NEC Neax 2400 Ipx System Operations And Maintenance Manual

NDA-24307 CHAPTER 4
Page 273
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
Figure 4-3   How to Replace the CPU
..... .....
12
34
567
812
34
567
812
345A
SLOT No.    0 1 2 3
45 6
26E
..... .....
12
34
567
812
34
567
8
12
345A
SLOT No.   
0
1
2
3
4
5
6
26E
CPR
LPM
IMG 0 

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
Replacement Procedure
Note:ACT/STBY of CPR can also be performed by using the CMODI/CMOD command. For details, refer to
Chapter 8, Maintenance Commands.
System Changeover of the CPU from 
AC T  to ST B Y m od e.
IMG0 lamp on the DSP begin to flash 
green.
Check the mate CPU’s lamp indications:
At the ISW
CPU OPE=Steady green
IMG0 ~ IMG3=Steady green
at the LN
CPU OPE=Steady green
IMG0 ~ IMG3=Flash green
Note:
IMG2 - IMG3...

NDA-24307 CHAPTER 4
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Refer to Figure 4-2 for 
CPR face layout.
Refer to Figure 4-2 for 
CPR face layout.
Refer to Figure 4-3 to
replace the CPU.
Cables to be disconnected
Ether cable: UTP CTG5 ST CA-n
Note:
 The kind of Ethernet cable may vary, 
Disconnect power cables from the OUTPWR
connector and INPWR connector on PZ-PW92.
Disconnect Ethernet cables from the front
connectors on...

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Refer to Figure 4-3 to replace
the CPU.
Refer to Circuit Card Installation
Into New CPR procedure in this
section.C
B
Extract the CPR from the LPM.
Mount the ISAGT (PZ-GT13/PZ-GT20) and 
LANI (PZ-PC19) cards onto the new CPR. 
Then, insert the new CPR into the LPM. 

NDA-24307 CHAPTER 4
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Note: Do not connect the cable for the 
Connect the disconnected bus cables to the
front connectors on the PZ-GT13/PZ-GT20.
Turn ON the SW key on PZ-PW92.
Connect the disconnected power alarm cable
to the PALM connector on PZ-PW92.
D
C
Connect the disconnected Ethernet cables
Connect the disconnected power cables to 
the OUTPWR and INPWR connectors.
PALM connector...

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
EMA SUP lamp on the 
EMA card goes OFF.
IMG0 lamp on the DSP 
flashes green.
Flip the MBR key on the DSP of the new 
CPR from ON to OFF.
END
D
Turn OFF the EMA-SUP key on the EMA
(PH-PC40) card.
Confirm that IPL has completed successfully.
Initial Program Load (IPL) 
starts automatically.
MBR(DSP)
IMG1 IMG2 IMG3 CPUOPE WDT IMG0
12
34
567
8
OFF
12
34
567
8
OFF
12...

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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
Circuit Card Installation Into New CPR
This procedure shows how to install the new CPR into the LPM.
(1) Detach the front panel of the new CPR by using the Phillips screwdriver to remove
the four screws, as shown in Figure 4-4. Then, lift the top cover by removing the
eight screws.
Figure 4-4   Removal of Front Panel and Top Cover From CPR
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Top Cover
CPRFront Panel 

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
(2) Insert the ISAGT (PZ-GT13/PZ-GT20) and LANI (PZ-PC19) cards into the
following slots of the new CPR (refer to Figure 4-5):
ISAGT (PZ-GT13) →Slot 6 (ISA)
ISAGT (PZ-GT20) →Slot 5 (ISA) (When LN has more than two IMGs) 
Note
LANI (PZ-PC19) →Slot 0 (PCI) (For Fusion Link)
LANI (PZ-PC19) →Slot 1 (PCI) (When connecting MAT via 10-BASE T and PCI buses)
LANI (PZ-PC19) →Slot 3 (PCI) (When LANI for Fusion Link is in dual...

NDA-24307 CHAPTER 4
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
(3) Reattach the top cover by fastening the removed eight screws. Then, reattach the
front panel by fastening the removed four screws. Refer to Figure 4-6).
Figure 4-6   Reattachment of CPR Top Cover and Front Panel
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
Top Cover
CPRFront Panel 

CHAPTER 4 NDA-24307
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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
(4) After turning ON the MBR key on the DSP of the new CPR, insert the new CPR into
the LPM as shown in Figure 4-7. Then, fasten the retained four screws.
Figure 4-7   Accommodation of New CPR Into LPM
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
CPR LPM