23Section 4 Start up4.1 Switch on the instrument, startup process1. Connect the power cable to the mains outlet.2. Switch on the instrument by using the power button next tothe display.3. The instrument starts automatically with a startup processlasting approximately 45 seconds. The display shows thelogo of the manufacturer. At the end of the startup process, astartup melody is heard.Note: Wait approximately 20 seconds before switching on again so asnot to damage the electronics and mechanics of the instrument.4.2 Language selectionThe DR 3900 software includes several language options. Thefirst time the instrument is switched on, the language selectionscreen will be shown automatically after the startup process.1. Select the required language.2. Press OK to confirm the language selection. The self-checkwill then start automatically.Change the language settingThe instrument functions in the selected language until the optionis changed.1. Turn the instrument on.2. During the startup process, touch any point on the screenand maintain contact until the option for selecting a languageis shown (approximately 45 seconds).3. Select the required language.4. Press OK to confirm the language selection. The self-checkwill then start automatically.4.3 Self-checkEach time the instrument is powered up, a test program begins.This procedure, which takes approximately two minutes, checksthe system, lamp, filter adjustment, wavelength calibration andvoltage. Each test that functions correctly is marked accordingly.The Main Menu is displayed when diagnostics are completed.Note: In the event of further error messages during the test program,refer to Section 8, page 133.
