GR4000 Installation Guide Version 1.00 - Preliminary
520-10-014-20X
41
Name
Type or color
Role
Action Status
ERROR
LED
：
Yellow
Shows a partial
error in a device.
ON: A partial error was found in a device.
ALARM
LED
：
Red
Shows the problem
affecting the entire
body of a device.
ON: The problem affecting the entire body of a device
happened.
POST
LED
：
Green
Shows the
condition of
STATUS CODE.
ON: STATUS CODE
（
7SEG
）
is showing the initial
diagnosis code of BCU.
OFF: STATUS CODE
（
7SEG
）
is showing FAULT
CODE.
STATUS
CODE
7SEG
：
Green
Shows the
condition of a
device.
(7SEG, decimal
with 2 digits)
ON: The code (00
～
99) to tell the condition of a
device is shown.
（
The code shows the different
contents when POST LED is lit.
）
MEMORY
CARD 0
ACC
LED
：
Green
ON: The memory card 0 is being accessed.
（
Pulling out the memory card from a device is
prohibited.
）
OFF: The memory card 0 is being idled.
(Inserting or pulling out the memory card into or from
a device is allowed.
)
MEMORY
CARD 0
PRI
LED
：
Green
Shows the
condition of the
memory card 0.
ON
:
A device was started up as the primary.
OFF
:
A device was started up as the secondary. Or
the memory card 0 is not used.
MEMORY
CARD 1
ACC
LED
：
Green ON
:
The memory card 1 is being accessed.
(
Pulling out the memory card from a device is
prohibited.
)
OFF
:
The memory card 1 is being idled. (Inserting
or pulling out the memory card into or from a
device is allowed.)
MEMORY
CARD 1
PRI
LED
：
Green
Shows the
condition of the
memory card 1.
ON
:
A device was started up as the primary.
OFF
:
A device was started up as the secondary. Or
the memory card 0 is not used.
Green ON
:
Interface lines are working.
（
Note 2
）
LINK
／
ACT
LINE ERR
LED
：
Green
/
Yellow
Yellow ON
:
A failure was detected in an interface
line.
T
／
R LED
：
Green
Shows the action
status of
CONSOLE
（
10BA
SE
-
T
／
100BASE
-
TX
）
.
Green ON
:
Packets are being
forwarded/received.
（
Note 3
）
(Note 1)
：
When the lamp test switch is pushed, all the LEDs except those on the locked out boards are lit.
(Note 2)
：
If you are using a wrong type of a twisted-pair cable, there is a chance that the LED will be lit. If so, change the
twisted-pair cable to the correct type referring Chapter 3.
(Note 3)
：
Regardless of the state of the line, the LED will be lit if the system detects date being sent or received.
Because of this, there is a chance that the LED will be lit even if the cable is not connected on the destination side.
NOTE
The status of some actions related to BCU is indicated by the LED on the front
panel of the device. See the section
“
1.1 Chassis
”
for its outer appearance, etc.
*
NOTE: The status of some actions related to BCU is indicated by the LED on the front
panel of the device. See the section “1.1 Chassis” for its outer appearance, etc.
