Maintenance; Card Enclosure; System Switches; Circuit Cards - Mitel SX-5 Manual

troduction to the technical information contained 3. PHYSICAL DESCRIPTION
in this section.
2. GENERAL DESCRIPTION
Card Enclosure
3.01 The SX-5 consists of a single enclosure,
containing the printed circuit-cards. with a
The SX-5 is a
and elec- lock&le access door on the right-hand The
aOn'c
communiutions system
overall dimensions of the system are shown in
employing solid-state space division switching,
Ag 3-1. The toW weigM
of the
system is 12
*Ored
progpn The 'ystem can
lbs. (5.5 kg). AII connections to the system enter
cornmodate two
Office six at the bottom of the SX-5 access door and are
extensions The SX-5 is compatible with most
directly on the the
existing Private Branch Exchanges (PBX's), and
h.nd edge
of me
Central Off ice (CO) equ~pment The system pro-
vides
Simultaneous use of DTMF and Rotary Dial
extensions
DTMF to Dial Pulse Conversion
Direct Trunk Select or Trunk Group
Operation
Optional reserve power unit
2 0 2 The SX-5 consists of a single cabinet (see
Fig 2- 1
),
holding the switching circuitry
and power supply. The Main Card, which contains
the switching circuitry, is accessible at two levels.
The first level of entry allows access to the
terminal strip, LED'S,
and
system switches The
second level of entry allows the replacement of
modules by a qualified technician An equipment
layout is shown in A g
2-2
203 The SX-5 is powered by 1 15 Vac (230
Vac optional) fed through the power cable
from a commercial outlet For further power de-
tail refer to 9.30.
Maintenance
\
2 0 4 The SX-5 is shipped fully equipped from
the factory. In case of a malfunction, main-
tenance can be simplified to system replacement
or, if module faults are identified, the second
Ievel of entry allows module replacement by a
qualified technician.
Note: The second level of entry should only be
attempted by a qualified technician
Page 2
System Switches
3.02 The SX-5 has two system switches locat-
ed on the upper right-hand side of the
Main Card The top most switch is the Program-
ming Switch, Switch 2 (SW2). This switch enables
programming and is also used to reload the
system default data Switch 1 (SWI) is located
directly below SW2 This switch enables either
Direct Trunk Select or Trunk Group Operation
The system Reset Button is positioned below the
system switches
Circuit Cuds
3.03 A H printed circuit
cards
employed in the
system are identical in construction and
consist of a fiberglass board with printed circuit
patterns on both of its faces Table 3-1 lists the
card
types, their dimensions and weights.
TABLE 3-1
CARD TYPES
C u d Type
Main Card
Power
Supply Card
Trunk Module
Memory
Module
Dimensions
11.1 i n x 9.7 in
282
mm x 246 mm
2 5 in x 9.7 in
64 mm x 246 mm
6 in x
4.38 in
152 mm x 11 1.3 mm
7.0 i n x 4.0 i n
178 mm x 102
mrn
Weight
1.19 Ib
0.54 kg
0.56 Ib
0.26 kg
0.37 Ib
0.17 kg
0.3 1 Ib
0.14 kg