MAINTENANCE
3.1 TEST EQUIPMENT AND MAINTENANCE AIDS
The following items are necessary to carry out maintenance on the systems:
A Multimeter with small test probes, to measure the various test point voltages;
(ii) A Continuity Tester, to check wiring between the main equipment and stations.
(iii) A DSS-6161236-B programming console commonly called TPU-N, Test and Programming
Unit for Commander N-Series Business Systems. This is equipped with a programming
button which places the system in ‘programme’ mode, thus enabling verification and/or
reprogramming of site dependant system data;
(iv) An AMP-Champ connector insertion tool, which is used to terminate the AMP-Champ
connector;
Normal maintenance tools, i.e. Buttinski, Long-nose Pliers, Angle Cutters and Screw
Drivers (both Phillips and straight blade types).
TEST POINTS
3.2.1
Power Supply
There are eight DC voltages supplied for these systems.
N616:
Supply voltages are accessed on the Power Supply Board (PSB-B). Care must be exercised, the
voltages are read on PSB-B terminals (refer to figure 65 and table
r
P S B - B
FIGURE 65 POWER SUPPLY BOARD (PSB-B) TERMINALS
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ISSUE 1