Lexicon MPX 500 V2 - UPGRADE Manuale utente

Installation Instructions & Release Notes

MPX 500 Version 2 Software Upgrade

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page i

This document should not be construed as a commitment on the part of Lexicon, Inc.

The information it contains is subject to change without notice. Lexicon, Inc. assumes no

responsibility for errors that may appear within this publication.

A Harman International Company

Lexicon, Inc.

3 Oak Park

Bedford, MA 01730-1441

USA

Tel 781-280-0300

Fax 781-280-0490

www.lexicon.com

Customer Support

Tel 781-280-0300

Fax 781-280-0495 (Sales)

Fax 781-280-0499 (Service)

03/01 | Lexicon Part No. 070-14696

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page ii

MPX 500 Version 2 Software Installation Intructions

THESE SERVICE INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY.

DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THESE

INSTRUCTIONS UNLESS QUALIFIED TO DO SO. REFER TO SAFETY

SUMMARY PRIOR TO PERFORMING ANY SERVICE.

MPX 500 Version 2 Software Upgrade

Software Installation Instructions

Note:

Installation of the MPX 500 Version 2 Software Upgrade will reset the system configuration

to factory-default settings.

To preserve System Parameter settings and User Bank programs,

perform the following steps:

1. Dump the System Parameters or User Bank into an external MIDI device before installing

the upgrade. (These are two separate dumps.)

2. Install the Version 2 software upgrade.

3. Send the previously saved System Parameter or User Bank dump back to the MPX 500.

WARNING

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page iii

WARNING

Dangerous voltages capable of causing death are

present in this instrument. Use extreme caution

when handling, testing, and adjusting.

MPX 500 Version 2 Software Installation Intructions Lexicon, Inc.

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 in

these instructions violates safety standards of design manufacture and intended use of the instrument.

Lexicon, Inc. assumes no liability for failure to comply with these requirements.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cabinet must be

connected to an electrical ground. The instrument is equipped with a

3-conductor AC power cable. The power cable must be either plugged

into an approved 3-contact electrical outlet or used with a 3-contact to

2-contact adapter with the grounding wire (green) firmly connected to an

electrical ground (safety ground) at the power outlet. The power jack and

mating plug of the power cable meet International Electrotechnical

Commission (IEC) safety standards.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of flammable gasses 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 SERVICE OR ADJUST ALONE

Do not attempt internal service or adjustment unless another person

capable of rendering first aid and resuscitation is present.

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.

DANGEROUS PROCEDURE WARNINGS

Warnings such as the example below precede potentially

dangerous procedures throughout this manual. Instructions contained in

the warnings must be followed.

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page iv

Denotes important information. It calls

attention to a procedure, practice,

condition, or the like which is essential to

highlight.

SAFETY SYMBOLS

Following are general definitions of safety symbols used

on equipment or in manuals:

Instruction manual symbol: the product

will be marked with this symbol when it is

necessary for the user to refer to the

instruction manual in order to protect

against damage to the instrument.

Indicates dangerous voltage. (Terminals

fed from the interior by voltage

exceeding 1000V must be so marked.)

Denotes a hazard. It calls attention to a

procedure, practice, condition, or the

like which, if not correctly performed or

adhered to, could result in injury or

death to personnel.

Denotes a hazard. It calls attention to an

operating procedure, practice,

condition, or the like which, if not

correctly performed or adhered to,

could result in damage to or destruction

of part or all of the product.

MPX 500 Version 2 Software Installation Intructions

WARNING

CAUTION

Note:

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

The following practices minimize possible damage to EPROMs 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.

• When removing boards, handle only by non-conductive surfaces

and never touch open-edge connectors except at a static-free

workstation.*

• Minimize handling of EPROMs.

• Handle each EPROM by its body.

• Do not slide EPROMs or boards over any surface.

• Insert EPROMs with the proper orientation, and watch for bent pins on

EPROMs.

• Use anti-static containers for handling and transport.

* To make a plastic-laminated workbench anti-static, wash with a

solution of Lux liquid detergent, and allow to dry without rinsing.

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page v

Note:

Installation of the MPX 500 Version 2 Software

Upgrade will reset the system configuration to

factory-default settings.

To preserve System

Parameter settings and User Bank programs,

perform the following steps:

1. Dump the System Parameters or User Bank

into an external MIDI device before installing

the upgrade. (These are two separate

dumps.)

2. Install the Version 2 software upgrade.

3. Send the previously saved System Parameter

or User Bank dump back to the MPX 500.

Contents

This update kit includes:

• 1 MPX 500 EPROM

• 1 EPROM Extractor Tool

• Installation and Release Notes (this document)

• 1 Anti-static wrist strap

This kit does not include two Phillips head screwdrivers

(sizes 0 and 1) and a wrench or nut driver, which are also

needed.

Instructions

Performing this 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 that appear throughout these

instructions. Any damage caused during installation is not

covered under warranty.

STEP 1 - OPEN THE UNIT

1. Using a size 1 Phillips head screwdriver, remove

the screws (Lexicon Part No. 640-02812) on the

top and bottom of the unit (three on top, three on

bottom).

MPX 500 Version 2 Software Installation Intructions Lexicon, Inc.

WARNING

TURN OFF AND DISCONNECT ALL POWER TO THE UNIT

PRIOR TO INSTALLING THE SOFTWARE UPGRADE.

Top View of Unit

Front

Back

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page vi

2. Carefully remove the side panels by pulling them

out. Begin pulling at the end closest to the front

panel.

3. Remove the screw (Lexicon Part No. 640-02812)

and nut (Lexicon Part No. 643-01732) closest to

the AC receptacle. This is the only screw with a

nut attached.

4. Remove the nine larger screws (Lexicon Part No.

641-11466) on the back panel.

5. Using a size 0 Phillips head screwdriver, remove

the four smaller screws (Lexicon Part No. 641-

12759) near the MIDI IN & OUT/THRU ports.

MPX 500 Version 2 Software Installation Intructions

Screw & Nut

inside unit 9 Larger Screws

4 Smaller Screws

Bottom View of Unit

Front

Back

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page vii

MPX 500 Version 2 Software Installation Intructions Lexicon, Inc.

6. Using a wrench or nut driver, remove the five

plastic nuts (Lexicon Part No. 643-11682)

attached to the 1/4-in. connectors.

7. Remove the U-shaped chassis cover by gently

pulling it straight back, away from the front panel.

8. Put the anti-static wrist strap on before

proceeding to the next step.

STEP TWO - INSTALL THE EPROM

1. Refer to the illustration below to locate the

EPROM on the MPX 500 main board (location U9).

2. Check the EPROM provided with the upgrade kit.

Because the manufacturing process leaves the

pins angled out slightly from the body of the

EPROM, the pins must be straightened before

insertion. Use the following procedure to

straighten the pins:

A. Place the EPROM on its side on a static-free,

flat surface.

5 Plastic Nuts

Pin 1

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page viii

B. Hold the body of the EPROM and, exerting

gentle pressure downward, roll it slightly to

force the pins into a position parallel to the

work surface (see diagram below).

3. Using the EPROM extractor tool (see diagram

below) remove the EPROM at location U9 and

insert the new EPROM in its place. Be careful to

align the EPROM correctly to avoid bending any

pins. When the EPROM is inserted, carefully

inspect each pin to ensure that it has not been

bent.

Note:

To reassemble the unit, follow instructions 1-7

under the heading “Step 1 - Open the Unit”

(pages 6-8) in reverse order.

MPX 500 Version 2 Software Installation Intructions

CAUTION

EPROMs inserted backwards will

be destroyed. Incorrect insertion

of EPROMs is also likely to cause

damage to the board.

Notch

Pin 1

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page ix

Lexicon, Inc.

MPX 500 Version 2 Software Release Notes

Note:

Installation of the MPX 500 Version 2 Software

Upgrade will reset the system configuration to

factory-default settings.

To preserve System

Parameter settings and User Bank programs,

perform the following steps:

1. Dump the System Parameters or User Bank

into an external MIDI device before installing

the upgrade. (These are two separate

dumps.)

2. Install the Version 2 software upgrade.

3. Send the previously saved System Parameter

or User Bank dump back to the MPX 500.

Using the Documentation

This document contains information specific to the MPX

500 Version 2 Software Upgrade. It does not replace the

MPX 500 User Guide. Rather, these installation instructions

and release notes are designed for use with the guide.

About the Upgrade

This section describes the enhancements contained in the

MPX 500 Version 2 Software Upgrade.

THE COMPRESSOR

The new software contains a compressor that is available

with all presets. It sits in the Wet component of the signal

path in front of the effect(s) for the current preset. It is

controlled with four new parameters: Compression Ratio,

Threshold, Attack Time, and Release Time, which are

available on a new Edit page in each preset.

Available ratio values are: 1:1 (Off), 2:1, 3:1, 4:1, 5:1, and

10:1. Threshold values range from 0dB to -32dB and are

relative to 0dBFS (meaning digital saturation). The

compressor is disabled (turned off) if either the Ratio is set

to 1:1 or the Threshold is set high enough to prevent the

incoming signal from crossing the compression threshold.

Attack and Release Times are approximate indicators of

how quickly the compressor responds, within 3dB of the

final output level dictated by the incoming signal. For

most music material, Release should be about four times

longer than Attack. Both must be long enough to

accommodate the bass content of the music. If the

compressor is set to react faster than the waveform of the

music itself, the resulting changes in output level will

re-shape the waveform enough to generate undesirable

audio effects. For example, 80Hz has a period of 12ms. If

this is a dominant component in the music material, set

both Attack and Release to be at least 12ms, even longer

for better results.

MPX 500 V2 Upgrade Guide 3/15/01 3:05 PM Page x

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