Gasboy CFN Series Site Controller III Start-up - Manual (Page 69)

MDE-4793A CFN Series Site Controller III Start-up Manual for CFN III Versions 3.5 and above · November 2008 Page 63
SC III DC Power Measurement and Adjustment
10 – DC Power Measurement and Adjustment
The following steps describe, for each of the components, how to measure the voltages
required in Section 9. DC POWER of the Start-up Form. If any of the measured DC voltages
are outside of the tolerances noted (except for +5 which can be adjusted), immediately shut off
the AC POWER switch of the unit and diagnose the problem. Test points are shown for each
of the system devices in this section. All voltage measurements should be taken with the
negative lead of the digital voltmeter on the ground (GND) test point.
9. DC POWER
As you are measuring the noted voltages, fill in the readings for each in this section of the Start-up
Form.
SC III
The SC III has no DC power adjustments.
PCU(s)
+5 VDC Measurement
For +5 VDC measurement in the PCU, proceed as follows:
1 Turn off the AC and DC power switches on the supply assembly.
2 Locate the connector labeled POWER in the upper left-hand corner of the motherboard.
Remove the black plastic cover.
3 Turn on the AC and DC power switches.