Lexicon MPX 100 Technical manual

MPX 100 Update Installation Instructions
THESE SERVICE INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. DO NOT
PERFORMANYSERVICINGOTHERTHANTHATCONTAINEDINTHESEINSTRUCTIONSUNLESSYOU
ARE QUALIFIED TO DO SO. REFER TO SAFETY SUMMARY PRIOR TO PERFORMING ANY SERVICE.
WARNING

SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service and
repair of this instrument. Failure to comply with these precautions, or with specific warnings elsewhere
intheseinstructionsviolatessafetystandardsofdesignmanufactureandintendeduseoftheinstrument.
Lexicon assumes no liability for the customer's failure to comply with these requirements.
SAFETY SYMBOLS
General definitions of safety symbols used on equipment or
in manuals.
Instruction manual symbol: the product
willbemarkedwith this symbol when it is
necessary for the user to refer to the
instruction manual in order to protect
against damage to the instrument.
The CAUTION sign denotes a hazard. It
callsattentiontoanoperatingprocedure,
practice,conditionorthelikewhich,ifnot
correctly performed or adhered to, could
result in damage toor destruction of part
or all of the product.
The NOTE sign denotes important infor-
mation. It calls attention to procedure,
practice, condition or the like which is
essential to highlight.
DO NOT OPERATE IN AN EXPLOSIVE
ATMOSPHERE
Do not operate the instrument in the presence of flammable
gases or fumes. Operation of any electrical instrument in
such an environment constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers.
Component replacement and internal adjustments must be
made by qualified maintenance personnel. Do not replace
components with power cable connected. Under certain
conditions, dangerous voltages may exist even with the
power cable removed. To avoid injuries, always disconnect
power and discharge circuits before touching them.
DO NOT SUBSTITUTE PARTS OR MODIFY
INSTRUMENT
Because of the danger of introducing additional hazards, do
not install substitute parts or perform any unauthorized
modification to the instrument. NOTE:
CAUTION
Electrostatic Discharge (ESD) Precautions
The following practices minimize possible damage to
ICs resulting from electrostatic discharge or improper
insertion.
• Keep parts in original containers until ready for use.
• Avoid having plastic, vinyl or styrofoam in the work
area.
•. Wear an anti-static wrist-strap.
• Discharge personal static before handling devices.
• Remove and insert boards with care.
• Whenremovingboards,handleonlybynon-conduc-
tivesurfacesandnevertouchopen-edgeconnectors
except at a static-free workstation.*
• Minimize handling of ICs.
•. Handle each IC by its body.
• Do not slide ICs or boards over any surface.
• Insert ICs with the proper orientation, and watch for
bent pins on ICs.
• Useanti-staticcontainersforhandlingandtransport.
*Tomakeaplastic-laminatedworkbench anti-static, wash with
a solution of liquid detergent, and allow to dry without rinsing.
CAUTION

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.
TURN OFF AND DISCONNECT ALL POWER
TO THE MPX 100 PRIOR TO INSTALLING
UPGRADE SOFTWARE.
Performing the ROM upgrade is an easy process, but to
avoid problems, please follow these instructions carefully.
Payparticular attention to the precautionslistedinthesafety
summary andthosewhich appearthroughout these instruc-
tions. Any damage caused during installation is not covered
under warranty.
Open the MPX 100
Before opening the MPX 100, put on your anti-static
wriststrap.
UsingtheTORXscrewdriver,removesix(6)screwsfromthe
top and bottom of the unit .
CAUTION
Checkthe ROMprovided with yourupgrade kit.Becausethe
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 toalign the IC correctly, and toavoid bending any
pins.WhentheROMisinserted, carefullyinspect eachpinto
be sure that it has not been bent.
Install the IC
Referring to the illustration below, locate ROM (U10) on the
undersideof the printed circuitboardandremoveitusingthe
ROM Extractor Tool.
Onthe rear panel, remove thefive (5) 1/4"black plasticnuts
andthe two(2) small Phillips headscrews attheMIDIjacks.
Notch
Pin 1
CAUTION
ICs inserted backwards will be destroyed.
Incorrect insertion of ICs is also likely to
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.
Remove the rack ears, then carefully flex the housing to
separate it from the unit and lift it off.
Continued
CAUTION

Lexicon Part No. 070-12976
3 Oak Park
Bedford MA 01730-1441
Tel: [phone]
Fax: [phone]
Customer Service Fax: [phone]/e-mail: [email protected]
Reinitialize Unit
1. Pressandholddownthe frontpanelBypassbuttonwhile
powering up the unit.
2. Continue to hold down Bypass for 10 seconds.
3. Release Bypass and turn the front panel VARIATION
knob to 15.
4. Press Store.
The MPX 100 will initiate its normal power cycle routine
(which takes approximately 6 seconds). Once this routine is
completed, the unit is ready to use with the new software.