User's Manual

Service and troubleshooting
Instruction manual 973 SmartRadar LT Page 45
4.6.3 Replacing software (EPROM’s) on ICU board
a) XPU-2 EPROM / NOVRAM:
When no optional interface board (ICU_HPI) is installed;
Locate ICU board (refer to figure 4.3 and to Appendix C).
Remove EPROM and insert new EPROM (mind notch!).
Remove NOVRAM and insert new NOVRAM (mind notch!).
When optional interface board (ICU_HPI) is installed;
When 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.
Loosen the 4 Allen head screws, marked “B” in figure 4.3 (use Allen head key 2.5 mm).
Pull optional interface board away from ICU board so that it is released from its connector and
move it to above.
Locate ICU board (refer to figure 4.3 and to Appendix C).
Remove XPU-2 EPROM and insert new EPROM (mind notch!).
Remove NOVRAM and insert new NOVRAM (mind notch!).
Put ICU_HPI board in place (mind the connector!) and secure it with the 4 Allen head screws.
Put optional communication board in place (mind the connector) and secure it with the 4 Allen
head screws.
When no optional communication board (ICU_RS232/485 or ICU_HPO) is installed;
Loosen the 4 Allen head screws, marked “B” in figure 4.3 (use Allen head key 2.5 mm).
Pull optional interface board away from ICU board so that it is released from its connector and
move it to above.
Locate ICU board (refer to figure 4.3 and to Appendix C).
Remove XPU-2 EPROM and insert new EPROM (mind notch!).
Remove NOVRAM and insert new NOVRAM (mind notch!).
Put ICU_HPI board in place (mind the connector!) and secure it with the 4 Allen head screws.
b) APU EPROM’s:
Loosen the 4 Allen head screws, marked “C” in figure 4.3 (use Allen head key 2.5 mm).
Pull supply board away from ICU board so that it is released from its connector and move it to the right.
Locate ICU board (refer to figure 4.3 and to Appendix C).
Remove APU EPROM’s and insert new APU EPROM’s (APU-L and APU-H) (mind notch!).
Put ICU_GPS board in place (mind the connector!) and secure it with the 4 Allen head screws.
4.6.4 Replacing software (EPROM) on RFB-2 / DAB board
The ICU_GPS board and eventually installed optional boards can remain on the ICU board. However, all
wiring connected to them must be, temporary, disconnected.
• connector(s) CN1 (and CN2) on ICU_GPS board
• connectors CN1 and CN 3 on optional communication board
• connectors CN1 and CN2 on optional interface board
• connector CN5 on ICU board (blue wires, marked 7 and 8)
• connector CN6 on ICU board (white wires, marked T , T)
• connector CN7 or CN8 on ICU board (black wires, marked 5 and 6)
When the optional Infra-Red connector is installed, also disconnect temporary the cable to CN1 on ICU
board (black cable next to XPU-2 jumpers).
Loosen the 4 Allen head screws, marked “D” in figure 4.3 (use Allen head key 3 mm).
Pull ICU board with mounting plate away from RFB-2 / DAB board so that it is released from its connector
The RFB-2 / DAB board is now visible (refer to figure 4.3 and to Appendix C).
Remove DAB EPROM and insert new DAB EPROM (mind notch!).