Maytag Skybox MBV1976AAP Istruzioni per il montaggio

Skybox

Personal Vending

Machine

This Base Manual covers general information

Refer to individual Technical Sheet

for information on specific models

This manual includes, but is

not limited to the following:

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.

16022983

March2004

Maytag

MBV1976AAP

MBV1976AAB

MBS1976AAP

MBS1976AAB

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. 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,

testinginstruments andtheappropriate service information. IT IS THE TECHNICIANS RESPONSIBILITY TO

REVIEW ALL APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS.

!WARNING

To avoid risk of severe personal injury or death, disconnect power before working/servicing on appliance to avoid

electrical shock.

To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this

product. For further assistance, please contact:

Customer Service Support Center

CAIR Center

Web Site Telephone Number

WWW.AMANA.COM ............................................... 1-800-843-0304

WWW.JENNAIR.COM ............................................ 1-800-536-6247

WWW.MAYTAG.COM............................................. 1-800-688-9900

CAIR Center in Canada.......................................... 1-800-688-2002

Amana Canada Product .......................................... 1-866-587-2002

Recognize Safety Symbols, Words, and Labels

DANGER

DANGER—Immediate hazards which WILL result in severe personal injury or death.

WARNING

WARNING—Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION

CAUTION—Hazards or unsafe practices which COULD result in minor personal injury, product or property

damage.

Important Information

Important Information.................................................... 2

Troubleshooting

DisableSwitches and DoorTest................................. 4

BinMechanism (Motors, Chuteswitches/doorsand.....

Flipperdoor................................................................ 5

ProductOut (Home Sensor) andAnti-Jam.................. 6

LowProduct Switches ............................................... 7

DispenseTest ............................................................ 7

DisassemblyProcedures

DoorRemoval ............................................................ 8

DispensingAssembly ................................................ 8

Temperature Control ................................................... 8

RibbonConnector ...................................................... 8

Selection Buttons ...................................................... 9

CirculatingFan........................................................... 9

Ballast and Light Bulb ................................................ 9

WiringDiagram ............................................................10

AppendixA

Owner’s Manual........ ........................................A-2

AppendixB

SkybaseAssembly Manual ................................. B-2

Table of Contents

Troubleshooting !WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

DISABLE SWITCHES and DOOR TEST

1. Apply power to the SKYBOX.

2. Verify that the door lights work properly, they can be

turned on and off.

Possible causes malfunction:

· Cable between the door and cabinet missing, not

wired correctly, or not plugged in fully.

· Light switch mounted upside-down.

· Incorrect wiring, wires crossed from each starter.

· Wire not pushed into socket or contamination on

wire.

· Starter or lamp missing or not installed properly.

· 120VAC wiring error.

· 120VAC not working at test outlet.

3. Move all DISABLE switches down (turn OFF the

bins).

4. Hold the MAIN DOOR switch closed, leaving the door

open.

5. All 4 LED on the door should be ON. If not, fail.

Possible causes:

· The LED that is OFF might have the DISABLE

switch assembled upside down, along with a bad

LOW PRODUCT switch circuit.

· If all of the LED flash slowly, there is a bad

connection between the door and the MAIN PCB.

(Loss of communications between the MAIN and

FPP PCBs).

· If the LED are all OFF, there is a bad connection

between the door and the MAIN PCB (no power).

· If the LED are all OFF, there is a bad connection

between the bin set and the MAIN PCB (ribbon

cable unplugged or bad).

· If the LED are all OFF, there is no power to the

MAIN PCB: verify that the 12VAC transformer is

connected to 120VAC between the bin set and the

MAIN PCB (ribbon cable unplugged). There are 2

LED on the MAIN PCB. The top LED indicates

communications TO the FPP (located in the door);

the bottom LED indicates communications FROM

the FPP.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

6. Push SELECT pushbutton 1. Only LED1 should turn

off while the pushbutton is pushed. If not, fail.

· If multiple LED turn OFF, there is a problem with

the door electronics.

· If all 4 LED fast flash only while the SELECT

pushbutton is pushed, the FLIPPER DOOR is

open (or other problem in FLIPPER door sensor)

· If the wrong LED turns OFF, there is a problem

with the door electronics.

· If no LED turn OFF, there is a problem with the

door electronics.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

7. Push SELECT pushbutton 2. Only LED 2 should turn

off while the pushbutton is pushed. If not, fail.

· If multiple LED turn OFF, there is a problem with

the door electronics.

· If all 4 LED fast flash only while the SELECT

pushbutton is pushed, the FLIPPER DOOR is

open (or other problem in FLIPPER door sensor)

· If the wrong LED turns OFF, there is a problem

with the door electronics.

· If no LED turn OFF, there is a problem with the

door electronics.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

8. Push SELECT pushbutton 3. Only LED3 should turn

off while the pushbutton is pushed. If not, fail.

· If multiple LED turn OFF, there is a problem with

the door electronics.

· If all 4 LED fast flash only while the SELECT

pushbutton is pushed, the FLIPPER DOOR is

open (or other problem in FLIPPER door sensor).

· If the wrong LED turns OFF, there is a problem

with the door electronics.

· If no LED turn OFF, there is a problem with the

door electronics.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

!WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Troubleshooting

9. Push SELECT pushbutton 4. Only LED 4 should turn

off while the pushbutton is pushed. If not, fail.

· If multiple LED turn OFF, there is a problem with

the door electronics.

· If all 4 LED fast flash only while the SELECT

pushbutton is pushed, the FLIPPER DOOR is

open (or other problem in FLIPPER door sensor)

· If the wrong LED turns OFF, there is a problem

with the door electronics.

· If no LED turn OFF, there is a problem with the

door electronics.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB.

BIN MECHANISM (MOTORS, CHUTE

switches/doors, and FLIPPER door)

1. Release the MAIN DOOR switch.

2. Move all DISABLE switches up (turn ON the bins).

3. Hold the MAIN DOOR switch closed, leaving the door

open.

4. Push SELECT pushbutton 1.

a.MOTOR 1 should turn at a normal speed and LED1

should be flashing slowly. If not, fail.

· The DISABLE switch circuit for that bin might be

bad.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

· If the MOTOR runs slowly or not at allAND all 4

LED start flashing fast after 3 seconds, the

CHUTE sensor is broken on that bin (CHUTE

plate not returning to the proper resting position,

magnet missing or installed incorrectly, HOME/

CHUTE PCB not working or not plugged into the

CONNECTOR PCB).

b. Quickly trip the CHUTE plate #1. The motor

should stop or move very slowly. If not, fail.

· The CHUTE door sensor is not working properly.

Check for solder bridges and bad wiring on the

HOME/CHUTE PCB, CONNECTOR PCB, or

MAIN PCB.

c. Quickly trip the FLIPPER door. Verify that LED1

stops flashing slowly and stays ON. If not, fail.

· The FLIPPER door sensor is not working properly:

FLIPPER door not returning to the proper resting

position, magnet missing or installed incorrectly,

error in installation of FLIPPER PCB.

5. Push SELECT pushbutton 2.

a. Motor 2 should turn at a normal speed and LED 2

should be flashing slowly. If not, fail.

· The DISABLE switch circuit for that bin might be

bad.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

· If the MOTOR runs slowly or not at allAND all 4

LED start flashing fast after 3 seconds, the

CHUTE sensor is broken on that bin (CHUTE

plate not returning to the proper resting position,

magnet missing or installed incorrectly, HOME/

CHUTE PCB not working or not plugged into the

CONNECTOR PCB).

b. Quickly trip the CHUTE plate #2. The motor

should stop or move very slowly. If not, fail.

· The CHUTE door sensor is not working properly.

Check for solder bridges and bad wiring on the

HOME/CHUTE PCB, CONNECTOR PCB, or

MAIN PCB.

c. Quickly trip the FLIPPER door. Verify that LED 2

stops flashing slowly and stays ON. If not, fail.

· The FLIPPER door sensor is not working properly:

FLIPPER door not returning to the proper resting

position, magnet missing or installed incorrectly,

error in installation of FLIPPER PCB.

6. Push SELECT pushbutton 3.

a. Motor 3 should turn at a normal speed and LED 3

should be flashing slowly. If not, fail.

· The DISABLE switch circuit for that bin might be

bad.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

· If the MOTOR runs slowly or not at allAND all 4

LED start flashing fast after 3 seconds, the

CHUTE sensor is broken on that bin (CHUTE

plate not returning to the proper resting position,

magnet missing or installed incorrectly, HOME/

CHUTE PCB not working or not plugged into the

CONNECTOR PCB).

b.Quickly trip the CHUTE plate #3. The motor should

stop or move very slowly. If not, fail.

· The CHUTE door sensor is not working properly.

Check for solder bridges and bad wiring on the

HOME/CHUTE PCB, CONNECTOR PCB, or

MAIN PCB.

Troubleshooting !WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

c. Quickly trip the FLIPPER door. Verify that LED 3

stops flashing slowly and stays ON. If not, fail.

· The FLIPPER door sensor is not working properly:

FLIPPER door not returning to the proper resting

position, magnet missing or installed incorrectly,

error in installation of FLIPPER PCB.

7. Push SELECT pushbutton 4.

a. Motor 4 should turn at a normal speed and LED 4

should be flashing slowly. If not, fail.

· The DISABLE switch circuit for that bin might be

bad.

· MAIN DOOR switch circuit not wired correctly:

wrong connection at switch or connector not

plugged into the MAIN PCB. When the MAIN

DOOR switch is first held closed, the LED should

flicker off for a very brief time.

· If the MOTOR runs slowly or not at allAND all 4

LED start flashing fast after 3 seconds, the

CHUTE sensor is broken on that bin (CHUTE

plate not returning to the proper resting position,

magnet missing or installed incorrectly, HOME/

CHUTE PCB not working or not plugged into the

CONNECTOR PCB).

b. Quickly trip the CHUTE plate #4. The motor

should stop or move very slowly. If not, fail.

· The CHUTE door sensor is not working properly.

Check for solder bridges and bad wiring on the

HOME/CHUTE PCB, CONNECTOR PCB, or

MAIN PCB.

c. Quickly trip the FLIPPER door. Verify that LED4

stops flashing slowly and stays ON. If not, fail.

· The FLIPPER door sensor is not working properly:

FLIPPER door not returning to the proper resting

position, magnet missing or installed incorrectly,

error in installation of FLIPPER PCB.

PRODUCT OUT (HOME SENSOR) and ANTI-

JAM

1. Hold the MAIN DOOR switch closed, leaving the door

open.

2. Push SELECT pushbutton 1.

3. Allow MOTOR 1 to run until it stops (between 6 and

10 seconds). The dispensing cup should now be at

the home position (open to accept product). If not,

fail.

· The HOME sensor is not working on that bin:

magnet located on dispensing cup end missing or

installed wrong, CHUTE-HOME PCB (SENMN)

broken, problem on CONNECTOR PCB (located

on back of bin set), or ribbon cable problem.

· The HOME sensor input for that bin on the MAIN

PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem

4. Push SELECT pushbutton 2. Watch for proper anti-

jam mechanism operation: the back plate must flip up

then down while the motor is moving. If not, fail.

· spring not working

· Cam mechanism not installed correctly.

5. Allow MOTOR 2 to run until it stops (between 6 and

10 seconds). The dispensing cup should now be at

the home position (open to accept product). If not,

fail.

· The HOME sensor is not working on that bin:

magnet located on dispensing cup end missing or

installed wrong, CHUTE-HOME PCB (SENMN)

broken, problem on CONNECTOR PCB (located

on back of bin set), or ribbon cable problem.

· The HOME sensor input for that bin on the MAIN

PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem.

6. Push SELECT pushbutton 3. Watch for proper anti-

jam mechanism operation: the back plate must flip up

then down while the motor is moving. If not, fail.

· spring not working

· Cam mechanism not installed correctly.

7. Allow MOTOR 3 to run until it stops (between 6 and

10 seconds). The dispensing cup should now be at

the home position (open to accept product). If not,

fail.

· The HOME sensor is not working on that bin:

magnet located on dispensing cup end missing or

installed wrong, CHUTE-HOME PCB (SENMN)

broken, problem on CONNECTOR PCB (located

on back of bin set), or ribbon cable problem.

· The HOME sensor input for that bin on the MAIN

PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem

8. Push SELECT pushbutton 4. Watch for proper anti-

jam mechanism operation: the back plate must flip up

then down while the motor is moving. If not, fail.

· spring not working

· Cam mechanism not installed correctly.

9. Allow MOTOR 4 to run until it stops (between 6 and

10 seconds). The dispensing cup should now be at

the home position (open to accept product). If not,

fail.

· The HOME sensor is not working on that bin:

magnet located on dispensing cup end missing or

installed wrong, CHUTE-HOME PCB (SENMN)

broken, problem on CONNECTOR PCB (located

on back of bin set), or ribbon cable problem.

· The HOME sensor input for that bin on the MAIN

PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem

!WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Troubleshooting

LOW PRODUCT SWITCHES

1. Release the MAIN DOOR switch.

2. Press the LOW PRODUCT plate for bin 1. Hold the

MAIN DOOR switch closed, leaving the door open.

Only LED1 should turn off. If not, fail.

· Mis-wired LOW PRODUCT harness and/or

switch.

· Mis-aligned LOW PRODUCT plate.

· The LOW PRODUCT input for that switch on the

MAIN PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem.

3. Release the MAIN DOOR switch.

4. Press the LOW PRODUCT plate for bin 2. Hold the

MAIN DOOR switch closed, leaving the door open.

Only LED2 should turn off. If not, fail.

· Mis-wired LOW PRODUCT harness and/or

switch.

· Mis-aligned LOW PRODUCT plate.

· The LOW PRODUCT input for that switch on the

MAIN PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem.

5. Release the MAIN DOOR switch.

· Mis-wired LOW PRODUCT harness and/or

switch.

· Mis-aligned LOW PRODUCT plate.

· The LOW PRODUCT input for that switch on the

MAIN PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem

6. Press the LOW PRODUCT plate for bin 3. Hold the

MAIN DOOR switch closed, leaving the door open.

Only LED 3 should turn off. If not, fail.

7. Release the MAIN DOOR switch.

8. Press the LOW PRODUCT plate for bin 4. Hold the

MAIN DOOR switch closed, leaving the door open.

Only LED 4 should turn off. If not, fail.

· Mis-wired LOW PRODUCT harness and/or

switch.

· Mis-aligned LOW PRODUCT plate.

· The LOW PRODUCT input for that switch on the

MAIN PCB is bad: short, missing resistor, etc.

· CONNECTOR PCB or ribbon cable problem.

DISPENSE TEST

· Place 1 product into each of the 4 bins. Close the

MAIN DOOR. Verify that each bin dispenses the

product properly through the FLIPPER door. If

not, fail.

TEST COMPLETE

Disassembly Procedures

!WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Door Removal

1. Make sure the main unit is OFF and the powercord is

unplugged.

2. Unplug the door wire harness from the lower right

corner of the door and the lower left corner of the

personal beverage vendor.

3. Open the door wider than a 90° angle.

4. Lift the door up, releasing the door hinges from the

hinge posts.

DispensingAssembly

1. Remove Door (see Door removal procedure)

2. Remove Sling assembly by unhooking two hooks

from sling at top of chute opening and removing from

velcro from left side of cabinet.

3. Remove screws holding dispenser assembly in place,

5 screws on front of dispensing assembly and 4 on

left hand side of dispenser.

4. Slide dispenser assembly out and unplug ribbon

connector from dispenser assembly.

Temperature Control

1. Remove single screw at bottom of temperature

control.

2. Slide down temperature control to expose wiring and

sensing bulb.

3. Disconnect wires from temperature control. Note

location of wires when removing temperature control.

4. Slide sensing capilary tube out of sleeve while

removing temperature control.

5. Reverse procedure to reassemble.

RibbonConnector

1. Remove dispenser assembly (see dispenser

assembly removal).

2. Unplug ribbon connector from dispenser assembly.

3. Remove plug seal from inside back of cabinet holding

connector in place.

4. Remove machine compartment screws from back

side of machine compartment.Remove machine

compartment cover.

5. Remove cover from main board by removing screws.

6. Unplug ribbon connector from board and slide it

through hole in cabinet.

7. Reverse procedure to reassemble.

Disassembly Procedures

!WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test

procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Selection Buttons

1. Grasp the bottom of the selection button and pull

toward you.

2. While the selection button is pulled out, pull down on

the selection button firmly to release selection button

from cabinet.

3. Reverse procedure to reassemble.

Circulating Fan

1. Remove dispenser assembly (see dispenser

assembly removal).

2. Remove circulating fan screws and unplug from

cabinet PCB.

3. Remove circulating fan.

Note: Circulating fan must be installed so the airflow

draws air from the dispenser assembly.

4. Reverse procedure to reassemble.

Ballast and Light Bulb

1. Remove top cover from cabinet by lifting it off of unit.

2. Remove plexiglass cover by lifting it from the slot at

the front of the cabinet to expose ballast or light bulb.

3. Reverse procedure to reassemble.

To avoid risk of electrical shock, personal injury, or death, disconnect power to freezer before servicing, unless

testing requires it. Wires removed during disassembly must be replaced on proper terminals to insure correct

grounding and polarization.

!WARNING

CAUTION

High Voltage

Wiring Diagram and Schematic

MBV1976AAP

MBV1976AAB

LINE

NEUTRAL

EARTH GROUNDGREENEARTH GROUND

LINEBLACK

NEUTRALWHIT E

MOTOR+3

MOTOR+4

MOTOR-

COMMON

/M AI N_ CL O S E D _ B I N

/DISABLE4

/DISABLE3

/DISABLE2

/DISABLE1

/LOW1

/LOW2

/LOW3

/LOW4

MOTOR+3

MOTOR+4

MOTOR-

COMM ON

/MAIN_CLOSED_BIN

/DISABLE4

/DISABLE3

/DISABLE2

/DISABLE1

/LOW1

/LOW2

/LOW3

/LOW4

/HOME1

/CHUTE1

+5V_SWITCHED

/HOME2

/CHUTE2

COMMON

/HOME3

/CHUTE3

/HOME4

/CHUTE4

COMMON

MOTOR+1

MOTOR+2

REFRIGERATOR

CHAMBER

/HOME1

/ CHUTE1

+5V_SWI TCHED

/HOME2

/ CHUTE2

COMMON

/HOME3

/ CHUTE3

/HOME4

/ CHUTE4

COMMON

MOTOR+1

MOTOR+2

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