Toshiba Tecra M2-S519 Maintenance Manual - Page 140

3 Tests and Diagnostics 3.10 Async Test 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 six 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: 9600BPS (subtests 01 to 04) 38400BPS (subtests 06, 07) Data: 8 bits and one parity bit (EVEN) Data pattern: 20h to 7Eh The following message will appear at the bottom of the screen when the subtest 01, 02 or 03 are selected. Channel#1 = XXXXh Channel#2 = XXXXh Channel#3 = XXXXh Select the Channel number (1/2/3) The serial I/O port address is specified by the XXXXh number. Select the serial port channel number and press Enter to start the subtest. Subtest 01 Wrap around (board) NOTE: To execute this subtest, a RS-232C wraparound connector (34M741621G01) must be connected to the RS-232C port in the Advanced Port Replicator III. The RS-232C wraparound connector wiring diagram is described in Appendix F. Subtest 02 This subtest checks the data send/receive function through the wraparound connector. 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. 3-26 TECRA M2 Maintenance Manual (960-468)