NEC Neax 2400 Imx System Operations And Maintenance Manual

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ATTENTIONContents
Static Sensitive
Handling
Precautions Required
END Insert the new PWR UNIT into the LPM.
Extract the PWR UNIT from the CPR.
Turn ON the SW key on the PWR UNIT.
A
On the EMA card, set EMA SUP switch DOWN.
Reattach power alarm cable to the PALM 
Connector on the PZ-PW92.Reattach power cables to OUTPWR
and INPWR Connector on the PZ-PW92. 

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

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2. TSWM ACCOMMODATING CIRCUIT CARD REPLACEMENT PROCEDURE
This section explains the procedure for replacing circuit cards accommodated in the TSWM.
2.1 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 the functional switches (having set the default switch) on some of the circuit cards to be
replaced. As for switch...

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2.3 Operating Procedures
The following paragraphs explain the operating procedures to replace circuit cards located in the PIM.
Perform the operations corresponding to each Reference Item specified in Ta b l e  4 - 2.
Table 4-2  TSWM Circuit Cards and Reference Items
CIRCUIT CARD 
FUNCTION NAMEREFERENCE ITEM REMARKS
GTSection 2.3.1, GT Card Replacement Procedure
TSWSection 2.3.2, TSW Card Replacement Procedure
DLKCSection...

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2.3.1 GT Card Replacement Procedure
The GT (PH-GT09) card is located in Slot No. 10 or 11 within the TSWM. The card’s main function
is to provide both MISC and I/O Local bus interface between the microprocessor of CPU and other
lower echelons, such as DLKC, TSW and MUX cards. Follow the procedures below to replace a GT
card with a spare.
Note:To replace the GT card, the ACT/STBY status of GT must be changed over first. This...

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GT Card Replacement Procedure
Use extreme care when operating the keys on the DSP of CPR and PH-GT09 card.
WAR NI NG
 System changeover of GT from 
ACT to STBY mode
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Check the following lamp indications
on the GT card to be replaced and on
the DSP of CPR that controls the GT:
 OPE/MB (GT card) = OFF
 CPU OPE (CPU DSP) = OFF
 IMG0 (CPU DSP) = Flash (green)
...

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ATTENTIONContents
Static Sensitive
Handling
Precautions Required
 OPE/MB lamp on the GT card 
remains OFF.
 OPE/MB lamp on the new card is 
OFF.
 OPE/MB lamp on the new card 
remains OFF.
B
Set the MBR and MB keys on the new card UP.
A
Set the MB key on the new card DOWN.
Insert the new GT card into the TSWM.Extract the GT card to be replaced 
from the TSWM.
Set the MBR key on the new card DOWN.
On the GT card to be...

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Note:
The system changeover of GT can be executed also by using the CMOD command. For details, refer to
Chapter 8, Maintenance Commands.EMA SUP lamp on the EMA card goes
OFF.
System Changeover
 Replaced GT: STBY to ACT
Mate GT: ACT to STBY
Check the following lamp indications on
the new GT card and the DSP of the CPR
which controls the GT.
 OPE/MB (GT card) = Steady-green
 CPU OPE (CPU DSP) = Steady-green
 IMG0-3 (CPU...

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2.3.2 TSW Card Replacement Procedure
The TSW (PH-SW12) card is located in the Slot Nos. ranging from 12 to 19 within the TSWM.
Equipped with the Time Division Switch (TSW) and Speech Path Controlling Interface (INT), the
card’s main function is to provide a maximum of 8192 × 2048 Time Slot (TS) switching for a desig-
nated single IMG. Because a single TSW card only enables the TS switching associated with a single,...

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Figure  4-16    Syste m Bloc k Diag ram (TSW and Ot her Speech  Path Echelo ns)
IMG0
TSW I/O BUS
TSW I/O BUS
CPR 0CPR 1
TSW 00
GT 0
GT 1
CPU 1
TSW 10
TSW 01
TSW 11
TSW 02
TSW 12
TSW 03
TSW 13
DLKC 1DLKC 0PLO 1
PLO 0
ISAGT
LANILANI
ISAGT
LANILANI
ISAGT: PZ-GT13 LANI:  PZ-PC19 GT:  PH-GT09 TSW:  PH-SW12 MUX:  PH-PC36
DLKC:  PH-PC20 PLO:  PH-CK16/17
CPU 0
PCM HWPM BUSPCM HWPM BUSPCM HWPM BUSPCM HWPM BUS
MUXMUXMUXMUX Line/Trunk...