2087.5 Maintenance and Testing• The meter needs little or no maintenance with normal use. It automatically tests its own systems everytime you turn it on and lets you know if something is wrong. For detailed information on troubleshooting themeter, see Chapter 8, Troubleshooting.• If you drop the meter or think it is not giving accurate results, ensure your test strips and control solutionhave not expired, and then perform a control test.• Perform a control test with each new vial of test strips.• To test the meter display, turn the meter off, and then press and hold +. The display cycles through colors(red, blue, green, and white). If any part of the display does not change colors, call the Accu-Chek EnquiryLine on 1800 251 816.• If the meter is not working properly, call the Accu-Chek Enquiry Line on 1800 251 816.50839_06434240002.indb 208 7/2/12 3:26 PM