GS4000 Installation Guide Revision 4.00
520-10-026-30X
1-40
Name
Type or Color
Role
Action Status
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
(
10BASE-
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: The switches are embedded into the BCU front panel. Use tools, such as a fine-edge driver when pressing them.
Note 3: 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 4: 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.
WARNING: WHEN PRESSING THE SWITCHES EMBEDDED INTO THE BCU FRONT PANEL,
DO NOT USE THE TOOLS SUCH AS THOSE WITH FINE EDGES WHICH ARE
EASILY BROKEN, OR THINGS SUCH AS PINS OR PAPER CLIPS, WHICH ARE
DIFFICULT TO BE REMOVED ONCE THEY ARE DROPPED INTO THE
CONCAVES WHERE THE SWITCHES ARE LOCATED. OTHERWISE, YOU MIGHT
FACE AN ACCIDENT SUCH AS A FIRE OR AN ELECTRIC SHOCK.
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: Do not install optional components from a GR4000 or GS4000 into devices other
than another GR4000 or GS4000. Doing this causes a fire or an electric shock.
