Setup guide

INSTALLATION REQUIREMENTS AND SPECIFICATIONS
Page 2-6
current condition has been corrected, the power
supply requires AC power cycling (turn the
power switch off for at least one second, then on
again) to recover.
Fan Tray LED This LED is green when all the fans are
operating properly.
The LED turns red when any fan slows to half
speed or less, and signals the management/
repeater module that there is a fan tray
problem.
Note: When the M5FNB is first powered up, this LED will be red for a
moment until the fans are operating at the proper speed.
TEST POINTS
Each power supply module has service-accessible test points for
measuring each output, as well as for testing the power fail indication
signal (see Figure 2-1, above).
Test points can measure each individual unit even when it is installed
in parallel with another unit.
Note: The M5PSM test points represent the power supply output
voltages and not the bus voltage seen by the Media Interface Modules.
The voltages measured at the test points are one diode voltage drop
above the bus voltage. The following are the voltage tolerances which
ensure that the bus voltage is within specified limits:
+5 V test 4.85 V to 5.45 V
+12 V test 11.50 V to 13.10 V
-5 V test -5.0 V to -5.65 V
-9 V test -8.65 V to -10.00 V
Power Fail Indication:
Power good <1 V
Power bad >4 V