Owner`s manual

166
B.2 V50/V73/V74/V75/V76/V86/V87 EPROM UPGRADE
You will receive one EPROM (chip with label) for each
module to be upgraded. The materials you will need to
supply are:
Phillips-head screwdriver
IC DIP extractor or a pair of curved needle-nose
pliers
1. IMPORTANT: Remove power from the unit by
depressing the power switch on the front of the
unit to OFF. Also remove power cord from the AC
outlet.
2. Remove the appropriate module by loosening the
2 straight slot screws that attach the connector
board I/O module to the chassis and then pulling
the module out.
3. Refer to the high speed module mechanical layout
(see Appendix D.2) and locate socket U3. Remove
existing EPROM from the appropriate socket with
IC extractor or needle-nose pliers. Gradually
loosen each side of the chip, alternating pliers
from side to side, so as not to bend chip pins. Pull
loosened EPROM all the way out.
4. Install new EPROM into the appropriate socket.
(Make certain you are installing the correct EPROM
into the correct module by referring to the label on
the EPROM). The EPROM is notched; the notch on
the EPROM should line up with the notch on the
socket. When installing the new chips, be careful
not to bend any of the pins.
5. Re-install the module(s) and apply power to the
unit. The upgrade is now complete.
Before you begin operations, check the configuration