ROLAND MC 808

Page 1

Mar.2006

MC-808

ME-BDB

TABLE OF CONTENTS

SERVICE NOTES
Issued by RJA

CAUTIONARY NOTES ,,,,,
SPECIFICATIONS ...............
LOCATION OF CONTROLS 1 .
LOCATION OF CONTROLS PAR
LOCATION OF CONTROLS 2 .......................
LOCATION OF CONTROLS PARTS LIST 2
EXPLODED VIEW 1 ..........................
EXPLODED VIEW PARTS LIST 1
EXPLODED VIEW 2 ......................
EXPLODED VIEW PARTS LIST 2
EXPLODED VIEW 3 ..........................
EXPLODED VIEW PARTS LIST 3
EXPLODED VIEW 4 ..........................
EXPLODED VIEW PARTS LIST 4
WIRING DIAGRAM...
PARTS LIST ..................
CHECKING THE VERSION NUMBER.
FACTORY RESET INSTRUCTIONS
Saving and loading data ,,,,,
Updating the system ...........

Test mode .....................
BLOCK DIAGRAM .....
CIRCUIT BOARD (MAIN)
CIRCUIT BOARD (MAIN)
CIRCUIT DIAGRAM (MAIN 1/3) ,
CIRCUIT DIAGRAM (MAIN 2/3) .....
CIRCUIT DIAGRAM (MAIN 3/3) ,
CIRCUIT BOARD (PANEL)
CIRCUIT BOARD (PANEL)
CIRCUIT DIAGRAM (PANEL 1/3)
CIRCUIT DIAGRAM (PANEL 2/3)
CIRCUIT DIAGRAM (PANEL 3/3)
CIRCUIT DIAGRAM (FADER 1/1)
CIRCUIT BOARD (IACK) .....
CIRCUIT BOARD (IACK) .....
CIRCUIT DIAGRAM (PS 1/1) .
CIRCUIT DIAGRAM (D-BEAM 1/1) .....
CIRCUIT DIAGRAM (JACK 1/1)...

Error messages ...................................

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CURRENT

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sEOuENcER

Copyright © 2006 ROLAND CORPORATION

All rights reserved. No part of this publication may be reproduced in any form without the written permission

of ROLAND CORPORATION.

Roland

17058394E0

Printed in Japan (400) (AS-KW)

Page 2

Mar.2006

MC-808

CAUTIONARY NOTES

SPECIFICATIONS

Before beginning the procedure, please read
through this document.

The matters described may differ according to the
model.

BACK UP USER DATA!

User data may be lost during the course of the procedure.
Refer to USERS DATA SAVE AND LOAD in the Service Notes and save the
data.

After completing the procedure, restore the backed-up data to the product.

PART REPLACEMENT

When replacing components near the power-supply circuit or
a heat-generating circuit (such as a circuit provided with

a heat sink or including a cement resistor),

carry out the procedure according to the instructions with
respect to the part number, direction, and

attachment position (mounting so as to leave an

air gap between the component and the circuit board, etc.).

PARTS LIST

A component whose part code is

cannot be supplied as a
service part because one of the following reasons applies.
- Because it is supplied as an assembled part (under a ditterent part code).
- Because a number ot circuit boards are grouped together and supplied as
a single circuit board (under a different part code).
- Because supply is prohibited due to copyright restrictions.
0 Because reissuance is restricted.

- Because the part is made to order (at current market price).

CIRCUIT DIAGRAM

In the circuit diagram, NIU is an abbreviation for N OT IN USE.
The circuit board and circuit-board diagram show silkscreened indications,

but no components are mounted.

MC-808(08965): Sampling Groovebox

Sound Generator Section

Maximum Poliphony: 128 voices (shared with sampling section)
Sampling Frequency: 44.1 kHz

Parts: 16 (Main) + 16 (RPS)

Waves: 622

Patches
User: 1024 (pre-load: 8%)
Card: 1:124

Rhythm Sets

User: 256 (preload: 128)
Card: 256

Sampling Section

Data Format: 16-bit linear (File Type: WAV/AIFF)
Maximum Poliphony: shared with sound generator section
Sampling Frequency: 44.1 kHz (fixed)
Maximum sampling Time
When sampling memory isnt expanded (4MB)
mono: 47 sec. approx, stereo: 23.5 sec. approx.
When sampling memory is expanded with DIMM (516 MB)
mono: 102 nun. approx, stereo: 51 min. approx.
Samples
User: 2000
Card: 7000

Sequencer Section

Parts: 15 + Tempo/Mute Control

Resolution: 480 ticks per quarter note

Tempo: 5--300

Maximum Note Storage: approx. 1,300,000 notes
Recordable Number ot Measures; 1--998

Patterns
User: 800
Card: 800
Recording Method
Realtime
TR-REC
Step
Songs: 50

Arpeggio Styles: 128
Chord Memory: 128
RPS Sets; 50

Pattern Sets: 50

Effects Section

Reverb: 1 (4 types)
Compressor: 1 (1 type)

Multi-effects: (MFX) 2 / (er1,2: 47 types)
Pitch Shifter (tor external input): 1 (1 type)

Mastering Section

3-band Compressor; 1 (1 type)

Expansion Slot

Expansion ot sampling memory: DIMM 1 slot
Number ot pins: 168-pin

Speed: 100 MHz (PCtUO CL=2) / 133 MHz (PC133 CL=3)
Voltage: 3.3 v

Capacity: 128 MB, 256 MB, 512 MB

Board height: 38 mm or less