NORTHERN ELECTRIC NE-500 Instruction Manual

NORTHERN ELECTRIC PRACTICES SECTION 502-5101-201
Issued: 30 November 1973
Standard
I.
2.
3.
4.
5.
TELEPHONE SETS
NE-500, NE-1500 (MD), NE-2500
NONBUTTON AND ONE-BUTTON TYPE
IDENTIFICATION, INSTALLATION, AND MAINTENANCE
CONTENTS PAGE CONTENTS (Co
nt) PAGE
GENERAL 789
C. Turnbutton /Pus hbutton
813
D. Ringer Capacitor 815
DESCRIPTION 790 6. ASSEMBLY
OF PARTS 815
GENERAL 790 A. Housing (Desk Telephones) 816
COMPONENTS 793
B. Housing (Wall Telephones) 816
C. Ringe rs
816
A. Mounting Cord 793 D. Dial 816
B. Handset 793 E. Apparatus Blank (Desk Telephones) 817
C. Rotary Dial (NE-500 Type)
793
F. Apparatus Blank (Wall Telephones) 817
D. DIGITONE* Dial (NE-2500 Type)
793 G. Cords (Handset and Mounting) 818
E. Line Switch 793 H. Line Switch Cover Assembly 818
F. Ringer 793 I. Exclusion Switch 818
G. Network 795 J. Plunger 818
K. Turn button and Terminal Strip 819
ORDERING INFORMATION 795
L. Faceplate (N E-2500 Type
Telephone) 819
FEATURES 795 M. Designation Window (NE-2 500
Type Telephon e)
819
IDENTIFICATION 795 1. GENERAL
GENERAL 795 1.01 This section co
nt ains information for th e
TELEPHONE SET IDENTIFICATION 795 identification, installati on, and maintenance
of no nbutton and one-button NE-500, NE-1 500
INSTALLATION 808 (
MD ), and NE-2500 type wall and desk telephone
sets.
MAINTENANCE 808
1. 02
The NE-1 500 and NE-1554 typ e telephone
A. Line Switch Assembly 813
se ts are manufac tur e discontinued (M D) and
B. Exclusion
or Monitor Switch 813 are superseded by th e NE-2500 and NE-2554 type
•A tudemuk of Northern Electric.
©Northern Elec tr ic Compa ny Limited, 1973
PRINTED IN CANADA
789

SECTION 502-5101-201
telephone sets. The components of the NE-1500
(MD) type telephone sets are compatible with the
NE-2500 type telephone sets except for the dial
and housing.
1.03 An NE-426A electron tube (Fig. 3) or a
P0895087 ringer isolator kit (Fig. 4) may be
installed within the telephone set to correct
inductive noise conditions. Refer
to the section on
the P0895087 ringer isolator kit for connection
information.
2. DESCRJYI'ION
GENERAL
2.01 The NE-500 and NE-554 type telephone
sets are equipped with a rotary dial. The
dial may be replaced
in the field, with an NE-95B
apparatus blank,
if the telephone set iS. converted
for manual operation. (Fig. 5 and 6.)
Fig. 1 - NE-25000 Telephone Set
790

SECTION 502-5101-201
+EXCLUSION SWITCH
NE-584 TYPE
C:.WJ+-- 2 LINE & SIGNAL
SW ITCH
Fig. 2 - NE-2558DR Telephone Set
791

SECTION 502-5101 -201
792
•
-
Fig. 3 - N&500 Type Telephone Set Showing Method of
Mounting NE-426A Electron Tube
Fig. 4 - NE-500 Type Telephone
Set Showing Method of
Mounting P089S087 Ringer Isolator

2.02 The NE-1500 (MD) and NE-1554 (MD)
type telephone sets are identical to the
NE-500 and NE-554 type except they are equipped
with a IO-button NE-25 type DIGITONE dial.
2.03
The NE-2500 and NE-2554 type telephone
sets are similar
to the NE-500 and NE-554
except they are equipped with
an NE-35 type
DIGITONE
dial
COMPONENTS
2.04 All components (except the line switch
plungers on the desk type telephone sets)
are mounted on the base
of the set. Th e line switch
plungers are part
of the housing assembly.
A. Mounting Cord
2.05 NE-500, NE-1500 and NE-2500 desk type
telephone sets are provided with a
5- 1/2
foot mounting cord, which may be replaced with a
9- or 13-foot NE-D type 3-conductor cord, or a
13-foot
NE-D type 4-, 6- , 10- or 16- conductor
cord.
The mounting cord is connected to the
service leads through the appropriate connecting
block.
B. Handset
2.06 All sets are shipped with an
NE-G 3AR
handset. The handset may be replaced with
a handset containing an amplifier, such as the
NE-G6AQ
IA for customers with impaired hearing,
or an NE-G7AQ1A for customers with impaired
speech. An NE-GSAQIA handset may
be used in
noisy locations.
C. Rotary Dial (NE-5, 00 Type Sets)
2.07 Most NE-500 type telephone sets are.
equipped with QDB I type dial
s. Th e NE-7
(MD) type dial is superseded
by th e QDB I type
dial.
The rotary dial is available with or without
the word "OPERATOR" printed on the number
plate and must be specified when ordering.
SECTION 502-5101-201
D. µIGITONE Dial (NE-2500 Type Sets)
2.08 NE-2500 type DIGITONE sets are equipped
with NE-35Q3A1 12-button dia
ls . The
NE-25 type 10-button dial and NE-35 type
12-button dial are
MD and are superseded by the
NE-35Q type dial. The wiring connections for the
NE-35Q type dial diff
er from the NE-25 type and
NE-35 type dials and circuit modifications must
be
perfotmed as detailed in the appropriate section.
Th e two additional buttons on the NE-35Q type
dial are designated * and
t:l. While operational,
their use is restricted
to end-to-end signaling. The
DIGITONE dial is available with or without the
word "OPERATOR" printed on the "O" button,
and must be ordered accordingly.
2.09 The NE-35Q type dial assembly contains a
line-powered oscillator, which generates two
frequencies when a
button is depressed. These
frequencies are transmitted
to the CO , which must
be equipped with a converter. The converter
accepts
th e oscillator signals and translates them
into a 2-out-
of -5 code for crossbar offices, or dial
pulses for step-by-step offices.
E. Line Switch
2. 10 The card-operated line switch uses
bifurcated contact springs
to improve
reliability.
The se are protected by a plastic cover.
Th e lin e switch is held in th e off-hook position by
a coil spring.
The weight of the NE-G3AR handset
is suffici
ent to overcome the force of the coil
spring ,- allowing the card to return the line switch
contacts to the on-hook position.
F. Ringer
2.11 Most telephone sets are equipped with
NE-C4A ringers.
Th e ringer volume may be
adjusted for four
lev els using th e four
corresponding positions
of the volume control,
(Fig. 7 and 8). A fifth position is supplied for
manual ringer cutoff. an installation option.
793

SECTION 502-5101-201
794
Fig. 5 NE-500 Type Telephone Set Housing Equipped With an
NE-958 Apparatus Blank
LATCH ASSEMBLY
NE-95 B
APPARATUS BLANK
6-32 x 0.50
MACHINE SCREW
6-20 x 0. 312
BTP TYPE SELF
TAPPING SCREW
Fig. 6 - NE-554 Type Telephone Set Housing Equipped With an
NE-95B Apparatus Blank

G. Network
2.12 NE-500, NE-554, NE-2500, and NE-2554
type telephone sets are equipped with an
NE-425QE1 network, which contains the necessary
apparatus for automatic line equalization.
In most
telephone sets a
ll connections to the set are made
on the network terminals.
The NE-425QEl
network provides five extra bridging terminals with
no electrical connection
to the network circuits.
The NE-425B (MD) or NE-425E (MD) networks
are superseded by the NE-425QE1 network.
Fig. 7 -NE-500 Type Telephone Set Base
Showing Date Stamp and Ringer
Vo lume Control
ORDERING INFORMATION
2.13 When ordering the sets the desired color
must be specified, using the suffixes given
in
Table A (e.g., to NE-500CR- add 03 to indicate
black).
FEATURES
2.14 The features of each telephone se t are
shown
in Tables B, C, and D.
SECTION 502-5101-201
TABLE A
TELEPHONE SET COLOR CODES
COLOR OOLOR SUFFIX
Black -03
Ivory -50
Green -51
Red -53
Yellow -56
White -58
Pink -59
Light Beige -60
Light Gray -61
Blue -62
Turquoise -64
3. IDENTIFICATION
GENERAL
3.01 The code number and assembly date are
stamped on the base
of each telephone set
(see Fig. 7). Double code numbers (e.g., NE-500
C/D or CR/DR) permit field conversion from
rotary dial to manual operation or vice versa,
without changing the code number stamped
on the
base
of the set. Th e letter R indicates that the
telephone set is equipped with a spring type
retractile handset cord.
The R - marking has been
discontinued
on telephone sets of recent
manufacture.
TELEPHONE SET IDENTIFICATION
3.02 NE-500DR. The NE-500DR telephone set is
the basic rotary dial single-line desk set.
The
set components include an NE-G3AR handset, a
QDB 1 type dial, and NE-425QE1 network, a
3-conductor mounting cord and an NE-C4 type
ringer with adjustable volume control. The
NE-500DR telephone set is shown in Fig. 9.
796

SECTION 502-5101-201
LINE
SWITCH
COVER
EARS
NE-425QE1
NETWORK
NE - G3AR
HANDSET
,._- RINGER
VOLUME
CONTROL
Fig. 8 - NE-554BR Telephone Set With Housing Removed
796

SECTION 502-5101-201
Fig. 9 - NE-SOODR Telephone Set
3.03 NE-500CR. The NE-SOOCR telephone set is
'
identical to the NE-SOODR telephone set,
except the
rotary dial is r ep laced with an NE-95B
apparatus blank and the
se t is wired for use with
manual telephone systems.
3.04 NE-500DQJ A. The NE-SOODQlA
telephone set is identical to the NE-SOODR
telephone set, except it is equipped with a QDB 1C
all-number dial.
3.05 NE-500DQJB. The NE-SOODQIB telephone
set is identical
to the NE-SOODQ IA
telephone set, except it has a grounding button.
3.06 NE-500QD. The NE-SOOQD telephone set is
identical
to the NE-SOODR t~lephone set,
except it is equipped with an NE-C4Q3A ringer
which has no external volume control.
3.07 NE -500FR. The NE-SOOFR telephone set is
identical
to the NE- SOODR telephone set,
except it is equipped with a modified line switch
and is wired
to avoid inter ference with the dialing
or talking of another subscriber on a multiparty
line. When the handset
is lifted off-hook, a low-loss
receiver circuit
is bridged across the line due to
partial operation
of the line switch. If the line is
not busy, or if an incoming call is to be answered,
the left plunger (Fig. 10)
is pulled up fully to
complete the operation of the line switch,
completing the talking and dialing circuit.
Replacing the handset restores
both the line switch
and monitor switch
to the unoperated position.
Fig. 10 -NE-SOOFR Telephone Set Housing
797

restore the excluued service to normal, the plunger
is restored
to its normal position or the handset is
placed on-hook. The NE-D6AA mounting cord
contains sufficient leads to permit connection to
either NE-lAl or NE-1A2 KTS or the exclusion
circuit.
The NE-5028R-6l telephone set is supplied
with an NE-D6AA-6l cord and can be modified for
use with data
se ts.
3.22 NE-502AR. The NE-502AR telephone set is
identical
to the NE-5028N telephone set,
except the dial
is replaced with an NE-958
apparatus blank and the set is wired for
use with
manual telephone systems.
3.23 NE-502QA. The NE-502QA telephone set
(Fig. 11) is identical to the NE-5028R
telephone set, except
it is equipped with an
MD2993 pushbutton which, when depressed, may
be used for signaling.
3.24
NE-5/0BR. The NE-5108R telephone set is
identical to the NE-500DR telephone set,
except it has two separate lines which are selected
by a turnbutton-pushbutton. Depressing the
SECTION 502-5101-201
button provides momentary connection between
two contacts for signaling.
To permit incoming-call
audible signaling on both lines, an external ringer
may be connected
to the second line. The
turnbutton can also serve as a transfer or cutoff
key on lines, line extensions, ringers, etc. The
features extend
to the connecting block through
the NE-D6AA mounting cord, which is connected
to the terminal strip within the telephone set.
3.25 NE-5/
0AR. The NE-510AR telephone set is
identical to the NE-5108R telephone set,
except the dial is replaced by an NE-958 apparatus
blank and the set
is wired for use with manual
telephone systems.
3.26
NE -51 OFR. The NE-51 OFR telephone set is
identical to the NE-5108R telephone set,
except the NE-51
OFR is equipped with a
lift-to-talk- and-dial plunger as described for the
NE-500FR telephone set. (See 3.07.)
3.
27 NE-51 OER. The NE- 51 OER telephone set is
identical to the NE-5 IOFR telephone set,
except the rotary dial
is replaced with an NE- 958
Fig. 11 -NE-502QA Telephone Set
799

SECTION 502-5101-201
apparatus blank and the set is wired for use with
manual telephone systems.
3.28 NE-5/0QA.
Th e NE-5 lOQA telephone set is
identi ca l to the NE-51OFR telephone set,
except
it is provided with an MD 2993 pushbutton
which provid es th e features described for the
NE-502QA telephone set. (See 3.23.)
3.29 NE-51J
DR . The NE-511DR telephone set is
identical
to th e NE-51 OBR telephone set
(see 3.24), except
it is equipped with an
exclusion-switch assembly which is activated
by
lifting the left line switch plunger. The NE-Dl 6QA
mounting cord extends the control leads from the
terminal strip and network
to facilitate connection
to the QUS1 type hands-free unit, the NE-3 type
speakerphone,
NE-lAl KTS, NE-1A2 KTS and
exclusion circuit
s. The NE-51 lDR telephone set
may also be used with data sets.
3.30 NE -51JCR. Th e NE-51 lCR telephone set is
identical to th e NE-51 lDR telephone set,
except the rotary dial is replaced with an NE-95B
apparatus blank and the set
is wired for use with
manual telephone systems.
3.31 NE-5JJDQA.
The NE-Sl lDQA telephone
set is identical
to the NE -5 1 lDR telephone
set except
it uses a QDB ID all-number dial.
3.32 NE-2500D. The NE-2500D telephone set is
identical
to the NE-SOODR te lephone set,
except
it has a DIGITONE dial. All components,
except the housing, faceplate, dial, and dial
bracket, are interchangeable between the
NE-SOOD
and NE-25000 telephone sets. The NE-25000 is
shown in Fig. 1.
3.33
NE-2500MQA. The NE-2500MQA
telephone set is identical to the NE-25000
telephone set, except for the NE-D4BJ
4-conduc
tor cord which permits connection to
either an NE-lA l or NE-1A2 KTS. The
NE-2500MQA telephone set may be modified on
the terminal strip within the set
to obtain audible
signaling
on a separate pair of leads.
800
3.34 NE-2500SQA. The NE-2500SQA telephone
set
is id e nti cal to the NE-2500D telephone
set,
except for additonal line swi tch contacts a nd a
l0-conductor NE-D l
OH cord necessary for
con
ne ction to the QUS l type hands-free unit, the
NE-3
type speakerphone or NE-lAl , and NE-1A2
KTS.
3.35 NE-2500 YQA . The NE-2500YQA
telephone set is identical to the NE-2500D
telephone set, except for the message-waiting lamp
on the face
of the set. Th e features and their
operation are identical to those de
sc ribed for the
NE-SOOYR telephone set for rotary dial systems.
(See 3.14.)
3.36
NE -25 /JDQA . Th e NE-251JDQA
telephone set
is similar in appearance to the
NE-2500D telephone ·set. The NE-251 lDQA
telephone set is
equ ipped with an NE-584AQA key
(turnbutton-pus
hbutton) and an exclusion swi tch
to provide th e features as described for the
NE-511DR telephone set. (See 3.29.)
3.37 NE-554BR. The NE-554BR telephone set
is
a single-line wall telephone set. (Fig. 12.)
Th e set components include an NE-63AR handset,
a QDB l type dial, an NE-425QE1 network, and an
NE-C4 type ringer with adjustable volume control.
3.38 NE-554AR.
Th e NE-554AR telephone set is
identi ca l to the NE-554BR telephone set,
except the dial is rep
la ced with an NE-95B
apparatus blank, (Fig. 6), and the set
is wired for
manual service.
3.39
NE -593BRW. The NE-593BRW telephone
set is identical
to the NE-554BR te le phone
set, except it is
not equipped with a ringer.
3.40 NE-503ARW. The NE-593A RW telephone
set is identical
to the NE-554BR telephone
set,
except it is not equipped with eith er a ringer or
a dial. The dial is replaced by an NE-95B apparatus
blank and the set
is wired for manual service.

SECTION 502-5101-201
Fig. 12 -NE-554 Type Wall Telephone Set
801

SECTION 502-Stol-201
3.41 NE-554QD. The NE-554QD telephone set
is
identical to the NE-554BR telephone set,
except it is not equipped with an external ringer
volume control.
3.42 NE-554FRN. The NE-554FRN telephone
set is ipentical to the NE-554BR telephone
set, except
it is equipped with a modified line
switch and is wired
to avoid interference with the
dialing
or talking of another subscriber on a party
line. When the handset is lifted, a low-loss receiver
circuit is bridged across the line due . to partial
operation
of the line switch. If the line is not busy,
or if an incoming call is to be answered, pushing in
the monitor switch (located on the right side
of the
set), fully operates the line switch, completing the
talking and dialing circuit. Replacing the handset
restores both the line switch and monitor switch.
3.43 NE-556FRN (MD). The NE-556FRN (MD)
telephone set
is identical to the
NE-554FRN telephone set, except it has an
NE-426A electron tube, and is intended·for 4-party
selective and 8-party semiselective· (polarized
ringing line) service.
3.44 NE-554BQA. The 'NE-554BQA telephone
set is identical
to the NE-5~4BR telephone
set, except
it has a QDB 1C· ~ll-number dial, and a
P096C252 signal switch located below and to the
right
of the dial. The signal · switch: leads cire ·
connected to a P338886 terminal strip located on
the dial bracket.
3.45 NE-55JBQJA. The NE-554BQ1A telephone
set is identical
to the NE-554BR telephone
set, except it has a
QDB 1C all-number dial.
3.46 NE-55JQ4A. The. NE-554Q4A telephone
set is identical
to the NE-554BR telephone
set, except it has a ground switch located below
and
to the right of the dial. The ground·switch is
wired between tip and ground. Depressing the
switch button connects one side
of the line to
ground.
3.47 NE-558DR. The NE-558DR telephone
~tis
the standard 2-line set. It is equipped with
standard components, except the dial is a
QDB lB
dial with an additional set
of contacts, which mute
802
the dial pulses for use in speakerphone systems. In
addition, the NE-558DR telephone set is equipped
with an exclusion switch and an NE-584B
tumbutton-pushbutton. Holes are provided in the
baseplate for mounting an NE-659A transmitter
for use in home communication systems. The
exclusion · switch and turnbutton-pushbutton
· provide th~ following services:
(a) The exclusion switch provides a means
of
disconnecting an extension station by raising
the plunger pr-0jecting through the top
of the
housing.
The ·switch returns to normal when the
handset is
r~placed . ·
(b) In ·home communications systems, the
exclusion switch may be used to place the
CO line on hold while using the intercom.
(c) The tumbutton-pushbutton provides a
means
of transferring the talking circuit to
·either of two lines. This switch can also be used
to cut off or transfer lines, extension stations,
ringers, etc. Depressing the button momentarily
closes a pair
of contacts to provide signaling.
3.48 NE-558CR. The
NE-5 58CR telephone set is
identical
to the NE-558DR telephone set,
except the dial is replaced with an NE-95B
apparatus blank, and the set is wired for manual
service.
3.49 NE-558DQA. The NE-558DQA telephone
set
is identical to the NE-558DR telephone
set, except
it has a QDB 'lD all-number dial.
3.50 NE-2554BQIA -. The NE-2554BQ1A
telephone set is the standard single-line
DIGITONE wall set.
It is identical to the
NE-554BR telephone set, except it is equipped
with an NE-35Q3A
(MD) or NE -35Q3Al
DIGITONE dial. Left and right dial-mounting
adapters are required to mount the dial.
3.
51 NE-2558DR. The NE-2558DR telephone
set is the standard 2-line DIGITONE wall ·
set, (Fig. 2). It is identical to the NE-558DR
telephone set except it is equipped with an
NE-35Q3G (MD)
or NE-35Q3Al DIGITONE dial,
and a P096C204 2-line switch, which allows the A
lead
to be switched when changing lines.

MA N UAL
NE-501C R- •
NE-501 F.R-•
NE-SO~AR - •
NF. - SO~A R -•
NF.-5 1 0AR- •
NF. -SIOAR-•
NE -5I OAR-•
NF.-5 I OAR-•
E-510AR-•
NF.-510ER-•
NF.-510F. R-*
NF.-5 IOF.R-•
NE-510ER-*
NE- 51 ICR -*
NF.-51 ICR-•
NE-51 ICR-*
NF.-51 ICR-•
NE - 51 ICR-•
NE-51 IC R-•
TABLEB
ONE-BUTTON DESK TELEPHONE SET FEATURES
(Double-Line or Additional Equipment)
TELEPHONE SET
DI AL ELEC .
ALL
TUBE
ROTARY DIGITONE
NUMBER 4-PARTY KEY SPEAKER- LIFT-TO-
C ALLI NG SEL. RIN G
SYSTEMS PHONE TALK
NF. - 501 DR-• v
NF.-501 FR -• v v
NF.-SO~BR -•
v
NF.-50~BR- •
v
NF.-50~0A- *
NF.-5 IOBR- •
NF.-510BR-•
NF.-5 IOBR-•
NF. -510BR-• .
NE-5 IOBR -•
NF.-510FR-*
NF.-5 IOFR -•
1
F.-5 IOFR-•
NF.-5 IOFR- •
NF.-5 IOQA-*
NF.-5 11 DR-•
l\F.-~511 DOA·*
v v
NF.-5 11 DR-*
NF.-~511 DOA ·* v v
NE-51 1 DR -*
NF -~ 511 DOA -•
v v
NF.-511 DR·* NF. - ~511 DQA- * v v
J'ff-5 11 DR-* NE -~ 51 IDOA-*
v v
NF.-5 11 DR-*
NE-~511 DOA- * v v
N E-511 OQA-*
v v v
• Wlwn onkrini: th~ tt· k' pho11~ s~t th ,· <ksir,·d rn lor must ht' speci fied using th~ suffixes in T ahle A.
SECTION 502-5101-201
NUMBER
OF LINES
SIGNALING
PICKED UP
CIRCUIT
I
I
I
I
I
2
I v
I v
I
I
2 v
2
I v
I v
I
2 v
2 v
2 v
I v
I v
I v
I v
(Cont'd Next P1ge)
803

SECTION 502-S101-201
LINE
RINCER
...;
...;
...;
.j
..;
.j
.j
.j
.j
..;
.j
.j
...;
,1
804
TABLES
ONE-BUITON DESK TELEPHONE SET FEATURES
(Double-Line or Additional Equipment)
CUTOFF BY KEY
RINGER OR
C OM~IONOR BUZZER RINGER
OR EXTENS I ON
PRIVATE LINE EXCLUSION CUTOFF BUZZER
STATION AUXILIARY
RINGER OR BUZZ ER
BY EXCL . IN SET OR RI NGE R
RE CE IVER
...;
v
...;
..;
,1
..;
...; ...;
../
.j
...;
.j .j
.j
..;
...;
..; .j
..;
.j
...;
.j
..;
...;
QBBIA
CONN.
GROUND
BLK . BUlTON
...;
...;
..;

(I)
0
01
TE LE Pll ON E SE l coot
ROTARY
OI GIT ON E
MANUAL
NE -S OODR -• l\E -2S OOD -' l\ l -S OOCR ·"
NE- S OODQ IA·'
NE-500 DQ IB·•
NE -S OO F R-• N1 ;. soor R-•
NE-S OOFR N· "
N E- S OO MR ·' Nl! - ~ S OO M OA · ' Nli·S OOL K·'
N
E- S OOQ[). •
Nf. - SOO SR -• NF - 2S OOSOA ·'
NF - IOO RR _.
NE-SOO YR ··
NF - ~ soo vo , v
N l:·S OO WR ·'
NE·S
OOYQ IA·'
NE- S OO Y QB· '
N
f. -S OOPRN ·'
Nii ·S OON RN -•
TABLE C
NONBUTION DE SK TEL EPHO NE SET FE ATUR ES
(Single- lin e)
OIA I
LIFT -TO- TA LK
\!AR KI NG
l\ U 'll.\ · F-'IGLISll ~ FY SPf :A KER·
NU\IER
IC NU \tERIC F. NG LISll ANO SYSTI:: \I PllO'l l'
FR ENt1 1
"
"
" , 1 "
" ,1
" "
" ,I " v
"
"
" ,1
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TELEPHO NE SET
DIAL
MAN UA L
ROTARY
DIGITONE
NE-SS4AR· • NE -SS 48R·• NE·2SS4BQIA·•
NE-S93A RW -• NE-S 93 BRW-•
NE -SS 4 FRN ·•
NE-SS 4B QA ·•
NE-SS4 BQ IA ·•
NE-SS4Q4A·•
NE · SS8CR- •
NE-SS8DR-• NE-:?SS8DR ·•
NE-SS80QA· •
NE-SS6FRN .•
NE -I SS48- •
NE -SS 4QO -•
TABLED
NONBUTTON AND ONE-BUTTON WALL
TELEPHONE SET FEATURES
ELECTRON
ALL TU BE NUMBER
NUMBER
..,,ARTY
LIFT - TO · TALK OF LI NES
DIAL
SEL .RlNC PI C KED UP
I
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..;
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..; ~
..;
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When o rdcrin &t he telepho ne set the desired color must be s pecified using the suffixes in T :1 bk: A.
t No R inge r volume co ntrol.
SIGNA LI NG LINE
C IR CU IT RINGER
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SECTION S02-S101-201
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Fig. 13 -Present Production Baseplate (Wall Telephone)
t
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-CENTRE LINE
OF' BASE P LATE
r:1 ,
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- ....:...L - -- -y-
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• 35/ 161N---j
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Fig. 14 -Early Production Baseplate (Wall Telephone)
Showing Drilling Location for Mounting Holes
807

SECTION 502-51< ~ 1- 20 1
4. INSTALLATION
4.
01 The telephone sets shall be installed
according
to the appropriate sections.
Connection information for each type
of telephone
set is located
in the section entitled, TE LEPHONE
SETS
-TYPE CONNECTIONS.
4.02 Several
ho les are provided in th e baseplate
of the wall telephone set to allow greater
flexibility in mounting and
to minimize the use of
a backboard (Fig. 13 ). Baseplates of current
manufacture may be mounted on a conduit
outlet
box. Baseplates of ear ly production models require
modification.
4.03 To modify early production baseplates, qrill
two holes as shown in Fig. 14 using a No.
17
(0 .173 inch) drill bit. If a conduit outlet box is
not available, mount the telephone set with screw
anchors, using the mounting holes at the top and
bottom of the baseplate.
4.04 Refer to th e appropriate section for
information on screw anchors suitable for
mounting wall telephone
se t s.
4.05 When connecting a te le phone set to an
NE-IA, NE-IA1, NE-IA2,
or NE-6A KTS, a
QUSl-type hands-free unit or an NE-3 type
speakerphone, refer
to th e connection section on
the particular telephone set being in stalled.
808
5. MAINTENANCE
5.01 Maintenance of the telephone sets consists
of cleaning exterior surfaces, burnishing and
adjusting switch contacts, and. replacing defective
components.
5 .02 Housing, handset and dial pushbuttons can
be cleaned
wi th a soft cloth moistened with
water.
Do 1101 use scourl11g powders or c/ea11ers.
Replace plastic components if cleaning does not
have satisfactory results.
5.03 Check line and ground terminations, and
wire dressing before proceeding with
maintenance.
5.04 CO station ringer and dial test circuits
should be used where possible when
checking telephone sets.
5.05 Network and line switch assemblies are
riveted
to the baseplate. Th ese assemb lie s
are
not normally replaced in the field, however,
they can be replaced by drilling
out the rivet and·
using a No. 4 by 0. 250 (P097D700) self- tapping
screw.
5. 06 Chart 1 li sts common troubles and their
probable causes, with suggested corrective
actions.