Tekelec T1000 Hardware Manual page 125

necessary to remove the plastic covers on the front of the breakers. If the
covers are removed, to maintain NEBS compliance, make sure they are
replaced when the FRU replacement has been completed.
WARNING: A T1000 AS chassis is redundantly powered from both A and
B -48 VDC buses. Ensure that both the circuit breaker supplying A power to
a chassis and the circuit breaker supplying B power to a T1000 AS chassis
are turned OFF by measuring the voltage with a VOM on the cable that
connects the T1000 AS chassis to its breakers. Both A and B power LEDs on
the front panel of the T1000 AS chassis should be OFF.
4.
Prepare the T1000 AS chassis for access to the FRU using one of the following
procedures:
WARNING:
frame when working on electronic components.
• Procedure 7-4, "Slide T1000 AS Chassis Out from Frame," on page 7-8
• Procedure 7-6, "Remove a T1000 AS Chassis from Frame," on page 7-10
NOTE: If this procedure is being performed to move hard disk drives
from a failed T1000 AS chassis to a replacement T1000 AS chassis,
Procedure 7-6, "Remove a T1000 AS Chassis from Frame," on page 7-10 is
recommended.
5.
Using a Phillips screwdriver, loosen the captive spring-loaded screws on the
T1000 AS chassis top cover until they are free. See Figure 7-10 for locations.
910-0095-001 Revision J November 2007
Always wear an ESD wrist strap grounded to the bench or
How to Replace T1000 AS FRUs
7-25