TROUBLESHOOTING
105
Display Troubleshooting Chart
LCD Message
Problem
Correction
Screen is dark
The AC power cord is not
connected to a grounded
electrical outlet or is damaged.
Ensure that AC power cord is not
damaged and is firmly connected to AC
power connector on rear of
electrocardiograph. The green LED
next to the power button is lit when AC
is correctly connected.
Ensure that electrocardiograph is
plugged into grounded electrical outlet.
If AC power is being used and the AC
power switch is set to the On position,
but the AC power on indicator light does
not illuminate and the display is still
dark, contact Welch Allyn Technical
Support.
Electrocardiograph is in
Standby Mode
Press the On/Standby button to return to
active use.
Electrocardiograph will not
power on.
Disconnect the AC power cable from
the wall outlet and depress the On/Off
button for >30 seconds.
Plug AC power cord into wall outlet
and follow the instructions on the
display.
If problem persists, contact Welch
Allyn Technical Support.
The screen does not turn on
when the lid is lifted.
Press the power button once. If the
Welch Allyn logo does not come on
within 10 seconds, press and hold the
power button for >30 seconds.