EDAN M3 - Troubleshooting Display and Operation Issues; Resolving Recorder and Network Link Failures

M3 Vital Signs Monitor Service Manual
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Bad connection of ④
power supply or Main
control board
Replace or repair ④
connectors
6.2 Display Failures
Failure Possible cause Solution
①Power switch board
damage
① Replace Power switch board
Bad connecting w② ire of
display
② Repair or replace connecting
wire
Damage of ③ Main control
board
Replace ③ Main control board
When powering on the
device, power supply is
in normal operation,
however, there is no
display or screen goes
black during normal
operation.
④ Keyboard display driver
failure
④ Replace keyboard main
control board
6.3 Operation, Recording, Network Linking Failures
Failures Possible cause Solution
① Keyboard is damaged. ① Replace keyboard.
Keys are disabled.
② Connecting wire of keyboard
is damaged.
② Replace or repair
connecting wire of
keyboard
Keyboard failure① Replace keyboard①
Sound is raucous or
there is no sound.
② Speaker or connecting wire
failure
② Replace speaker or
connecting wire
Recorder has no paper or ①
paper bail is not pressed down.
Install paper and press ①
down the paper bail
Recorder failure② Replace ② the recorder
③ Driving power of the recorder
has failure
③ Replace the power
supply
Recorder can not
execute printing
operation.
Connecting wire of the ④
recorder is damaged.
④ Replace or repair the
connecting wire of the
recorder
Record paper goes out
skewwhiffly.
Bad recorder installing or①
positioning.
Adjust the installation ①
of recorder.