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Printed Circuit Boards
This chapter provides procedures for the installation of
Strata
system printed circuit boards (PCBs). It
includes installation instructions, optional configuration
information, wiring, and programming considerations
for each PCB.
Install PCBs only after installing the base cabinet and,
if
applicable, expansion cabinets per Chapter
Cabinet Installation.
Note:
Be sure the power supply has been tested,
and the ground has been checked.
PCB model numbers end with the letter “A,” but in this
document the
“ A
is deleted because
it
is redundant.
Examples: PCB model number
is written
“PDKU,”
is written
4.1
Inspection, Packaging and
4.1.1 Inspection
When the system is received, examine all packages
carefully and note any visible damage. If any damage
is
found, do not open the packages. Contact the
delivery carrier immediately and make the proper
claims.
Storage
After unpacking (and before installing), check the
system against the packing list and inspect all
equipment for damage. If equipment is missing or
damaged, contact your supplier immediately.
Be sure to retain original packaging materials for re-
use when storing or transporting system hardware.
Packaging
and
Storage
CAUTION
When handling (ins falling, removing,
examining) PCBs, do not touch the back
(soldered) side or edge connector. Always
hold the
PCB
by its edges.
When packaging and storing the system, remove
PCBs from the system cabinet (the power supply may
remain installed in the cabinet for storage and
shipment). PCBs should be packaged in their original
antistatic bags for protection against electrostatic
discharge. Be sure to package equipment in its
original shipping containers.
4.2
PCB Installation Overview
The Strata
system base and expansion
cabinets are shipped empty. The power supplies and
PCBs are not installed at the factory. PCBs must be
installed i n accordance with the configuration
information obtained and developed in Chapter
Configuration. Refer to Chapter 3- Cabinet
Installation to install power supplies.
4.2.1
PCB Installation Considerations
The base cabinet has eight slots. The first two slots,
labeled
and “RCTU” are reserved for the
common control unit and future feature upgrades. The
remaining six slots (labeled
and
are universal and capable of hosting
any of the station, line, and option interface PCBs
compatible with the
systems. (If needed,
must be installed in slot 11
.)
The expansion cabinets
six universal slots,
labeled
where
the blank space
of
the label represents the number of
January 1996
4-1
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