NEC Neax 2400 Ipx System Operations And Maintenance Manual

NDA-24307 CHAPTER 4
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2.3.7 MISC Card Replacement Procedure
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Keep MB switch UP.
END
START
Extract the MISC card from its mounting slot.
Insert the new circuit card into the same 
mounting slot.
On the MISC card, set MB switch DOWN. On the MISC card, set MB switch UP. 

CHAPTER 4 NDA-24307
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3. PIM ACCOMMODATING CIRCUIT CARD REPLACEMENT PROCEDURE
This Section covers the procedures for replacing circuit cards accommodated in the PIM (IMG0/1/2/3).
3.1 Precaution
This procedure is applied when replacing a faulty circuit card with a spare. It is also able to be applied
when checking a spare card.
There are functional switches (having set the default switch) on some of the circuit cards to be
replaced. As for switch...

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3.3 Operating Procedures
The following sections provide operating procedures to replace circuit cards mounted in the PIM. Perform
the operations corresponding to each Reference Item specified in Table 4-3. The procedures assume that
the system adopts the dual configuration.
Table 4-3  PIM Circuit Cards and Reference Items
CIRCUIT CARD 
FUNCTION NAMEREFERENCE ITEM REMARKS
LC/TRKSection 3.3.1, LC/TRK Circuit Card Replacement...

CHAPTER 4 NDA-24307
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3.3.1 LC/TRK Circuit Card Replacement Procedure
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Keep MB switch set at UP.
END
START
Extract the circuit card from its mounting slot. On the circuit  card to be replaced, 
set the MB switch UP.
Insert the new card into its mounting slot.
On the new card, set MB switch DOWN. 

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3.3.2 MUX Card Replacement Procedure
The MUX (PH-PC36) card is mounted in Slot No. 13 and/or 14 of each Port Interface Module (PIM).
The card’s main function is to provide an interface between the CPR and Port Microprocessor (PM) of
the line/trunk circuit, and also to provide an interface for multiplexing/de-multiplexing of voice Pulse
Code Modulation (PCM) information and digital data information. Use the procedures below to...

CHAPTER 4 NDA-24307
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MUX ACT lamp on the new card 
lights red.
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
B
Insert the new card into the PIM.
A
On the new card, set the MB key UP.
Extract card to be replaced from the mounted PIM. Disconnect the cable for the MUX front
connector on the card to be replaced.
Connect the disconnected cable to the 
MUX front connector on the new card.
Referring to the replaced card, set the keys...

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Note:
This procedure assumes the Speech Path mode change is executed totally on a system basis. If the
change is required on a node basis, use the MBR key on that node’s GT (PH-GT09) card or CMODI/
CMOD command. For more details, refer to Section 12, Chapter 6.
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
System Changeover
Replaced MUX: STBY to ACT
Mate MUX: ACT to STBY
Check the following lamp indications...

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3.3.3 PWR Card Replacement Procedure
The PWR (PA-PW55-A/PA-PW55-B) and DPWR (PA-PW54-A/PA-PW54-B) cards are mounted re-
spectively in Slot No. 1 and Slot No. 3 of each PIM. The card’s main function is to provide operating
power to the circuit cards accommodated in the PIM. The procedures to replace the PWR/DPWR card
are as follows.
Replacement Procedure
OPE lamp on the card goes OFF.
A
Turn OFF the -48V SW on the card to be...

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ATTENTIONContents
Static Sensitive
Handling
Precautions Required
OPE lamp on the new card is OFF.
OPE lamp on the new card lights 
green.
END
A
Insert the new card into the PIM.
Turn OFF the MB key on the card.
Turn ON the -48V SW on the new card. Connect the power cable to the -48V IN 
connector. Turn ON the MB key on the new card. 

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3.3.4 HUB Circuit Card Replacement Procedure
The HUB (PA-M96) card is mounted in any universal slot of the PIM. This card provides the repeater
function based on ANSI/IEEE820.3.8. This card is also equipped with eight ports for 10 BASE-T cable
connection used for establishing Ethernet Link and/or connecting the MAT.
HUB Card Replacement ProcedureReplacement of a HUB card may result in a temporary shutoff of the Ethernet link. If...