Lexicon MPX 100 Manuel technique

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: 781-280-0300

Fax: 781-280-0490

Customer Service Fax: 781-280-0499/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.

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