Table Of Contents - Lexicon MPX 500 Service Manual

24-bit dual channel processor

User manual (58 pages)

Release note (2 pages)

Midi implementation manual (58 pages)

Table of Contents

Chapter 1 Reference Documents, Required Equipment............................. 1-1

Reference Documents............................................................................................................................. 1-1

Required Equipment................................................................................................................................ 1-1

Tools .................................................................................................................................................... 1-1

Test Equipment.................................................................................................................................... 1-1

Chapter 2 General Information ................................................................... 2-1

Periodic Maintenance .............................................................................................................................. 2-1

Ordering Parts ......................................................................................................................................... 2-1

Returning Units to Lexicon for Service .................................................................................................... 2-1

Chapter 3 Specifications............................................................................. 3-1

Chapter 4 Performance Verification............................................................ 4-1

Diagnostics: ............................................................................................................................................. 4-1

Setup: ...................................................................................................................................................... 4-1

I/O Tests: ................................................................................................................................................. 4-1

Analog In To Analog Out Level Test: ................................................................................................... 4-1

Frequency Response Test: ..................................................................................................................... 4-1

Analog In To Analog Out Frequency Test:........................................................................................... 4-1

THD+N Test: ........................................................................................................................................... 4-2

Analog In To Analog Out THD+N Test:................................................................................................ 4-2

Crosstalk Tests:....................................................................................................................................... 4-2

Analog In To Analog Out Crosstalk Test:............................................................................................. 4-2

Dynamic Range Tests: ............................................................................................................................ 4-2

Analog In To Analog Out Dynamic Range Test: .................................................................................. 4-2

Digital I/O Functionality............................................................................................................................ 4-2

MIDI Functionality:................................................................................................................................... 4-3

Footswitch Functionality: ......................................................................................................................... 4-3

Listening Test: ......................................................................................................................................... 4-4

Setup.................................................................................................................................................... 4-4

Verify Clean Audio ............................................................................................................................... 4-4

Shock Test ........................................................................................................................................... 4-4

Lexicon Audio Precision ATE Summary .............................................................................................. 4-5

Chapter 5 Troubleshooting ......................................................................... 5-1

Check the Lexicon web site for the latest software and information:................................................ 5-1

Diagnostics .............................................................................................................................................. 5-1

Power Up Diagnostics.......................................................................................................................... 5-1

Error Indication..................................................................................................................................... 5-1

Test Descriptions ................................................................................................................................. 5-2

#1 ROM Test : .................................................................................................................................. 5-2

#2 SRAM Test: ................................................................................................................................. 5-2

#3 WCS Test: ................................................................................................................................... 5-2

#4 INT Test:...................................................................................................................................... 5-2

#5 ADF Test: .................................................................................................................................... 5-2

#6 EEPROM Test:............................................................................................................................ 5-2

Extended Diagnostics .......................................................................................................................... 5-3

#1 ROM Test : .................................................................................................................................. 5-4

#2 SRAM Test: ................................................................................................................................. 5-4

#3 WCS Test: ................................................................................................................................... 5-5

#4 INT Test:...................................................................................................................................... 5-5

#5 ADF Test: .................................................................................................................................... 5-5

#6 EEPROM Test:............................................................................................................................ 5-5

#7 DRAM Test:................................................................................................................................. 5-5

#8 Switch Test:................................................................................................................................. 5-5

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