3.10
When using speakerphone with telephone
sets equipped with the new line switch
assembly, make wiring changes shown in Table
H. The new line switch can be identified by two
additional leads which are (BL). •This modification
is not required on sets equipped with old type line
switches
.•
4.
MAINTENANCE
4.01
Maintenance of the 830- and 2830-type
telephone set should be limited to checking
for loose or broken connections and replacement
of items per local instructions.
4.02
Early manufactured cords in neutral light
pearl-gray (-82) and dark gray-brown (-83)
have been MD. All new mounting cords will be
satin-silver ( -87).
4.03
Current sets are equipped with a PIE ringer
which does not have the (S-R), (S), and (BL)
leads. For maintenance purposes, either the PIE
or PIA ringer may be used. (If PIA ringer is
used, insulate and store the unused leads.)
4.04
For maintenance of keys, buzzers, dials,
speakerphone components, and polarity guard,
refer to appropriate sections pertaining to these
items.
4.05
The current production 647-type keys have
been modified for easy lamp replacement
by merely removing the lamp cap and inserting a
553-type tool through the hole in the top of the
button. In early production models it is necessary
to remove faceplate, key collar, and button for
lamp replacement.
Telephone sets should NOT be carried
by the handset cradle. Line switch
failure may be caused by applying
excessive strain to the handset
cradle and the line switch mounting
arrangement.
5.
CONNECTIONS
Due to the limited number of mounting
cord conductors the 830- and 2830-type
t e l e p h o n e s e t s d o n o t f o ll o w
stand a r d wiring arrangements
(Fig.
7
through 12).
ISS
8,
SECTION
503-701-101
5.01
To provide mounting cord leads for illuminating
the HOLD button, the ringer or buzzer leads
must be used, meaning only two of the three options
(ringer, buzzer, or hold lamp) may be provided at
the same time.
5.02
To provide station busy lamp modify the
telephone set per Table E.
The 533K
(preferred), KS-2I765LI, or KS-I5724LI diode is
used to prevent false busy signals and must be
ordered and installed separately.
5.03
To provide priority hold
(I
HOLD) modify
the telephone set per Table F.
5.04
To provide 3-type speakerphone leads in
the mounting cord, the buzzer leads along
with the lamp and lamp ground leads from the 8th
and 9th key buttons must be used. An auxiliary
DIOR cord may be used if these leads are not
available.
For connections for all sets, refer to
Section 5I2-620-485 and •Table H
.•
5.05
To provide 4A speakerphone connections,
refer to Section 5I2-740-470 and •Table H
.•
5.06
To provide polarity guard for all 2830-type
telephone sets except the 2830DM, refer to
Table D.
The 2AI matrix block is used for a
polarity guard for the 2830DM telephone set (see
5.07).
5.07
The 2AI matrix block (ordered separately)
provides the polarity guard function to
telephone set with multiline conferencing via
multibutton depression. The matrix block consists
of a 66-type molded plastic connecting block,
containing quick-connect terminals wired and equipped
with eight diode bridges for eight lines. The matrix
block is connected between the line circuit and
the station cut-down field. For connections to the
2AI matrix block, refer to Table G.
If a station requires line ringing on
a particular line, connect the ringing
leads from the key telephone set to
the appropriate terminals on the LINE
SIDE of the matrix block, not to
the station side.
5.08
For schematic information, refer to Fig. 7
through I2.
Page
5
BSP
Scanned by FranR Harrell, (Cowboy Frank) Castle RocR, Coloraao Oct OS, 2012
