39
Fluoride 8231
Undo locks and
swing open the case
to reveal the
microprocessor unit.
Microprocessor Unit
Hinged Case
1
2
Open microprocessor unit –
see Fig. A.2.
Remove processor PCB.
See Fig. A.3
Unlock and open cover plate and
hinge out to expose captive
screws.
Unscrew captive screws and
swing front cover upwards. Lock
into position using the hinged
stay on the right hand side.
1
2
3
APENDIX A – REPLACING SOFTWARE EPROM
Fig. A.1 Procedure to Open the Enclosure
Fig. A.2 Procedure to Access the Processor PCB
Warning.
Switch off the monitor and electrically isolate it
before carrying out the following steps.
A.1
Access the Transmitter Unit – Fig. A.1
Caution.
Employ normal antistatic precautions while
handling chips and PCBs.
Caution.
To avoid damaging EPROM, base or PCB, it is
essential that you use an approved IC extractor in this
procedure.
For example, a PLCC Extractor, RS Stock Number:
404-727
A.2
Access the PCB – Fig. A.2
