Running the Service Utilities Troubleshooting
PageWriter TC 70 Cardiograph Service Manual 3-41
Touch Screen Calibration and Test
The touch screen can be calibrated at any time. Calibration is recommended if it requires many
attempts to select an item on the screen, or if selecting items on a specific area of the screen is
difficult.
The touch screen may also require calibration if the cardiograph is used in different settings
(seated instead of standing) or by users of significantly different height. The touch screen may
need to be recalibrated to work optimally in the new setting or with the new user. The Touch
Screen Calibration procedures and tests include:
Force Calibration procedure
Touch Calibration test
Recommended use of these procedures and tests for maintenance and diagnostic purposes is
described in the following table.
Table 3-15 Touch Calibration Test Recommendations
Procedure or Test Recommended Use...
Force Calibration Procedure Routine touch screen calibration when the
cardiograph is used in a different setting (seated or
standing) or by users of significantly different
height
To improve overall touch screen performance
when items on the touch screen are difficult to
select
Touch Calibration Test
Perform this test after performing the Force
Calibration procedure
When calibration is not improved after the Force
Calibration procedure (that is, items are still
difficult to select on the touch screen)
When any part of the touch screen appears
unresponsive
When the results of the touch screen calibration
need to be reviewed by Philips Response Center
representatives to identify a technical problem
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