HP 39gs Self Test

[ON] [F4]

Individual tests can be performed by simultaneously pressing the ON key and the F4 key (the fourth key on the top row). Software build information is briefly displayed, then a test menu is displayed.

1.LCD

2.KEY

3.FLASH

4.SRAM

5.USB

6.RS232

7.BUZZER (Beep-Beep-Beep)

8.IRDA (Send & Receive)

A.AUTOTEST (Merry-Go-Round, till battery is flat).

Simultaneously press ON and F3 (the third key on the top row) to exit test mode.

[ON] [F3]