Allied Telesis AR Series Hardware Reference Manual page 44

44
Figure 18: Front and rear panels of the AT-AR740 Series router.
Front Panel
STATUS
POWER RUN SYSTEM CLEAR
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 20: Functions of AT-AR740 router LEDs.
LED
Front panel Rear panel
ETH
LNK/ACT
100M
BASE
Power PWR
Run RUN
Front and Rear Panels
Front and rear panels of the AT-AR740 router with a PIC installed in each PIC
bay, and an AT-AR040 4-PIC NSM installed in the NSM bay, are shown in
Figure 18 on page 44.
SECURITY
3 0 3
3
SYN
Tx
1
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 20 on page 44. 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.
0
2
PIC 1
SYN
NSM 0 Swap
Tx
0
Rx
Hot
Swap
In Use
NSM Hot
Swap button
and LEDs
Modular Branch Office Router
Two PIC bays with PICs installed
DISCONNECT POWER BEFORE INSTALLING/REMOVING PIC
LNK LNK
ACT DAT ERR CLR
/ACT /ACT
ENGINE
BASE
100 100 PWR RUN SYS SEC
Ethernet 1 Ethernet 0
Port 1
Ethernet Ports
Asynchronous
and LEDs
Base LEDSs and
MAC engine LEDs
AR Router
PIC 0
Port 0
ports
740frac
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