Nortel Networks BayStack 100 Series - Manual (Page 7)

893-00978-A 5
2. Remove the PROM.
a. Use an industry-standard IC extraction tool to firmly clamp the sides
of the PROM.
b. With the extraction tool in place, pull straight up on the PROM until
it disengages from its socket.
3. Install the new PROM.
a. Grasp the sides of the PROM between your thumb and forefinger.
b. Gently place the PROM into the socket at location U2 on the
baseboard, being sure to align the beveled corner of the PROM with
the beveled corner (the notch indicator) on the PROM socket (see
Figure 3 ).
c. Push the PROM straight down until it seats into the socket.
4. Reinstall the DCM onto the mounting posts by gently pushing the DCM
connector into the NMM connector (see
Figure 2 ) so that the DCM lays
flat across the surface of the NMM.
5. Reinstall the screws into the mounting post holes of the DCM.
Caution: Be careful that the extraction tool you use does not bend or put
pressure on the chips adjacent to the PROM socket.
Note: Do not force the PROM out of its socket. If the PROM is difficult to
remove, gently wiggle the PROM back and forth a few times to loosen the
teeth, being careful not to damage the PROM socket. When the PROM is
loosened, pull straight up on the PROM using the IC extraction tool. The
PROM should lift out of its socket without damage to the socket or the
PROM.
Note: Do not force the PROM into its socket. If the PROM is difficult to
install, verify that the teeth of the PROM are straight before inserting the
PROM into the socket. Be careful not to damage the PROM or the socket
while pushing the PROM into place.