Service Manual

24
2. Opti-Serve Model
CB K7 connector pins #1 (W/R) or (P), #2 (W) or (Y), #3(W/BK), and #5 (DBU) or
(W/O): Before engaging the ice dispense Opti-Serve sensor, check for the correct
VDC from the locations given in the "Disengaged" column in the table below. If the
VDC is different than in the table, replace CB. If the VDC reading is correct, engage
the Opti-Serve sensor. "ICE" LED turns on. If not, conrm position of dispense mode
switch and that the portion and continuous VDC matches the "Engaged" column in
the table below. If not, check the dispense mode switch continuity. If open, replace.
If dispense mode switch is closed (portion or continuous), replace the Opti-Serve
sensor. If the VDC matches the "Engaged" column below and the "ICE" LED does
not turn on, replace CB.
Note: "AM" LED turns on .6 sec. for every 12 sec. of cumulative dispense time.
5VDC CB K7 Connector
Component Pin # (Wire Color) To CB VDC Ground Disengaged Engaged
5VDC Power Supply #3 (W/BK)
To
CB K4 pin #1 (pin
closest to CB black
K3)
5VDC 5VDC
Sensor Ground #1 (W/R) or (P) 0VDC 0VDC
Continuous Position Signal #2 (W) or (Y)
0VDC 5VDC
Portion Position Signal #5 (DBU) or (W/O)
0VDC 5VDC
Fig. 6
Red Test Lead
Black Test Lead
Multimeter
5VDC
Control Board K7 Connector
Ice Dispense Signal
#5 (DBU) or (W/O) (portion)
Ice Dispense Output
#3 (W/BK)
Ice Dispense Signal
#2 (W) or (Y) (continuous)
Ice Dispense GND
#1 (W/R) or (P)
Red test lead to
CB K4 pin #1
(pin closest to CB
black K3)