to change toner, 1st power down using the switch on the side, then:
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1. Press the cover release and open the printer’s top cover fully.
WARNING
If the printer has been powered on, the fuser may be hot. This area is clearly labelled. Do not touch.
2. Note the positions of the four cartridges. It is essential that they go back in the same order.
(a) Slide the colored release collar (1) on the cartridge to be replaced fully towards the right hand side of the printer.
…
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Useful for a test print:
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How to Print the Menu Map __________
The Menu Map provides a listing of the current printer menu settings. To print one out:
1. Press the OK button.
2. Press the down arrow key to go to the Information Menu.
3. Press OK.
4. Press OK to select Print Menu Map.
The Menu Map prints and the printer goes back on line.
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http://www.oki.com/us/printing/download/C330%20C530%20User%20Guide_31170.pdf?id=59321301
https://www.amazon.com/PiKo-1-Electronic-Peak-Flow-Meter/dp/B0002W2A1I
Piko-1 Digital Lung Function FEV-1
http://www.quickmedical.com/downloads/nspire-piko1_manual.pdf
takes 2
type 357 silver oxide button batteries
