Maintenance - Bell System Practices 2636CA Service

SECTION 502-612-4 1 0
be connected as shown in Fig. 5.
busy lamp, install a D-180463 Kit of Parts (ordered
separately), consisting of •819040338• (P-90D033)
Printed Wiring Board Assembly and 840361836 plug
assembly (light beige).
shown in Fig. 3. Install the wiring board and plug
assembly as follows:
(1) Remove set housing.
(2) Loosen screws on dial mounting plate, move
mounting to left and lift out.
(3) Remove right-hand dial mounting screw.
(4) Place dial mounting screw through hole in
wiring board and replace screw in dial.
(5) Connect plug assembly to chaining switch
of third module (2636-type) or fifth module
(2637-type) and terminate (G-V) and (V-G) leads
of plug (Fig. 3). Insulate and store unused plug
leads.
(6) Replace and secure dial mounting plate.
Note:
If more than one busy lamp is required,
order a 6C KTU and use busy lamp control
circuit as shown in Fig. 5.
A D-180411 Kit of Parts is required when
2.09
Priority Hold
is to be furnished.
as follows:
(1) Assemble kit of parts by connecting contact
strips to 635A5C key.
hold position on key.
(2) Disconnect all mounting cord plugs and the
two contact strips [sets equipped with D120K
Page 2
For a single
Connect kit of parts as
Install
Install pink plug in
(MD) or D200S (MD) mounting cord] from the
key in the second module.
replace with 635A5C key from kit of parts.
(3) Reterminate contact strip leads and connect
mounting cord plugs, with the exception of
the white plug which is insulated and stored.
Note:
Contact strips are not required with
sets equipped with D120M or D200AA mounting
cords.
( 4) Rearrange wiring per Fig. 4.
Hold key in first module is used as regular hold
I Hold.
and if required
Priority Hold.
for
When required, these sets may be equipped
2.10
with a polarity guard.
should be installed only when specified by local
instructions for end-to-end signaling purposes when
battery and ground reversals are encountered.
•819051970• (P-90Dl97) guard assembly must be
separately ordered and connected as shown in Table
E.
3.

MAINTENANCE

For maintenance information, refer to Division
3.01
502, section entitled 630, 1630, and 2630
Series Telephone Sets - Common Installation and
Maintenance Information.
such as dials, keys, ringers, etc. are covered in
sections pertaining to the particular item.
Do not use solvents to clean plastic parts
3.02
of these sets. Use a damp cloth only.
discolored, replace part.
Remove key and
Second hold key is used
Polarity guards
A
Individual components
If