HP J2415A Installation And Reference Manual page 21

2. Check the LEDs on the hub's front panel.
When the hub is powered on, it performs a diagnostic self-test. Observe
the front panel LEDs during the self-test to verify that the hub is
operating properly. As shown below, the LED indications will differ
depending on the optional accessory modules installed.
• Hub without any optional modules installed:
At Power On
During Self-Test
After Self-Test
• Hub with a module installed into the 100VG Expansion Slot:
At Power On
During Self-Test
After Self-Test
If the LEDs do not provide the proper indications, refer to chapter 3,
"Troubleshooting".
3. Turn off the hub by unplugging the power cord.
Installing the HP AdvanceStack Hub
All LEDs turn on.
Self-test requires about 3 seconds. All LEDs are on.
After the hub is tested, half of the LEDs are momentarily
turned on and off. Then the remaining LEDs are momentarily
turned on and off.
All LEDs are off except:
Power LED is on,
RPS LED is on if a Redundant Power Supply is connected.
All LEDs turn on.
The hub and module self-tests require about 20 seconds
total. After the hub is tested, half of the LEDs are
momentarily turned on and off. Then the remaining LEDs are
momentarily turned on and off.
During the module self-test, all LEDs are on except:
Exp Slot LED blinks during module self-test.
All LEDs are off except:
Power LED is on,
Exp Slot LED is on,
RPS LED is on if a Redundant Power Supply is connected
10 Mbit/s Port LED on the SNMP module may be on, off, or
flashing. This LED flashes if a transceiver is installed but not
connected or not terminated. *
* The state of the module LEDs depends on the particular
module installed.
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