Bell System Practices 902A1 Quick Start Manual page 3

If these telephone sets are to be used with
3.04
lAl or 1A2 key telephone system the set
must be modified by moving the brown (BR) line
switch lead from L2 to G of network.
When needed a polarity guard can be mounted
3.06
to the network mounting bracket. Refer to
Table D for connections.
4. REMOVAL OF TELEPHONE
COMPONENTS
When it is desired to discontinue telephone
4.01
service of these DESIGN LINE telephone
sets, proceed as follows:
Note: Remove telephone company-owned
components that can be easily removed. Refer
to Fig. 2.
BSP 503-200-102-i01_1977-06-03.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado
LINE AND RINGER CONNECTIONS
(902A1 TELEPHONE SET)
WIRE
INDIVID.
OR
COLOR
LEAD
BRIDGED
R
Inside
G
Wire at
Conn Blk
y
BK
R
623P4 G
Line Cord
y
Jack Assy
BK
R
S·R
Ringer
s
BK
w
BL
Line
BL·W
Switch
BR
s
* Insulated and stored.
COMPANY-OWNED
TABLE B
RING
NO
OR
PARTY
IDENT
GROUND
R R R
G G G
y y y
B B B
A A L1
Ll Ll A
G G G
L2 L2 L2
K K K
• • •
•
* *
Ll G G
F F F
c c c
A A A
L2 L2 L2
L2 L2 L2
(1) Unplug cords from set.
Note: When both receiver and transmitter
caps are removed the two-piece handset shell
falls apart.
(2) Unscrew receiver cap and remove LBl
receiver unit.
(3)
Unscrew transmitter cap and remove transmitter
unit.
(4) Unscrew two (2) screws from top and six
(6) screws from bottom of base housing and
separate the two-piece base housing.
(5) Remove line switch.
Feb 08, 2012 18:19:27
ISS 1, SECTION 503-200-102
TIP PARTY
IDE NT
GROUND
1000it 2650it
R R
G G
y y
B B
F F
L2 L2
G G
• •
K K
•
Ll
•
Ll
G G
B B
•
*
• •
c c
A A
Page 3