Toshiba M10 - Manual (Page 132)

3 Tests and Diagnostics 3.9 Async Test
3-26 Satellite Pro M10 Series Maintenance Manual (960-431)
3.9 Async Test
To execute the Async Test, select 7 from the DIAGNOSTIC TEST MENU, press Enter and
follow the directions displayed on the screen. The Async test contains two subtests that test
the asynchronous communication functions. Move the highlight bar to the subtest you want
to execute and press Enter.
Subtests require the following data format:
Method: Asynchronous
Speed:
38400BPS (Subtests 06, 07)
Data: 8 bits and one parity bit (EVEN)
Data pattern: 20h to 7Eh
Subtest 01 Wraparound (board)
NOTE: To execute this subtest an RS-232C wraparound connector
(34M741621G01) must be connected to the RS-232C port. The RS-232C
wraparound connector wiring diagram is described in Appendix F.
This subtest checks the data send/receive function through the wraparound
connector.
Subtest 02 Point to Point (send)
NOTE: To execute this subtest, two machines must be connected with an
RS-232C direct cable. One machine should be set as “send”(subtest 02)
and the other set as “receive” (subtest 03). The wiring diagram for the
RS-232C direct cable is described in Appendix F.
This subtest sends 20h through 7Eh data to the receive side, then receives the
sent data and compares it to the original data.
Subtest 03 Point to Point (receive)
This subtest is used with subtest 02 described above. This subtest receives the
data from the send side, then sends the received data.
Subtest 04 Interrupt Test
This subtest checks the Interrupt Request Level of IRQ 4, 3 and 5 from the
send side.