Bell System DATASPEED 4540 Testing And Troubleshooting

BELL SYSTEM PRACTICES
AT&TCo Standard
SECTION 582-300-500
Issue 2, June 1980
"DATASPEED*" 4540 STATION ARRANGEMENTS
TESTING AND TROUBLESHOOTING
CONTENTS
PAGE
1.
GENERAL ....................
1
2.
TESTING .....................
3
A.
Controller Self-Test ..........
3
B.
Printer Local Tests ..........
8
C.
Kn/Controller Local Test .....
13
D.
Data Set Analog Loopback
Self-Test ..................
27
E. End-to-End Installation
Test ......................
30
3.
TROUBLESHOOTING ...........
34
A. Controller Analysis ..........
. 34
B. Power Supply Analysis .......
38
C. Display Analysis ............
41
D.
Monitor Analysis ............
46
E.
Keyboard Analysis ..........
47
F.
Printer Analysis .............
53
G.
On-Line Operations
Analysis ...................
59
H.
SSI Cable Analysis ...........
66
I.
SSI Cable Testing ............
67
1. GENERAL
1.01 This section includes all testing and trouble
analysis of the DATASPEED 4540 Station
(hereafter referred to as 4540-Type).
1.02 This section is reissued to include the
45FG110/AC/01 program circuit card.
1.03 Troubles isolated to t~e telephone lines or
associated systems ar~ not analyzed in
this section.
1.04 The correction of troubles in this section
is based on replacement of defective
major subassemblies (eg, monitor, display base,
keyboard, printer, controller, power supply,
*Registered Trademark
of
AT&TCo.
controller circuit cards, etc). Field level repair
of the monitor, printer, 40-style keyboard and 45-.
style keyboard is given in Sections 582-213-500,
582-210-500, 582-211-500, and 582-311-500
respectively. Repair of defective controller
power supply, controller circuit cards, and display
base should only be done at an authorized Service
Center.
Note: When ordering replaceable parts or com-
ponents, unless otherwise specified, prefix each
part number with the letters "TP" (ie, TP410311).
1.05 The following Caution applies whenever it
becomes necessary to replace a 45FG110-
type program circuit card in the controller:
Caution: If the program circuit card is any
45FG110-type other than 45FG110IAA, simply
depress the PF 1 key after replacement. If the
program card is a 45FG110IAA, and all of the
keyboards in the station are typewriter-style (ie,
40K104, 40K203 or 45K301), re-option the Sta-
tion for line code not originally intended. ( eg, If
originally intended line code is EBCDIC, then
option (See OPTIONS in 582-300-200, Installa-
tion) station for ASCII line code and depress SIR.
Then option station back to EBCDIC line code and
depress SIR again). This action will cause the SCC
to down-load all KDs, with the proper applications
program, thus assuring correct operation at all KDs.
If 40Kl05 Type Internal Numeric Cluster style
Keyboards are part of the station, then perform
the following after replacing the 45FG110/AA
program circuit card.
(a) Perform a controller self-test per Chartl.
(b) When the "End-of-Test" pattern appears,
depress the test switch and hold it down
for approximately 30 seconds ( every 5 seconds,
controller • RUN indicator blinks). This will
cause a default message to appear on the first
KD (device 0).
(c) Depress at first KD (device O); CONTROL
( or NUMERIC) and T together.
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1973, 1975, 1976, 1977, 1978, 1979 and 1980 by Teletype Corporation
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