
Installing and Maintaining BN Platforms
1-12 109352-E Rev. A
Powering On the BLN
Power on the BLN as follows:
1. Ensure that the power switch on the rear panel is in the OFF position.
2. Connect the power cable to the power switch assembly on the BLN rear
panel.
3. Insert the power plug into the appropriate wall receptacle (refer to
“Electrical Requirements” earlier in this chapter).
4. Turn the power switch to the ON position.
The fans in the BLN start to spin.
5. Verify that air is flowing from the cooling fans by passing your hand
along the left side of the BLN to feel the air movement.
After you power on the BLN, each routing engine automatically initiates a
diagnostic test to verify proper board function.
Note: If you cannot feel air flow from the vents, if the POWER and DIAG
LEDs remain off, or if the DIAG LED does not turn on, turn the BLN power
switch to the OFF position. Wait 1 minute and then turn the power switch to
the ON position. If the problem persists, contact the Bay Networks Technical
Response Center.
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