User's Manual

Samsung CDMA BSS: Indoor BTS Installation Manual
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BSS Version 4, Document V4D0001 release 0.5, Indoor BTS Installation Manual, release 2.0
17 Problem exists in power control panel. Resolve fault, or replace
power control panel, then go to step 20.
18 Is red Fail LED on the fan rack on?
M If yes, go to step 19.
M If no, go to step 20.
19 Problem exists in fan rack. Resolve fault, or replace fan rack, then
go to step 20.
20 Return to the rack power up section of this chapter and repeat the
procedure to power the fan.
Shelf power problem Follow this procedure to resolve problems with initial power-up of
shelves (SH-0, SH-1, or SH-2).
1 Did the circuit breaker for the shelf trip (i.e., snap back to off)?
M If yes, go to step 2.
M If no, go to step 9.
2 Turn off all input power to the SBR rack.
3 Disconnect the A and B power leads from the shelf backplane.
4 Turn on input power to the SBR rack.
5 Reset the circuit breaker to on.
6 Did the circuit breaker trip again?
M If yes, go to step 7.
M If no, go to step 8.
7 A short circuit exists in the power control panel. Resolve fault, or
replace power control panel, then go to step 24.
8 A short circuit exists on the shelf. Locate and resolve short circuit on
shelf, or replace backplane, then go to step 24.
9 Is the green LED above the circuit breaker on?
M if yes, go to step 14.
M If no, go to step 10.
10 Check main input power to power control panel.
11 Is main input power present?
M If yes, go to step 12.
M If no, go to step 13.
12 Problem exists in power control panel. Resolve fault, or replace
power control panel, then go tostep 24.
13 Restore main input power, then go to step 24.
14 Are the LEDs of all modules off (on the side of the shelf that is under
test)?
M If all LEDs are off, go to step 17.
M If some module LEDs are off, and some are on, go to step 15.