STP 120 Tissue Processor - Service Manual
Page 8
Troubleshooting
Problem:
THE UNIT DOES NOT START
Symptoms:
The 'POWER' LED does not light up.
1. Disconnect the unit from the mains power supply
2. Check the mains power supply cable.
3. Make sure that the mains voltage is the same as the voltage indicated in
the window beside the mains switch. Change the operating voltage by
inserting a screwdriver in the slot
(see Figure). Open the fuse box
cover and invert the position of the red fuse holder as shown in the
diagram so that the correct voltage is displayed in the window.
Changing the
operating voltage
and fuse
replacement
Values of the fuses:
115 V
→
4 AT
230 V
→
2 AT
230 V
Check the power
supply fuses
H
av
e
t
h
ey
bl
ow
n?
YES
Try to determine why the fuses blow.
Make sure there is no short-circuit.
Correct the fault.
Replace the fuses (115V/4AT or 230V/2AT), as described
above and go to the next step.
NO
Make sure that the fuse has been inserted correctly.
Make sure that the clips holding the fuse in the voltage
selector make good electrical contact with the fuse body. If
they do not make good contact, close them slightly.
Connect the unit to
the mains power
supply
D
oes
i
t w
or
k
now
?
YES
End of the procedure
NO
Any measurements made inside the unit first require
accessing the electronic system through the base. Proceed as
explained below to place the unit in an inclined position
