63 lines
2.1 KiB
Plaintext
63 lines
2.1 KiB
Plaintext
|
AST RESEARCH TECHNICAL BULLETIN TB-0134 11-11-85
|
|||
|
|
|
|||
|
|
|
|||
|
|
AST-3780 TROUBLESHOOTING
|
|||
|
|
|
|||
|
|
|
|||
|
|
The intent of this Technical Bulletin is to help the installer of
|
|||
|
|
AST-3780 isolate any problems which may arise. The bulletin
|
|||
|
|
will cover the situations reported most frequently by users of
|
|||
|
|
AST-3780.
|
|||
|
|
|
|||
|
|
PROBLEM
|
|||
|
|
AST-3780 is activated and the connection to the host has been
|
|||
|
|
established. The transmit option is selected from the AST-3780
|
|||
|
|
software and the modem immediately starts streaming data.
|
|||
|
|
|
|||
|
|
Streaming, in this context, refers to a constant request-to-send
|
|||
|
|
coming from the DTE interface, while the DCE interface is
|
|||
|
|
supplying a clear-to-send response, and the transmit data line is
|
|||
|
|
constantly sending a stream of data.
|
|||
|
|
|
|||
|
|
SOLUTION
|
|||
|
|
There are only six reasons for this situation to occur. Their
|
|||
|
|
causes and resolutions are listed below in "most frequently the
|
|||
|
|
cause" order:
|
|||
|
|
|
|||
|
|
I. The cable from the CC-432 card to the modem is missing
|
|||
|
|
line 15 or 17, or both.
|
|||
|
|
|
|||
|
|
A. There is only one accurate way to assure that the lines
|
|||
|
|
are there, and that is through the use of an OHM meter.
|
|||
|
|
|
|||
|
|
1. If an OHM meter is unavailable, make the user
|
|||
|
|
remove the hoods from the cable and visually
|
|||
|
|
inspect both ends.
|
|||
|
|
|
|||
|
|
II. The modem is not supplying transmit and receive clocks.
|
|||
|
|
|
|||
|
|
A. Check your modem manual to make sure that your modem
|
|||
|
|
is optioned for internal clocking.
|
|||
|
|
|
|||
|
|
III. The CC-432 card has Jumpers 2 and 4 enabled instead of
|
|||
|
|
1 and 3.
|
|||
|
|
|
|||
|
|
IV. There is an interrupt conflict within the PC.
|
|||
|
|
|
|||
|
|
A. Other BSC cards
|
|||
|
|
B. Network cards
|
|||
|
|
C. Third party hard disk
|
|||
|
|
|
|||
|
|
V. AST-3780 configuration file is selected for a different
|
|||
|
|
interrupt request line than that selected on the CC-432
|
|||
|
|
board.
|
|||
|
|
|
|||
|
|
A. i.e., software selected for IRQ-2 while the CC-432
|
|||
|
|
is selected for IRQ-7.
|
|||
|
|
|
|||
|
|
VI. The CC-432 board is defective and needs to be returned
|
|||
|
|
for repair.
|
|||
|
|
|
|||
|
|
A. To insure that this is the cause, run the CC-432
|
|||
|
|
test supplied in the package.
|
|||
|
|
|