IBM 5280 Manual page 231

Distributed data system programmable data station maintenance analysis procedures
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5285 COMMUNICATIONS MAP
NON AUTO ANSWER COUPLER
PAGE
1
OF
5
ENTRY POINTS
FROM
I
ENTER THIS MAP
-------+----------------------
MAP
I
ENTRY
PAGE
STEP
NUMBER
I
POINT
NUMBER
NUMBER
-------+----------------------
3010
I
3010
001
A
B
(ENTRY POINT A)
1
001
2
009
USE
THIS
MAP
TO FIND CONNECTION
PROBLEMS
BY
USING
ANOTHER
TELEPHONE
WHEN
THE LOCAL STATION
HAS A COUPLER WITH NO
AUTO-ANSWER
FUNCTION
(CDT), (MANUAL CALL
70
A
MANUAL ANSWER STATION).
- Ensure
the
test
switch
(if
present) on the CDT type coupler
is in the normal position.
- Take the telephone off hook.
Do you hear the dial tone?
Y N
002
- Lift
switch.
the
data/talk
Do you hear the dial tone?
Y N
003
- Telephone problem.
mode
- Have the
customer
call
to
the
place
a
telephone
2 2
A B
company.
Copyright IBM Corp 1980
MAP 3013-1
EXIT POINTS
EXIT THIS MAP
I
TO
---------------+--------------
PAGE
STEP
I
MAP
ENTRY
NUMBER
NUMBER
I
NUI-1BER
POINT
---------------+--------------
3
016
0600
A
5
025
0600
A
5
028
0600
A
3
017
0600
A
4
023
0600
A
For this map use the
IBM CE
meter
with the dB adapter.
1749231 - CE meter
1749299 - dB adapter
1647116 - adapter plug assembly
2728116 - earphone
User
instructions
are supplied
with the parts.
Ensure that the CE meter is
set
to
the
.6
ma scale and the
+/-
DC switch is on
+
DC when
using
the dB adapter.
EC840874
PEC839787
MAP 3013-1

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