Display Failures - EDAN iM3 Service Manual

Vital Signs Monitor Service Manual
Shut down suddenly

7.2 Display Failures

Phenomenon
Characters are displayed
normally, however
waveforms are displayed
intermittently.
When powering on the
device, power supply is in
normal operation, however,
there is no display or the
screen turns black during
normal operation.
Wrong characters
displayed on screen.
If the monitor is powered by
battery and shuts down suddenly,
maybe the battery is too low.
The monitor is stricken by
sudden high
lightning strike.
Bad connection of power input.
Power failure.
Main control board failure.
Possible Cause
Data communication
between main control board and
parameter module.
Malfunction in
driver circuit of the main
control board.
Wire malfunction for LCD
backlight power supply.
Damage of main control board.
Power board failure.
Bad connection of LCD display
are
screen wire
LCD display screen failure.
Please connect AC to the
monitor
battery.
Check the power supply and
voltage, e.g. grounded system.
Check the power input.
Replace the power supply.
Replace the main control
board.
error Replace the main control
board or parameter module
based on the error prompt.
the display Replace the main control
board.
Check
Reconnect
wire.
Replace main control board.
Replace the power board.
Check the connection wire of
LCD connection and main
control board.
Replace the LCD screen.
- 30 -
Troubleshooting
and charge the
Solution
the connection.
the connecting