Oki 3390, Microline Printer, 3391 specifications Local Test, Rts Cts Ssd Dtr Dsr

3.3Local Test

3.3.1Circuit test mode 3.3.1.1Setting

(1)Diagnostic test (set by menu)

(2)Test connector

Connect the test connector shown in Figure C-3-6 to the interface connector

Equivalent to Cannon DB-25P

TD

RD

RTS

CTS

CD

SSD DTR

DSR

2

3

4

5

8

11

20

6

Figure C-3-6 Test connector connection diagram

3.3.1.2Function

After the settings outlined in Section 3.3.1.1 are completed and power is turned on, the serial interface checks the message buffer memory and interface driver/receiver circuit. It then prints characters.

To start and stop this test, push the SEL switch on the front of the printer.

Details of this test are explained on the next page.

C – 11