Maytag Skybox MBV1976AAP Assembly instructions

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

2 16022983 Rev.0 ©2004 Maytag Appliances Company
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

©2004 Maytag Appliances Company 16022983 Rev.0 3
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.
4 16022983 Rev. 0 ©2004 Maytag Appliances Company
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.
©2004 Maytag Appliances Company 16022983 Rev. 0 5
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.
6 16022983 Rev. 0 ©2004 Maytag Appliances Company
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.
©2004 Maytag Appliances Company 16022983 Rev. 0 7
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.
816022983 Rev. 0 ©2004 Maytag Appliances Company
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.
©2004 Maytag Appliances Company 16022983 Rev. 0 9
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.

10 16022983 Rev. 0 ©2004 Maytag Appliances Company
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