Self-Tests on Starting

Each time the Tech 2 is started it automatically performs a self-test of its own functionality. When the Tech 2 is started the words "SYSTEM INITIALIZING" appear on the display for about four seconds. The self-
test is performed during this period. At the end of the self-test the Tech 2 emits audible signals, as follows:
^ No audible signal at all indicates a fault in the sound transducer. The Tech 2 can still be used.
^ An audible signal indicates that the self-test was successful. The Saab logotype and Tech 2 then appear automatically on the display (see illustration).





^ A series of three audible signals indicates that a part of the Tech 2 is not in satisfactory working order. In such cases the display will show the tests performed and their status, "PASS" or "FAIL".

If a "Fail" message is displayed, you can proceed as follows:
1. Turn off the Tech 2.
2. Check all connections.
3. Check that nothing is resting on the keypad.
4. Start the Tech 2 again.





If the trouble persists, the Tech 2 needs overhauling. In some cases, however, which are shown in the menu on the right, fault diagnosis will be allowed to continue until a replacement unit arrives through the Tech 2's exchange program (see under "Technical Support" in this section).
^ "UART...Fail" supports all functions except communication via the RS232 port.
^ "SCI... Fail" supports all functions except communication via the RS485 port.
^ "RTC... Fail" or "CLKMEM ... Fail" refers to the clock and may indicate a circuit of battery fault.

In the above cases, fault diagnosis will continue if any key is pressed.

In the event of a keypad fault, the Tech 2 will not complete the starting procedure. The "SHIFT" lamp will light up instead.

All other types of fault message indicate that the functionality of the Tech 2 may be affected and fault diagnosis carried out with it should therefore not be continued.