Sub-Zero Wolf Drop-Down Door Series Service Manual Download Page 1

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General Information

Controls & Operation

Component Access & Removal

Troubleshooting Guide

Technical Data

Wiring Diagrams

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MDD Microwave

Service Manual

Summary of Contents for Wolf Drop-Down Door Series

Page 1: ...General Information 2 Controls Operation 8 Component Access Removal 17 Troubleshooting Guide 29 Technical Data 38 Wiring Diagrams 39 subzero com 800 222 7820 MDD Microwave Service Manual...

Page 2: ...Inc assumes no responsibility for any repairs made to Wolf appliances by anyone other than Certified Service Technicians The information and images are the copyright property of Wolf Appliance Inc an...

Page 3: ...idths Standard or flush inset application MICROWAVE FEATURES MICROWAVE RATING PLATES MODEL MDD30CM B TH HOUSEHOLD MICROWAVE OVEN NOT FOR COMMERCIAL USE Manufactured December 2015 120V AC 60Hz 13 5A Ma...

Page 4: ...let 2 Important Survey instruments that comply with the requirement for instrumentations as prescribed by the performance standard for microwave ovens must be used for testing Place the oven tray into...

Page 5: ...nternational Designation Product Size Model Unit Style Handle Style Product MDD Microwave Drop Down Door Size 24 24 inch wide unit 30 30 inch wide unit Model TE Transitional E Series TM Transitional M...

Page 6: ...on 1 6 826151 Revision A March 2016 Description Microwave Drop Down Door 24 Transitional E Series Stainless Steel Professional Handle MDD24TE S PH MDD30CM B TH Description Microwave Drop Down Door 30...

Page 7: ...onal E Series Stainless Steel Professional Handle Description Microwave Drop Down Door 30 Professional M Series Stainless Steel Professional Handle MDD30TM S TH MDD30TE S TH Description Microwave Drop...

Page 8: ...out age AUDIBLE SIGNAL An audible signal chimes with every touch and upon cook time and timer completion To eliminate signal Touch SETTINGS control panel display scrolls TOUCH DECREASE FOR SOUND OFF 1...

Page 9: ...times display scrolls CHANGE WEIGHT TO KGS TOUCH DECREASE 1 Touch DECREASE control panel display scrolls WEIGHT KGS TOUCH START 2 Touch START 3 KGS SET appears on the control panel display then the t...

Page 10: ...ST then use number pads to select desired food e g 3 for boneless poultry 1 Use number pads to enter weight 2 Touch START After a period of time microwave oven stops so food can be checked 3 Open door...

Page 11: ...power Turn food throughout the process to ensure even defrosting To Defrost manually Touch MANUAL DEFROST 1 Use number pads to enter desired time 2 Touch START 3 SENSOR REHEAT The sensor reheat featur...

Page 12: ...by touching ADD MINUTE Touch multiple times to increase cook time Each touch increases cook time by one minute This feature can not be used with sensor cooking settings POWER LEVEL The microwave oven...

Page 13: ...t stand for 3 minutes covered 4 Frozen Entree 8 oz 3 pounds Use for frozen convenience foods Remove package from outer wrapping and follow package directions for covering After cooking let stand for 1...

Page 14: ...or is closed Noise Filter is energized when the microwave oven is connected to a power source Interior light comes on when microwave oven door is open MANUAL COOKING Enter a power level if less than 1...

Page 15: ...ing switch must open their COM NO contacts first After that the COM NC contacts of the monitor switch can be closed When the microwave door is closed the COM NC contacts of the monitor switch open fir...

Page 16: ...to the microwave if the food in the microwave catchs fire Overheating occurs when cook time is set incorrectly or if the control unit fails Under normal operation the oven thermal cut out remains clos...

Page 17: ...repair 1 Replace the outer case 2 Reconnect the power supply 3 Check for microwave energy by placing a cup of cold water in the microwave and heating on high for two 4 minutes Confirm the water is hot...

Page 18: ...l rear cover 2 Remove the control rear cover 3 On the MDD24TE MDD30TE and the MDD30PE disconnect the 16 pin wiring harness 4 Use a T 10 Torx drive to extract the screws from the unit display 5 Disconn...

Page 19: ...nal and the white wire from the N terminal on the noise filter board 2 Disconnect the red wire from the RED terminal and the double white wire from the WHT terminal on the noise filter board 3 Use a T...

Page 20: ...choke cover seal from between the choke cover and the door panel 2 Remove the choke cover seal Choke Cover To remove the choke cover first remove the choke cover seal then See Figure 3 8 1 Use a putt...

Page 21: ...r assembly first remove the door panel then See Figure 3 11 1 Use a T 25 Torx drive to extract the handle screws 2 Remove the complete handle assembly Handle Assembly Complete To remove the complete h...

Page 22: ...nel then See Figure 3 13 1 Use a T 20 Torx drive to extract the screws from the door panel 2 Remove the hinge Outer Wrapper To remove the outer wrapper first uninstall the unit then See Figure 3 14 1...

Page 23: ...ide the power module up and disengage from the lower tabs 3 Disconnect the wire harnesses from the power module Bracket To remove the bracket first remove the power module then See Figure 3 15 1 Use a...

Page 24: ...r then See Figure 3 17 1 Disconnect the HV transformer primary side wires from the terminals 2 Disconnect the HV transformer secondary wires from the HV capacitor 3 Disconnect the HV transformer secon...

Page 25: ...vity To remove the TCO first remove the outer wrapper then See Figure 3 20 1 Disconnect the wires from the terminals of the TCO 2 Use a T 10 Torx drive to extract the screw from the TCO 3 Pull the TCO...

Page 26: ...the rear tab and remove the right air separator 5 Use a T 20 Torx drive to extract the screws from the upper cover 6 Remove the upper cover 7 Use a T 20 Security Torx drive to extract the fan motor c...

Page 27: ...plier to compress the tip of the wire retainers and push them out of the unit control support 10 Maneuver the unit control support around the wire harnesses and remove the unit control support 11 Dise...

Page 28: ...ninstall the microwave then See Figure 3 28 1 Place the microwave on it s back on a protected surface 2 Use a T 20 Security Torx drive to extract the screws from the bottom cover 3 Pull the bottom cov...

Page 29: ...nds after the oven is switched off Wait 60 seconds and then short circuit the connection of the high voltage capacitor the connecting lead of the high voltage rectifier against the microwave chassis w...

Page 30: ...es not display when power cord is plugged into wall outlet CONDITION Oven does not operate as expected when STOP bu on is touched Oven LED lamp does not illuminate when door is opened Oven does not st...

Page 31: ...e a watch to time 60 seconds after the microwave starts to emit microwave energy This is about 5 sec 4 onds after start is pressed Remove the measuring cup and measure the water temperature Stir the t...

Page 32: ...olate the HV rectifier assembly from the HV circuit 2 Measure the resistance between terminals B and C on the HV rectifier 3 note the reading Reverse the meter leads and measure the resistance between...

Page 33: ...to NO terminals will show zero resistance when the plunger is 3 depressed and infinite resistance when plunger is released COM to NC terminals will show infinite resistance when the plunger is 4 depr...

Page 34: ...e switch es and 20 amp fuse 3 Perform 4R Checks 4 2 4 Perform 3E Checks page 4 2 1 Remove wires from noise filter board terminals 2 Use an Ohm meter to measure the resistance between 3 a N and L read...

Page 35: ...tage was observed but the motor did not rotate replace the motor 9 If no line voltage was observed 10 a Confirm resistance on motor windings b Check relays fuses and switches Use this method to test a...

Page 36: ...perly cooked If the sensor does not detect the vapor of the food ERROR will appear and 9 the oven will shut off The microwave should be fully assembled 1 The microwave must be plugged in for at least...

Page 37: ...Ohms If the turntable motor high voltage transformer or fan motor is not operating and live voltage test shows no voltage at the component test the power to the control board Perform 3E Checks page 4...

Page 38: ...5 C non resettable 15 ohms 12 15 kOhms 3 5 Volts 350 MA 97 F 2300 VAC Abbreviations TCO Thermal Cut out VAC Volts Alternating Current HV High Voltage C Celsius MA megaamps F microfarad Hz Hertz MHz Me...

Page 39: ...ASSEMBLY RY2 RY1 B1 B3 120 127V 60HZ DOOR SENSING SWITCH METAL TOUCH UNIT RIGHT METAL TOUCH UNIT LEFT DISPLAY UNIT CONTROL UNIT CN301 CN201 4 3 2 1 4 3 2 1 5V 12V FUSE 0 8A CN101 CN A 1 3 A4 A1 N L SW...

Page 40: ...ASSEMBLY RY2 RY1 B1 B3 120 127V 60HZ DOOR SENSING SWITCH TOUCH KEY RIGHT TOUCH KEY LEFT DISPLAY UNIT CONTROL UNIT CN301 CN201 4 3 2 1 4 3 2 1 5V 12V FUSE 0 8A CN101 CN A 1 3 A4 A1 N L SWITCHING POWER...

Page 41: ...MOTOR H V RECTIFIER H V CAPACITOR RED ORANGE BLUE WHITE RED MAGNETRON CN F CN B RY1 RY2 ORANGE ORANGE RED WHITE WHITE GRAY GREEN BLACK CN 301 CN A CN C MAGNETRON THERMAL CUT OUT LED LIGHT ORANGE ORAN...

Page 42: ...H V RECTIFIER H V CAPACITOR RED ORANGE BLUE WHITE RED MAGNETRON CN F CN B RY1 RY2 ORANGE ORANGE RED WHITE WHITE GRAY GREEN BLACK CN 301 CN A CN C MAGNETRON THERMAL CUT OUT LED LIGHT ORANGE ORANGE BLA...

Page 43: ...1Q IC100 P11_1 P11_0 P7_7 P7_6 P7_5 P7_4 P7_3 P7_2 P7_1 P7_0 P4_7 P4_6 P4_5 P4_4 P4_3 P4_2 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 INTO TXD RXD CLK VL4 C RSET P12_3 VL3 VL2 VL1 P0_0 P0_1 P0_2...

Page 44: ...65 64 63 62 61 VL4 CLK P12_2 P12_3 VL3 VL2 VL1 P0_0 P0_1 P0_2 P0_3 P0_4 P0_5 P0_6 P0_7 SEG40 SEG39 SEG38 SEG37 SEG36 SEG 1 1 SEG 2 2 SEG 3 3 SEG 4 4 SEG 5 5 SEG 6 6 SEG 7 7 SEG 8 8 SEG 9 9 SEG 1010 SE...

Page 45: ...EG 3030 SEG 3131 SEG 3232 SEG 3333 SEG 3434 SEG 3535 SEG 3636 SEG 3737 SEG 3838 SEG 3939 SEG 4040 COM 4 41 COM 3 42 COM 2 43 COM 1 44 LCD1 R601 4 7K R603 240 470 R604 240 470 R602 200 470 LCD BACK LIG...

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