SE-1200 Series Electrocardiograph Service Manual Inspection and Troubleshooting
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1.
System Troubles
Conditions
Possible Causes
Actions
When the mains supply is
used, you can not turn on
the electrocardiograph.
①
Fuse failure
②
Power board or main
board failure.
③
Silicone
keyboard
failure
①
Replace the fuse
②
Replace the power board
or the main board
③
Replace
the
silicone
keyboard
When the battery is used,
you can not turn on the
electrocardiograph.
①
Battery failure
②
Main board or power
board failure
③
Silicone
keyboard
failure
①
Replace the battery
②
Replace the main board or
the power board
③
Replace
the
silicone
keyboard
The electrocardiograph fails
to function.
①
Strong interference of
electric networks
②
Main board failure
③
The plug-in unit on
the main board or the
power supply failure
①
Inspect the power supply
and grounded system.
②
Replace the main board
③
Replace or repair the
plug-in unit
Fuse is burned when you
turn on the
electrocardiograph.
①
The power supply or
other
components
short-circuit.
①
Open
the
electrocardiograph
for
further examination
Fuse is burned when the
device connects to a certain
component.
①
This
component
short-circuits.
①
Replace this component.
2.
Display Troubles
Conditions
Possible Causes
Actions
Some characters displayed
on the LCD screen are
missing.
①
LCD screen failure.
①
Replace the LCD screen
The LCD screen is dark.
①
The brightness of the
LCD screen is not
adjusted well.
②
LCD screen failure
①
Adjust the brightness of the
LCD screen in the
Display
Setup
window.
②
Replace the LCD screen
