Corrective ActionProbable CauseProblem
Check control power circuit breaker is on.No AC power to dispenser or to
iGEM board
1Sale and UPD's
are out
Check dispenser power switch is on.
Check for AC input voltage at J8 on dispenser
connection board.
If present, check connections on the board, re-
place board.
If not present check in J-box. If not present in J-
box, problem is in site wiring or inside the building.
If present in J-box, problem is in internal dispenser
wiring/connections.
Check LED indicators on computer for DC power
and Heartbeat.
If all are not On, see Probable Cause 2. If all are
On, check 24V power cable and data cable to
sales display controller board.
All LEDs should be On. DS6 is 24V input LED.
Check for 24 VDC input at computer J1.
No DC power to computer2
If present, replace computer.
If not present at J1, check DC output J41 on dis-
penser connection board. If present at J41, prob-
lem is wiring or connectors.
If not present at J41, check connection board J10
AC out to power supply. If no voltage present, re-
place connection board.
Check J36 DC in from power supply. If present,
replace connection board.
Check power supply board J2 DC output, J1 AC
input, replace power supply as necessary.
For Sales display, check 5V LED is On on the
controller board and 24V at J10/J11.
No power to display controller
boards or defective display
Only Sales Display
is out or all UPD’s
are out
If present, replace sale display/controller board
assembly.
If not present, check DC out from dispenser con-
nection board J23 and check cable. Also, if side
2 of dispenser, check 24V at side 1 sales display
controller board J10/J11.
Replace display assembly.
For all UPD’s out, check 5V LED is On on the
controller board. If not, check/replace cable from
sales display controller board or check sales dis-
play as described above. If LED is On, replace
UPD controller board.
WM048523 Rev 08 01/2019 177
9 Error Codes, Problem Symptoms and Solutions - NA
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