AT&T BELL 2563HB User manual

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BELL SYSTEM PRACTICES
AT & TCo Standard
SECTION 502-543-400
Issue 5, December 1980
SERVICE
2563HB, 2563HBM, AND 2563HBMS TELEPHONE SET
MAINTENANCE AND CONNECTIONS
1. GENERAL
1.01 This section contains information for the
2563HB (MD), 2563HBM (MD), and 2563HBMS
telephone sets equipped with headset jacks
and
12-button TOUCH-TONE® dial for use with optional
operator's headset.
1.02 This section is reissued to:
• Add
the 2563HBMS telephone set
• Show 2563HBM telephone set MD
• Add information on the D-181006 Kit of
Parts (contains an 840364376 polarity guard
and installation instruction sheet), Table A.
2. MAINTENANCE
A. Replaceable
Components
2.01 Field replaceable items are listed under
identification in the appropriate Reference
section in Division
502.
2.02 Maintenance of handsets and ringers is
outlined in sections covering these components.
B. Loose Card Retainers
2.03 The 812558039 (P-25E803) and 802695619
(P-269561)
are nonadjustable card retainers.
The P-25E785 (MD) card
retainer is replaced by
812558039 (P-25E803)
..
2.04 If P-25E785 (MD) card retainer becomes
loose on the faceplate
and the number card
or designation strip slips, they can be tightened
as follows.
(1) Remove faceplate from set.
(2) Remove card retainer from faceplate.
(3) Bend the four
arms of the retainer so that
more pressure will be applied to the number
card and designation strip. The bends should
be made approximately 1/2-inch in from the tabs
on
the ends of the arms and in the opposite
direction from
the factory bent tabs.
(4)
Install the card retainer on the faceplate
and insert the number card and designation
strip.
(5)
Install faceplate on telephone set.
Note: If adjusting the arms of the retainer
does not result in sufficient holding power,
replace the card retainer.
C. Removing and Replacing Housing
2.05 Sets without exclusion.
(a)
To remove housing, loosen captive screws
in base of set. Lift housing up
and toward
front of set.
(b) To replace housing, guide lower front of
housing over pushbuttons, align housing with
base of set,
and gently press housing into place.
Tighten captive screws in base of set.
2.06 Sets with exclusion.
(a)
To remove housing, pull up exclusion plunger
to its operated position, loosen captive screws
in base of set, and lift housing up and toward
the
front of set.
(b)
To replace housing, guide lower front portion
of housing over pushbuttons, align housing
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
Printed in U.S.A. Page 1

SECTION 502-54 3 -400
EXCLUSION
SWITCH
Fig . 1-. 2563HBMS Telephone Set With Polarity Guard In s talled.
with base of set, and gently press housing m
place.
(c) Depress exclusion plunger. With
slight
pressure it should snap into its unoperated
position.
(d) Operate exclusion plunger several times
to
insure proper operation. Tighten capt i ve
screws in base of set. ·
D. Exclusion Switch
2. 07 Perform no field maintenance on exclusion
switch and plunger
other than cleaning
contacts
wit h a 265C tool.
Page 2
2. 08 Replace set or exclusion switch assembly if
any of the following exclusion switch
requirements cannot be met.
(a) Exclusion plunger should remain in the
operated position when pulled up to the full
extent of its stroke.
(b) The plunger should r
eturn to the fully
depressed position when
handset is replaced.
(c) With housing removed, normally closed
contacts of the exclusion switch should have
perceptible follow when operated manually.
(d) With housing removed, open contacts of
the
exclusion switch shou ld h ave minimum
separation of 1164-inch; ga uge by eye.

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(G- 8Kl HS (IIUt
®
l "' !t : '""'* ' .® >
AI
(O-Wl
2 (
18 LS c N
® ®
8L (Y-8Rl
44~,--~~----------------------~
2
24
AI
8L
SP
'
!O-W)
(Y-BR)
(BR-V)*
A. WllliOOT I HOLD, Willi OR
WllliOUT BUSY LAMP
(G-8K) HS (BR)*
(Y)
j-
(BR)t
18
LS
c
t /
(G-BK)*
M....,.
ADD STRAP
~
l (Y)*
~
......
H
8. Willi I HOLD, WI lli OR
H -HOLD KEY WllliOUT BUSY LAMP
HS-HEADSET ON-OFF KEY
LS- LINE SWITCH
®-WITHOUT BUSY LAMP
I
®
® ®
G)- WITH BUSY LAMP, USE 533K DIODE OR EQUIVALENT
t -USE D-161488 CONNECTOR
*-LEADS INVOLVED IN MODIFICATION
NOTE:
ALL TERMINALS ARE ON KEY TERMINAL BOARD.
t
Fig. 2-2563HB (MD), 2563HBM, or 2563HBMS
Telephone Set- 1A1 or 1A2 KTS, I Hold
and/or Station Busy Lamp Modifications
E. Mounting Cords
2.09 Cords, designed for use with 636A key
assemblies, feature slotted wafer sections
for each line appearance. This allows easy
rearrangement of lines to pickup buttons.
No field maintenance should be
performed on the plug of plug-ended
mounting cords.
ISS 5, SECTION 502-543-400
(BR)
;L_
/ BL
(Y-BR)
(BR)
44
'
.......
k HS
(BR-Y)~
'V c
/ G OR SG
(Y)
'I' b
LS
19 ' -a
(G-BK)
3
(S-Y)
(BK) FL (R)
N
13 14
H
d
LS
HS
e
(S-R)
9
(Y)
ct
STATION BUSY LA"P
"ODIFICATION 1A KTS
LEAD
FRO"
TO
LINE SWITCH
(Y)
18
SG
(BR)
N 1
HEADSET
(BR) N 1
ON-OFF KEY
(G-BK)
18
SG
FLASH KEY
(R)
9 N
(0-BK) * "
HOLD KEY
( y)
" 9
*INSULATED AND STORED
tNETWDRK TER"INAL. UNDESIGNATED TER"INALS ARE
ON KEY TER"INAL BOARD
H - HOLD KEY
Fl - FLASH KEY
HS - HEADSET ON-OFF KEY
LS - LINE SWITCH
Fig. 3-2563HBM (MD), 2563HBM, or 2563HBMS
Telephone Set Modified for 1A
KTS Station
Busy, Lamp
Page 3

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SECTION 502-543-400
F. lamps and Pushbuttons
2.10 Replace cracked. pushbuttons or collars.
Remove accumulated
dirt or film from lamps,
collars, and pushbuttons with a water dampened
cloth.
DO NOT USE SOL VENTS OF ANY
KIND. If cleaning does not correct binding of
pushbuttons, replace button and collar assembly.
2.11 To replace defective lamp.
(1) Lift lamp from socket with KS-6320 orange
stick.
(2) Align lamp contact surfaces when placing
new lamp in socket.
2.12 The button and collar assembly should be
carefully aligned to avoid interference with
removal or replacement of housing.
G. 636-Type Keys
2. 13 Field maintenance of these keys consist of
cleaningcontacts with a
265C tool or adjusting
with a
363 tool.
2.14 Contact follow and separation is obtained
by using a
363 tool at a point adjacent to
contact spring pile-up. When adjusting
springs-
(a) There should be a minimum spring clearance
of 1/64-inch between contact springs and
those
parts of the key which do not make contact
with springs.
(b) Normally open contacts should make with
perceptible follow on locking keys before key
plunger assumes locked position.
2.1S Replace set if the following requirements
cannot
be met.
(a) When depressed locking plunger should, on
its downstroke, release any previously locked
plunger.
(b) When any pushbutton plunger is released
from its operated position,
it should return
with a snap to its nonoperated position.
(c) An operated key plunger should not release
during downstroke of hold button.
Page 4
(d) An operated key plunger should release from
its operated position
on the upstroke of the
hold button.
H. 241-Type Amplifier
2. 16 Used in telephone sets with headset jacks
to amplify the output of the headset
transmitter. NO FIELD MAINTENANCE SHOULD
BE ATTEMPTED ON 241-TYPE AMPLIFIER.
2.17 Replace the amplifier if it is suspected of
being defective (as evidenced by poor or
no
transmission). When replacing, always use a 241B.
I. TOUCH-TONE Dial
2.18 Check line polarity if no tones are heard in
the receiver when a button is depressed.
The 35-type dial will function only
when the green dial lead is positive
(+) and when the orange-black lead
is negative (- ).
2.19 A dial hand test set connected to line
terminations can
be used to test for defective
dials.
Do not attempt repair of TOUCH-TONE
dials in the field. Replace defective
dials.
J. Handsets
2.20 When special conditions exist the G3- and
G15-type handsets may be replaced by
the
following:
•
G6B (MD) or G6BM handset for impaired
hearing
•
G7B (MD) or G7BM handset for weak speech
• G8B (MD)
or G8BM handset for noisy
locations.
2.21 Refer to Section 501-211-102 for additional
information on these handsets.

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3. CONNECTIONS
3.01 These sets are factory-wired for use with
1A1, 1A2, •6A, or 6B• key telephone system
line circuits and are equipped with a 241-type
amplifier providing headset operation. A
52- or
53-type headset must be ordered separately.
3.02 A D-181006 Kit of Parts containing an
840364376 polarity guard and instruction
sheet should be used with these sets when specified
by local instruction to eliminate the affects of
battery and ground reversals encountered in
end-to-end signaling (Fig. 1 and Table A). Station
busy lamp indication, showing only
that the handset
is off-hook or
that the headset key is in the ON
position, can be provided for 1Al, 1A2, •6A, or
6B• KTS by use of a
533K diode or equivalent•
which must
be ordered separately and connected
as shown in Fig. 2. This connection will not
indicate that a line pickup button is depressed.
Station busy for
lA KTS is a wiring option shown
in Fig.
3.
3.03 The I hold feature of SD-69530-01 can be
incorporated with these sets when used with
1A1, 1A2, •6A, or 6B• KTS. Telephone
set wiring
ISS 5, SECTION 502-543-400
changes are shown in Fig. 2 and key system
component requirements are shown in SD-69530-01.
3.04 Line exclusion feature can be provided by
installation of a
D-179935 Kit of Parts (ordered
separately). Connect as shown in Table
B.
3.05 The set ringer may be connected as a bridged
ringer
on any line if desired (Note 4, Fig. 4,
5, and 6).
3.06 The 2563HB (MD), HBM (MD), and HEMS
telephone sets are factory-equipped with a
KS-20419L1
(10 volt ac only) buzzer.
3.07 The 2563HBM (MD) modular telephone set
(Fig. 5) is similar to the 2563HB (MD) set
(Fig.
4) except the G15A handset with its associated
H4DU cord and
616D jack is used in place of the
hard-wired
G3A handset. The 2563HBMS telephone
set (Fig. 6) is similar to the 2563HBM (MD) set
except for a new line switch and headset jack
which breaks both the tip and ring sides of the
line.
Previous line switch and headset jack
assemblies only broke the ring side of the line.
3.08 To convert the 2563-type telephone set keys
for signaling, refer to Table
C.
840364376 POLARITY GUARD CONNECTIONS
(NOTE)
REMOVE
CONNECT
FROM
TO
POLARITY
NET
NET
GUARD
LEAD
COLOR
TERM.
TERM.
TERM.
Line
w c
Switch
8
Headset
On-Off
8-R
c 8
Key
Dial
BK
RR
T
Polarity
w c
Guard
G
RR
Note: The 840364376 polarity guard comes in the D-181006
Kit of Parts with instruction sheet. The guard should be
installed on any surface having an area equivalent to the
adhesive backing.
Page 5

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SECTION 502-543-400
" R(l)
IAI·IA2
KTS LINE
CKT
'
T (I )
R(2)
T(2)
R(3)
T(3)
R (4)
T(4)
R(5)
T(5)
,- L (I)
IAI•IA2
KTS LAMP
CKT
LG( I)
L(2)
LG(2)
L(3)
LG(3)
L(4)
LG(4)
L(5)
LG(5)
BUZZER
LEADS
["
BZI
"Al-B
IAI·IA2
KTS
'
TO
SIG
GRD
SY BU
L
AMP
A·H
B
A·H
B
A·H·S·SI
B
A·H·S·SI
B
A•H•S•SI
B·BI
R·RI
G·SG
BL
(NOTE I)
¢LIP NO.
2 /
I
8 /
7 /
'
14
j
13
'
20
19
26
25
6
5
~
'
12
II
18
17
/
24
./
23
./
30
29
36 /
35 '
4 j '
3
10
/
9 '
16
/
15
/
22 /
21
'
28 J
27
39
40
38
37 J
I
26
4
29
7
32
10
35
13
38
PART or D50H
NTGCORD
(BL W)
-IR
1")>'
/ (W·BL)
:IT
(BR•W)
;:2R
/ (11-BR)
;:2T
' (O-R)
~3R
(R•O)
;:_3T
L (S-R)
~4R
' (R·S)
;:.•T
/ (G•BK) ;:sR
(BK-G)
_;:5T
-
638A KEY
PU
,
,
"
"
,
3
~(G·W) Ll
(W·G). LG
28
9
....
'(G)
(R)
(G•BK)
FL
14 13
13
HS
(BK) 2
i(S•Y)
(G)
LS
d •
(BL·R) L2
6~
31~
9
~R-R L3
(Y)
18~~------r-~--~~----~
34 (R•BR)
LG
(O•BK) L4
12~
(BK•O) LG
37
(S·BK) L5
15~
40~
(G·Y) 4 (81..)
18~
y KS-20419LI
43 ( •G) (BL) AC BUZZEit
0 LH) ( NOTE 8 I
(O·W) 0
LG
2 M
L(~W~-0~)----~I·H--~-----------.~~~
27"
(s-w)
5
44
~Y-BR)
* 3H (BRI
RT (BK)
er ts) ~At
(STRAP) ._L
(2)SG
CRI
TIA
RINGER
Kt
(S•R)
5300(\.
(NOTES 2 ,4,5, AND 6)
TO
(BL•W)
TABLE B
(w-o)
CNOT!3l
(V•O)
fO·W~
EXCLUDED
'O•V)
STATION
[r
(NOTE I)
CLIP NO.
41
j
R
42
A·H 43
B
44
X 34 '
33
31
'
47
'
SP
48
'
SPARE
32
45
50
'
49
46
Fig. 4-2563HB (MD) Telephone Set, Connections (Sheet 1 of 2)
Page 6
(S R) Ct(O BKl
--
(W)
Ll t (Iii)
"'
EXCLUSION
SWITCH
+
+
PART or D50N
!lTG CORD
46 ( (V-BLI 0:ET
21 ((BL-Vl 0ER
47 ((V-Ol 0EH
22 (CO-VI 0EB
17
((0-Yl *
42
((V-Ol *
41
( (Y-BL) *
49
((V-BRI *
24
((BR-Vl *
16
((BL-Y) *
48 ( (V-G) *
25 ( (S-V) lt
50 ( (V•S) *
23 (
(G-Vl *

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ISS 5, SECTION 502-543-400
(0-BK)
,-----------,
I PART OF 35- TYPE DIAL I
!: I (R)
Tt
IIU (STIW') (NOTE 9) 41
r---------~--~~
(It)
_j
(BL)
at (S-BK)
7
(IK)
6
51 (W-BR)
(R-Gl 8
(G-Vl
8 (W)
(BK-Sl
(BK)
LS
st !Wl
lew-aLl
GNt (W)
2
(BL) (STRAP)
I
I
I
I
(W)
,.-------=------- ...
z§ IBRl
0 0
(G)
RRt (BK)
L ________ _j
(Y-Gl
NOTES:
I, SSE-TYPE CONNECTING BLOCK SHOWN. MOUNTING CORD MAY 8E PLUGGED DIRECTLY INTO
CONNECTOR CABLE. CORD AND PIN NUMBERS fOR CONNECTOR CABLE ARE SAME AS
MOUNTING CORD.
0
3§ (BK)
2. CONNECTIONS FOR TIA RINGER SHOWN. CONNECTIONS FOR NIA RINGER IDENTICAL EXCEPT INSULATE
AND STORE (S) AND (S-R) LEADS.
3. If EXCLUSION fEATURE IS ADDED, CONNECT SWITCH LEADS PER TABLE 8,
4. fOR BRIDGED RINGER ON ANY LINE CONNECT (R) RINGER LEAD TO K Of NETWORK AND
(BK) RINGER LEAD TO Tl~ Or LINE INVOLVED. CONNECT (S) STRAP fROM A Of
NETWORK TO RING Of LINE INVOLVED.
5. If CAPACITOR IS NOT REQUIRED IN RINGER CIRCUIT, MOVE (R) RINGER LEAD TO A Of
THE NETWORK.
S. TO SILENCE RINGER REFER TO APPROPRIATE RINGER SECTION IN DIVISION 501
7. SET MUST BE EQUIPPED WITH A 2418 SERIES II AMPLIFIER IF EXCLUSION FEATURE IS
ADDED.
8. IF HOLD POSI Tl ON LAMP IS REQUIRED USE SPARE PAl R AND TERM I NATE ON LH
AOO LG TERMINALS. '
9. IN SETS MANUFACTURED PRIOR TO JULY 1980 LEADS ON TERMINALS 1 Moll 4
OF 2418 AMPLIFIER WERE REVERSED. WIRE AMPLIFIER AS SHOWN TO PREVENT
TELEPHONE CIRCUIT FROM OSCILLATING.
*- INSULATED AND STORED
t- NETWORK TERMINAL.UNOESIGNATED TERMINALS ARE ON KEY TERMINAL BOARD.
§ • 241B AMPLifiER TERMINAL
P U- PICKUP KEY
H- HOLD KEY
LS- L1 NE Sill TCH
4
v
NETWORK
RCVR
52-0R
53-TYP£
HEADSET
TRMTR
LC
RCVR
HS- HEADSET ON-Off KEY (S44A)
FL- fLASH KEY ( S44A)
2418 AMPLIFIER, SERIESII
(NOTE 7 l
Fig. 4-2563HB (MD) Telephone Set, Connections (Sheet 2 of 2)
Page 7

TCI Library- http://www.telephonecollectors.info/
SECTION 502-543-400
IAI·IA2
KTS LINE
CKT
IAI•IA2
KTS LAMP
CKT
BUZZER
LEADS
IAI·IA2
KTS
~ R (I)
T (I )
R(2)
T(2)
R(3)
T(3)
R(4)
T(4)
R(5)
T (5)
....
L (I)
LG( I)
L(2)
LG(2)
L(3)
LG (3)
L(4)
LG(4)
L (5)
LG(5)
["
BZI
~Al-B
A·H
B
A·H
B
A·H-5•51
B
A·H-5-51
B
A·H-S•SI
B•BI
R-RI
.....
0T
s
G
IG
RD
SY
BU
L
AMP
G·SG
BL
(NOTE I)
CLIP NO.
2
I /
8 /
7
14
13
20
19
26
'
25
6
5 '
12
II
J
18
'
17
/
24 /
23
_/
30 /
'
29
'
36
35
'
4 /
3 /
10
/
9
16
'
15
J
'
22 /
'
21
'
28
'£7
'
39 /
40
38
37
26
4
29
7
32
10
35
13
38
PART Of' 05011
NTGCORO
(BL W)
-lit
""'
(W-BL) ;:1T
(BR·W)
:2R
(w-BR)
:2T
(O-R) ::::.3R
'(R·O)
::::.3T
(S·R)
::::.4R
(R-S)
.: 4T
(G•BK) ;:sR
(BK·G)
:.sT
......
636A KEY
PU
,
,
'"
3 (G·W)
Ll
28~
9
,.,.
-
(G)
(R)
(G-BK)
FL
14 13
I
3
HS
(IlK)
(S·Y)
(G)
4 , 3
HS
2
..L
(S·R) Ct (0-BK I
LS
(W)
d •
~t (GI
...,
(BR)
(BL·R) L2
6~
31~
IB~(~Y~) _____ LTS~~~(BR~)----~N
atb c
9~
34~
(0-BK) L4
12~
(BK•O) LG
37 (S-BK)
L5
15~
40~
18 (G·Y) 4 (Bl)
~ KS-20419LI
43 (O-W)
~ ~:)(NOTE :~ZZER
2 (W·O) ,.,.IH
..,
27 -
(5-W)
5
~---M
30 Aw-sl ,..2H
-
8 ((G-R) It
( ) _
3H
33 "'' R·G "'
II ((BL·BK) It....,
36 L(BK•BL) 4H
....,
14 ((BR•BK) M
PU
,,
'V
,
(Y•BR)
(BRI
M
(
(S•R)
'Y'
1
(0-BK)
~---~'L-1---+~~~~--
H ,,
TO
TABLE B
(NOTE 3)
EXCLU0£0
STATION
/
f" (V·BL)
(w-BL)
j-
(BL•V)
(BL•W) +.
...:.;;.;;;....;.;."------' EXCLUSION
_(W_·_O_) ----, SWITCH
(V•O) +
(o-w)
(o-v) f
(NOTE I)
CLIP NO.
41
PART Of' 050N
MTG CORD
46 ((V-BL) 0ET
42 '
R 21 (IBL-V) Q)ER
A·H 43 47
((V-Ol 0EH
X .__ _____ B;;;....t-e>-4-4o-<" 22 ( (0-Vl 0EB
"---+-o3;;..4o--( l7 ( (0 -Y) M
·33
(BK·BR) ,.. 5H (BR·BK)
39+-------~~~._~~--~~~--------~
31
42 ( (Y-0) It
41 ( (Y-BL) M
49 ((V-BR) M
24
((BR-Vl M
16
((BL-Y) It
48 ( (V-G) It
25 ( (S-Vl It
50 ( (V-Sl *
23
((G-Vt *
45 (Y-S)
20 @S·Y)
19
(BR·Y)
44
((Y-BR)
RT (BK)
elR (5) !At
(STRAP)
0SG
(Rl
TIA
RINGER
Kt
~300
OHMS
(NOTES 2 ,4,~, AND 6)
47
SP
48
SPARE
32
45
50
49
46
Fig. 5-2563HBM Telephone Set, Connections (Sheet 1 of 2)
Page 8

TCI Library- http://www.telephonecollectors.info/
ISS 5, SECTION 502-543-400
(NOTE 9)
!:
"""
luu
lTt
~
HANDSET
(ILl
..
' I IRI
~ (
CORD
'
..
tlv
....,
)
Jl w
IS-IICI I I
HS I lSI
~7
CBKI
"'
I • 17
...., ( )
I
IS-VI
~~·
(WI ~ ( )
s
~(
I
(NOTE 9)....,
I ' )
I (Y-GI
sf (W-BRI
(It) (STRAit)
_j
H4DU
GI!5A
~ :::, ~~
(WI '
~"
I
......
(W)
I(R-G)
~Rt (W-6)
~s
(W-GI
fo
(BKI 9 1 8
(G-VI
I
~ (STRAP)
"' II
HS T
FL
IBIC-Sl
I
12
I IBKI
I
LSt IRI
l I
1 y I z
~2
IBLI
I STRAP)
IWI
lew-aLl
"'
GNt
I
IGI
I
z§ (BRI
0 •
,_1 BICI
• I
~,
...,
I
L ________ _j
(Y-GI
RRt
NOTES:
I. 66E•TYPE CONNECTING BLOCK SHOWN. MOUNTING CORD MAY BE PLUGGED DIRECTLY INTO
CONNECTOR CABLE. CORD AND PIN NUMBERS FOR CONNECTOR CABLE ARE SAME AS
MOUNTING CORD.
0
3§ IBK)
2. CONNECTIONS FOR TIA RINGER SHOWN. CONNECTIONS FOR NIA RINGER IDENTICAL EXCEPT INSULATE
AND STORE (S) AND (S-RI LEADS.
3. IF EXCLUSION FEATURE IS ADDED, CONNECT SWITCH LEADS PER TABLE B.
4. FOR BRIDGED RINGER ON ANY LINE CONNECT (R) RINGER LEAD TO K OF NETWORK AND
(BK) RINGER LEAD TO TIP OF LINE INVOLVED. CONNECT (S) STRAP FROM A or
NETWORK TO RING or LINE INVOLVED.
5. IF CAPACITOR IS NOT REQUIRED IN RINGER CIRCUIT, MOVE (R) RINGER LEAD TO A OF
T1£ NETWORK.
6. TO 51 LENCE RINGER REFER TO APPROPRIATE Rl NGER SECT I ON IN D IV I 51 ON 501.
7. SET MUST BE EQUIPPED WITH 2416 SERIES II AMPLIFIER IF EXCLUSION FEATURE IS ADDED
8. IF HOLD POSITION LAMP IS REQUIRED, USE SPARE PAIR AND TERMINATE ON LH .
AND LG TERMINALS.
9 IN SETS MANUFACTURED PRIOR TO 1980 LEADS ON TERMINALS 1 Allll 4 OF 2416
AMPLIFIER WERE REVERSED. WIRE AMPLIFIER AS SHOWN TO PREVENT TELEPHONE
CIRCUIT FROM OSCILLATING.
* - INSULATED AND STORED
t • NETWORK TERMINAL UNDESIGNATED TERMINALS ARE ON KEY TERMINAL BOARD.
§ - 2418 AMPLIFIER TERMINAL
PU- PICKUP KEY
H- HOLD KEY
LS- LINE SWITCH
HS- HEADSET ON-OFF KEY (6444)
Fl- FLASH KEY (644A)
D
8
St
/
(WI
(G)
!52-0R
!53-TYPE
HEADSET
TRMTR
v
vq
~ LQ
NETWORK
2
241 B AMPLIFIER, SERf ES II
(NOTE 71
RCVR
Fig. 5-2563HBM Telephone Set, Connections (Sheet 2 of 2)
Page 9

TCI Library- http://www.telephonecollectors.info/
SECTION 502-543-400
IAI·IA2
KTS Ll N£
CKT
IAI·IA2
KTS LAMP
CKT
BUZZER
LEADS
IA I·IA2
KTS
T
s
G
R (I )
T
(I )
R(2)
T (2)
R(3)
T(3)
R(4)
T (4)
R(5)
T (5)
.....
_,. L( I)
LG( I)
L(2)
LG(2)
L(3)
LG (3)
L (4)
LG(4)
L(5)
LG(5)
["
BZI
_,.Al-B
A·H
8
A·H
8
A·H·S·SI
8
A·H-S·S I
B
A•H·S·SI
8·81
R·RI
.....
0
IG
G-SG
RD
SY
BL
8U
L
AMP
(NOTE I )
CLIP NO.
2
~
I J
8 /
7
14
J
'
13
20
19
26
25
6
5
12
II
18
17
24
23
.L
30
29
36
35
4
~
3
10
/
9 '
16
'
15
22
21
'
28
27
'
39
40
38
37
~
26
4
29
7
32
10
3S
13
38
PART Of D50N
MTG CORD
L_
(8L·W)
:_ (W·8L)
=(BR-W)
'(w-8R)
L_(O-R)
'
(R·O)
L_ (S·R)
(R·S)
(G·BK)
(BK•G)
.....
IR
,..,.I'T
:2R
:2T
.:::.3R
::::3T
::::4R
:4T
.: SR
;:sT
-
636A KEY
PU
"
,,
.L
.L_
,,
,
,,
,,
3
~(G·W) Ll
(W·G) LG
28
(BL·R) L2
6~
31~
9
~R-R L3
(R-BR)
LG
34
(0·8K) L4
12~
(8K·O) LG
37
(S·BK) LS
IS~
40~
(G·Y) 4 IBLl
y G KS-2041tLI
18~
43 ( • ) 6 IBLl AC BUZZER
0 LH)
(O•W) 0 LG (NOTES)
2
5 (S·W)
30 I " (Y•BR)
M
3H
(BRl
8
((G·R)
M
4H
M
9 (R)
"'
-
(G)
(G·BK)
M
(S•R)
SH
(BR•BK)
33 (R·G)
II ((8L·BK)
36
(BK•8L)
14
((8R·8K)
(BK·BR)
39+--------Q~--~--~~~~---------J
45 (Y·S)
20 ~S-Y J
RT
0
RR (S) !At
(STRAP)
eJSG
01 IR)
TIA
RINGER
Kt
5300
OHMS
(NOTES 2 ,4,5, AND 6)
FL
HS
16 I!S
(BK) 4 3
(S·R) ctiO-BK)
X
I
(S·Y)
LS
(G)
(W)
3
I&Ll
d e
Ft
_17\. (G)
(BL)
/--
2
:t
HS ,It
LS
I " • leL)
[iaL) e
~t
...,
H
(Y•8L)
(w-8L)
(8L•Y)
TO
(8L·W)
....:..;;.;;......;;."-------' EXCLUSION
TABLE a
(NOTE 31
EXCLU0£0
STATION lT
R
A·H
8
f'_
SP
SPARE
(w-o)
SWITCH
----,+
(Y·O)
(o-w)
(O•Y)
(NOTE I)
CLIP NO.
41
'
42
43
44 '
34
33 '
31
'
47
48
32
45
so
49
46
'
'
+
PART Of 050N
MTG CORD
46 ( (V-BLl 0 ET
21 ((BL-V) 0ER
47 ((V-Ol 0EH
22 ( (O-V) 0E8
17 ((0-Y) It
42 ((Y-O) M
41
((Y-BL) It
49
((V-BR) *
24
( (BR-V) It
16
( (BL-Yl It
48 ( (V-G) It
25 ( (S-V) It
SO((V-Sl lt
23((G-Vl It
Fig. 6-·2563HBMS Telephone Set, Connections (Sheet 1 of 2).
Page 10

TCI Library- http://www.telephonecollectors.info/
,----------,
I PART OF 35-TYPE DIAL I
(0-BK)
(Rl(STRAPIINOTE 9)
4§
!:
,.,.
I (R)
lTt
~
(8Ll
..
I
I
....
e1v -
• • HS I
(S-BK)
I
(S)
,.,.7
_j
...,
I 8 I 9 -
I 7 (S-V)(NOTE
9) ,.,.1 I
I ...,
I
(Y-Gl
f>..51 (W-8Rl
I -
ISS 5, SECTION 502-543-400
616D
JACK
(R)
(BK)
(
(
(W)
./ (
'
~(
H4DU
HANDSET
CORD
)
)
GI5A
~ ::~) ~~~T
)
)
(W) '
~"
(W)
I (R-Gl ,.,.Rt (W-G)
,.5
(W-Gl
f2
(BK) 11 __110 IG-Vl
I -(STRAP) -
13
HS I
FL
(BK-Sl
I
14
I (8Kl
I
it
I I I
(8Ll (STRAP)
1 y I z
IIW-BL)
LS IRl
2
GNt
(W)
I
...,
I I
(Gl I I
,.IBM)
I • I
...,
I
L ________ _j
(Y-Gl
RRt
NOTES:
1 66E-T'IPE CONNECTING BLOCK SHOWN. MOUNTING CORD MAY BE PLUGGED DIRECTLY INTO
CONNECTOR CABLE. CORD AND PIN NUMBERS FOR CO~NECTOR CABLE ARE SAME AS
MOUNT! NG CORD.
...
2 CONNECTIONS FOR TIA RINGER SHOWN. CONNECTIONS FOR NIA RINGER IDENTICAL EXCEPT INSULATE
AND STORE (S) AND (S-R) LEADS.
3 IF EXCLUSION FEATURE IS ADDED, CONNECT SWITCH LEADS PER TABLE B.
4. FOR BRIDGED RINGER O'l ANY LINE CONNECT (R) RINGER LEAD TO K OF NETWORK AND
(BK) RINGER LEAD TO TIP OF LINE INVOLVED. CONNECT (S) STRAP FROM A OF
NETWORK TO RING OF LINE INVOLVED.
? IF CAPACITOR IS NOT REQUIRED IN RINGER CIRCUIT, MOVE (R) RINGER LEAD TO A OF
THE NETWORK.
6 TO SILENCE RINGER REFER TO APPROPRIATE RINGER SECTION IN DIVISION ?01.
7. SET MUST BE EQUIPPED WITH A 241B SERIES II AMPLIFIER IF EXCLUSION FEATURE IS
ADDED.
8. IF HOLD POSITION LAMP IS REQUIRED, USE SPARE PAIR AND TERMINATE ON LH
AND LG TERM I NALS.
9 IN SETS MANUFACTURED PRIOR TO JULY 1980 THE (S-V) AND (R) LEADS WERE
REVERSED ON TERMINALS 1 AND 4 OF 241B AMPLIFIER. WIRE AMPLIFIER AS
SHOWN TO PREVENT TELEPHONE CIRCUIT FROM OSCILLATING.
* -I NSULA TED AND STORED
t -NETWORK TERMINAL UNOESIGNATED TERMINALS ARE ON KEY TERMINAL BOARD.
§ - 241 B AMPLIFIER TER:-11 NAL
PU- PICKUP KEY
H- HOLD KEY
LS- LINE SWITCH
HS- HEADSET ON-OFF KEY (644A)
FL- FLASH KEY (644A)
4
z§ IBRl
0 •
3§ (BKl
0 •
B
(G)
ST
52-0R
/
(W)
53-TYPE
HEADSET
TRMTR
v
1;'11
~
LI1
RCVR
R
0L2
NETWORK
241 B AMPLIFIER, SERIES
II.
(NOTE 71
Fig. 6-·2563HBMS Telephone Set Connections (Sheet 2 of 2)f
Page 11

TCI Library- http://www.telephonecollectors.info/
SECTION 502-543-400
TABLE B
CONVERSION FOR LINE EXCLUSION KEY (NOTE)
EXCLUSION KEY LEADS
EXCLUSION
KEY TEL SYS
BL-W
W-Bl 0-W W-0
V-BL BL-V V-0
0-V
lA
n·:·
T* lBt H*
ET ER EH
EB
On any line
lAl, 1A2, 6A, or 6B
R*
T* EB
H*
ET
ER EH
EB
*Connect to terminal of line being excluded.
·r When other than Line 1 is excluded in a lA key telephone system, remove the 0-W mounting cord
condu<:tor from terminal lB, insulate and store. Connect balance lead cord conductor of line in-
volved
to terminal lB.
Note: To allow access to and operation of the exclusion switch plunger during headset operation,
handset must be lifted and left off of its cradle. Returning handset to on-hook position cancels
exclusion.
TABLE C
PICKUP-SIGNAL
KEY CONVERSI~ (NOTES)
CONVERTIBLE
KEY LEADS
KEY
OPTIONS Y-BR BR
S·R
BR-BK
HPPPPP
l\1
M M X
HPPPPS
M M M
SG
HPPPSS
l\1
M SG X
HPPSSS
M X SG X
HPPP*P*S'''
M X !)H
N'
HPP'''P*P'''S'''
X X
fiH
N'
•These pickup key options use line switch or headset switch controlled ground through the common
signal key and the S lead
of the selected line to operate a common signal relay.
tFor 1A KTS connect to terminal 1. Obtain common signal ground through (Y) line switch lead or
(G-BK) headset key connected to SG terminal.
Note 1: All convertible key positions are arranged in the factory as pickup positions. To convert a
key position from pickup (locking) to signaling (nonlocking), remove the 811218924 (P-12A892)
screw detail from plunger
at the key position to be converted. Make necessary connection
changes as shown
in Table C . To convert a key position from nonlocking to locking, insert
811218924 (P-12A892) screw detail.
Note 2: When keys are converted for signaling, the S lead of key involved provides the signal circuit
and
SG lead provides the common signal ground.
Page 12
12 Pages