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© 2000 Maytag Appliances Sales Company

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Section 9.     Dryer Controls Overview

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Description 

Connector 
Pin  Num 

Connector 
Pin Num 

Voltage 

Comments 

Heater Relay  Internal 
Output 

P1 

BB1(1) 

120VAC 

 

LI Board (input) 

BB1(1) 

BB2(3) 

120VAC 

Door must be closed. 

Motor 
(input) 

BB1(2) 

BB2(3) 

120VAC 

Door must be closed 

Neutral (input) 

BB2(2) 

BB1(1) 

120VAC 

 

Door Sense 

BB2(3) 

BB1(1) 

120VAC 

Door must be open 

Thermistor 

J4(1) 

J4(2) 

5VDC 

NTC 
70 F = 10K ohms 
150 F = 1754 ohms 

Sensor Bar 

J4(3) 

J4(4) 

24VDC 

 

MDE/MDG7500, MDE/MDG9800

Summary of Contents for 1999 Sloped-Front

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Page 7: ...UITY CHECKS MDE MDG6800 MDG5500 9 14 SERVICE MODE MDE MDG7500 MDE MDG9800 9 15 USER INTERFACE MDE MDG7500 MDE MDG9800 9 16 MEMBRANE PAD CHECK MDE MDG7500 MDE MDG9800 9 16 SYSTEM CHECK MDE MDG7500 MDE MDG9800 9 16 DIAGNOSTIC HELP CODES MDE MDG7500 MDE MDG9800 9 16 MEMBRANE PAD CONTINUITY CHECKS MDE MDG7500 MDE MDG9800 9 17 SECTION 10 ELECTRICAL SCHEMATICS 10 1 MDE3000 10 1 MDG3000 10 2 MDE4000AZ MD...

Page 8: ... 2000 Maytag Appliances Sales Company vi Contents MDE6200 Canada 10 26 MDE6800 10 27 MDG6800 10 28 MDE9800 10 29 MDG9800 10 30 ...

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Page 15: ...ag Appliances Sales Company Section 1 General Information 1 7 MDE DG5500 Facia LED Screen MDE DG7500 Facia LCD Screen PRODUCT SPECIFICATIONS Same specifications as outlined in service manual part number 16009968 ...

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Page 23: ...2 1 BB2 3 120VAC Door must be closed Electric Dryer Only Door Sense BB2 3 BB1 2 120VAC Door must be closed 24 VDC Input BB2 4 BB1 2 24VDC Thermistor J4 1 J4 2 5VDC NTC 70o F 10K ohms 150o F 1754 ohms Sensor Bar J4 3 J4 4 24VDC Description Connector Pin Number Connector Pin Number Voltage Comments Heater Relay Internal Output P1 BB1 1 120VAC L1 Board Input BB1 1 BB2 3 120VAC Door must be closed Mot...

Page 24: ...ard and locating the corresponding switch pin numbers in the ribbon harness LCD Dryer LED Dryer Membrane Pad Pin Number Pin Number sensor dry J7 12 J7 13 time dry J7 11 J7 13 time J7 10 J7 13 time J7 9 J7 13 Dry Temp J7 11 J7 14 Dry Temp v J7 10 J7 14 Dryness J712 J7 14 Dryness J7 9 J7 14 wrinkle release J7 11 J7 15 press care J7 9 J7 15 air fluff J710 J7 15 start pause J7 11 J716 signal J7 12 J7 ...

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Page 31: ... Grasp the top of the console and gently rock the top of the console forward away from the rear console back Note the hooked tabs on bottom of the console which engage the slots in the top cover Warning Always shut off electrical power to the dryer before beginning any Figure 4 8 5 For reinstallation reverse the aforementioned steps MICROPROCESSOR BOARD REMOVAL 1 Disconnect power to the dryer 2 Re...

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Page 58: ...pt illumination of the touch screen panel While in advertising mode the display will cycle through eleven screens If the touch screen or any key except off is pressed the advertising sequence will be interrupted and the control will go to the Interactive State When this occurs the user is able to navigate through the control as normal including setting favorites setting preferences etc but the mac...

Page 59: ...ing table lists the various tests available while in the Service Mode which can be accessed by pressing the following keys Press Keys Special Test Function wrinkle release Diagnostic Codes dryer temp Sequences up the help diagnostic code list dryer temp v Sequences down the help diagnostic code list time Displays Software Revision Number very dry View current cycle temperature Co start pause Start...

Page 60: ...nd outputs to be controlled and viewed by the technician by pressing individual keys If no activity is seen for 5 minutes after a key is depressed the control will reset back to the normal mode If no further activity is seen after an additional 5 minutes the washer will turn off The following table lists the various functions based upon on keys being de pressed Membrane Pad Check While in system c...

Page 61: ...h screen The service technician is prompted to Touch the four corners and center of the touch screen in any order When each area is pressed the display will reverse image If all areas are sensed the control will display Touch screen test passed If any area s is not sensed within 5 seconds the technician will be prompted to Touch the area s not highlighted If the area can still not be sensed within...

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Page 64: ...c and help codes Time v 13 Key or Time 15 Key Display revision number Sensor Dry Level 13 Key or Very Dry 15 Key View current cycle temperature in Celsius Key Press Special Test Function Start Pause Start or pause cycle running but remain in diagnostic mode System Check Mode While in Service Mode pressing the Air Fluff and Signal 13 Key Membrane or Air Fluff and Signal 15 Key Membrane keys for 3 s...

Page 65: ...stic Codes available 00 will be displayed for the Diagnostic Code There will be no multiple occurrences of either a diagnostic code or help code generated in the same cycle reported on the list But if the same code occurs in repeated cycles it will be registered Clearing Diagnostic Codes To clear the diagnostic code list press Air Fluff and Wrinkle Release 13 Key or Air Fluff and Wrinkle Release 1...

Page 66: ...Sensor Dry Level 13 Key Very Dry 15 Key J7 12 J7 14 Damp Dry 15 Key J7 19 J7 14 Wrinkle Release J7 11 J7 15 Wrinkle Prevent J7 9 J7 15 Air Fluff J7 10 J7 15 Start Pause J7 11 J7 16 Signal v 13 Key Signal 15 Key J7 12 J7 15 Off J7 9 J7 16 Signal 13 Key Signal 15 Key J7 12 J7 16 Description Connector Pin Num Connector Pin Num Voltage Comments Heater Relay Internal Output P1 BB1 1 120VAC LI Board inp...

Page 67: ...middle of any dry cycle While in the Service Mode the Technician can start special diagnostic tests such as a System Check Mode Membrane Pad Check Display Software version number and display diagnostic help code listings Removing A Favorite Cycle If the consumer wants a favorite cycle removed see below Enter Service Mode Press Help and Back Keys for 3 seconds or until a beep is heard Exit Service ...

Page 68: ...will shut down the machine If all keys are pressed Membrane switch test passed will be displayed If any key s are not pressed within 5 seconds the user will be prompted to Touch the key s that are not highlighted If key s again are not pressed within 5 seconds the display will show which key s failed System Check Cycle Not Running System checks can be performed whether the dryer is in a dry cycle ...

Page 69: ...ble motor transistor error If either motor transistor is seen open or shorted during startup Check for Loose connections in motor circuit Run System Check Mode and check the motor relay function If relay functions disregard the diagnostic code If relay does not function replace machine control board 5 Not Used 6 Non Volatile Memory Problem Detected with integrity of parameters stored in EEPROM mem...

Page 70: ...ments Heater Relay Internal Output P1 BB1 1 120VAC LI Board input BB1 1 BB2 3 120VAC Door must be closed Motor input BB1 2 BB2 3 120VAC Door must be closed Neutral input BB2 2 BB1 1 120VAC Door Sense BB2 3 BB1 1 120VAC Door must be open Thermistor J4 1 J4 2 5VDC NTC 70 F 10K ohms 150 F 1754 ohms Sensor Bar J4 3 J4 4 24VDC MDE MDG7500 MDE MDG9800 ...

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Page 98: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 27 MDE6800 ...

Page 99: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 28 MDG6800 ...

Page 100: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 29 MDE9800 ...

Page 101: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 30 MDG9800 ...

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