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...APPENDIX A
A.3 Removing the PCB – Fig. A.3
A.4 Changing the EPROM – Fig. A.4
Extract IC1 using an approved tool
1
– see Caution in Section A.1.
IC5
IC2
IC3
Fig. A.4 Replacing the Software EPROM
40
Fig. A.3 Procedure to Remove the PCB
Fit the replacement IC
2
– press home firmly.
See Section A.5 for
3
reassembly instructions.
IC4
IC1
IC11
Remove the four screws attaching the PCB to
1
the assembly.
Note that there are washers between the PCB
cover and the PCB.
2
Withdraw the PCB and turn it over to
reveal the component side.
3
Locate and change the EPROM IC1 – see Fig. A.4.
A.5 Completing the Procedure
1) Fit the PCB using the reverse procedure in
Fig. A.3.
Important Note. Ensure that the washers
are fitted between the PCB cover and the
PCB.
2) Close the microprocessor section using the
reverse procedure in Fig. A.2.
3) Close and lock the hinged cover – Fig. A.1.
4) The monitor may now be put into service.
5) Check program parameters – see Section 6.
6) Carry out a routine 2-point calibration.
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