Teletype 43 Teleprinter Basic RO User manual

e
the ~3 teleprinter
Installation
&
TEL E T V P ET.M. Routine Servicing
f H ~ FOR BASIC RO TERMINALS
Manual 391, Part 9
Also available as
...
Manual 373
Issue 2, March 1978

© 1977 and 1978 by Teletype Corporation
All rights reserved
Printed in U.S.A.

THE 43 TELEPRINTER
BASIC RO
INSTALLATION AND ROUTINE SERVICING MANUAL
INDEX
PART 1
INTRODUCT ION
PART 2
INSTALLATION
A. VARIABLE FEATURES . . . •
B. INTERFACES ..
C. ASSEMBLY .....
1. UNPACKING . . . .
2. TELEPHONE AND LINE CONNECTION.
3. ACCESSORIES
4. STATION TESTING
MANUAL 373
Issue 2, March 1978
PAGE
1-1
2-1
2-3
2-5
2-5
2-5
2-8
2-8
PART 3 -- ROUTINE SERVICING
A. TROUBLE ISOLATIO~ k~D CORRECTION .
B.
PERIODIC CHECKS, LUBRICATION AND
CLEANING . . . .. ..• . .
1. GENERAL . . . • . . . . .
2. VISUAL CHECKS .•••..
3. CLEk~ING &~D APPEARANCE ....... .
4. LUBRICATION PROCEDURES . . . . . .
5. LUBRICATION POINTS . . . . . ...
C. COMPONENT ACCESS .......... .
1. OPERATOR CONSOLE, CABLES, DIRECTORY
CARD k~D VARIABLE FEATURE SWITCHES .
2. POWER SUPPLY LAMP, CABLES
AND FUSES ..... .
D. ADJUSTMENTS . . . . . .
1. RIGHT PAPER SPROCKET
2.
3.
PLATEN ENDPLAY AND PRINTED LINE
POSITION ....
LEFT-HAND MARGIN . . . . .
3-1
3-3
3-3
3-3
3-3
3-3
3-5
3-7
3-7
3-7
3-8
3-8
3-8
3-9

THE 43 TELEPRINTER
BASIC RO
MANUAL 373, 1-1
INSTALLATION AND ROUTINE SERVICING MANUAL
PART 1 -- INTRODUCTION
This manual provides information on the installation and routine serv1c1ng of the
43 Teleprinter Basic RO terminals. Instructions are provided for service person-
nel, with a minimum of training, tools and spare parts, to enable variable fea-
tures, connect the proper interface, correct: minor troubles and periodically
inspect, lubricate and clean the terminal during extended service intervals.
These 43 Teleprinter Basic RO terminals (sets) are receive-only printers that
accept serial asynchronous data using l2-inch wide sprocket feed paper or 8-1/2
inch wide friction feed paper. Serial data input signaling speeds are installer
optioned at 10 or 30 characters per second on terminals equipped with an internal
modem or with one of two types of digital communications interfaces.
Terminals with an internal modem for data transmission, interface electrically
with the telephone switched-network and with a modular jack telephone (optional)
for originating calls and talking. Terminals with digital interfaces* are fur-
nished to operate on EIA voltage levels, or on TTL voltage levels, and exchange
data and control signals with external modems or other devices for communication
over switched or private lines.
Information on how to check proper operation, change the ribbon cartridge and
install paper is included in the How To Operate Manual 372 furnished with each
terminal.
Note~ When ordering replaceable components, prefix each part number with the
letters "TP" (ie, TP129534), unless' spec.ified otherwise.
Tools and spare parts that may be required are as follows:
DESCRIPTION
3/16" and 1/4" Open-End Wrench
1/4", 6" Blade, Screwdriver
1/16" Allen Wrench
1.0 A SLO-BLO Fuse
1.0 A Fuse
Lubricants
TELETiPE CORP. PART NO.
129534
100982
124682
143306
120139
See Page 3-4
In the event that troubles occur that cannot be corrected with the information in
this manual, refer to the applicable 43 Teleprinter Manuals: Repair Manual 391,
Service Manual 369 and Circuit Diagram Manual 385, (can be purchased from Teletype
Corporation), replace the terminal, or contact the nearest Teletype Product Serv-
ice Center.
*Digital Interfaces: (Teletype Corporation Reference for 43 Teleprinter Basic RO
Terminals)
EIA -- Electronics Industries Association (Spec RS-232C) +25 V dc to -25 V dc
(On-Off Range)
TTL -- Transistor Logic 0 V dc to +5 V dc (On-Off Range)

373, 1-2
PART 1 -- INTRODUCTION (Cant)
The three types of interfaces and six basic RO sets can be identified as shown
below:
TDU CONNECTORS
LOWER - TO LINE
UPPER - TO TELEPHONE
(If Present)
SET CODE 431 OAAB (Sprocket Feed)
SET CODE 431 OAAF (Friction Feed)
RO (Sprocket Feed)
CODE PLATE LOCATION
,- ~~~~4: 'DATA T(",_ J
~ ~: .. ( 00 '~~J A
-_... ·,.ac »r.ootl
[.::::-::7..:..- L.! L_ 1
CD
SET CODE 4310AAA (Sprocket Feed)
SET CODE 4310AAE (Friction Feed)
(Internal Interface Connector)
TAU CONNECTOR
TO EXTERNAL
DATA SET
SET CODE 4310AAC (Sprocket Feed)
SET CODE 4310AAD (Friction Feed)
RO (Friction Feed)

MANUAL 373, 2-1
PART 2 -- INSTALLATION
A. VARIABLE FEATURES
The chart below provides information on how to set the feature shown under feature
numbers 431 through 437. Record any nonstandard options enabled in the space pro-
vided on the directory card (bottom side).
Feature No
Feature Suffix
i .
and Conditions
Feature Definition S 't h N b
/
WI C / urn ers
Location of Switch on
Circuit Card (See Page 3-7)
X~X / I
~
b.
431. Type Font Arrangement
a. Narrow numeric 0
and wide alpha O.
Standard 1\ and underline _ .
b. Slash numeric S
and wide alpha O.
" prints as , and _ prints as +-.
c. Slash alpha ~ and wide numenc O.
1\ prints as , and - prints as ~ .
432. Line Length
a.
132 Characters (Sprocket Feed Only)
b. 72 Characters -Printed line not centered.
c.
80 Characters
d.
72 Characters -Printed line centered
(Friction Feed Only) §
433. EOT Response
a. Disconnect
or turn off Term Ready
on received EOT.
b. Does
not disconnect or tum off
Term Ready on received EOT.
434. Character Parity Bit Sent t
a. Even Parity
b. 8th Bit Mark
435. End-of-Line on Receive
a. Auto CR-LF performed
b. Bell & Print Inhibit at last char. position
• Indicates toggle or slide position to ON.
o Indica~s toggle or slide position to OFF.
-Position of switch does not affect feature.
• Factory furnished state of feature.
t Not applicable.
j
L SP: D4
1 2 3 4 5 6 7 8
----0 • - -
----0 • --
SPD4
1 2 3 4 5 6 7 8
------• •
----- - • 0
------0 0
SPD4
1 2 3 4 5 6 7 8
-- - -• • --
----0 • --
--- - • 0 --
----0 • --
SPD4
1 2 3 4 5 6 7 8
---0 ----
-- - • - - --
SPD4
1 2 3 4 5 6 7 8
--0 ---- -
--• --- - -
SP: D4
1 2 3 4 5 6 7 8
0 ---- - --
• ---- - --
:I: On friction feed terminals, 432c (80 Characters)
is factory furnished.
432a (132 Characters) should not be selected.
§ LEFT -HAND MARGIN adjustment must be
performed (see Page 3-9).
•
•
•
•
•
•

373, 2-2
PART 2 -- INSTALLATION (Cant)
~. VARIABLE FEATURES (Cant)
436.
Speed Control
a.
30 Characters/Sec.
b.
10 Characters/Sec.
437. Print Substitute character _ on odd
Pari ty Received.
a.
Print - on odd parity received.
b. Ignore parity.
• Indicates toggle or slide position to ON.
o Indicates toggle or slide position to OFF.
-Position of switch does not affect feature.
* Factory furnished stat£' of feature.
1 2
-0
-•
1 2
0 -
• -
SPB5
3 4
--*
--
SPB5
3 4
--
--

PART 2 INSTALLATION (Cont)
B. INTERFACES
The 43l0AAB and AAF sets equipped with
430750 Terminal Data Unit (TOU) provide
two modular telephone jacks for connection
to the telephone equipment using modular
cords. These jacks are labeled line
(bottom) and phone (top) and the pin
assignments are as shown:
MANUAL 373, 2-3
TIP®
RING e
The 43l0AAC and AAD sets equipped with a 430751 Terminal Auxiliary Unit (TAU) pro-
vide a 25-pin male connector for connection to an external communications device
(modem) or distant terminal. The interface meets the requirements of EIA -RS-232C.
(See Page 2-6 for cables available from Teletype Corporation.) The pin assignments
are given below:
EIA
DATA
SET
INTERFACE
SIGNALS
Connector
EIA
Circuit
Pin
Signal
Designation
Status
1
Protective
Ground
AA
Not Wired
in
TAU
or Recommended
Cable
2
Transmit
Data
BA
Always Mark
3 Rece
ive Data
BB
Active
4 Request to
Send
RS
Always
Off
(Issue IB Logic, Card)
Always
On (Issue 2A Logic Card)
5
Clear
to Send
CB
Active
6
Data
Set
Ready
CC
Active
7 Signal
Ground
AB
Ac t i ve
8
Received
Line Signal
CF
Active
Detector
9 Not Wired
in
TAU
or Recommended Cable
10
Not
Wired
in
TAU
or
Rec ommended Cable
11
TWX Control
Not
Applicable
12
Data
Speed
Indicator
SCF
Not
Applicable
13 Not Wired
in TAU
or
Recommended Cable
14 Not
Wired
in TAU
or
Recommended Cable
15 Not
Wired
in TAU
16 Not
Wired
in
TAU
or Recommended
Cable
17 Not Wired
in
TAU
18
TWX
Indicator
Not
Applicable, Not
Wired
i.n
Recommended Cable
19 Not Wired
in
TAU
or
Recommended Cable
20
Data
Terminal Ready CD
Ac t ive
21 Not
Wired
in
TAU or Recommended Cable
22 Not
Wired in
TAU
or
Recorrmended Cable
23
Data
Speed Select
CH
Always Off
24 Not wired
in
TAU
or
Recommended
Cable
25
Analog Loop Test
Always
Off

373, 2-4
PART 2 -- INSTALLATION (Cant)
B. INTERFACES (Cant)
The 43l0AAA and AAE sets are furnished without the interface signaling unit. Con-
nection to the external conununications device (provided by the customer) 'is made
through a 20-pin connector, Berg 65346-003 or 3M 3421-300 or equivalent at the end
of a short ribbon cable. No provision is made for adding additional cable length.
Electrical Characteristics of Interface Leads are:
Electrical signals compatible with low-power TTL logic are utilized for both con-
trol and data interchange as described below:
STATE
DRIVER
TERMINATOR
MARK
+2.4
< VMARK < +5.25
Volts
+2.0 < VMARK ~ +5.25
Volts
(OFF)
(1)
SPACE o < VSPACE < +0.4
Volts
0
<-
VSPACE
~ +0.7 Volts
(ON)
(0)
TTL
PIN ASSIGNMENT CHART
Pin No.
Code
Function Status
1 DL
Digital Loop Test
Active
2 DSI Data Speed
Indicator
Not Applicable, Not Wired in TTL Cable
to Terminal
3 AL
Analog Loop Test
Not
Applicable,
Is Wired
in TTL Cable
4 DSS
Data Speed Select
Not Applicable, Not Wired
in TTL Cable
from Terminal
5
TR
Terminal Ready
Active
6
RS
Request
to Send Not
Connected, Always Off
(Issue
lB Logic
Card)
-- Always
On (Issue
2A Logic Card)
7
+5
+5 Volts
Active
8
Reserved for
Not Applicable,
Not Wired
in TTL Cable
future
9 GND
Circuit Ground
Active
10 Reserved
for
Not Applicable,
Not Wired in
TTL Cable
future
11
-12
-12 Vol ts
Active
12 Reserved for
Not Applicable,
Not Wired
in
TTL Cable
future
13 +12 +12
Volts
Active
14
DP Duplex Indicator
Not Applicable,
Is Wired
in
TTL Cable
from Terminal
15
DR
Data Ready
Active
16
TW2
1WX Indicator
Not Applicable,
Not Wired in
TTL
Cable
17 RD
Receive Data
Active
18 TWl
TWX Control
Not Applicable,
Not Wired
in
Tn.
Cable
19
SD Transmit
Data
Always Mark
20
Reserved for
Not Applicable,
Not Wired
in
TTL Cable
future

PART 2 -- INSTALLATION (Cont)
C. ASSEMBLY
MANUAL 373, 2-5
The 43 Teleprinter Basic RO Set is furnished fully assembled and tested with one of
the signal interfaces described on Page 2-3, B. INTERFACES ..
CAUTION: TO AVOID CONDENSATION ON THE ELECTRICAL COMPONENTS, THE TERMINAL SHOULD
BE ALLOWED TO ASSUME ROOM TEMPERATURE BEFORE UNPACKING, FOR EXAMPLE, WHEN BROUGHT
INTO A WARM HUMID ROOM FROM OUTSIDE SUBZERO TEMPERATURES.
1. UNPACKING
-a. Unpack the large carton. Refer to instructions on the container.
b. Remove tape securing the cover to the housing (see below).
c. Depress the cover locking tabs on the lower front of the cabinet and lift
the cover. Remove the packing detail securing the print head
(see be ION) •
d. Verify that the following items are included in the box:
1 - Set -- 43 Teleprinter Basic RO (43l0AAA, AAB, AAC, AAD, AAE, or AAF)
1 - Ribbon
1 - Manual, Installation and Routine Servicing, 373
1 -
Manual, Attendant, 372
1 -
Paper Holder (Sprocket Feed only)
1 Paper Supply Assembly (Friction Feed only)
TAPE
COVER LOCKING
TABS
COVER
'------
-----\- "\)
PAPER SUPPLY ASSEMBLY
(Friction Feed)
PAPER HOLDER
(Sprocket Feed)
NOT~: Fall-fold 12 by 8-1/2 inch paper (sprocket feed), 8-1/2 inch wide by 5 inch
diameter rolls (friction feed) and EIA and modular telephone cords must be
obtained locally or ordered separately. Refer to HTO for paper suppliers. EIA
and modular telephone cords can be ordered from Teletype Corporation (see Page
2-6).
2. TELEPHONE AND LINE CONNECTION
BOTICE: In the U.S.A., under the FCC registration program, the 43 Teleprinters
with 430750 terminal data units (TDU) may be connected directly to the telephone
switched network subject to the following conditions:
a. Connection must be through a standard six-pin miniature jack (USOC RJllC)
installed by the Telephone Company.
b. The telephone, if any is to be connected to the teleprinter, must be
registered or grand fathered (B~ll System 500 or 2500 type or equivalent)
and be reported as such to the local Telephone Company.