Allied Telesis AR Series Hardware Reference Manual page 41

Hardware Reference
Figure 17: Front and rear panels of the AT-AR740 Series router.
Front Panel
STATUS
POWER RUN SYSTEM CLEAR SECURITY
Base LEDs
Rear Panel
DC Power inlet for RPS
RPS
Power
AC Power
100-240 VAC
50-60 Hz
1.0 A
Power switch
AC Power inlet
Table 19: Functions of AT-AR740 router LE D s .
LED
Front panel Rear panel
ETH
LNK/ACT
100M
BASE
Power PWR
Run RUN
System SYS
Security SEC
ENGINE
ACT
C613-03031-01 REV C
3 0 3
3
SYN
Tx Tx
1
Rx Rx
NSM Bay with AT-AR040 4 PIC NSM and PICs installed
LEDs and what they mean
Functions of the AR740's LEDs are shown in Table 19 on page 41. Additional
rear panel LEDs may be present if a PIC or NSM is installed. Functions of PIC
and NSM LEDs are described in their respective Hardware References.
Function
These LEDs give indications about the Ethernet interfaces.
Lit green when the Ethernet interface is connected to a device (e.g., a hub) which is
generating link pulses. Lit yellow indicates transmission or reception activity.
Lit when the Ethernet interface is in 100 Mbps mode.
These LEDs indicate the state of the main router unit.
Lit when power is supplied and the router is switched on.
Lit when the internal processor is executing code. If the processor stops for any reason
(a fault condition), then the LED will not be lit.
Lit when the switch or management software is malfunctioning. Flashes to indicate
fan, PSU, and RPS faults.
1 Flash: A switch fan has failed.
2 Flashes: If an RPS is connected and RPS monitoring is enabled, an RPS fan has failed.
3 Flashes: If an RPS is connected, the switch's PSU (Power Supply Unit) has failed.
4 Flashes: If RPS monitoring is enabled, the RPS PSU has failed.
5 Flashes: If RPS monitoring is enabled, an RPS is not connected or is not operational
Lit when a user is logged in with SECURITY OFFICER privilege and the router is in
SECURITY MODE.
These LEDs give indications about a MAC card, which can be installed for encryption
and/or compression purposes.
Lit when a MAC card is installed in the MAC slot.
Two PIC bays with PICs installed
0
2
PIC 1
SYN LNK
NSM 0
Swap /ACT
0
Hot
Swap
In Use 100
Ethernet 1
Ethernet Ports
and LEDs
NSM Hot
Swap button
and LEDs
Modular Branch Office Router
DISCONNECT POWER BEFORE INSTALLING/REMOVING PIC PIC 0
LNK
ACT DAT ERR CLR
/ACT
ENGINE
BASE
100
PWR RUN SYS SEC
Ethernet 0
Port 1 Port 0
Asynchronous
ports
Base LEDSs and
MAC engine LEDs
740frac
41