Ericsson EDN312 Betriebsanweisung PDF herunterladen (Seite 45)

Troubleshooting

4/1553-HSC 901 101/2 Uen B 2009-02-27

8 Troubleshooting

Table 7 on page 41 lists faulty situation indications on the main LEDs. For

each fault indication the probable cause and remedy are given. This

information applies to all nodes except EPN102.

Table 7 Troubleshooting

Symptom Indication Possible Cause Remedy

Green

Red

••••••

The “Flash LEDs” function in PEM

was activated.

Deactivate the “Flash LEDs” function.

Green

Red

••••••

One or both fans have stopped. Replace the faulty fan.

1. Temperature too high:

One or both fans may be

faulty.

The ambient temperature is

too high.

Replace the faulty fan.

Make sure that the ambient temperature is

within the specified range.

Green

Red

••••••

2. The HW is faulty or the Flash

contains no valid Reset SW.

Replace the node.

Green

Red

••••••

There is no DC power.

Check the power node connected to the

node. Check the Ethernet cable through

which the power is supplied.

Green

Red

••••••

The IP DSLAM contains no valid

Boot Loader, only Reset SW.

Replace the node.

Green

Red

••••••

0.5 s On,

0.5 s Off

(slow blink)

Boot Command Mode. This mode is

only entered, if the Boot Loader

cannot initiate a DHCP request.

Typically, because there is no valid

Ethernet MAC address stored in the

Flash.

Replace the node.

Green

Red

••••••

0.2 s On,

0.2 s Off

(medium blink,

for a period

longer than four

minutes)

DHCP Server not reachable and no

SW image stored in the Flash.

Check that the DHCP Server is up, and

verify the connections.

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