Power System Troubleshooting - Paradyne Jetstream CPX-1000 Installation And Operation Manual

4. Troubleshooting
Power System
Troubleshooting
Plant Battery "A"
Step 1
4-12
The CPX requires
−
4 8Vdc inputs (A and B) are wired to the CPX, so that if one input
−
to the system fails, the other maintains power. Input A delivers
power to the left and center power supply modules; Input B
delivers power to the center and right power supply modules.
The CPX has three load-sharing power supplies, which deliver dc
voltage to all of the plug-in modules. A circuit breaker located on
the CPX rear panel, provides equipment electrical protection
(Figure 4–2).
Open Protective Guards
16 15 14
DC -48V
DC -48V
RTN
Frame
Ground
Points
(requires
10-32 x 1/4"
To
screws)
Figure 4–2. Power Panel and Circuit Breaker
After you apply power to the CPX, if none of its front panel
indicators light, and if its internal fans are not working, refer to
Table 4–9 for troubleshooting instructions.
Isolate a problem to one or more modules before troubleshooting:
After applying power, wait at least two minutes for the system to
initialize. If none of its front panel indicators light and its internal
fans are off, see Troubleshooting Instructions
4 8V power from a plant battery source. Two
13 12 11 10 8
9 7
Plant Circuit
Battery A Breaker
Barrier Strip
1000-A2-GN22-00
6 5 4 3 2 1
DC -48V
DC -48V
RTN
0069
Plant
Battery B
Barrier Strip
To
Plant Battery "B"
(Table 4–9).
February 2003