5. Removal and Replacement of Major Components and Modules
5-59
M. EMI FILTER PCB (Reference Drawing: 403-00132)
Removal
1. Ground strap must be worn.
2. Remove Power Driver Module. (See Step V.)
3. Unplug EMI Cable from EMI Filter PCB, JP4.
4. Remove 8X pan head Phillips screws from EMI Filter PCB.
5. Remove EMI Filter PCB and store in a static proof bag.
Installation
1. Ground strap must be worn.
2. Reinstall 8X pan head Phillips screws into EMI Filter PCB.
3. Reattach EMI Cable to EMI Filter PCB, JP4.
4. Reinstall Power Driver Module. (See Step V.)
5. Perform System Operational Check-Out, Chapter 7.
N. EPROM (ICU 108 on CPU Board) REPLACEMENT
(Reference Drawing: 403-00107)
Removal
1. Ground strap must be worn.
2. Remove the instrument cover. (See Step A Removal, 1 – 7.)
3. Lay the unit flat on the door.
4. Unplug membrane Panel cable from CPU PCB.
5. Use the IC Removal tool, pull EPROM (ICU 108) from the socket
of CPU PCB.
Installation
1. Ground strap must be worn.
2. Insert EPROM (ICU 108) in the socket, observe pin 1 and make
sure all pins are in the socket. Figure 3.
3. Reattach Membrane Panel cable, using rocking motion and push
in as far as in can go in.
4. Perform ‘Power Module and Pump’ calibration. Chapter 6.
5. Refer to Step A Installation, 1 – 5, to reinstall the instrument cover.
6. Perform System operational Check-Out, Chapter 7.
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