q cpu power suply

2015 Quantum® Controller Manual

DANGER! Electricity can KILL! Use extreme CAUTION around electrical components shown on these pages. SHUT OFF, LOCKOUT and TAGOUT electrical power BEFORE opening and servicing any internal
components. All electrical testing and service on this equipment must be done by a QUALIFIED ELECTRICIAN, in accordance with all applicable national, state and local
electrical SAFETY codes. Failure to do so will result in death or serious injury. Brock Grain Systems neither will be liable for damage to the Dryer or to person(s) because of unqualified electrical testing or use. Improper testing or use will void the Warranty.

Master CPU Board Power Supply

The Power Supply for the Master CPU and associated circuitry is a multiple-output regulated switching supply. Its outputs are -12VDC, +12VDC, and +5VDC. The - 12VDC is used to power the Cooling Fan while the +5VDC is used to power the Master CPU Board for processor control. Adjust for +5.05VDC to +5.15VDC. If the output is adjusted below this value, the QUANTUM® display may not boot. If it is adjusted above this value, damage to the Master CPU could result. The +,-12VDC outputs have no direct adjustment and will go up and down proportionally with the+5VDC adjustment. Adjustment of the output is controlled by the small potentiometer located on the edge of the circuit board (see layout below). The values of these outputs are not critical.

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HIGH VOLTAGE!

DO NOT touch the Heat Sink while power is on! Failure to follow this instruction will lead to electrical shock, severe injury or death.

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