Async Test - Toshiba T4500 User Manual

This subtest checks the output and bidirectional modes of the data control and status
lines through the printer wraparound connector.

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 computer's
asynchronous communication functions. Move the highlight bar to the subtest you want to execute
and press Enter.
Subtests 01 through 04 require the following data format:
Method:
Speed:
Data:
Data pattern: 20h to 7Eh
The following message will appear at the bottom of the screen when Subtests 01, 03, 04, and 05 are
selected:
Channel#1 = 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. Select the serial port channel
number, and press Enter to start the subtest.
Subtest 01 Wraparound (board)
NOTE: To execute this subtest, an RS-232-C wraparound connector (34M741621G01) must
be connected to the RS-232-C port. The wiring diagram for the RS-232-C wraparound
connector can be fournd in Appendix G.
This subtest checks the data send/receive function through the wraparound connec-
tor.
Subtest 02 Board (#1) <=> Board (#2) (T4500/T4500C only)
NOTE: To execute this subtest, an RS-232-C cable (9-pin to 9-pin) must be connected to
Boards 1 and 2. The wiring diagram for the RS-232-C direct cable wiring diagram can be
found in Appendix G.
3-24
Asynchronous
9600BPS
8 bits and one parity bit (EVEN)