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73J008 REV A
Figure 1. Open the Top Cover
PROM Installation Guide
4. Locate and replace the appropriate PROMs. Remember to align pin 1 on the PROM with pin 1 in
the socket. All PROMs have a small cutout at one end which indicates the location of pin 1. The
printed circuit board also has a cutout mark at one end of each IC to indicate orientation.
MC
U51 and U47
CP
U4
Warning
Use an IC inserter to remove and replace the PROMs. If one is not available, use the small flat blade
screwdriver. Insert the screwdriver
precisely
as shown in Detail B below; twist slightly and gently lift
up the PROM. Inserting the screwdriver incorrectly will damage surrounding components and affect
operation of the Micro Lynx.
