3Com NETBuilder II, Installing Instruction, Page: 56 / 82

3-10 C
HAPTER
3: NETB
UILDER
II 8-S
LOT
E
XTENDED
B
RIDGE
/R
OUTER
LEDs
There are six LEDs on the front panel of the Extended chassis. Table 3-2
describes these LEDs and their functions.
* This LED is the same as the POWER LED on your main processor module.
† If you are using a DPE module, this LED is the same as the POWER/FAULT LED on the DPE module. Refer to the DPE module guide for more
information about this LED. If you are using a CEC 20 module, this LED is the same as the STATUS LED on the CEC 20 module. Refer to the CEC
20 module guide for more information about this LED.
Main Processor and I/O Module Slots
The Extended chassis has two main processor module slots and eight I/O
module slots. The two slots on the far left are for the main processor modules,
and the eight remaining slots are for I/O modules.
The chassis is shipped with one open main processor slot and the second slot
covered by a filler panel. Install your main processor module in the open slot
and leave the filler panel in place over the second slot. If you have an EZBuilt
system, the main processor module is already installed.
The Extended chassis currently supports one main processor module.
All eight I/O slots are covered with card carriers, which also serve as filler panels.
The card carriers allow you to install regular-format I/O modules into the
extended-format slots. Remove the filler panels when you install I/O modules in
the slots. Keep a filler panel in any slot where you do not plan to install an I/O
module. For information on installing regular-format modules in the Extended
chassis slots, refer to the appropriate I/O module guide.
WARNING: Remove the filler panel only from I/O slots that will house an I/O
module. All unused I/O slots require the filler panels to maintain proper cooling
of the unit and regulatory compliance. Failure to cover open slots can result in
overheating of the NETBuilder II system and will invalidate the warranty.
Figure 3-11 shows the position and numbering sequence of the Extended
chassis slots.
Table 3-2 LEDs on Extended Chassis Front Panel
LED Name Color Normal Behavior Meaning
PS1 * (upper power supply
PS2 (lower power supply)
Green On continuously On as long as the system is turned on.
Yellow Indicates a fault condition with a power supply.
CPU1 †
CPU2 (unused)
Tricolored See the appropriate main processor module guide for
descriptions of this LED.
FAN1 (left fan tray)
FAN2 (right fan tray)
Green On continuously On as long as the system is turned on.
Yellow Indicates a fan is not operating properly.