Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagrams
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- A. Control Board Layout
- B. LED Lights and Audible Alarm Safeties
- C. Controls and Adjustments
- 1. Default Dip Switch Settings
- 2. Infrared Sensor Shutdown Delay (S1 dip switch 1, 2, 3)
- 3. Drain Frequency Control (S1 dip switch 4)
- 4. Continuous Dispensing Timer (S1 dip switch 5 & 6)
- 5. Bin Control Selector (S1 dip switch 7)
- 6. Bin Control Shutdown Delay, Agitation, and Ice Purge Timer (S1 dip switch 8)
- 7. Bin Control Shutdown Delay (S1 dip switch 9)
- 8. Factory Use (S1 Dip Switch 10)
- D. Switches
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
22
Fig. 4
Red Test Lead
Black Test Lead
Multimeter
5VDC
Control Board K7 Connector
Water Dispense Signal
#8 (P) or (W)
2. Opti-Serve Model
CB K7 connector pins #7 (R), #8 (P) or (W), and #9(BK) or (P):Before engaging
the water 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 is correct, engage the Opti-Serve sensor. "WTRDP"
LED turns on. If not, conrm that the water dispense signal VDC matches the
"Engaged" column in the table below. If not, replace the Opti-Serve sensor. If the
VDC matches the "Engaged" column below and the "WTRDP" LED does not turn on,
replace CB.
5VDC CB K7 Connector
Component Pin # (Wire Color) To CB VDC Ground Disengaged Engaged
Sensor Ground #7 (R)
To
CB K4 pin #1 (pin
closest to CB black
K3)
0VDC 0VDC
Water Dispense Signal #8 (P) or (W) 0VDC 5VDC
5VDC Power Supply #9 (BK) or (P) 5VDC 5VDC
Water Dispense GND
#7 (R)
Water Dispense Output
#9 (BK) or (P)
Red test lead to
CB K4 pin #1
(pin closest to CB
black K3)