Service Manual

GSM-205-423
Pre-power up checks
31st Oct 01
Installation & Configuration: Horizon macro indoor
68P02902W08-B
CONTROLLED INTRODUCTION
Inst. 4–3
Pre-power up checks
Overview of
pre-power up
checks
WARNING Before powering up the equipment, the power system
checks provided in this section must be performed.
This section contains procedures for testing the power system prior to applying
power to the cabinet.
WARNING
230 V is present within the cabinet, when the cabinet is
directly connected to an ac supply.
Earth straps are not to be worn during the commissioning
of the ac and dc power system, and watches and other
jewellery should be removed.
Only insulated tools should be used.
CAUTION This equipment contains CMOS devices and is vulnerable
to static discharge. Although the damage may not be
immediately apparent, CMOS devices may be damaged in
the long term due to mishandling causing barrier
breakdown.
The approved earth strap (high impedance) must be worn
at all times when adjusting or handling the processor
cards (but see WARNING above, regarding use of earth
straps).
If the cabinet door is kept open for long periods of time
during commissioning, an alternative method of cooling
must be provided to avoid damage to the equipment
through overheating.