User Manual

December 16, 2002 Part 003609A revision 01 87
Chapter 4: Installation Procedures
Test CompactPCI Power Supplies
This procedure describes how to test the CompactPCI power supplies and shelves
for electrical faults. Testing the power supplies and shelves before inserting the
cards ensures that, in the unlikely event that an electrical fault does occur, no
cards will be damaged.
 To test CompactPCI power supplies
1 Ensure that your main +24V DC power supply is powered on and is providing a
power source that meets the electrical requirements listed on page 27.
2 Power on each power supply in the utility and radio shelves separately. Wait at
least 10 s before powering on the next power supply.
Table 4.9 shows the circuit breakers for each power supply.
WARNING: The red OUTPUT FAIL light on each power supply should
turn off within 3 s. If the OUTPUT FAIL light remains on or flickers
continuously, power down the chassis immediately and replace the power
supply. If the replacement power supply also indicates a fault condition, your
chassis may be damaged. Replace the chassis before continuing with the
NPM installation.