Operation Failures - EDAN iM3 Service Manual

Vital Signs Monitor Service Manual

7.3 Operation Failures

Phenomenon
Buttons are disabled.
Touch screen has no
reaction.
Turn the rotary knob,
but there's no
reaction.
Built-in scanner has
no emitting light or
is unable to scan.
Insert the USB flash
disk, and there's no
reaction.
Hoarse sound or no
sound from the
speaker.
Possible Cause
Button damage or main control
board damage.
The edge of the touch screen is
pressed.
Bad connection of touch screen
wire.
Touch screen damage.
Main control board failure.
Bad connection of the wire
between the rotary knob and
main control board.
Rotary knob switch damage.
Main control board failure.
Bad connection of the wire
between the scanner
parameter board.
The malfunction of the scanner
leads to the communication
failure with the main control
board.
The malfunction of the main
control board leads
communication failure with the
scanner.
USB flash disk damage.
Parameter board failure.
Main control board failure.
Malfunction in
subassembly of the main control
board.
Malfunction in the speaker or
connecting wire.
Replace the button or main control
board.
Check the assembling of the front
cover and the touch screen.
Check the connection. Reconnect
the connecting wire.
Replace the touch screen.
Replace the main control board.
Check the connection. Reconnect
the connecting wire.
Replace the rotary knob.
Replace the main control board.
Check the connection. Reconnect
and the connecting wire.
Replace the scanner.
Replace the main control board.
to the
Try another USB flash disk.
Replace the parameter board.
Replace the main control board.
the audio Replace the main control board.
Replace the speaker or connecting
wire.
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Troubleshooting
Solution