STP 120 Tissue Processor - Service Manual
Page 12
Problem:
NO DISPLAY
Symptoms:
•
The display does not light up or only black lines appear on the
front panel display
•
Text or strange symbols appear on the display
•
The display lights up but no text appears
Adjusting the contrast:
Adjust the contrast of the display by simultaneously pressing the UP
and DOWN keys for a few seconds.
If no text appears after this time, measurements should be taken
inside the unit
Measurements
:
Any measurements made inside the unit first require accessing the
electronic system through the base. Proceed as described on pages
9 and 10 and place the unit in an inclined position.
Pay close attention to the precautions described in ATTENTION
and WARNING
1. Disconnect the unit from the mains power supply
2. Make sure that the connectors of the flat connection strips
between the keyboard and the MICCAR V30 circuit board are
inserted correctly.
Check the flat strips
A
re t
h
ey
i
ns
er
ted
co
rr
e
ct
ly?
YES
Change the front keyboard and the flat strips between the
front keyboard and the MICCAR V30 circuit board
Connect the unit and make sure it operates correctly
NO
Make sure they are firmly pushed home.
Connect the unit and make sure it operates correctly
Check that the unit
functions correctly
D
oes
i
t w
or
k
?
YES
Disconnect the unit from the mains power supply.
Replace the cover lower.
Place the unit in normal operating position.
End of the procedure
NO
Disconnect the unit from the mains power supply.
Replace the MICCAR V30 circuit board
Connect the unit and make sure it operates correctly
If there is still no display, go back to the beginning and repeat
all the steps
