Schiller AT-101, Руководство по обслуживанию

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Page 37
Care & Maintenance 5
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Service Handbook Functional test 5.2
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5.2.10 Parallelism test
This will test the mechanical adjustment of the print head to the paper grids.
5.2.11 ECG amplifier
1. Start the manual printout.
2. Press the "1 mV" key.
3. Stop printout and check the parallelism of the print to the paper grid.
– All calibration impulses should be lined up vertically and exactly below one an-
other.
– The maximum deviation may not be more than
!
0.5 square. If the values are
outside this tolerance, the mechanical adjustment of the print head has to be
corrected.
Fig. 5.3 Printer adjustment test
1. Start the manual printout with 25 mm/s and 20 mm/mV.
2. Press the "1 mV" key
3. Check the amplitude height of the calibration impulse according to the paper grid.
It should be 20 mm
!
0.5 square.
If some values are outside the tolerance, the ECG amplifier has to be replaced.
Fig. 5.4 ECG amplifier