Roland MC-808 Service Notes
Mar.2006
TABLE OF CONTENTS
CAUTIONARY NOTES ...................................................2
SPECIFICATIONS.............................................................2
LOCATION OF CONTROLS 1 .......................................4
LOCATION OF CONTROLS PARTS LIST 1 ................5
LOCATION OF CONTROLS 2 .......................................6
LOCATION OF CONTROLS PARTS LIST 2 ................7
EXPLODED VIEW 1 .........................................................8
EXPLODED VIEW PARTS LIST 1 .................................. 9
EXPLODED VIEW 2 .......................................................10
EXPLODED VIEW PARTS LIST 2 ................................ 11
EXPLODED VIEW 3 .......................................................12
EXPLODED VIEW PARTS LIST 3 ................................ 13
EXPLODED VIEW 4 .......................................................14
EXPLODED VIEW PARTS LIST 4 ................................ 15
WIRING DIAGRAM.......................................................16
PARTS LIST......................................................................18
CHECKING THE VERSION NUMBER.......................23
FACTORY RESET INSTRUCTIONS ............................23
Saving and loading data.................................................24
Updating the system.......................................................25
MC-808
SERVICE NOTES
Issued by RJA
Test mode .........................................................................26
BLOCK DIAGRAM.........................................................30
CIRCUIT BOARD (MAIN) ............................................32
CIRCUIT BOARD (MAIN) ............................................34
CIRCUIT DIAGRAM (MAIN 1/3) ...............................36
CIRCUIT DIAGRAM (MAIN 2/3) ...............................38
CIRCUIT DIAGRAM (MAIN 3/3) ...............................40
CIRCUIT BOARD (PANEL) ..........................................42
CIRCUIT BOARD (PANEL) ..........................................44
CIRCUIT DIAGRAM (PANEL 1/3) .............................46
CIRCUIT DIAGRAM (PANEL 2/3) .............................48
CIRCUIT DIAGRAM (PANEL 3/3) .............................50
CIRCUIT DIAGRAM (FADER 1/1) .............................52
CIRCUIT BOARD (JACK)..............................................54
CIRCUIT BOARD (JACK)..............................................55
CIRCUIT DIAGRAM (PS 1/1) ......................................56
CIRCUIT DIAGRAM (D-BEAM 1/1)...........................58
CIRCUIT DIAGRAM (JACK 1/1).................................60
Error messages.................................................................62
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.
Printed in Japan (400) (AS-KW)17058394E0
Mar.2006 MC-808
CAUTIONARY NOTES
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 different part code).
• Because a number of 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.
• 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 ‘NOT IN USE’.
The circuit board and circuit-board diagram show silkscreened indications,
but no components are mounted.
SPECIFICATIONS
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: 896)
Card: 1024
Rhythm Sets
User: 256 (pre-load: 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 isn’t expanded (4MB)
mono: 47 sec. approx., stereo: 23.5 sec. approx.
When sampling memory is expanded with DIMM (516 MB)
mono: 102 min. approx., stereo: 51 min. approx.
Samples
User: 2000
Card: 7000
Sequencer Section
Parts: 16 + Tempo/Mute Control
Resolution: 480 ticks per quarter note
Tempo: 5--300
Maximum Note Storage: approx. 1,300,000 notes
Recordable Number of 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
2
Effects Section
Reverb: 1 (4 types)
Compressor: 1 (1 type)
Multi-effects: (MFX) 2 / (MFX1, 2: 47 types)
Pitch Shifter (for external input): 1 (1 type)
Mastering Section
3-band Compressor: 1 (1 type)
Expansion Slot
Expansion of sampling memory: DIMM 1 slot
Number of pins: 168-pin
Speed: 100 MHz (PC100 CL=2) / 133 MHz (PC133 CL=3)
Voltage: 3.3 V
Capacity: 128 MB, 256 MB, 512 MB
Board height: 38 mm or less
Mar.2006 MC-808
External Memory
For saving Patterns/Patches/Samples
CompactFlash: 1 slot, Max. 1 GB (3.3 V)
Controllers, Display
Display
20x2 character Type LCD (with Back lit.)
Pattern Number Display: 7 segment 3 character x 2 (LED)
BPM Diplay: 7 segment 4 character (LED)
Control Knobs
OUTPUT Volume: 1
INPUT Volume: 1
Control Sliders
Motorized Fader (60mm): 8
Other Controller
D Beam Controller
Connectors
MIX OUTPUT Jacks (L/MONO, R)
DIRECT OUTPUT Jacks (L, R)
INPUT Jacks (L/MONO/MIC, R)
Headphones Jack
MIDI Connectors (IN, OUT)
USB Connector (Function): MIDI, Mass storage class
DC IN Jack
Power Supply
DC 12 V (AC adaptor)
Current Draw
1500 mA
Dimensions
431 (W) x 327 (D) x 104 (H) mm
17 (W) x 12-7/8 (D) x 4-1/8 (H) inches
Weight
3.4 kg
7 lbs 8 oz
Accessories
Owner’s Manual (English) (#73126945)
Sound & Parameter List (English) (Included in Owner’s Manual)
AC Adaptor (PSB-7U, without Power Code) (#04236112)
CD-ROM (Editor, USB MIDI Driver) (#04236423)
Power Code (120V) (#02562456)
Power Code (230V) (#01903356)
Power Code (240V) (#03785590)
EURO CONVERTER PLUG (#00905234)
(0 dBu = 0.775 V rms)
* In the interest of product improvement, the specifications and/or appearance of
this unit are subject to change without prior notice.
3
Mar.2006 MC-808
LOCATION OF CONTROLS 1
[TOP PANEL]
10
23
24
a
2
7
9
a
1
8
6 5
a
3 4
17 13 11 14
a
12
15
16
19
20
18
21
22
25
a
a a
282726
4
Mar.2006 MC-808
LOCATION OF CONTROLS PARTS LIST 1
[TOP PANEL]
[PARTS].
No
PART CODE PART NAME DESCRIPTION Q’TY
1 04125512 TOP CASE 1
2 04125545 TOP PANEL 1
3 01900612 TPS611(F) DIODE 1
12169368 LED SPACER LDS-40B 1
4 03126134 TLN233(F) LED(INFRARED) 1
02230578 LED SPACER LDS-50R 1
5 03120889 D S-KEYTOP SX2H-B GRS 1
03120890 D S-KEYTOP SX1H-B GRS 1
01343478 TACT SWITCH SKQNAED010 3
01904112 SLR-342VCT32 N.P.Q RANK LED(RED) 3
6 03120889 D S-KEYTOP SX2H-B GRS 4
01343478 TACT SWITCH SKQNAED010 8
01904112 SLR-342VCT32 N.P.Q RANK LED(RED) 8
7 04124267 J R-KNOB SF-ELA BLK/SLV 2
03568189 RK12L12C0A0E ROTARY POTENTIOMETER 2
8 04126145 LENS COVER 1
04125567 LED LENS 4
03893601 SLR343BCT3F LED (BLUE) 8
03014945 LED SPACER LH-3-8 8
9 04125623 RUBBER SW C 1
01343478 TACT SWITCH SKQNAED010 4
10 04126167 U S-KNOB M-A 8
04017245 RS60N11M SLIDE POTENTIOMETER 8
11 04126156 PLATE 1
12 04125556 DISPLAY COVER 1
13 03567134 LCD RCM2234M-A 1
02453345 LCD HOLDER 1
02453156 LNJ801TP6JA LED 5
14 01342534 LED 7 SEGMENT SL-9351S 2
15 15029419 LED (7SEGMENT) LA-301VB 4
16 03120889 D S-KEYTOP SX2H-B GRS 2
03120890 D S-KEYTOP SX1H-B GRS 1
01343478 TACT SWITCH SKQNAED010 5
01904112 SLR-342VCT32 N.P.Q RANK LED(RED) 5
17 03014223 RUBBER SW B 1
18 03459534 TLSU1002A(TO2) LED(RED) 1
03565401 TLGU1002A(T02) LED(GREEN) 1
03459534 TLSU1002A(TO2) LED(RED) 1
19 22485303 D R-KNOB(ALPHA-DIAL) L BLK 248-303 1
01905467 EVE GC1 F20 24B ROTARY ENCODER 1
20 03120890 D S-KEYTOP SX1H-B GRS 3
03120889 D S-KEYTOP SX2H-B GRS 3
01343478 TACT SWITCH SKQNAED010 9
01904112 SLR-342VCT32 N.P.Q RANK LED(RED) 1
21 03120890 D S-KEYTOP SX1H-B GRS 1
01343478 TACT SWITCH SKQNAED010 1
01904112 SLR-342VCT32 N.P.Q RANK LED(RED) 1
22 03120890 D S-KEYTOP SX1H-B GRS 16
01343478 TACT SWITCH SKQNAED010 16
15029348 SLR-342MCT32 LED (GREEN) 16
23 03120890 D S-KEYTOP SX1H-B GRS 8
01343478 TACT SWITCH SKQNAED010 8
01904112 SLR-342VCT32 N.P.Q RANK LED(RED) 8
24 03120890 D S-KEYTOP SX1H-B GRS 1
01343478 TACT SWITCH SKQNAED010 1
25 03120889 D S-KEYTOP SX2H-B GRS 2
01343478 TACT SWITCH SKQNAED010 4
01904112 SLR-342VCT32 N.P.Q RANK LED(RED) 4
26 00785856 SLR-342VR3F LED(RED) 4
12169406 LED SPACER LDS-100Y 10MM 4
27 04125601 RUBBER SW A 1
03459534 TLSU1002A(TO2) LED(RED) 8
28 04125612 RUBBER SW B 1
03459534 TLSU1002A(TO2) LED(RED) 9
[SCREW]
No. PART CODE PART NAME DESCRIPTION Q’TY
a 02126156 SCREW M3X10 HEX SOCKET HEAD CAP TAPTITE P 8
5
Mar.2006 MC-808
LOCATION OF CONTROLS 2
[REAR PANEL]
MC808_rear.eps
29 30 32
bc
31 34
33
b
d
6
Mar.2006 MC-808
LOCATION OF CONTROLS PARTS LIST 2
[REAR PANEL]
[PARTS]
No.
PART CODE PART NAME DESCRIPTION Q’TY
29 12499175 BUTTON JSPUE0011A 1
01676512 PUSH SWITCH SDKLA10200 1
30 03018789 DC JACK HEC2305-01-260 1
31 22365714 CORD HOOK 1
32 13429825 MIDI CONNECTOR YKF51-5054V 1
33 02781189 USB CONNECTOR B TYPE FEMALE YKF45-0021 1
34 00120434 6.5MM JACK YKB21-5262 7
[SCREW]
No. PART CODE PART NAME DESCRIPTION Q’TY
b 40237101 SCREW M3X8 PAN MACHINE W/SW+SMALL PW BZC 5
c 40230590 SCREW M3X10 BINDING MACHINE NI 1
d 40011312 SCREW 3X10 BINDING TAPTITE P BZC 3
7
Mar.2006 MC-808
EXPLODED VIEW 1
fig.bunkai.eps
TOP
2
1
5
3
4
Refer Fig.2
14
15
12
6
7
8
13
16
17
REAR
9
10
11
Refer Fig.1
30
27
19
25
20
21
18
VIEW 1
22
23
24
VIEW 2
26
28
8
BOTTOM
29
Mar.2006 MC-808
EXPLODED VIEW PARTS LIST 1
PART CODE PART NAME DESCRIPTION Q’TY
No
1 04124267 J R-KNOB SF-ELA BLK/SLV 2
2 04126167 U S-KNOB M-A 8
3 04126156 PLATE 1
4 04125545 TOP PANEL 1
5 04126145 LENS COVER 1
6 04125556 DISPLAY COVER 1
7 22485303 D R-KNOB(ALPHA-DIAL) L BLK 248-303 1
8 04125567 LED LENS 4
9 22365714 CORD HOOK 1
10 12499175 BUTTON JSPUE0011A 1
11 04125512 TOP CASE 1
12 04125623 RUBBER SW C 1
13 73126856 D-BEAM KEYTOP ASSY 1
14 04125601 RUBBER SW A 1
15 04125612 RUBBER SW B 1
16 03014223 RUBBER SW B 1
17 73126890 PANEL KEYTOP ASSY Include in PANEL BOARD ASSY 1
18 02890945 CLAMP LWSM-0605 1
19 04125578 PWB HOLDER MAIN 1
20 73126834 JACK BOARD ASSY 1
21 73126845 PS BOARD ASSY 1
22 03239989 PWB SPACER WLS-10-0 1
23 12199579 CARD SPACER KGLS-5RT 1
24 04236978 EMC GASKET RFSG-060100 L=30 1
25 73126801 MAIN BOARD ASSY 1
26 04125523 BOTTOM CASE 1
27 04233334 CF COVER 1
28 04126134 DIMM COVER 1
29 01235378 FOOT 4
30 73126912 FADER BOARD ASSY 1
9
Mar.2006 MC-808
EXPLODED VIEW 2
fig.betu1.eps
Fig.1
31
32
30
Fig.2
34
37
33
38
35
36
17
10
Mar.2006 MC-808
EXPLODED VIEW PARTS LIST 2
[Fig.1]
No
PART CODE PART NAME DESCRIPTION Q’TY
30 73126912 FADER BOARD ASSY 1
31 04125589 FADER HOLDER 1
32 04017245 RS60N11M SLIDE POTENTIOMETER 8
[Fig.2]
No PART CODE PART NAME DESCRIPTION Q’TY
17 73126890 PANEL KEYTOP ASSY 1
33 03120889 D S-KEYTOP SX2H-B GRS 11 +1
34 03120890 D S-KEYTOP SX1H-B GRS 30 +1
35 02453345 LCD HOLDER 1
36 01905467 EVE GC1 F20 24B ROTARY ENCODER 1
37 03568189 RK12L12C0A0E ROTARY POTENTIOMETER 2
38 03567134 LCD RCM2234M-A 1
11
Mar.2006 MC-808
EXPLODED VIEW 3
fig.hei-1.eps
TOP
REAR
BOTTOM
a
c
b
d
d
b
d
12
Mar.2006 MC-808
EXPLODED VIEW PARTS LIST 3
[TOP]
No
PART CODE PART NAME DESCRIPTION Q’TY
a 02126156 SCREW M3X10 HEX SOCKET HEAD CAP TAPTITE P 8
[REAR]
No PART CODE PART NAME DESCRIPTION Q’TY
b 40237101 SCREW M3X8 PAN MACHINE W/SW+SMALL PW BZC 5
c 40230590 SCREW M3X10 BINDING MACHINE NI 1
d 40011323 SCREW 3X10 BINDING TAPTITE P BZC 3
[BOTTOM]
No PART CODE PART NAME DESCRIPTION Q’TY
d 40011323 SCREW 3X10 BINDING TAPTITE P BZC 12
13
Mar.2006 MC-808
EXPLODED VIEW 4
fig.hei-2.eps
VIEW 1
d
d
VIEW 2
d
e
d
14