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5.3.1
Troubleshooting Preliminary Considerations
The most common problem occuring in B100 are
switch, control and operation^elated. A simple
procedure may be followed to help determine if
the problem is control and/or operation-related
or internal circuitry related by checking the
following:
Illegal Operation {Refer to Section II)
Improper Baud Rate Setting
Wrong Transmit or Receive Mode
Loose Interconnect Cable
5.3.2
Troubleshooting Flow Diagrams
A list of trouble-shooting flow diagrams is given
in Table 5-1. This index lists apparent failure
and refers the user to the proper flow diagram.
The Table is only intended to allow the user to
varify the component where trouble exists, and
not to indicate the specific problem. The user
is advised to swap the defective component and
have that component repaired or replaced by an
authorized service agent.
1.
Find the apparent trouble in the Trou
bleshooting Flow Diagram Index.
2.
Proceed to the specified Troubleshoot
ing Flow Diagram in the diagram section
and begin the troubleshooting procedure.
3.
If an adjustment procedure is referen
ced in the Troubleshooting Flow Diagram,
perform the adjustment and return to the
flow diagram to complete the trouble
shooting process.
4.
Reference is made to Timing diagrams
contained in (Section VI) this manual.
5.3.3
Full-DOplex Echoplex Test
A specially wired connector may be assembled
that will allow the operator to perform this test.
This connector tester allows the terminal to be
operated and tested independent of an external
data device. The connector mates with the Main
I/O Port. Set-up for the test is as follows:
FDX (Full Duplex Mode)
Baud Rate -- Any Setting
Test Connector Installed
in the I/O Port
5-2
Enter data from the keyboard as you would if
you were on-line to a computer. If data is dis
played on the screen properly, then the 8100
is transmitting and receiving data properly.
•
The Test Connector is wired as follows:
(Refer to Figure 5.1.)
Connects Transmitted Data Line out of
the terminal to received data line into the
terminal. Pin 2 to Pin 3 of the I/O Port.
Pin 3
Pin 2
Jumper between
Pjn 2 and Pin 3
CD
0
Amphenol Male Type
Connector
Beehive Part No. 606-0011-25 AP
Amphenol Part No. 17-20250-1
Figure 5-1
ECHOPLEX TEST CONNECTOR
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