AT&T Bell System CDIF810 Checkout And Troubleshooting

BELL SYSTEM PRACTICES
AT&TCoStandard
SECTION 578-110-302
Issue 2, February 1974.
COMMUNICATIONS DISPLAY
INTERFACE MODULE CDIF810
CHECKOUT AND TROUBLESHOOTING
1.
2.
3.
4.
5.
CONTENTS
GENERAL
EQUIPMENT
CHECKOUT PROCEDURE
CHECKOUT TESTS
POWER FAIL URE .
BASIC TROUBLESHOOTING
PROCEDURE
RECEIVE SECTION
..
INTERRUPT SECTION
TROUBLESHOOTING CHARTS
FOR OPERATION WITH CDT
SET ( Charts 1 Through 5)
FOR OPERATION WITH
"DATASPEED*" 40 SET
PAGE
1
2
2
4
4
4
5
6
9
12-34
(Charts 6 Through 10) . . . . . 36-58
1. GENERAL
1.01 This section contains procedures
to
checkout and troubleshoot the
CDIF810 interface module when installed with
either a 2511 CDT or DATASPEED 40 terminal.
Checkout tests, test arrangement diagrams, and
trouble related charts are provided to aid in
isolation of an operational difficulty.
1.02 Issue 1 of this section was a limited
printing edition and was not made
available nor generally distributed on a system
wide basis. This reissuf' includes the latest trouble-
shooting information available at the time of this
printing. This is the first standard printing avail-
able for Bell System distribution.
*Registered Trademark of AT&TCo.
1.03 The checkout procedures and trouble-
shooting charts are written
to
enable
isolation of a trouble
to
module circuit cards,
interconnecting cabling, or the peripheral equip-
ment connected to the module.
1.04 If a trouble is isolated
to
a module
circuit card, the troubleshooting charts
will recommend the card be replaced. Before
replacing the card, use a known good circuit card
in that location
to
check that the original trouble
is corrected.
If
a trouble is not corrected using the
substituted part, the original card should be
reinstalled and the good part returned
to
mainte-
nance stock.
WARNING: ALL POWER TO THE
MODULE MUST BE OFF WHENEVER A
CIRCUIT CARD IS REMOVED OR
REPLACED.
1.05 If any of the circuit card assemblies are
found defective, they should be
returned to the nearest WE Service Center or
Teletype Corporation Product Service Center for
repair or replacement.
1.06 It is intended that the 1097SD logic
flow diagram provided in 0267WDP be
used in conjunction with this section when
troubleshooting the CDIF810.
1.07 Teletype Change Notice (TCN) infor-
mation has been reviewed and does not
affect the content of this document. However,
information contained in TCN 1516 and TCN
1581 does affect the TP322501 (Issue 1 and 2)
and TP322986 (Issue 1 only) module circuit card
assemblies respective
to
wiring changes.
1.08 In interest of brevity, reference to a
2511 CDT or DATASPEED 40 will be
listed as a send/receive device or set whenever the
procedure or instruction
is
applicable to either
set.
Prepared for American Telephone and Telegraph Company by Teletype Corporation
©
1971 and 1974 by Teletype Corporation
All rights reserved
Printed in U.S.A.
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