Lexicon MPX 100 - UPDATE Update Installation Instructions page 3

MPX 100 ROM Upgrade
The update kit includes:
1 MPX 100 ROM (U10)
1 IC Extractor Tool (for ROM)
1 Update Installation Instructions (this document)
You will also need a TORX™ T-9 screwdriver, a small
Phillips head screwdriver and an anti-static wriststrap.
Performing the ROM upgrade is an easy process, but to
avoid problems, please follow these instructions carefully.
Pay particular attention to the precautions listed in the safety
summary and those which appear throughout these instruc-
tions. Any damage caused during installation is not covered
under warranty.
TURN OFF AND DISCONNECT ALL POWER
TO THE MPX 100 PRIOR TO INSTALLING
UPGRADE SOFTWARE.
Open the MPX 100
Before opening the MPX 100, put on your anti-static
wriststrap.
Using the TORX screwdriver, remove six (6) screws from the
top and bottom of the unit .
On the rear panel, remove the five (5) 1/4" black plastic nuts
and the two (2) small Phillips head screws at the MIDI jacks.
Remove the rack ears, then carefully flex the housing to
separate it from the unit and lift it off.
CAUTION
Install the IC
Referring to the illustration below, locate ROM (U10) on the
underside of the printed circuit board and remove it using the
ROM Extractor Tool.
CAUTION
Check the ROM provided with your upgrade kit. Because the
manufacturing process leaves the pins angled out slightly
from the body of the ROM, the pins must be straightened
before insertion with the following procedure:
1. Place the ROM on its side on a static free surface.
2. Hold the body of the ROM and, exerting gentle pressure
downward, roll it slightly to force the pins into position
parallel to your work surface.
Be careful to align the IC correctly, and to avoid bending any
pins. When the ROM is inserted, carefully inspect each pin to
be sure that it has not been bent.
CAUTION
Notch
ICs inserted backwards will be destroyed.
Incorrect insertion of ICs is also likely to
Pin 1
cause damage to the board.
Replace Cover
Reposition the cover and replace the rear panel screws and
nuts. Replace the rack ears and the screws on the top and
bottom of the housing. Be careful not to overtighten the
screws.
Continued