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EtherHub 1500 System User’s Guide
Hardware Description 2-13
Diagnostic Test LED Indicators
The RJ-45 PARTITION/DISABLE LEDs not only monitor the
partition or disabling of an RJ-45 port, they also monitor
diagnostic test results.
LED Activity Condition Indication
BLINKING RED
LIGHT
ON The corresponding hardware component failed the
diagnostic test.
NO LIGHT OFF The corresponding hardware component
successfully passed the diagnostic test.
After power on, the hub automatically performs a diagnostic
test. Seven hardware components are tested for EtherHub-16i
+
,
while 14 components are tested for EtherHub-16mi
+
. During
this test, STP PARTITION/DISABLE LEDs indicate the
success/failure of each test. The following table shows what
each PARTITION/ DISABLE LED monitors.
PARTITION/DISABLED Test function/component
LED Indicator EtherHub-16i
+
EtherHub-16mi
+
1 CPU CPU
2 ROM Flash ROM 1
3 RAM SRAM
4 Serial communication
controller
LAN controller initialization
5 Hub control 1 LAN controller ID address
6 Hub control 2 LAN controller share memory
7 Timer LAN controller loop back test
8 N.A. LAN controller INT
9 N.A. Hub controller 1
10 N.A. Hub controller 2
11 N.A. Stack management bus
12 N.A. Serial port RS232 controller
13 N.A. EEPROM
14 N.A. Flash ROM 2