Toshiba A20-S259 Maintenance Manual - Page 139

3.10 Async Test 3 Tests and Diagnostics 3.10 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: Speed: Data: Data pattern: Asynchronous 38400BPS (Subtests 06, 07) 8 bits and one parity bit (EVEN) 20h to 7Eh Subtest 06 FIR/SIR Point to Point (send) Subtest 07 NOTE: To execute subtests 06 and 07, each computer must have access to the other computer's infrared port. This subtest sends 20h through 7Eh data to the receive side, then receives the sent data and compares it to the original data through the FIR/SIR port. FIR/SIR Point to Point (receive) This subtest is used with subtest 06 described above. This subtest receives the data from the send side, then sends the received data through the FIR/SIR port. Satellite A20 Maintenance Manual (960-444) 3-27