Nortel DCT1900 Technical Product Manual page 206

Technical Product Manual - DCT1900
Installation Instructions, Digital Trunk Unit (DTU–E1) – REX-BRD0002 or 2/ROFNB 157 13/1
LEDs
Each DTC has its own LEDs:
LED1 Green
LED2 Red
LED3 Red
LED4 Red
11.3 Installation
1. Place the DTU–E1 Firmware Set PROMs into the IC sockets as indicated and check the strap
settings (see Figure 11–1).
2. Insert the DTU–E1 into the card guides in the specified board position.
3. Gently push the board into the backplane connector until it locks. Don't use any force.
4. Connect the twisted pair cables for cable set AWS1033 to the front of the board.
11-2
: Normally on. Power On LED
: Normally off. Watch–dog LED
: Normally off. Board not polled LED
: Normally off. Board Error LED
Install-DCT1900/R8/mw
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