Hoshizaki dcm-75ibah service manual 5VDC Power Supply #3 W/BK

i. Opti-ServeModel–"ICE" and "AM" LEDs are on: 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, confirm 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		5VDC	5VDC
VDC Sensor Ground	#1 (W/R)		Red K4 pin closest	0VDC	0VDC
Continuous Signal	#2 (W)		to black K3	0VDC	5VDC
Portion Signal	#5 (W/O)			0VDC	5VDC

Red positive test lead to red K4 connector pin closest

to black K3 connector

Red Positive Test Lead

Multimeter

5VDC

Black Negative

Test Lead

Control Board K7 Connector

Ice Dispense (W/O)	Ice Dispense (W/R)
	(VDC ground)
(portion signal)	Ice Dispense (W)
Ice Dispense (W/BK)	(continuous signal)

(5VDC power supply)

Fig. 6

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