Mitel SX-200 Documentation page 604

SECTION MITL91 OS/91 1 O-096-315--NA
3. PHYSICAL DESCRIPTION
General
3.01 The console consists of two major assemblies: an upper and a
lower assembly. Each major assembly consists of the minor
assemblies (see Figures 3-l(a) and 3-l(b)) described in the following
paragraphs. The overall dimensions of the console housing are 349
mm (13.8 in.) wide, 236 mm (9.3 in.) deep and 173 mm (6.8 in.) high.
Upper Assembly (Figure 3-l (a))
3.02
(a)
W
(a
03
W
(9
(9)
The upper assembly consists of the following parts:
KEYBOARD PCA. A PCB assembly with 30 buttons (each incor-
porating a LED), a DTMF dial pad and a cable harness, the free
end of which plugs into the motherboard assembly. See Figure
4-l(b) for the button layouts.
KEYBOARD CRATE. A molded plastic structure designed to
physically support the keyboard PCA.
HOUSING TOP.
The plastic moulded top of the console hous-
ing.
TOP SHIELD. An aluminum plate made to fit under the top
cover, to provide a path to ground for static discharge.
DISPLAY WINDOW. A protective window for the display graph-
ic panel. It is removable for the purpose of applying designa-
tions to the Busy Lamp Field.
DESIGNATION STRIP COVERS. Three transparent covers for
the key designation strips. They are removable for the purpose
of changing the button designations. One cover is also provided
for the console telephone number insert.
KEYBOARD DESIGNATION STRIPS.
Printed strips which are
provided in three standard forms - Commercial, Hotel/Motel
and Maintenance - together
with optional individual labels to
allow a change in the standard button designations.
Lower Assembly
(Figure 3-1 (b))
3.03 The lower assembly consists of the following parts:
(a) MOTHERBOARD PCA. A PCB assembly which holds the main
console circuits, power supply and processor. Connectors are
provided into which the display PCA, the keyboard PCA, the
speaker and handset jack leads are plugged. The PCB assembly
also has the connector installed which extends the console
circuits via the connectorized cable assembly to the PABX sys-
tern. The ringer volume control and cutover switch are also
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