24 Chapter 3 Hardware TroubleshootingNN40160-700NN40160-700BRIM LEDsThe BRIM has one additional LED beside each RJ-48C jack. These LEDs are on when the ISDNline is active. The figure BRIM LEDs on page 24 shows the location of the LEDs on a BRIM.Figure 4 BRIM LEDsFor more information on the power and status LED functions, see Media bay module LEDs(expansion units only) on page 21.Check the wiring connectionsAfter you check the power source and the LEDs, begin to check the wiring. Check the connectionsbetween the following components:• the expansion unit and the main unit• the main unit and to the MBMs—make sure that the cables are properly seated and areconnected to the correct ports• the power supply and the AC power outlet• if you are using a UPS, check the connection from:— the USB port on the BCM450 to the USB port on the UPC— the UPS and the electrical outlet— the connection from the power supply to both the UPS and the BCM450 main unit• the lines and extensions connected through the RJ-21 telephony connector• the auxiliary equipment—connections at the auxiliary terminal block, or at the patch panelVerify the keycodesIf a specific feature is not functioning, verify that the feature is included in your installedkeycodes. This section provides procedure for verifying the installed keycodes using eitherElement Manager or Telset. For more detailed information about retrieving and entering thekeycode for your system, see the Keycode Installation Guide (NN40010-301).To verify the keycodes using Element Manager1 In the Task Navigation Panel, select the Configuration tab.Power LEDStatus LED
