Adaptec AHA-1740A Instruction Manual

adaptec
AHA-1740A/1742A
Instructions
for
Installing
EPROMs
Installing the BIOS and Firmware
EPROMs
Proceed with the following steps to install your new
BIOS and firmware EPROMs.
CAUTION
Turn off power to the system and all external de-
vices. Serious damage to your system unit and
options can occur if you leave the power on.
Adaptec recommends that you unplug your system
from the AC outlet.
1. Remove the cover of your EISA personal computer
to expose the expansion slot containing your
AHA-1740A/1742A adapter.
CAUTION
The AHA-1740A or AHA-1742A, like all electronic
equipment, is static sensitive. Discharge the static
electricity from your body by touching an un-
painted metal surface of your computer frame or
rear panel before handling the board.
2. Remove all cables from the host adapter.

3. Remove the screw that is securing the adapter’s
bracket to your EISA system frame and gently lift
the adapter board from the slot with a rocking, up-
ward motion.
4. Using an EPROM extraction tool, remove the BIOS
and firmware EPROMs using a gentle, rocking, up-
ward motion. Note the pin orientation of the
EPROMs and sockets. The BIOS EPROM is lo-
cated in position U47 and the firmware EPROM is
located in position U10.
CAUTION
Be certain you have the proper alignment of the
EPROM and socket before installing a new
EPROM. Damage to the EPROM may occur if it is
incorrectly inserted.
5. Insert the new EPROMs by aligning each EPROM
with it’s corresponding socket and using a gentle,
rocking, downward motion, taking care to avoid
bending the pins.
6. Firmly plug the adapter card back into its expansion
slot and use the screw you previously removed to
secure the adapter’s bracket to your EISA system
frame.
7. Plug in all previously removed cables.
8. Replace the system cover to prevent personal injury
before applying power to the system.
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adaptec •691 south milpitas blvd. •milpitas, california •95035
Stock No.: 510376-00 Rev A GM 1/93
Printed in Singapore