POST INSTALLATION TEST

Repair Procedure When LED Indicates Abnormality

1.1 How to check LYR LED

1.Confirm the LYR LED lights green on the front edge of the FCH (PA-FCHA) circuit card. (See “LED Indication (A)” in Figure 6-2.) When the LED lights green, the fusion link is established.

2.Make sure that any alarm LED is not ON (red/yellow). (See LED Indication (B) in Figure 6-2.) When all alarm LEDs are OFF, the DTI (PA-24DTR) card is in normal operation.

If any abnormal state is detected, please see the NEAX2400 IMX Circuit Card Manual.

 

 

 

 

 

FCH

 

DTI

 

 

 

 

 

￿

PA-FCHA

 

PA-24DTR

 

 

 

 

 

OPE

 

OPE

 

 

LED Indication

(A)

 

 

 

 

LYR

Remains ON￿

 

 

LYR

 

 

PCM

 

when Fusion Link ￿

 

 

EST3

 

FRM

 

is established

 

 

LB

EST2

 

BER

 

 

 

 

 

LOAD

EST1

 

RMT

 

 

 

 

 

EST0

 

AIS

 

 

 

 

 

 

 

 

 

 

EST3 Send

 

 

 

LED Indication (B)

Remains ON￿

LB

Receive Polarity of

￿

Payload

when available￿

 

 

EST2 pairwire is normal

 

 

Line

 

for Ethernet

 

 

 

 

 

 

If any LED is ON, refer to the "Circuit

 

 

 

EST1 Receive

 

Internal

 

 

 

 

 

ON

Card Manual."

 

 

 

 

 

 

 

 

 

 

EST0

Link is￿

 

 

 

 

 

 

 

 

 

PCM : On when PCM loss occurs.￿

 

 

 

 

established

 

 

 

Remains ON￿LOAD

 

 

 

 

 

FRM : On when Frame Loss occurs.￿

 

 

8

Mode

 

BER : On when Bit Error occurs.￿

when ready to broadcast￿

 

 

 

 

 

RMT : On when Remote Alarm is received.￿

data packets

Note

 

 

 

 

 

AIS : On when AIS signal is detected.

DTI

Front Cable

FCH

FRONT

Note: When the FCH is a Root Bridge, the LOAD LED remains ON.

When the FCH is Backup Bridge, the LOAD LED flashes (60INT).

Figure 6-2 LED Indications on Fusion Link Related Circuit Cards

2. Repair Procedure When LED Indicates Abnormality

If the LED indication appears abnormal, check the following items again:

2.1Front Cable

Make sure that front cable 10AL (10) FLT CA is securely inserted into the connectors.

CHAPTER 6

ND-70185 (E)

Page 134

Revision 3.0

Page 149
Image 149
NEC NEAX2400 system manual Repair Procedure When LED Indicates Abnormality, Post Installation Test, LED Indication B