Innomed Medical Heart Screen 60G Service Manual page 48

Innomed Medical
Problem
When turned on, the device always
starts with a memory error.
Serial line connection is not
working.
A single ECG channel is noisy.
Several ECG channels are noisy.
The mains filter (50 or 60Hz) has
no effect.
Baseline movement is too great.
2014.01.09
Heart Screen 60G-80G-L
Possible causes
Soldering is not satisfactory.
The battery,
or its connection / cable is
damaged.
The Innobase or device software
version is not appropriate.
PC settings are not appropriate.
The serial cable is damaged.
The device's serial line circuit is
damaged.
A single line in the cable or the
isolation is broken.
The environment noise is too great,
the mains ground protection
conductor is damaged,
or the amplifier is generating.
The noise is not appropriate for the
mains frequency
or environment noise is too great.
The amplifier's too great time
constant and high-impedance parts
can be a source of the problem; it is
possible, that the multiplexers
before the ADC or the DC isolating
capacitors are damaged.
May also be caused by condensing
humidity.
48/84
Service manual
Solutions
Check the soldering on the digital part
of the Main Board. Resolder the IC's
with the exception of the processor.
If it cannot be repaired, replace the
card.
Check the battery.
If it cannot be repaired, replace it.
Check battery cabling.
Check the Innobase version and the
Innobase software module version.
Check the device software version.
Check PC settings,
the serial cable,
and the device serial circuit.
Replace the patient cable.
Check the environment for
electromagnetic noise.
Check the mains ground protection
conductor continuity to the device
charging adapter connection input
point (-).
Check and repair the amplifier card
according to the documentation.
Software based filter malfunction is
not likely. Check the mains frequency
and the environment for
electromagnetic noise.
The baseline can be within +/- 1mm
on a 10-second recording. Check and
repair the amplifier card according to
the documentation.
If necessary, replace the HS80G card.
Check if it was caused by condensing
humidity.
D-5450-1-B_HS60G80GL_SM_ENG.doc