Hoshizaki dcm-75ibah service manual Control Board Layout, DCM-751BH

A. Control Board Layout

1. DCM-751B_H

	High-Pressure Switch
	#3 to #4 (Y)	Gear Motor Protect Relay Circuit
Control Switch	Open-5VDC	#5 to #6 (W/O)
#1 to #2 (W/BK)	Closed-0VDC	Relay De-Energized-Open-5VDC
"ICE"-Open-5VDC		Relay Energized-Closed-0VDC
"DRAIN"-Closed-0VDC			• K9 Connector
			• "SERVICE" Button
			(Ice Purge Cycle Bypass)
		5VDC	• K8 Connector

•K1 Connector #3 GM (DBU) #2 GM Voltage Input (BR)

•K2 Connector

Drain Valve #10 (W/BU)

115VAC

24VAC

Transformer 24VAC Input #1 (W/R)

Transformer 24VAC Neutral #2 (LBU)

Mechanical Bin Control #3 to #4 (GY)

Float Switch Output

Transformer Input
#9 (W/R)
Inlet Water Valve
#8 (W/BR)	24VAC
#7 (W/R)
Transformer Input
Dispense Water
Valve #6 (W/O)
24VAC Input
#5 (W/R)	115VAC
Agitating Motor
#4 (O)
115VAC Input
#3 (BK)
Dispense Motor
#2 (P)
115VAC Input
#3 (BK)

5VDC

5VDC

#5 (BK)(+)

Upper Float Switch #6 (R)

Lower Float Switch #7 (DBU)

• K7 Connector

Continuous Ice Dispense

Signal #2 (Y)

Water/Ice Dispense

Output #3 (BR)(+)

Portion Ice Dispense

Signal #5 (R)

Water Dispense Signal #8 (DBU)

LED Legend: AM-agitating motor COMP-compressorFLUSH-drain valve GM-gear motor ICE-dispense motor WTRDP-water dispense valve WTRIN-inlet water valve

• S1 Dip Switch • "POWER OK" LED

5VDC Ground (GND) Terminals	• K6 Connector
	Open

Fig. 9a

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