KEPCO KIT 219-0531, BHK-MG Firmware Upgrade - Manual (Page 3)

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KEPCO, INC. " 131-38 SANFORD AVENUE " FLUSHING, NY. 11355 U.S.A. " TEL (718) 461-7000 " FAX (718) 767-1102
http://www.kepcopower.com " email: [email protected]
FIGURE 1. DIGITAL BOARD A1, PROM U41 AND U42 LOCATION
3.4 MICROPROCESSOR U42 REPLACEMENT PROCEDURE (SEE FIGURE 1)
1. Locate Microprocessor, U42 on Digital board A1 (see Figure 1).
2. Take the wrist strap from kit and use the peel and stick area to connect the wrist strap to the chassis of the
BHK-MG. Place the wrist strap on your arm as indicated by the instructions for the wrist strap.
CAUTION:FAILURE TO USE THE ESD WRIST STRAP MAY DAMAGE THE PROM!
3. Touch the IC tube to the chassis of the BHK-MG. Open one end.
4. Pry out the Microprocessor U42 using an IC extractor. Insert the hook, first into one slot and then the other,
and gently pry out the Microprocessor. Place the Microprocessor in the tube and close the tube.
5. Open the other end of the IC tube and remove the replacement Microprocessor from the tube.
6. Insert the Microprocessor into the socket, ensuring the dot is oriented as shown in Figure 1 for U42.