Led Indications; Connector Pin-Outs On Briu-S Pcb - NEC Aspire S Manual

Section 2: PCB Installation and Startup

LED Indications

LD5
(PCB Status)
LD1 - LD2

Connector Pin-Outs on BRIU-S PCB

2-30 ◆ Section 2: PCB Installation and Startup
LED Function
Indicates the status of
the PCB.
Indicates the Layer 1
link status of the lines.
The CN2 connector is polarity sensitive (tip to tip, ring to ring).
12345678
Pin-Out for ISDN Cable at External DSU and Mod Jack
Connection on DSU Side
Pin No.
Terminal
1 -
2 -
3 TA +
4 RA +
5 RB -
6 TB -
7 -
8 -
LED Status
Green On
Green Flashing
(slow flash)
Green Flashing
(100ms On/Off)
Green Off
Red On
Red Off
RJ61 Cable Connector - CN2
T-Bus Connection
Pin No. Connection
1 -
2 -
3 TA +
4 RA +
5 RB -
6 TB -
7 -
8 -
T-Bus Connection
DSU
-
-
Rx +
Tx +
Tx -
Rx -
-
-
Operation Status
Initializing
Initialization problem
occurred during self-check.
Operating normally
Downloading
Layer 1 link established
No link
Connection on Mod Jack
Terminal DSU
- -
- -
TA + Tx +
RA + Rx +
RB - Rx -
TB - Tx -
- -
- -
Aspire S Hardware Manual