AT&T Bell System Plant Series Service Manual

BELL SYSTEM PRACTICES
Plant Series
SECTION 502-610-407
Issue 1, June 1970
AT&TCo Standard
SERVICE
630DA AND 631 DA TYPE TELEPHONE SETS
1.
GENERAL
1.01
This section contains connection and main-
tenance information for 630DA and 631DA
telephone sets. Mounting cords of these CALL
DIRECTOR® type sets terminate in individual
plugs connected to the rear of the keys.
2. CONNECTIONS
2.01
The 630DA and 631DA sets are equipped
with a 635A5C (5 line pickup and hold) or
635AD5C ( 4 line pickup, cutoff, and hold) in the
first module position. Contact strip assemblies
differ between the two keys. If ordered for field
replacement, the 635AD5C is furnished with a
piggy-back adapter to which the slate mounting
cord plug is connected. The contact strip assem-
blies (840151039 and 840151047) must be sep-
arately ordered to replace the P-21F800 and
P-21F801 assemblies.
2.02
Termination of the mounting cord conduc-
tors on a per line basis in individual plugs
permits rearrangement of line appearances either
in the set or at the key equipment distribution
point.
2.03
Contact strips are not extended to the
chaining circuit. This requires a second tip
and ring conductor to each module (except the
last). See Fig. 2, sheets 1 through 5.
2.04
Sets may be equipped for speakerphone by
the addition of a 679A transmitter in the
3rd (630DA) or 5th (631DA) module and re-
placement of the SR dial with an 8C dial. Fig. 3
and Table D show wiring of sets with speaker-
phone and necessary field modifications.
2.05
All line pickup key positions are converti-
ble to signaling or common signaling ar-
rangements by removing the P-28E773 detail
from key positions involved and making the
necessary wiring changes per Table C.
2.06
A KS-8109 type or KS-20419 buzzer may
be installed when a second audible signal
is required. Use (S-Y) and (Y-S) mounting cord
conductors from (0-W) binder stored in the sec-
ond module.
2.07
A D-180411 Kit of Parts is required when
Priority Hold is to be furnished. Install
as follows:
(1) Assemble kit of parts by connecting con-
tact strips to 635A5C key. Plug pink plug
into hold position on key.
(2) Disconnect all mounting cord plugs and the
two contact strip leads from the second
module, remove key and replace with 635A5
key.
( 3) Reterminate contact strip leads and con-
nect mounting cord plugs with exception
of white plug which is insulated and stored.
( 4) Rearranged wiring per Fig. 4.
Hold key in first module is used as regular hold
or if required, I Hold. Second hold key is used
for Priority Hold.
3.
MAINTENANCE
3.01
Maintenance of components of these sets
such as dials, ringers, etc. is covered in
sections pertaining to the particular component.
3.02
Do not use solvents to clean plastic parts
of these sets. Use a damp cloth only. If
discolored, replace part.
©
American Telephone and Telegraph Company, 1970
Printed in U.S.A.
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