Tait TB8100, Service Manual

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222 Power Management Unit Fault Finding TB8100 Service Manual
© Tait Electronics Limited September 2006
13.6 Initial Checks
You can use the TB8100 Service Kit to check the basic operation of the
PMU without removing the covers.
■
To check whether the PMU powers up correctly, produces the correct
output power, or generates any alarms, carry out
Task 1 to Task 4 .
■
To carry out additional checks using the Service Kit, go to Task 5 .
Note
If you are testing an AC and DC PMU, carry out these checks for
both supplies.
In this section voltages are given first for a 12V PMU, followed by voltages
in brackets for a 24V PMU ( ) and a 48V PMU [ ].
Figure 13.2 Recommended test equipment set-up for initial and DC checks
PMU PA
PC
Reciter
Control
Panel
DC DC
RS-232
system control bus
connected within subrack
Subrack
Interconnect
Board
DC AC