User's Manual

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Service and troubleshooting
Page 44
Figure 4.3 Removing of boards for changing software (EPROM’s)
Item
Description
1 Supply board (ICU_GPS)
2 Optional communication board (ICU_RS232/485 or ICU_HPO)
3 Optional interface board (ICU_HPI)
4 ICU board
4.6.1 Replacing software (EPROM) on ICU_HPO board
Locate ICU_HPO board (refer to figure 4.3 and to Appendix C).
Remove EPROM and insert new EPROM (mind notch!).
4.6.2 Replacing software (EPROM) on ICU_HPI board
When no optional communication board (ICU_RS232/485 or ICU_HPO) is installed;
Locate ICU_HPI board (refer to figure 4.3 and to Appendix C).
Remove EPROM and insert new EPROM (mind notch!).
When an optional communication board (ICU_RS232/485 or ICU_HPO) is installed;
Loosen the 4 Allen head screws, marked “A” in figure 4.3 (use Allen head key 2.5 mm).
Pull optional communication board away from ICU_HPI board so that it is released from its connector
and move it to the left side.
Locate ICU_HPI board (refer to figure 4.3 and to Appendix C).
Remove EPROM and insert new EPROM (mind notch!).
Put optional communication board in place (mind the connector!) and secure it with the 4 Allen head
screws.