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Reflex Lexicon Service Manual

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Reflex Lexicon Specifications

General IconGeneral
BrandReflex
ModelLexicon
CategoryRecording Equipment
LanguageEnglish

Summary

Performance Verification

Reflex Block Diagram

A visual representation of the Reflex unit's internal circuitry and signal flow.

Listening Tests

Procedures for auditory checks including setup, smooth pots, quick listen, shock test, and headroom LED.

Diagnostics Overview

Explains Power Up and User Diagnostics, and how to interpret results.

Diagnostics Menu and Error Reporting

Lists diagnostic tests, their IDs, and how errors are reported.

Disassembly and Reassembly Procedures

Step-by-step instructions for disassembling and reassembling the unit.

Troubleshooting Tree

A flowchart to guide troubleshooting based on observed symptoms.

Power Up Diagnostics

Automatic diagnostic tests performed when the unit is powered on.

User Diagnostics Access

How to access and navigate the menu for user-invoked diagnostic tests.

Theory of Operation

Analog and Converter Circuitry

Explanation of the input stage, SAH, and DAC circuitry.

Z80 Processor and Memory Map Details

Details the Z80 processor, ROM, SRAM, and memory map organization.

NMI/ Circuitry

Explains the NMI circuit and its behavior on power up.

MIDI I/O Interface and Protocol

Explains the MIDI interface, connectors, and UART communication protocol.

Lexichip II, DRAM, and Clocking

Details the Lexichip II's role in effects processing, DRAM, and clock generation.

Power Supply System Details

Describes the unit's power supply, including AC input, regulated DC outputs, and voltage regulation.

System Processor and Interrupts

Covers Z80 processor, memory map, and interrupt timer functionality.

DAC/ADC Control Logic

Explains control logic for DAC/ADC, including sample/hold and conversion process.

Parts List

Main Board Components

Lists components for the main board, including potentiometers, resistors, capacitors, diodes, and ferrite beads.

Schematics

Schematic Diagrams List

Lists available schematic diagrams for the unit, including main board and chassis assemblies.