Maintenance Manual
![](/manual/toshiba/personal-computer-a1/maintenance-manual-english/images/img-140.png)
3 Tests and Diagnostics 3.10 Async Test
NOTE: To execute this subtest, an RS-232C wraparound connector 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.
3-26 Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)