NEC Neax 2400 Ipx System Operations And Maintenance Manual

NDA-24307 CHAPTER 4
Page 323
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
OPE lamp on the new card goes 
OFF.
OPE lamp on the new card lights 
green.
END
A
Set the key on the new card, referring to the
Connect the disconnected 10 BASE-T cable(s) to
Insert the new card into the PIM. Set the MB key on the new card UP. Extract the HUB card from the universal slot of
the PIM.
card replaced.
the connector(s) on the new card.
Confirm STxx...

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
3.3.5 SDT Card Replacement Procedure
The SDT (PA-SDTA/PA-SDTB) card, mounted in a universal slot of a PIM, is used
to provide a 52M interface for the optical fiber lines. Use the following procedure
to replace the SDT card with a spare.
Optical Fiber Cable Replacement Procedure
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
While this card is...

NDA-24307 CHAPTER 4
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Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
OPE lamp on the PA-SDTA card 
lights steady-green.
END
A
Remove the optical fiber cable from the front 
connector on the PA-SDTA card.
Connect the new optical fiber cable to the front 
connector on the PA-SDTA card.
On the PA-SDTA card, set the MB key DOWN 
(=OFF) and turn OFF Switch 4 of the P-SW key. 

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
PA-SDTA/PA-SDTB Card Replacement Procedure
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
ACT lamp on the PA-SDTA card 
goes OFF.
Though any call attempt is rejected, 
already established calls are safely 
maintained. When any connection 
link exists, the link is maintained.
Note:When the card is in a dual
configuration, perform this
for both system sides, in the
order of STBY
 → ACT.
OPE lamp on the PA-SDTA...

NDA-24307 CHAPTER 4
Page 327
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
OPE lamp on the PA-SDTB card 
lights red.
When any connection link exists, the 
nailed-down connection between the 
FCH (PA-FCHA) and SDT (PA-
SDTB) cards is cut off. Already 
established calls, while in speech, 
are all disconnected.
Confirm that the MB key on the new 
card is set UP (=ON). If the new card 
is PA-SDTA, also confirm that 
Switch 4 of the P-SW...

CHAPTER 4 NDA-24307
Page 328
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
OPE lamp on the new card lights 
red.
OPE lamp on the new card lights 
steady-green.
END
B
On the PA-SDTA card, turn OFF Switch 4 of the
P-SW key. Insert both PA-SDTA/PA-SDTB cards (including new
card) simultaneously into the same slots of the PIM. When the new card is PA-SDTB, also connect the MT
24 TSW cables to all the required front connectors.
On the PA-SDTB...

NDA-24307 CHAPTER 4
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
3.3.6 DLMX Card Replacement Procedure
The DLMX (PA-PC94) card, accommodated in a universal slot of a PIM, is used to
collect the BLF information (associated with Attendant/Desk Console operation)
from DLKC cards of all nodes in the IPX-U system, and to send the collected data
to ATI cards of all nodes. When replacing this card, take the procedure below:
Replacement Procedure
 
ATTENTIONContents
Static Sensitive
Handling...

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
A
END
On the new D LM X (PA-PC 94) card, set the 
sw itc h  se ttin g , re fe rrin g  to  th e  ca rd  re p la ce d .
On the new D LM X (PA-PC 94) card, 
set the M B key UP.
In se rt th e  n e w  D L M X  (P A -P C 9 4 ) c a rd  in to  th e  P IM .
Set the M B key on the new card D O W N .
E xtra c t th e  D L M X  ca rd  to  b e  re p la ce d   
from  the universal slot of the PIM .
 
ATTENTIONContents
Static Sensitive...

NDA-24307 CHAPTER 4
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
4. ISWM ACCOMMODATING CIRCUIT CARD REPLACEMENT PROCEDURE
This section explains the procedure for replacing circuit cards mounted in the ISWM.
4.1 Precautions
Use this procedure to replace a faulty circuit card with a spare or to check a spare card.
There are the functional switches (having set the default switch) on some of the circuit cards to be
replaced. As for switch setting on the circuit cards, confirm the circuit card...

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
4.3 Operating Procedures
The following section provide operating procedures to replace circuit cards mounted in the ISW. Perform
the operations corresponding to each reference item specified in Table 4-4. The procedures assume that
the system adopts the dual configuration.
Table 4-4  ISW Circuit Cards and Reference Items
CIRCUIT CARD 
FUNCTION NAMEREFERENCE ITEM REMARKS
IOGTSection 4.3.1, IOGT Card Replacement Procedure...