1. Open the Monitor and wait for it to switch off (30 seconds).

2. When the Monitor has switched off, insert a PERSONA Test Stick into the Test Stick Slot, checking the position carefully, as there will be no flashing Yellow Light to tell you that the Test Stick is correctly inserted.

3. Press and hold the 'm' Button down while you complete steps 4,5 & 6 below.

4. Press the Opening Catch to turn the Monitor on.

5. A (Book 3) Symbol will be displayed*. Continue to hold the 'm' Button and leave the Test Stick in position.

6. After approximately 15 seconds, all 3 lights will flash briefly and all symbols on the Display Screen will be shown. A (Book 3) Symbol will again be displayed. The 'm' Button can now be released and the Test Stick removed.

7. You should see the following symbols on your display screen '--m'. Your PERSONA Monitor is now reprogrammed and ready for use.

*If the Book Symbol is not displayed, the Test Stick is not inserted correctly.