Checkup and safety document
7.4.1.1 Visual inspection
Pass Fail
The device record is present and kept up to date
The user manual and the safety manual are present
Device label and suppliers label are clearly readable
The enclosure of the appliance is undamaged
Mains entry, equipotential post and the sub-D connector are undamaged
Patient cable connectors and vacuum posts are undamaged
The control knobs, keys and display are undamaged
Only accessories listed in the user manual are being used
Mains wire, electrodes and cables are undamaged
7.4.2 General Functional Inspection
Pass Fail
The automatic self test on power up does not report any errors
The display does not show any defective pixels or lines
All keys are functioning
The control knobs operate properly: 1 mA/click up when turning clockwise and down
when turning counter clockwise respectively
7.4.3 Functional Inspection Electrotherapy
Pass Fail
Connect two 500 Ω loads to both normal electrode pairs. Attach to them an oscilloscope
(black to ground) with its controls set to the values as shown in the pictures below.
Press
and select “Program number” (3
rd
softkey). Set the program number to 138
with the
-key and “go to selected program” with the 1
ste
softkey (direct current). Turn
up the intensity of both channels to maximum with the control knobs.
The output signals as seen on the oscilloscope correspond with figure 1
The output currents matches the values shown on the display within ±10%
The two yellow lights next to the output connectors are on
The polarity changes over to negative when set to “RED-“ for both channels
The warning message “bad connection to patient” appears when the load is disconnected
After this warning appeared the intensity is decreased to zero
Phyaction Guidance E/C – service manual version 0.5 Page 27
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