AT&T Bell System Dataspeed 5A Troubleshooting Manual

(
BELL SYSTEM PRACTICES
AT&TCo Standard
SECTION 582-102-315
Issue 4, December 1974
"DATASPEED*" TAPE-TO-TAPE SYSTEM
TAPE SENDERS 5A AND 5C
TROUBLESHOOTING
CONTENTS
1. GENERAL .....
2. EQUIPMENT REQUIRED
3. TROUBLESHOOTING
GENERAL ..... .
CABINET CIRCUIT -
5C SENDER
TAPE READER
TAPE SENDERS 5A AND
5C CIRCUITS
A. General
B. Data Set Interface
C. Control Circuits .
D. Motor Operate Circuit
E. Reader Operate Circuit
F. Data Storage Circuit .
G. Timing Pulse Circuit .
H. Power Supply Circuit
TROUBLE CHECKOUT
A. Tape Sender 5A
B. Tape Sender 5C .
C. On-Line Test
TROUBLESHOOTING
PROCEDURES . . . .
TROUBLESHOOTING TABLE
USAGE ........... .
Index for Table B - Symptom
or Trouble Report
Table B - Troubleshooting
5A and 5C Senders . . . .
Table C - 5A and 5C Tape
Sender Symbols, Abbreviations,
and References . . . . . . . .
*Registered Trademark of AT&TCo
PAGE
1
1
2
2
2
2
3
3
3
3
6
7
7
7
7
7
8
9
11
11
12
13
14
22
1. GENERAL
1.01 This section provides troubleshooting
procedures for , DAT ASPEED Tape
Senders 5A and 5C.
It
is reissued
to
update the
text and add to the troubleshooting table. The
following TCNs have been included in this issue,
928 and 1120. Since this is a general revision,
marginal arrows ordinarily used to . indic_ate
changes and additions are omitted. This sect10n
was formerly 592-807-300.
1.02 General description and operation in-
formation, installation procedures, and
adjustment and lubrication information are found
in related sections.
1.03 The description of circuit operation in
this section references schematic dia-
grams in another section. The circuit elements
shown on these diagrams are referenced in the
text and may be located according to the follow-
ing system:
6442 3 A 2
T
1.___ Numerical coordinate on
L_sheet
Alphabetical coordinate on
sheet
'-------Wiring diagram sheet num-
ber
'-----'---Schematic wiring diagram
number
2. EQUIPMENT REQUIRED
2.01 Troubleshooting requires the usual
tools (screwdrivers, wrenches, etc)
found in Section 570-005~800.
2.02 A standard volt-ohm-milliammeter,
some strapping wire, and test tapes are
also required.
Prepared for American Telephone and Telegraph Company by Teletype Corporation
©
1964, 1967 and 1974 by Teletype Corporation
All rights reserved
Printed in U.S.A.
Page 1