NEC SV8500 Operation And Maintenance Manual - page 723
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CHAPTER 6
Routine Maintenance Procedure
2.1 Test Equipment and Tools
Test equipment and tools needed for routine maintenance test are shown in the list below.
2.2 Routine Maintenance Procedure
Daily, monthly and quarterly maintenance procedures are explained in this section.
Collect the fault message, and operate the fault diagnosis and fault repair before the routine maintenance.
(1) Daily Maintenance
(a) Check the temperature and relative humidity in the switch room.
(b) Check the operating status of PCPro.
(c) Check to see if a system message indicating a fault is displayed.
(d) Check to see if there is any lockout station.
(e) Check whether the FANU is operating normally.
(2) Monthly Maintenance
(a) Generate an alarm and check whether an indication appears on the Telephony Server alarm lamp.
(b) Check trunk circuits individually. Also check the RGU circuit in the PWR Supply of each Module.
(3) Quarterly Maintenance
(a) Check the System
Table 6-1 List of equipment and tools for routine maintenance
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 voltages of the rectifier and the battery.
4
Phillips Screwdriver
A screwdriver is used when replacing the fan
with a spare.