Cornelius Quest NT 4000, Руководство по обслуживанию

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Quest Service Manual
© 2004-2014, Cornelius Inc. - 15 - Publication Number: 720901117SER
• Defective dispense control board
(Push button or portion control) • Test and replace if necessary
Machine continues to
dispense after dis-
pense button is
released or dispenses
without operator input
• Push button or portion control pad
stuck in on position • Disconnect the wire harness from
the rear of the portion control and
close the door. If unit does not
dispense on its own the dispense
control board is bad (stuck on)
• Relay on voltage regulator board
(VRB) stuck on. • Disconnect the 4-wire harness
from the lower right corner of the
VRB. If the unit continues to dis-
pense on its own the VRB is
defective (relay stuck on)
PROBLEM PROBABLE CAUSE REMEDY