11
Trouble Shooting
11.1 Possible problems
Page 52
CARDIOVIT AT-1 G2
A
rt.
no.
: 2.
511
235 Rev.:
d
11 Trouble Shooting
11.1 Possible problems
Error
Possible causes and indicators
Error localisation and troubleshooting
Unit does not switch
on, blank screen
• No mains supply; mains indica-
tor on the device is off.
• Battery empty/defective
Check the mains cable and connection
If the mains indicator is lit, it indicates that power is reaching the
unit and the internal power supply should be OK. Press and hold
the On/Off key for 10 seconds. Wait a few seconds and switch the
device on again.
Check / change the battery. If the battery is faulty, it is possible that
the unit cannot be switched on even if the mains supply is
connected.
If the screen is still not lit, it indicates a software error, monitor or
internal power supply problem. Call your local SCHILLER
representative.
QRS traces overlap
• Incorrect settings for patient
• Poor electrode contact
Change the sensitivity setting.
Check the electrode contact and re-apply the electrodes.
If the problem persists, call your local SCHILLER representative.
Note: Some patients have very high amplitudes and even on the
lowest sensitivity settings, the QRS traces can overlap.
"Noisy" traces
• High resistance between skin
and electrodes
• Patient not relaxed
• Incorrect settings
• Electromagnetic interferences
Check the electrode resistance (all leads need to be shown in
green)
Re-apply the electrodes.
Ensure that the patient is relaxed and warm.
Check all filter settings (
Menu key > Filter & formulas
).
Activate the myogram filter and change the cut-off frequency.
Ensure mains filter is correct for mains supply.
If the problem persists, call your local SCHILLER representative.
Specific devices labelled with the symbol
may interfere
with the ECG signal. Switch such devices off and/or generally
maintain a sufficient distance to other electric/electronic devices
(see chapter
11.2).
No printout obtained
after an auto mode
recording.
• No paper
• Paper incorrectly loaded
• Incorrect settings
Ensure that paper is loaded.
Reload paper.
Ensure that the paper has been inserted correctly with the black
mark at the top.
Check that the printout is activated for at least one setting, and that
Print after acquisition is activated (see page
42
and
43)
If the problem persists, call your local SCHILLER representative.
Printout fades, is not
clear, or the printout
is ‘patchy‘
• Old paper inserted
• Dirty print head
• Print-head out of adjustment
Ensure that new SCHILLER paper is inserted.
Note that the CARDIOVIT AT-1 G2 thermal paper is heat- and light-
sensitive. If it is not stored in its original seal, stored in high temper-
atures or is simply old, print quality can deteriorate.
Over a period of time, the printing ink from the grid on the paper can
form a film on the thermal print head. Clean the thermal print head.
If the problem persists, call your local SCHILLER representative.