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5.PROCEDURE

5.1Verify that the revision level stamped on the EDE-30-1 unit packing box is A( 1. Only packing boxes

with a UP stamped after the revision level contain the microprocessor required to upgrade the EDE-30-1 to revison B. For location of revision level, see Figure 1B.

5.2Turn the EDE-30-1 unit face down and loosen the cross head retaining screw located at the bottom of the EDE-30-1 housing (See Figure 1A).

5.3Refer to Figure 1A and separate the lower and upper housing halves of the EDE-30-1 unit by applying inward pressure to the upper half while at the same time lifting up on the lower half.

5.4Using the chip extraction/insertion tool remove the installed microprocessor ICl from its socket (Refer to Figure 21. Follow the IC extractor manufacturer’s recommended procedure.

5.5Using the same tool as in step 5.4, and following the IC insertion tool manufacturer’s recommended procedure, insert the supplied microprocessor into the ICl chip socket. Observe IC polarity and ensure that the IC pins are not bent and that all pins are properly inserted in the IC socket (Refer to Figure 21.

5.6Using the revision 3 label provided, change the revision number on the PCB to REV 3 (See Figure 2).

5.7Use a revision B label and change the revision level on the outside of the bottom half of the EDE-30-l unit (See Figure 1C). Affix the other two revision B labels to the outside of the packing box, in two places, following the lot number (See Figure 1B).

5.8Reassemble the upper and lower housing halves of the EDE-30-1 unit.

5.9Test the unit for proper operation both as a DSS/BLF Console and as a CO ADD-ON Module. Refer to the Electra Mark11 Installation Service Manual, Chapter 3, for programming instructions and Chapter 4, Station Operation, for operating instructions.

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