NEC Neax 2400 Ipx System Operations And Maintenance Manual

NDA-24307 CHAPTER 6
Page 563
Issue 1
SYSTEM OPERATIONS
Table 6-19  Start-Up Procedure When Basic and Application Software is Installed
ACT IO N7SEG LED/OPE LAMP/KEY 
SETTINGS
STATUS LED (right) on 
the DSP of CPU is ON.
STATUS LED (right) on 
the DSP of CPU is ON.
STATUS LED (right) on 
the DSP of CPU is ON.
CPU OPE lamp on the 
DSP of active CPU 
lights steady green. IMG0-3 
lamps flash.
For lamp indications, refer to 
Table 6-10.
STATUS LED (right) on 
the DSP of CPU is ON 
(ON LINE).
Press the CPU RST...

CHAPTER 6 NDA-24307
Page 564
Issue 1
SYSTEM OPERATIONS
Table 6-19  Start-Up Procedure When Basic and Application Software is Installed (Continued)
ACT IO N7SEG LED/OPE LAMP/KEY 
SETTINGS
Back up your Office Data using the MEM_HDD/MEM_HDD_N 
command.
To perform necessary system intialization, refer to Table 6-13, 
System Initialization with Office Data Loading. Set the SENSE switch at “2” (DM Load Restart) on the DSP of 
active CPU.
Enter your Office Data.
END
A
If necessary, repeat the above steps for...

NDA-24307 CHAPTER 6
Page 565
Issue 1
SYSTEM OPERATIONS
Table 6-20  Start-Up Procedure When Basic, Application Software and Office Data is Installed
ACT IO N7SEG LED/OPE LAMP/KEY 
SETTINGS
STATUS LED (right) on 
the DSP of CPU is ON.
STATUS LED (right) on 
the DSP of CPU is ON.
STATUS LED (right) on 
the DSP of CPU is ON.
STATUS LED (right) on 
the DSP of CPU is ON.
Press the CPU RST button 
on the DSP of active CPU.
or
Turn OFF the SW on the
PZ-PW92 of active CPU and 
turn it ON again. Set the SENSE...

CHAPTER 6 NDA-24307
Page 566
Issue 1
SYSTEM OPERATIONS
For lamp indications, refer to 
Table 6-10.
STATUS LED (right) on 
the DSP of CPU is ON. 
(ON LINE)
Table 6-20  Start-Up Procedure When Basic, Application Software and Office Data is Installed (Continued)
ACT IO N7SEG LED/OPE LAMP/KEY 
SETTINGS
 The system starts up again.
END
A
If necessary, repeat the previous steps for all remaining nodes.
ATTENTIONContents
Static Sensitive
Handling
Precautions Required 

NDA-24307 CHAPTER 7
Page 567
Issue 1
CHAPTER 7 ROUTINE MAINTENANCE PROCEDURE
1. GENERAL
When a fault has occurred in the system, (for example when a fault has occurred to No. 1 circuit on the 16LC
card), the stations connected to No. 1 circuit become unserviceable. When the 16LC card has been replaced with
a spare to analyze the cause of the fault or to repair the fault, other normal lines also become unserviceable. As
in this example, even when the fault is restricted to a single component, it very...

CHAPTER 7 NDA-24307
Page 568
Issue 1
ROUTINE MAINTENANCE PROCEDURE
Figure 7-1   Flow of Procedures
1.2 Required Test Equipment and Tools
Table 7-1 shows the tools and equipment required for test procedures.
Table 7-1  Test Equipment and Tools
NO. TEST EQUIPMENT/TOOLS PURPOSE REMARKS
1 Telephone Set A telephone set is used when performing connection tests 
on trunks, etc.
2 Blown Fuse A blown fuse is used when performing alarm tests.
3 VOM  Digital  Meter VOM digital meter is used when checking output...

NDA-24307 CHAPTER 7
Page 569
Issue 1
ROUTINE MAINTENANCE PROCEDURE
2. ROUTINE MAINTENANCE PROCEDURES
This section explains general routine maintenance procedures to be performed on a daily, monthly, and
quarterly basis. Table 7-2 lists each procedure according to the time each procedure is to be performed. Use
the Reference Section to locate the detailed procedure.
Table 7-2  List of Routine Maintenance Procedures
TIME PROCEDURE REFERENCE SECTION REMARKS
Daily Check the temperature and relative humidity...

CHAPTER 7 NDA-24307
Page 570
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ROUTINE MAINTENANCE PROCEDURE
3. ROUTINE MAINTENANCE PROCEDURES-DETAILED EXPLANATIONS
This Section provides detailed explanations of the routine maintenance procedures.
Table 7-3  List of Routine Maintenance Procedures
SECTION NO. CONTENTS OF WORK REMARKS
3.1Check of Ambient Conditions in the Switch Room
3.2Alarm Check
3.3MAT/Printer Check
3.4Collection of System Messages
3.5Display of Locked-out Station
3.6FAN Unit Check
3.7Alarm Tests
3.8Main Power System Check...

NDA-24307 CHAPTER 7
Page 571
Issue 1
ROUTINE MAINTENANCE PROCEDURE
3.1 Check of Ambient Conditions in Switch Room
Check the room temperature.
Check the humidity in the room.
If the temperature or the humidity is 
outside the allowable range, adjust the air 
conditioner.Check whether the room temperature is within 
the range of 5°C (41°F) to 30°C (86°F).
Check whether the relative humidity in the 
room is within the 15% to 65% range. START
END 

CHAPTER 7 NDA-24307
Page 572
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ROUTINE MAINTENANCE PROCEDURE
3.2 Alarm Check
Check alarm indications on the TOPU.
If an alarm is indicated Check whether the alarm lamp on the power 
supply of any module is lit.
Check whether an alarm lamp is lit on any 
circuit card(s).
Alarm recovery Refer to Chapter 5, diagnose the alarm and 
perform the indicated recovery procedures. START
END