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