STEPRACE: Service & Maintenance Manual - rev. 1.2
Page 7.3
7.2. DISASSEMBLING THE EPROM
Figure 7.2-1
1. Turn off the machine and unplug the mains
lead from the wall outlet.
2. Back off the 4 fixing screws a of the
protective cover using a small Philips
screwdriver.
3. Remove the protective cover.
The older model of protective cover is
fixed to the display with only 2 screws.
Figure 7.2-2
4. Remove the EPROM b from its socket using
an IC extractor tool.
Figure 7.2-3
To reassemble the EPROM:
1. Make sure that reference index c on the
EPROM coincides with reference notch d on
the socket.
2. Be careful to center the EPROM pins above
the corresponding holes in the socket.
3. Push the pins into the socket.
The EPROM can be irreversibly
damaged if the reference index on the
EPROM is not correctly aligned with the
notch on the socket, or if its pins are
bent.
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