Reflex Lexicon - Page 2

Reflex
Service
Manual
Table of Contents
1.
Reflex Controls and Connectors
Front Panel
1-1
Storing and
Clearing
Registers
Rear Panel
1-2
Footswitches
•
MIDI
OUT/THRU
Jumper
Setting Audio Levels
1-3
Periodic Maintenance
1-3
Ordering
parts
1-3
Returning
units
for service
1-4
2.
Specifications
3. Performance Verification
Block Diagram
3-1
Required Equipment
3-1
Initial Inspection
3-2
Functional Tests
3-3
Listening
Tests
3-5
Diagnostics
3-6
Power
Up
Diagnostics
•
User Diagnostics
Audio
Performance
3-14
Disassembly/Reassembly
3-17
Troubleshooting Tree
3-18
4. Theory
of Operation
Analog
and
Converter
Circuitry
4-1
SAH
•
DAC
•
Deglitch
(Output Hold)
•
Output Circuitry
Reset, System Processor, Memory Mapping,
Interrupt
Timer
•
Power
Fail/Reset
Z80, ROM, RAM, Memory
Map
4-4
NMI/
Circuit (Interrupt Timer
4-5
NMI Behavior
on
Power
Up
•
INT/CKT
(MIDI IN)
Front Panel, Fotswitches, MIDI
I/O,
EEPROM
4-6
I/O Registers
•
O/P Registers
•
EEPROM
64kbits
(8k X
8),
24C65
Interface
•
Software
Requirements
A
note on
the
electrical interface
for
the EEPROM
data
I/O
•
I/P
Registers
•
MIDI
I/O
Lexichip II,
DRAM,
Clocks
4-10
DAC/ADC
Control Logic
and Data
Port
Power
Supply
4-11
5.
Parts List
6. Schematics
and Assembly
Drawings