Karel DS200, Technical Reference And Installation Manual

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DS Series PBX Technical Reference And Installation Guide
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XIX. TESTING THE SYSTEM AND
TROUBLESHOOTING BASIC PROBLEMS
It would be useful to test the basic functions of the exchange, after it has been put into
operation. It would be even more useful for detecting some possible errors in advance, if
those tests are done before the line cables are attached to the main distribution frame.
When the system has been put into operation, it detects the configuration by carrying out an
automatic scan as the first step, as mentioned in the previous chapter.
Visual test, which is the first test step, should be done after that scan. When the scanning is
over, the LEDs, which are on the front sections of the entire modules that have been installed
in the system, are checked. Modules and normal behaviors of the LEDs pertaining to them
are as follows:
Module LED
CPU200(S) It blinks.
Redundant CPU200 It blinks fast.
CCU It blinks.
UTIL200 It blinks.
Module Upper LED Lower LED
EX200 It is on. It is on.
EVM200L It is on. It blinks.
Module -48V +5V MAINS POWER
SPS200M It is on. It is on. It is on.
Module - 48 VDC + 5 VDC - 5 VDC
SPS248 It is on. It is on. It is on.
Module VOUT FAULT MAINS POWER
SPS200 It is on. It is off. It is on.
In case there are more than one SPS200 in the system, while the LEDs of one or more
SPS200’s are on, the others may be off. This signifies that only the SPS200’s whose LEDs
light up carry the system load at that moment. The ones with the LEDs off are put into
operation automatically in case the load increases. Yet, the 220 VAC on/off switch of
SPS200 always keeps on lighting up as long as SPS200 is operative. If that the light in this
switch goes off, then this signifies that the SPS200 is defective. In that case, the input fuses
must be checked and replaced at once, if the problem is with the fuses. If, on the other hand,
the fuses seem to be intact, then the SPS200 must be replaced immediately.