)  Remove the circuit board from the control bracket

carefully.

Figure 1

Figure 2

Figure 3

Summary of Contents for MMV5165AAB

Page 1: ...Microwave Oven Service Manual MMV5165AAB W Q S CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL...

Page 2: ...oper 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 ad...

Page 3: ...L CIRCUIT DIAGRAM 5 1 SCHEMATIC DIAGRAM I 5 1 SCHEMATIC DIAGRAM II 5 2 MATRIX CIRCUIT FOR TOUCH KEY BOARD 5 3 GENERAL INFORMATION FOR SERVICE 6 1 GENERAL PRECAUTIONS IN USE 6 1 TRIAL OPERATION 6 1 FEA...

Page 4: ...ck Switch Interlock Monitor Switch Magnetron 2M246 310GT Cook top Lamp 120 V 30 W Cavity Lamp 125 V 30 W or 40 W Timer Digital up to 99 min 99 sec in each cooking stage Tray Tempered Safety Glass Over...

Page 5: ...g operation BEFORE TOUCHING any parts of the oven always remove the power plug from the outlet Remove your watches whenever working close to or replacing the Magnetron DO NOT touch any parts of the co...

Page 6: ...ROUNDING INSTRUCTIONS For personal safety this appliance must be fully grounded at all times In the event of an electrical short circuit grounding reduces the risk of electrical shock The plug must be...

Page 7: ...4 1 OPERATING INSTRUCTIONS CONTROL PANEL 1 11 3 5 4 8 2 26 23 27 18 17 25 22 6 14 7 12 10 9 13 21 19 15 16 20 28 24...

Page 8: ...time each time you press it See page 9 for more information 11 AUTO DEFROST Meat poultry fish Touch this pad to select food type and defrost food by weight See page 14 for more information 12 TIME DE...

Page 9: ...5 1 OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM I Check the Model No THERMOSTAT...

Page 10: ...5 2 SCHEMATIC DIAGRAM II Check the Model No ADD Noise filter...

Page 11: ...5 3 MATRIX CIRCUIT FOR TOUCH KEY BOARD KEY MATRIX...

Page 12: ...show the time counting down by seconds D After about 5 minutes make sure the primary interlock switch the secondary interlock switch and the interlock monitor switch operate properly by opening and c...

Page 13: ...the limit of 5 mW cm2 All service adjustments should be made for minimum microwave energy leakage readings 3 Do not operate the unit until it is completely repaired if any of the following conditions...

Page 14: ...ervicing The power density of the microwave radiation leakage emitted by the microwave oven should not exceed 1mW cm sq And always start measuring of an unknown field to assure safety for operating pe...

Page 15: ...have been used 3 At least once a year have the electromagnetic energy leakage monitor checked for calibration by its manufacturer POWER OUTPUT MEASUREMENT 1 Microwave power output measurement is made...

Page 16: ...CIRCUIT BOARD Figures 1 2 and 3 1 Remove a screw securing the control panel assembly to the oven cavity 2 Remove the control panel with pushing it upward 3 Remove the connectors CN1 CN3 and wire leads...

Page 17: ...ert the F P C connector into the terminal socket securely with the fingers 2 Hold the plastic fastener with thumb and forefinger of the other hand and push it slowly into the terminal socket Figure 6...

Page 18: ...rning the screws 1 or 2 screws securing it to the out case 4 Remove two screws on the left central edge and one screw on the right central edge of Base plate Remove the Mount All from the out case by...

Page 19: ...Latch Board Primary Interlock Switch RD from H V T RD from Fan Motor BK from Cooktop lamp WH from RY7 PK from P C B BL from P C B RD from Turntable Motor RD from H V T BK from MGT THERMOSTAT Monitor...

Page 20: ...ket in the correct position and be sure that the gasket is in good condition After replacing the magnetron check for microwave energy leakage with a survey meter Check microwave energy leakage must be...

Page 21: ...ver etc 2 Remove two screws securing it to the door handle CAUTION Be careful not to damage door seal plate with the screwdriver H ASSEMBLING DOOR 1 When mounting the door assembly to the oven assembl...

Page 22: ...9 3 Remove the base plate by removing 8 screws securing it to the oven cavity Figure 20 4 Disconnect the leadwire from the turntable motor terminals 5 Remove the 1 screws securing the turntable motort...

Page 23: ...7 11 K REPLACING THE HUMIDITY SENSOR 1 Remove the sensor by removing two screws securing it to the air duct See Figure 22 2 Mount the new humidity sensor to the air duct Figure 22...

Page 24: ...d and the switches as shown in Figure 23 a 2 Close the door tightly and check gaps A and B to be sure they are no more than 1 64 0 5 mm See Figure 23 b for close up view of gaps A and B door latches I...

Page 25: ...o to the body of the switches in the following sequence Interlock Monitor Switch Primary Interlock Switch Secondary Interlock Switch NOTE The Interlock Monitor Switch is an added safety check on the P...

Page 26: ...hen the secondary switch operation is abnormal make the necessary adjustment or replace the switch only with the same type of switch C MONITOR SWITCH TEST Disconnect the wire lead from the monitor swi...

Page 27: ...1 Remove wire leads 2 Measure resistance ohm meter scale Rx1 Primary winding Secondary winding Filament winding 3 Measure resistance ohm meter scale Rx1000 Primary winding to ground Filament winding t...

Page 28: ...Rx1000 CAPACITOR DIODE Some inexpensive ohm meters may indicate infinite resistance in both directions 1 Measure continuity ohm meter scale Rx1 2 Remove the lead wires and operate oven at power level...

Page 29: ...ead wires 2 Measure resistance ohm meter scale Rx1 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1000 VENTILATION MOTOR TURNTABLE MOTOR 1 Disconnect sensor connector from micom computer b...

Page 30: ...MATRIX CIRCUIT FOR TOUCH KEY BOARD CONNECTOR KEY CON TOUCH KEY BOARD Resistance value When touched Less than 400 ohms When not touched More than 1 mega ohm FPC CONNECTOR Top 1 2 3 4 5 6 7 8 9 10 11 1...

Page 31: ...ADJUSTMENT PROCEDURES on page 7 12 when the primary interlock secondary interlock switches and or the interlock monitor switches are adjusted or replaced Fuse blows immediately after the door is close...

Page 32: ...ithout touching START key when the door is closed GOOD Remove the mate connector of I O CON from the circuit board Does the unit still operate Defective Wire Assembly Replace the circuit board Replace...

Page 33: ...sly operates 3 Proper temperature measurement is not obtained 4 The buzzer does not sound or continues to sound 5 Some segments of one or more digits do not light up or they continue to light up or se...

Page 34: ...2 FUSE See CHECKOUT PROCEDURES FOR FUSE BLOWING on page 7 19 3 OVEN CAVITY THERMOSTAT 1 1 Measure voltage between pin 1 and pin 3 of connector CN1 0 120 120V Replace circuit board Normal circuit board...

Page 35: ...board Contact OK Normal contact Correct seating Check contact of connector S1 Check the contact of relay 7 see page 7 16 Runs Runs Resistance incorrect Check the continuity of H V C see page 7 16 Nor...

Page 36: ...7 24 PROBLEM F No buzzing when touching the key between stages or at end of cooking 1 Normal circuit board Check normal operation circuit board Replace circuit board Runs...

Page 37: ...thermostat Poor contact Replace circuit board Normal circuit board Contact OK Normal contact Correct seating Check contact of connector S1 see page 7 5 Replace ventilation motor ASS Y NO runs Normal...

Page 38: ...1007 1005 1381 1000 1002 1004 1006 1007 1008 1003 W109 W105 W108 W109 W105 Check the Serial No 51 1383 1383 DOOR PARTS FOR MODEL MMV5165AAB MMV5165AAQ MMV5165AAW FOR MODEL MMV5165AAS Serial Number lde...

Page 39: ...2004 2002 2000 2006 2008 2381 2381 2004 2008 W106 W106 2006 2006 2009 Check the Serial No 51 Check the Serial No 10 50 CONTROLLER PARTS FOR MODEL MMV5165AAB MMV5165AAQ MMV5165AAW FOR MODEL MMV5165AAS...

Page 40: ...3 3010 W109 3001 3029 01 3014 6038 6001 6000 3011 3025 W121 W118 3026 3028 W121 W118 3018 3036 3024 04 W142 W138 For Model MMV5165AAB MMV5165AAS For Model MMV5165AAQ MMV5165AAW 5036 OVEN CAVITY PARTS...

Page 41: ...8 4 4001 W111 W102 4000 4002 4003 4002 4004 LATCH BOARD PARTS EV...

Page 42: ...8 5 W101 5023 3002 3017 3008 5009 W108 5049 W101 5000 5002 5018 W101 W105 3009 W108 W108 3037 5067 W104 W136 5008 5035 INTERIOR PARTS I EV...

Page 43: ...027 5029 W101 W144 5412 W110 5012 5007 5001 5005 Check the Serial No Check the Serial No Check the Serial No Check the Serial No INTERIOR PARTS II I Model MMV5165AAW MMV5165AAB MMV5165AAQ Check the ra...

Page 44: ...5001 W150 5015 5045 5037 5038 W109 5006 5010 5016 5014 5011 W105 5044 3004 3027 5024 5027 5029 W101 W144 5412 W110 5012 5007 5041 INTERIOR PARTS II II Model MMV5165AAW MMV5165AAB MMV5165AAQ Check the...

Page 45: ...8 8 6008 W109 6011 6010 VINYL BAG 6009 INSTALLATION PARTS EV...

Page 46: ...P NO 3828W5S5156 Printed in Korea...

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