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9. TROUBLESHOOTING
Troubleshooting Chart
Screen Message or Problem
Baseline drift
Squared line(s) display on the multi-lead
rhythm display screen or on the screen
during the exercise test
Muscle noise
Treadmill does not respond to commands
from the ELI 280
Z-fold writer paper will not feed out
Z-fold writer not printing
Uneven printing of ECGs or reports
Treadmill belt starts to slip
RA/LL/C3/C5 FAIL
Cause
Poor skin-to-electrode contact.
Lead fail caused by poor skin-to-
electrode contact.
Broken lead wire/cable.
Electrode placed over muscle or fatty
tissue.
Equipment powered up in wrong
sequence.
Treadmill power switch off, or
treadmill interface cable not properly
attached.
Emergency stop switch is engaged.
Paper jammed.
No paper in tray.
Open writer door.
Printer head needs cleaning.
When loose it can shift.
One or more leads are in fail.
Correction
Reprep skin and replace faulty
electrode.
Correct faulty lead(s) identified in
upper right corner of the screen.
Replace patient cable.
Find stable electrode site, reprep skin,
and apply a new electrode.
Turn power to the treadmill OFF.
Wait one minute and turn power back
ON. Proceed with test.
Secure the treadmill to the ELI 280
cable connections. Turn treadmill
main power switch ON. (Switch is
located at the base of the treadmill
hood, left side.)
Reset emergency stop switch by
turning clockwise one-quarter turn.
Reset the ELI 280.
Open writer cover and remove jammed
paper.
Insert new packet of paper in tray.
See if writer door is latched.
Refer to printer head cleaning
instructions in the ELI 280 user
manual.
Tighten adjustment bolts on both sides
until slippage stops.
Connect the electrodes to turn off the
warning message.
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