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Boss DR-550 Dr.Rhytm User Manual

Boss DR-550 Dr.Rhytm
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Boss DR-550 Dr.Rhytm Specifications

General IconGeneral
TypeDrum Machine
Polyphony8 voices
DisplayLED
Tempo40-250 BPM
MIDIIn, Out
Power Supply9V DC
ConnectivityMIDI In, MIDI Out

Summary

Exploded View

DR-550 Disassembly Procedure and Precautions

Shield Cover Removal and Installation

Procedure for removing and installing the shield cover.

Main Board (1/2) Removal Precautions

Precautions when removing the main board (1/2).

LCD Installation

Instructions for installing the LCD unit.

Parts List

Block Diagram

Circuit Description

Main Board Replacement

Circuit Diagram <Main Board>

Identifying Version Number

Data Save and Load

Test Mode

Key Check

Tests the functionality of all keys on the device.

LCD Check

Verifies the proper display of all LCD segments.

RAM Check

Confirms the integrity and functionality of the RAM.

Tape Save Check

Verifies that data is correctly saved to tape.

Tape Load Check

Confirms that data can be loaded from tape.

ROM Check

Ensures that the Read-Only Memory is correctly readable.

Troubleshooting

IC Data

Change Information

Appendix: Error Messages

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