TI2560 12-24 GPU
17
3
Operating Procedures
Set multimeter to Volts. Place the black lead
of the multi meter on one of 24 Vdc Output
Connector screws as shown in Figures 3.8.5 and
3.8.6. Next, touch the red lead of the multimeter
to the positive pin of the 24 Vdc Output Con-
nector (shown in Figure 3.8.5). Do the same for
the negative pin (see Figure 3.8.6). In both cases
the meter should read open circuit.
3.8.3 - DC Output
Connector Positive Pin
1. Testing between the Chassis Ground and the 12 Vdc Output Connector.
3.8.4 - DC Output
Connector Negative Pin
3.8.5 - DC Output
Connector Positive Pin
2. Testing between the Chassis Ground and the 24 Vdc Output Connector.
3.8.6 - DC Output
Connector Negative Pin
3.8.7 - Negative Probe on
the AC Ground Post and the
Positive Probe on the DC
Positive Post.
3. Testing the NEMA Receptacle.
Set multimeter to Ohms. Place the black lead on
the ac ground post and the red lead to the dc
positive post (shown in Figure 3.8.7). Next, move
the red lead of the multimeter to the dc negative
post. In both cases the Multimeter should read
greater than 10 MΩ.
Move the positive probe to the fastener screw
on the dc receptacle (shown in Figure 3.8.8).
Multimeter should read less than 1 Ω.
3.8.8 - Positive Probe to
the Fastener Screw on the
DC Receptacle.
Set multimeter to Volts. Place the black lead
of the multi meter on one of 12 Vdc Output
Connector screws as shown in Figures 3.8.3
and 3.8.4. Next, touch the red lead of the
multimeter to the positive pin of the 12 Vdc
Output Con nector (shown in Figure 3.8.3).
Do the same for the negative pin (see Figure
3.8.4). In both cases the meter should read
open circuit.
Check Unit Internal Resistance (Test for Shorts)
NOTE
!
Unit should be disconnected from any AC power sources prior to testing.