Async Test - Toshiba T4400SXC Maintenance Manual

3.10 Async Test
To execute the T4400SXC Async Test, select 7 from the Diagnostics Test Menu, press Enter
and follow the directions displayed on the screen. The async test contains six subtests that
test the T4400SXC's asynchronous communication functions.
Subtests 01 through 04 require the following data format:
Method:
Speed:
Data:
Stop bit:
Data pattern:
Asynchronous
9600 BPS
8 bits and one parity bit (EVEN)
One stop bit
20h to 7Eh
The following message will appear when subtests 01, 3 to 5 are selected:
channel#l
=
XXXXh
channel#2
=
XXXXh
channel#3
=
XXXXh
Select the channel number (1-3)
The serial I/O port address is specified by the XXXXh number.
The T4400SXC supports three serial port channels. Select the serial port channel number,
and press
Enter
to start the subtest.
Subtest 01 Wraparound (board)
This subtest checks the data send/receive function through the wraparound
connector.
NOTE: To execute this subtest an RS-232-C wraparound connector
(34M741621G01) must be connected to the RS-232-C port. The RS-232-C
wraparound connector wiring diagram is described in Appendix F.
Subtest 02 Board (#1)
<=>
board
(#2)
3-24
This subtest checks the data send/receive function through the RS-232-C direct
cable.
NOTE: To execute this subtest an RS-232-C cable (9-pin to 9-pin) must be
connected to channels 1 and 2. The RS-232-C direct cable wiring diagram is
described in Appendix F.