Gasboy CFN Series Site Controller III Start-up - Manual (Page 72)

DC Power Measurement and Adjustment FPR
Page 66 MDE-4793A CFN Series Site Controller III Start-up Manual for CFN III Versions 3.5 and above · November 2008
8 Using a 1/8-inch or smaller plastic, flat blade screwdriver, adjust the power supply to +5 VDC
by turning the screw clockwise to increase voltage, counterclockwise to decrease voltage.
Turn the screw slightly to judge how sensitive the adjustment is.
9 Disconnect the meter probes.
10 Turn the AC POWER switch off and return the power supply to its normal location.
11 Fasten the nuts holding the supply.
12 Turn the AC POWER switch back on.
+12 VDC Measurement
For +12 VDC measurement in the ICR, proceed as follows:
1 Measure the +12 VDC between the red (+) and black (-) wires on the DC OUTPUT connector
of the power supply (
Figure 10-3 ).
The voltage should be +11.00 to +14.00 VDC.
Figure 10-3: ICR +12 VDC Measurement Point
2 Close and lock the unit, and replace the screws on the face.
FPR
+5 VDC Measurement
For +5 VDC measurement in the FPR, proceed as follows:
1 Unlock, unscrew, and remove the FPR door.
2 Using a DC voltmeter, measure the +5 VDC between the GND test point and the right side of
R26, both located on the FPR CPU PCB (
Figure 10-4 on page 67 ).