Leica Biosystems ST4020 - Manual (Page 41)

41 Leica ST4020
7. Troubleshooting
7.3 Fault Detection and Correction List
Possible cause Issue Corrective action
• Check the cable connec-
tions at both ends, replace
the power supply cord if
necessary.
• Inform Technical Service.
• The power supply cord is
not plugged into wall outlet
properly.
• The power supply cord is
not plugged into the stainer
properly.
• The power supply in the
instrument is faulty.
• The instrument cannot be
started up
• Display appears blue, but
no text is visible. • The contrast may have to
be adjusted again.
• The control board in the
instrument is faulty.
• Adjust the contrast as
described in
Chapter 5.3 .
• Inform Technical Service.
• Unit powers up, but the
transfer mechanism does
not initialize.
• The motor does not turn.
• The main mechanism is
jammed.
• The motor seems to turn,
but the Lift bar does not
move because a belt is
worn or broken, or a set
screw on the motor has
come loose.
• Motor or control board faul-
ty.
• Check for visible external
obstruction and remove as
necessary.
• Inform Technical Service.