Roland Boss Dr.Groove DR-202 Operating and maintenance manual

Jul, 1998
DR-202
TABLE OF CONTENTS Page
SPECIFICATIONS•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••1
LOCATION OF CONTROLS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••2
EXPLODED VIEW•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••3
BLOCK DIAGRAM ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••4
PARTS LIST ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••5
IDENTIFYING VERSION NUMBER••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••6~7
TEST MODE ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••6~7
FACTORY PRESET•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••8
DATA SAVE & LOAD••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••8
CIRCUIT DIAGRAM & BORAD••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••9~13
Printed in Japan (ACE0) (CR) 1
17059931
Issued by RJA
Copyright c1998 by ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission of
ROLAND CORPORATION.
SPECIFICATIONS
DR-202 : Dr.Groove
'Maximum Polyphony
24 Voices
'Number of Tones
256
'Number of Patterns
Preset Patterns : 400
User Patterns : 100
'Number of Songs
20 (1 Demo Song)
'Resolution
96 Ticks / Quarter Note
'Tempo
Quarter Note = 40.0 - 250.0
'Display
LCD ( 16 Characters x 2 Lines )
'Data Entry Methods
Real-time recording
Step recording
Step Editing
'Number of Pads
13
'Control Knobs
Value
Volume
Low
Instrument Select
Realtime Modify: Cutoff
Resonance
Decay
Effects: Reverb/Delay
Flanger
'Synchronization
MIDI
'Connectors
Phones Jack ( Stereo miniature phone type )
Line Out Jacks ( L, R )
MIDI Connector ( IN, OUT )
Foot Switch Jack
DC In Jack ( DC9V )
'Power Supply
DC9V: Dry Batteries ( LR6(AA) type ) x6
PSA Adaptor (BOSS PSA-Series: Optional)
'Current Draw
200mA
Expected battery life under continuous use ( These
figures will vary depending on the actual conditions of
use. )
Alkaline : 8 hours
Carbon : 4 hours
'Dimensions
258.00 (W) X 221.20 (D) X 85.26 (H) mm
'Weights
1100g (including batteries)
'Accessories
Owner's Manual ( #71124823 )
Dry Batteries ( LR6(AA)type )x6 ( #********)
'Options
AC Adaptor PSA-Series, Foot Switch FS-5U
In the interest of product improvement, the specifications
and/or appearance of this unit are subject to change
without prior notice.

2
Pin Jack
YKC21-3040
(#00451445)
MIDI Jack
YKF51-5048
(#13429676)
Phone Jack
HLJ7101-01-3010
(#13449283)
Battery Cover
(#01340545)
Side Switch (Power Switch)
HSW-0847-01-010
(#00123134)
Adaptor Jack
HEC2392-01-150
(#13449717)
Top Case
(#01450856)
Bottom Case
BOTTOM CASE ASSY
(#71124789)
Phones Jack
HSJ-0912-01-040
(#13449434)
Foot (x4)
15x15 FOOT
(#01342589)
Pot
RK14K124 10KB
(#01566523)
Pot
RK14K124 100KW
(#01454045)
Pot (x6)
RK11K114 50KB
(#01454067)
Knob (x8)
J R-KNOB SF (BLK/RED)
(#01341267)
Button
RUBBER SW EFFECT
(#01450934)
Knob
D R-KNOB L RED
(#01450912)
Rotary Encoder
EC16B24204
(#01454090)
Display Cover
(#01450889)
LCD
CM1621-OS
(#01451034)
LED (x5)
LTIU67A
(#01342601)
Button
RUBBER SW PAD
(#01450923)
LOCATION OF CONTROLS
DR-202
Jul, 1998

3
EXPLODED VIEW
11
10
b
7
616
9
8
a
5
4
3
2
1
14
15
dc13
12
17
18
DR-202
Jul, 1998
[PARTS]
No. PART No. PART NAME
q01450856 TOP CASE
w01450934 RUBBER SW EFFECT
e01450923 RUBBER SW PAD
r71010823 SW BOARD ASSY
t71010812 MAIN BOARD ASSY
y71124789 BOTTOM CASE ASSY
u01340545 BATTERY COVER
i01450901 BATTERY TERMINAL (-)
o01450890 BATTERY TERMINAL (+)
!0 01562290 BATTERY TERMINAL (+/-)
!1 01342589 15x15 FOOT
!2 01451034 LCD UNIT CM1621-OS
!3 01450889 DISPLAY COVER
!4 01341267 J R-KNOB SF(BLK/RED)
!501450912 D R-KNOB L RED
!6 01562356 SHIELD SHEET
!7 01561489 FUJI CARD(16P) 16x160-A6.0BB-P1.25-HBL10-S
!8 01561490 FUJI CARD(8P) 8x160-A6.0BB-P1.25-HBL10-S
[SCREW]
A40011278 BINDING HEAD TAP TIGHT-P 3x8 ZC
B40011323 BINDING HEAD TAP TIGHT-P 3x10 BZC
C******** M9 WASHER
D******** M9 NUT

1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
4
CPU
IC5
HD6415108RF
ENCODER
SOUND CHIP
IC6
TC6116AF
SRAM
IC2
TC551001CF-70L
PSRAM
IC1
LC33832M-10-TLM
SOUND ROM
IC15
LH537NVP
DAC
IC13
BU9480F
LPF
IC10
uPC4570
RESET IC
IC3
M51953
X'TAL
X1
MA-406 20MHz
VOLUME
VR101
VOLUME
VR103-108
EQ
LOW CUT/BOOST
VR102 IC102
M5216
LITIUM BATTERY
BT1
CR2032
MIDI IN
MIDI OUT Data Bus
Address Bus
CN3
LCD
CM1621-OS
PHOTO COUPLER
PC-400
IC7
FOOT
SWITCH
CN1 CN101
CN202 CN201
SW x35 LED x5
SW BOARD
MAIN BOARD
10MHz
DR-202 Block Diagram
L
RLINE OUT
PHONES
MUTING
CONTROL
SW REGULATOR
IC22
SI-8221L
D+5 A+9
DC IN
9V
BATTERY 9V
LR6(AA)Type x6
POWER SW
SW1
PROGRAM ROM
IC10
LH5S471Y(MASK)
M27C4001-10F1(EPROM)
BLOCK DIAGRAM
DR-202
Jul, 1998

PARTS LIST DIODE
15339412 U1BC44 D4.D5 on MB
15339119T0 1SS352 D2 on MB
15339121 1SS301 DA1 on MB.DA201-DA216 on SB
15339120T0 1SS302 DA2.DA3 on MB
01342601 LT1U67A LED (RED) D233-D237 on SB
RESISTOR
01344723 MCR25 JZH J 220 22 OHM 1/4W R142.R144 on MB
15399965 RCE9A103JAG7A RESISTOR ARRAY RA8 on MB
15399983 RCE9A473JA RESISTOR ARRAY RA9 on MB
# 01126201 EXBV8V332JV RESISTOR ARRAY RA3.RA7 on MB
00126101 EXBV8V221JV RESISTOR ARRAY RA5.RA6 on MB
00126112 EXBV8V101JV RESISTOR ARRAY RA2 on MB
CAPACITOR
# 01564123 10MV220HC CHEMICAL C31 on MB
# 01564145 16MV10HC CHEMICAL C26.C50.C101.C106.C107.C112.C113.C118.C122.C132.
C134.C139.C140 on MB
# 01564156 16MV47HC CHEMICAL C102.C108.C128.C130 on MB
# 00341901 16MV470HC CHEMICAL C30.C32 on MB
# 01564167 50MV1HC CHEMICAL C23 on MB
# 13619809N0 TPDN1V2R2K8S TANTALUM C115.C117 on MB (S/No. Z**7300-UP)
# 01564189 6.3MV100HC CHEMICAL C7.C13.C22.C121 on MB
# 01564190 6.3MV47HC CHEMICAL C9 on MB
POTENTIOMETER
# 01566523 RK14K124 10KB VR101 on MB
# 01454045 RK14K124 100KW VR102 on MB
# 01454067 RK11K114 50KB VR103-VR108 on MB
ENCODER
# 01454090 EC16B24204(L=25) EN1 on MB
FILTER
00891689 SBT-0260TF EMI FILTER L3-L6.L101-L105 on MB
12449467 ACB3216M-600-T BEADS INDUCTOR L1.L2 on MB
CRYSTAL,RESONATOR
00894023 MA-406 20.000MHz X'TAL X1 on MB
CONNECTOR
13379152 IL-FPC-16ST-N CN1 on MB
13379149 IL-FPC-8ST-N CN101 on MB
13379157 IL-FPC-16SL-N CN202 on SB
# 01454101 IL-FPC-8SL-N CN201 on SB
00904612 52806-1410 for LCD CN3 on MB
WIRING,CABLE
# 01561489 16x160-A6.0BB-P1.25-HBL10-S FUJI CARD(16P)
# 01561490 8x160-A6.0BB-P1.25-HBL10-S FUJI CARD(8P)
BATTERY
12569249 CR2032 220MAH/3V LITHIUM BATTERY BT1 on MB
SCREW
40011278 BINDING HEAD TAP TIGHT-P 3x8 ZC
40011323 BINDING HEAD TAP TIGHT-P 3x10 BZC
******** M9 NUT for ROTARY ENCODER
******** M9 WASHER for ROTARY ENCODER
MISCELLANEOUS
# 01562356 SHIELD SHEET
# 01450890 BATTERY TERMINAL (+) for ALKALINE BATTERY
# 01450901 BATTERY TERMINAL (-) for ALKALINE BATTERY
# 01562290 BATTERY TERMINAL (+/-) for ALKALINE BATTERY
12189815 BH-32 BATTERY TERMINAL for LITHIUM BATTERY
13429553 100-032-000 IC SOCKET for EPROM (IC10) on MB
PACKING
# 01562345 PACKING CASE
# 01564756 PAD L for PACKING
# 01670345 PAD R for PACKING
ACCESSORIES
# 71125067 OWNER'S MANUAL SET JAPANESE
# 71124823 OWNER'S MANUAL SET ENGLISH
40232389 (JAPAN ONLY)
40121767 (JAPAN ONLY)
******** LR6G/2ST ALKALINE BATTERY
OPTIONS
******** AC Adaptor PSA-100G 100V
******** AC Adaptor PSA-120 120V
******** AC Adaptor PSA-230G 230V
******** AC Adaptor PSA-240 240VA
5
NOTE:The parts marked # are new (initial parts)
MB MAIN BOARD, SB SW BOARD
CASING
# 01450856 TOP CASE
# 71124789 BOTTOM CASE ASSY
NOTE: Replacement BOTTOM CASE ASSY includes the following parts.
#******** BOTTOM CASE
# 01450890 BATTERY TERMINAL (+) for ALKALINE BATTERY
# 01450901 BATTERY TERMINAL (-) for ALKALINE BATTERY
# 01562290 BATTERY TERMINAL (+/-) for ALKALINE BATTERY
# 01340545 BATTERY COVER
# 01450889 DISPLAY COVER
01342589 15x15 FOOT
KNOB, BUTTOM
01341267 J R-KNOB SF(BLK/RED) VOLUME.LOW.INSTRUMENT SELECT.CUTOFF.
RESONANCE.DECAY.REV/DLY.FLANGER
# 01450912 D R-KNOB L RED VALUE
# 01450923 RUBBER SW PAD MUTE.ROLL.BASS.REC.START.STOP/CONT.STYLE.
PATTERN.KIT.BPM.KICK2.SNARE2.HIT1.HIT2.HIT3.
KICK1.SNARE1. CLOSE H.OPEN H.RIDE.CRASH. PERC1.PERC2
# 01450934 RUBBER SW EFFECT SONG.DEL.COPY/INS.UTILITY.PORTAMENT.T/SHIFT.
GROOVE.MIDI.<.>.SHIFT.TAP/ENTER
SWITCH
00123134 HSW-0847-01-010 POWER SWITCH SW1 on MB
JACK, SOKET
13449717 HEC2392-01-150 AC ADAPTOR JACK JK2 on MB
13429676 YKF51-5048 MIDI JACK JK1 on MB
00451445 YKC21-3040 PIN JACK JK101 on MB
13449434 HSJ-0912-01-040 MINI STEREO JACK JK102 on MB
13449283 HLJ7101-01-3010 PHONE JACK JK103 on MB
DISPLAY UNIT
# 01451034 CM1621-OS LCD UNIT
PCB ASSY
# ‰71010812 MAIN BOARD ASSY
# 71010823 SW BOARD ASSY
IC
15199776 HD6415108RF10 CPU IC5 on MB
# 01672178 LH5S471Y (Ver.1.00) MASK ROM (PROGRAMMED) IC10 on MB
00781745 M27C4001-10F1 EPROM (BLANK) IC10 on MB
15239229 TC6116AF(GP-4) CUSTOM IC (SOUND ROM) IC6 on MB
# 01561089 LH537NVP MASK ROM (WAVE ROM) IC15 on MB
01122412 TC551001CF-70L SRAM IC2 on MB
00126867 LC33832M-10-TLM PSRAM IC1 on MB
01340789 BU9480F D/A CONVERTER IC13 on MB
00232645 TC7W14F CMOS IC27 on MB
15259887 TC7SU04F CMOS IC4 on MB
15259883 TC7S00F CMOS IC11 on MB
15249104 TC7S04F CMOS IC20 on MB
15259885 TC7S32F CMOS IC21 on MB
15249121 TC7W04F CMOS IC8.IC26 on MB
15249112 TC7W32F CMOS IC25 on MB
00458034 TC75S51F CMOS OP AMP IC24 on MB
15289154 UPC4072G2-E1 FET OP AMP IC23 on MB
15289109 M5216FP-600D BIPOLAR OP AMP IC102 on MB
15289105 UPC4570G2-T2 BIPOLAR OP AMP IC101 on MB
00122978 SI-8221L SWITCH REGULATOR IC IC22 on MB
15289123 M51953AFP-600C RESET IC IC3 on MB
15289124 PC-400 PHOTO COUPLER IC7 on MB
TRANSISTOR
15309101 2SA1037KR Q105 on MB
15319108 2SC-3324GR Q101.Q102 on MB
15329503 DTA124EK Q1 on MB
15329514 DTC343TK Q106.Q107 on MB
15329521 RN1307 Q108-Q112 on MB
Note: Consider about the natural environment carefully before through the old lithium battery away when you exchange to the new one.
!
!
!
!
!
!
SAFETY PRECAUTIONS:
The parts marked have
safety-related characteristics.
Use only listed parts for
replacement.
!
CONSIDERATIONS ON PARTS ORDERING
When ordering any parts listed in the parts list, please specify the following items in the order sheet.
QTY PART NUMBER DESCRIPTION MODEL NUMBER
Ex. 10 22575241 Sharp Key C-20/50
15 2247017300 Knob (orange) DAC-15D
Failure to completely fill the above items with correct number and description will result in delayed or
even undelivered replacement.
Jul, 1998
DR-202

6
TEST MODE/IDENTIFYING VERSION NUMBER
'Preparing for TEST MODE
Equipment: Oscilloscope, Noise Meter, Stabilized
PowerSupply, Amplifier, Speaker,
Headphone, FS-5U
*Following procedures are not necessary when you
just want to identify the version number. Just plug in
the PSA Adaptor to the adaptor jack of the unit.
1. Connect Amplifier, Speaker, Oscilloscope, and Noise
Meter to the LINE OUT jacks (L/R) of the unit.
2. Connect the MIDI IN and MIDI OUT jacks with a
single MIDI cable.
3. Connect the FS-5U to the FOOT SWITCH jack.
4. Turn the POWER Switch OFF and connect the power
supply (+9.0V) to the ADAPTOR jack.
'IDENTIFYING VERSION NUMBER/ENTERING TEST
MODE
1. Turn the power ON while holding down [REC] and
[START] button.
The version number will be shown on the display as
in Fig.1.
If Fig.2 shows up on the display, keep on holding
[REC] and [START] button down, and press
[ENTER]button.
The FACTORY RESET will then be executed and the
display will change to Fig.1.
After a few seconds, the sign on the display will
disappear, entering the TEST MODE.
Notice that all the LED's of [MUTE], [ROLL], [BASS],
[REC], [START] are lit at this time.
1) LCD CONTRAST CHECK
1. After the Version Number sign disappears, all the
dots on the LCD show up.
Notice that the display gradually turns dark.
2) SWITCH CHECK
1. After the LCD display becomes most dark, Fig.3
will appear.
Turn the VOLUME knob to MAX.
2. Press the pads in the following order.
As you press the pad, you will hear a snare drum
sound, while the name of the pad to be pressed
next will be shown on the display.
Also, make sure that the LED turns off when
pressing [MUTE], [ROLL], [BASS], [REC], and
[START].
For [FOOT SW], press FS-5U connected to the unit.
3) VOLUME CHECK
1. When the Switch Check ends normally, Fig.4
appears on the display.
2. Turn the volume knobs from MIN to MAX in the
order listed below.
When each knob's value is checked from MIN to
MAX, Fig.5 appears on the display, followed by
Fig.4 showing which knob to be checked next after
a few seconds.
If the volume pot is at MIN or MAX position before
checking, turn it to the center first, then to both MIN
and MAX.
It doesn't matter whether you start from MIN or MAX.
4) ENCODER CHECK
1. When the Volume Check ends normally, the upper
part of Fig.6 will be shown on the display.
2. The lower part of Fig.6 will appear by turning the
Encoder.
Notice that the direction you turn and the number of
clicks match the sign on the display.
The check ends when you turn the dial 5 clicks or
more clockwise and both counter-clockwise.
5) SOUND CHECK
1. When the Encoder Check ends normally, Fig.7
appears on the display with a sine wave output.
2. The test mode end.
Turn the power off.
DR-202 Dr.Groove
Version 1.00 System Error ! Push ENTER key
Fig.1 Fig.2
Push SONG
Fig.3
[SONG] [DEL] [COPY/INS] [UTILITY] [PORTAMENTO] [T.SHIFT] [GROOVE] [MIDI] [<] [>]
[SHIFT] [TAP/ENTER] [MUTE] [ROLL] [BASS] [REC] [START] [STOP/CONT] [STYLE]
[PATTERN] [KIT] [BPM] [KICK2] [SNARE2] [HIT1] [HIT2] [HIT3] [KICK1] [SNARE1]
[CLOSED HH] [OPEN HH] [RIDE] [CRASH] [PERC1] [PERC2] [FOOT SW]
VR CHECK
Turn INST SELECT
Fig.4
[INSTRUMENT SELECT] [CUTOFF] [RESONANCE] [DECAY] [REV/DLY] [FLANGER]
VR INST SELECT
OK !
Fig.5
Turn VALUE
>>> + 01
Fig.6
SOUND CHECK
Fig.7
DR-202
Jul, 1998

7
'VOLTAGE DECREASING CHECK
1. Turn the power ON, and set the stabilized power
supply's voltage to +5.5V. When Fig.8 appears on the
display, it means that the unit is normal.
If not, please check IC23 and the circuit around it.
After you have checked Fig.8 on the display, turn off
the unit's power.
Then set the Stabilized power supply's voltage back
to +9.0V.
'MUTE AND OUTPUT WAVEFORM CHECK
1. Turn the VOLUME knob to the MAX position.
Turn ON the power while pressing down both [KICK2]
and [SNARE2] button. Fig.7 will appear on the
display.
2. If any sound over -80 dBm in JIS-A (IHF) mode on
noise meter comes out immediately after the power
ON, it is No Good.
Please check the circuit around muting.
3. Notice that the volume level gradually increases.
4. Make sure that no wave form appears on the
oscilloscope, when the VOLUME knob is at the MIN
position.
5. Turn the VOLUME knob to the MAX position, the
LOW knob to the FLAT, and see if the proper sine
wave (-26.0(±1.5) dBm, 130(±2) Hz) appears in JIS-A
(IHF) mode on noise meter and oscilloscope.
6. Turn the VOLUME knob to the MAX position, the
LOW knob to the CUT, and see if the proper sine
wave (-32.0(±1.5) dBm, 130(±2) Hz) appears in JIS-A
(IHF) mode on noise meter and oscilloscope.
7. Turn the VOLUME knob to the MAX position, the
LOW knob to the BOOST, and see if the proper sine
wave (-20.0(±1.5) dBm, 130(±2) Hz) appears in JIS-A
(IHF) mode on noise meter and oscilloscope.
8. Turn OFF the power.
'RESIDUAL NOISE AND PLAYING CHECK
1. Turn the power ON without pressing any pads.
After a few moments, Fig.9 appears on the display.
2. Turn the VOLUME knob to the MIN position, the LOW
knob to the FLAT, and measure the residual noise
without pressing any pad. The noise level should be
under -78.0 dBm for both LINE OUT L and R,
measured with noise meter in JIS-A (IHF) mode.
3. PLAYING CHECK
Connect the headphones and press the [START]
button, when Fig.9 is on the display.
4. Turn the VOLUME knob to the MAX position. Make
sure that the sound from the headphones or the
monitor speakers is not distorted. Also make sure
that you don't hear any noise from the both output.
5. Lift up the unit to about 10cm height. Drop it for 2 or 3
times add a shock and see if the pattern stops or the
note skips will not occur.
6. If the pattern is played correctly, press the [STOP]
button and turn the power OFF.
'RESIDUAL NOISE AND PLAYING CHECK
1. Connect the stabilized power supply (+9.0V) to the
BATTERY TERMINAL's(+) and (-), then turn the
power ON.
2. When you see Fig.9 on the display, turn the power
OFF.
This is the end of the test.
1. There would be an error when Fig.10-14 appears on
the display. Please check the related part and repair.
Be sure to BULK DUMP the data before removing the
Lithium Battery or examining the circuit upon
repairing.
2. If Fig.10 appears:
-> BULK DUMP the data first, then exchange the
Lithium Battery.
If the alert sign still keeps showing up, please
check the circuits around BATTERY.
3. If Fig.11 appears:
-> Check whether the MIDI IN and OUT jacks are
connected by a single MIDI cable.
If the alert sign still appears, please check the
circuits around MIDI.
4. If Fig.12 appears:
-> This sign appears when 2 or more switches are
pressed at he same time.
If the sign appears when pressing only one
Switch, please check the Diodes in the SW
scanning line.
Battery Low !
Fig.8
ERROR MESSAGE
Backup Battery
Low !
Fig.10
HIP-HOP 1 01
Fig.9
MIDI off Line
Fig.11
CAUTION !
DOUBLE SW ERROR
Fig.12
DR-202
Jul, 1998

8
5. If Fig.13 or Fig.14 appears:
-> Please check the circuits around what is shown in
the alert sign.
1. Turn on the power while pressing down [MUTE] and
[ROLL] button at the same time.
Keep pressing both [MUTE] and [ROLL] button until
the following appears on the display.
2. Select the type of Factory Reset by turning the
VALUE DIAL.
You can choose from the following 4 types.
3. Press [TAP/ENTER] button when you have chosen
the Reset type.
4. Press [TAP/ENTER] button again to execute the
Factory Preset. When you wish to quit the Factory
Preset, move the cursor to "No" and press
[TAP/ENTER] button.
5. It will automatically return to the start up display.
NOTE: Make sure to use Device ID number "17" for each
device, when executing Data Save or Data Load.
'VOLTAGE DECREASING CHECK
1. Press [MIDI]button , and the display will change to
the MIDI MODE.
*It will not change to the MIDI MODE while playing
Song or Pattern.
2. Select MIDI SYSTEM EXCLUSIVE parameter by
pressing the RIGHT cursor button.
3. Select Device ID number by turning the VALUE dial.
'DATA SAVE
1. Connecting DR-202 MIDI OUT socket and sequencer
MIDI IN socket through the MIDI cable.
NOTE:Use a sequencer having exclusive information
receive and record capability.
2. Press [MIDI] button , and the display will change to
the MIDI MODE.
*It will not change to the MIDI MODE while playing
Song or Pattern.
3. Select MIDI BULK DUMP parameter by pressing the
RIGHT cursor button.
4. Select the type of data transmission by turning the
VALUE dial.
5. Set the sequencer ready to record and start the
recording.
Press [TAP/ENTER] button to start transmission, and
the following message appears on the display.
6. The transmission ends after awhile, and the following
message appears on the display and soon return to
the MIDI BULK DUMP parameter screen.
Stop the sequencer recording when the following
message appears on the display.
'DATA LOAD
1. Connecting DR-202 MIDI IN socket and sequencer
MIDI OUT socket through the MIDI cable.
2. Set the sequencer ready to record and start the
playing.
NOTE: You cannot DATA LOAD while playing Song or
Pattern, or while MIDI DATA SAVE is in action.
3. The reception ends, and the following message
appears on the display.
CAUTION !
WAVE ROM ERROR CAUTION ! SRAM ERROR !
Fig.13 Fig.14
FACTORY PRESET
Factory Reset
Mode=All
The type of Factory Preset
•All : Resets all the parameters of this unit to factory
•Song Pattern : Resets Songs and Patterns to factory presets
•Kit : Resets Drum Kits to factory presets setting.
•Utility MIDI : Resets parameters for UTILITY and MIDI
Are You Sure ?
Yes No
Fig.15
MIDI SYS EXCLUS
DEVICE ID=17
MIDI CHANNEL
DRUM=10
MIDI BULK DUMP
TX All
DR-202 Dr.GROOVE
Please wait
DATA SAVE & LOAD
MIDI BULK DUMP
TX All...
MIDI BULK DUMP
TX FINISH
MIDI BULK LOAD
FINISH
DR-202
Jul, 1998

1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U9
1
2
D4
U1BC44
12 D5
U1BC44
2
1
3
4
5
JK2
HEC2392-01-150
2
1
C31
220/10
2
1
C30
470/16
VIN 4 VO
1 G
N
D
2
LIN
3
IC22
SI-8221L 2 1
3
SW1A
HSW0847-01-010
C5 0.1
C6 0.1
2 1
C7
100/6.3
R44
10k
R45
10k R46
10k
B
A
L1
ACB3216M
132
EN1A
EC16B24204
17
IC26A
TC7W04F R43
10k
35
IC26B
TC7W04F
62
IC26C
TC7W04F
3
1 4
IC24A
TC75S51F C36
0.1
11 22 33 44 5566 77 88 99
1
01
0
1
11
1
1
21
2
1
31
3
1
41
4
CN3
52806-1410
To LCD
C11 0.1
C12 0.1
2 1
C13
100/6.3
L2
ACB3216M
R11
120
R12
100 1
2
D1
1SS352
1
3
4
5
6
IC7
PC-400
L3
SBT-0260
L4
SBT-0260
R18
2.2k
C25
0.1
2
52 22 41 51 21 4
1JK1
YKF51-5048
L5
SBT-0260
L6
SBT-0260
1
2D2
1SS352
R16
220
R17
220
R19
4.7k
35
IC8B
TC7W04F
2
1
C26
10/16
17
IC8A
TC7W04F
R15
56k
1
3
2
Q1
DTA124EK
C10 0.1
R5
10k
A23 45
A22 44
A21 43
A20 42
A19 41
A18 40
A17 39
A16 38
A15 36
A14 35
A13 34
A12 33
A11 32
A10 31
A9 30
A8 29
A7 28
A6 27
A5 26
A4 25
A3 24
A2 23
A1 22
A0 21
D15 19
D14 18
D13 17
D12 16
D11 15
D10 14
D9 13
D8 12
D7 11
D6 10
D5 9
D4 8
D3 7
D2 6
D1 5
D0 4
BREQ
49 STBY
112 MD2
111 MD1
110 MD0
109
TXD2
96 RXD2
95 TXD1
94 RXD1
93
P6-7
80 P6-6
79 P6-5
78 P6-4
77 P6-3
76 P6-2
75 P6-1
74 P6-0
73
P5-7
72 P5-6
71 P5-5
70 P5-4
69 P5-3
68 P5-2
67 P5-1
66 P5-0
65
AN3
86 AN2
85 AN1
84 AN0
83
SCK2/IRQ3
92 SCK1/IRQ2
91 IRQ1
90 IRQ0
89
EXTAL
98
XTAL
99
PHAI 101
E102
NMI
2
P4-7 63
P4-6 62
P4-5 61
P4-4 60
P4-3 59
P4-2 58
P4-1 57
P4-0 56
P3-7
54 P3-6
53 P3-5
52 P3-4
51 P3-3
50
WAIT 47
BACK 48
RES 1
AS 103
LWR 106
HWR 105
RD 104
RFSH 107
AVCC
87
AVSS
82
V
C
C
5
5V
C
C
8
8V
C
C
1
0
8
V
S
S
3
V
S
S
2
0
V
S
S
3
7
V
S
S
4
6
V
S
S
6
4
V
S
S
8
1
V
S
S
9
7
V
S
S
1
0
0
IC5
HD6415108F10
R13 100
E
N
C
B
C35
0.1
R32
100
1
8
2
7
3
6
4
5RA5
EXBV8V221
1
8
2
7
3
6
4
5RA6
EXBV8V221
R31
22k 2
1
C50
10/16
RS
R/W
D
4
D
5
D
6
D
7
1
2
7
IC25A
TC7W32F
A19
E
D
0
D
1
D
2
D
3
C3 0.1
C4 0.1
V
D
D
1
8V
D
D
5
4V
D
D
9
0V
D
D
1
2
6
G
N
D
1
9
G
N
D
5
5
G
N
D
9
1
G
N
D
1
0
4
G
N
D
1
2
7
G
N
D
1
4
2
XMSF
114 X68
113 XE
112
CA19
66 CA18
67 CA17
69 CA16
68 CA15
70 CA14
71 CA13
74 CA12
73 CA11
76 CA10
80
CA5
75 CA4
77 CA3
79 CA2
81 CA1
84 CA0
86
CD7
85 CD6
87 CD5
89 CD4
93 CD3
95 CD2
94 CD1
92 CD0
88
RESET
99 ALE
100 DS(RD)
78 R/W(WR)
72 CS
97
WAIT
102 GPINT
107
EXWAIT
115 INT5
111 INT4
110 INT3
109 INT2
108 GAINT
101
CS7
116 CS6
98 CS5
82 CS4
83 CS3
118 CS2
117 CS1
52 CS0
96
RSCD
53 RWWR
56 LERD
57
LD7
65 LD664 LD5
63 LD4
62 LD3
61 LD2
60 LD1
59 LD0
58
IOCK
103 CK
105
SC5
46 SC4
47 SC3
48 SC2
49 SC1
50 SC0
51
TEST
106
WA19 134
WA18 135
WA17 137
WA16 136
WA15 138
WA14 139
WA13 141
WA12 140
WA11 4
WA10 7
WA9 2
WA8 144
WA7 143
WA6 1
WA5 3
WA4 5
WA3 6
WA2 8
WA1 9
WA0 11
WD7 10
WD6 12
WD5 14
WD4 16
WD3 20
WD2 17
WD1 15
WD0 13
WCS7 133
WCS6 132
WCS5 131
WCS4 130
WCS3 129
WCS2 128
WCS1 125
WCS0 124
EA14 45
EA13 42
EA12 43
EA11 36
EA10 33
EA9 38
EA8 40
EA7 41
EA6 39
EA5 37
EA4 35
EA3 34
EA2 32
EA1 30
EA0 28
ED7 29
ED6 27
ED5 25
ED4 23
ED3 21
ED2 22
ED1 24
ED0 26
EWE 44
ECS 31
SD 119
SCK 121
DACA(LE) 120
DACC(MX) 122
DACB(INH) 123
IC6
TC6116AF
R52
10k
2
1
C32
470/16
8
4
IC23C
UPC4072G2
5
2
IC24B
TC75S51F
BATTERY+
BATTERY-
C33
0.1
C52
0.1
WD7
WD6
WD5
WD4
WD3
WD2
WA20
WA19
WA18
WA17
WA16
WA15
WA14
WA13
WA12
WA11
WA10
WA9
WA7
WA8
WA0
A19
43 A18
2 A17
3 A16
34 A15
35 A14
36 A13
37 A12
38 A11
39 A10
40 A9
41 A8
42 A7
4 A6
5 A5
6 A4
7 A3
8 A2
9 A1
10 A0
11
*/D15 31
BYTE
33
CE
12 OE
14
D14 29
D13 27
D12 25
D11 22
D10 20
D9 18
D8 16
D7 30
D6 28
D5 26
D4 24
D3 21
D2 19
D1 17
D0 15
NC 1
NC 44
VCC 23
GND 13
GND 32
IC15
LH537NVP
WA19
WA18
WA17
WA16
WA15
WA14
WA13
WA12
WA11
WA10
WA9
WA7
WA8
A5
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A18 A18 31
A17
30 A16
2 A15
3 A14
29 A13
28 A12
4 A11
25 A10
23 A9
26 A8
27 A7
5 A6
6 A5
7 A4
8
A3
9 A2
10 A1
11 A0
12
CE
22 OE
24
D7 21
D6 20
D5 19
D4 18
D3 17
D2 15
D1 14
D0 13
VPP 1
VCC 32
VSS 16
IC10
MASK ROM LH5S471Y
(EPROM M27C4001-10F1)
R14 100
1 8
2 7
3 6
4 5
RA2
EXBV8V101
1 8
2 7
3 6
4 5 RA3 EXBV8V332
1
23456789
RA8
RCE9A103
SCAN4
SCAN3
SCAN2
SCAN1
RD8
RD7
RD6
11
22
33
44
55
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
CN1
IL-FPC-16ST-N
To SW BOARD
R53
100k
RD5
RD4
RD3
RD2
RD1
START
REC
R47
100
C58
0.1
R39
100k C45C44C43
C42
C41
1 8
2 7
3 6
4 5
RA7
EXBV8V332 0.1x8
C48
R48
10k
C47C46
A8
A7
A6
A5
A4
A3
A2
A1
A0
D7
D6
D5
A2
A1
A0
AS
WR
C16
0.1
D7
D6
D5
D4
D3
D2
D1
D0
WD7
WD6
WD5
WD4
WD3
WD2
WD1
WD0
WA6
WA5
WA4
WA3
WA2
WA1
WA0
WA6
WA5
WA4
WA3
WA2
WA1
C2
0.1
WD1
WD0
C18
0.1
8
4
IC25C
TC7W32F
C54
0.1
8
4
IC26D
TC7W04F
A14
1 A13
26 A12
2 A11
23 A10
21 A9
24 A8
25 A7
3 A6
4 A5
5 A4
6 A3
7 A2
8 A1
9 A0
10
CE
20 WE
27 OE
22
I/O7 19
I/O6 18
I/O5 17
I/O4 16
I/O3 15
I/O2 13
I/O1 12
I/O0 11
VCC 28
VSS 14
IC1
LC33832M-10-TLM
ED7
ED6
ED5
ED4
ED3
ED2
ED1
ED0
R1
10k
R6
10k
EA14
EA13
EA12
EA11
EA10
EA9
EA8
EA7
WA20
WCS0
C17
0.1
1
2
4
5
3
IC11
TC7S00F
R51
10k
GAINT
GPINT
R22 220
R24
220
5
6
3
IC25B
TC7W32F
D4
D3
D2
D1
D0
RD
R49
10k
2
1
C22
100/6.3
C34
0.1
R50
100k
C59
0.1
R21
2.2k 1 7
IC27A
TC7W14F
6 2
IC27C
R54
100
Foot_SW
VR4
VR3
VR2
VR4
VR3
VR2
TAP
R34
100k
R35
100k
VR_A
VR_B
VR1 VR1
R55
39k
BATTERY
R33
100k
R40
100k
6
5 7
IC23B
UPC4072G2
R56
10k
21
3
DA2
1SS302
21
3
DA3
1SS302
VR_A
VR_B
R23 220
A14
A13
A12
A11
A10
A9
A8
WAIT
ENC A
A15
A16
R10
100 A14
3 A13
28 A12
4 A11
25 A10
23 A9
26 A8
27 A7
5 A6
6 A5
7 A4
8 A3
9 A2
10 A1
11 A0
12
CE1
22
R/W
29 OE
24
I/O8 21
I/O7 20
I/O6 19
I/O5 18
I/O4 17
I/O3 15
I/O2 14
I/O1 13
VDD 32
GND 16
A15
31 A16
2
CE2
30
NC 1
IC2
TC551001CF-70L
D7
D6
D5
D4
D3
D2
D1
D0
ED7
ED6
ED5
ED4
ED3
ED2
ED1
ED0
EA6
EA5
EA4
EA3
EA2
EA1
EA0
BS
C1
0.1
C27
0.1
6 2
IC8C
TC7W04F
C60
0.1
3 5
IC27B
TC7W14F 8
4
IC27D
TC7W14F
8
4
IC8D
TC7W04F
C8
0.1
2
1
C9
47/6.3
DA LOUT
DA ROUT
V
D
D
8
G
N
D
3
LXR
5
SCK
7
SD
6
LOUT 4
ROUT 1
REF 2
IC13
BU9480F
1
2
3
4
5
6
7
8
9 RA9
RCE9A473
R4
100
R3
100
D0
D1
D2
D3
D4
D5
D6
MT
RO
RE
ST
R2
100
C15
0.1
1
2 4
5
3
IC21
TC7S32F R59
10k
R36
4.7k
A7
A6
A5
A4
A3
A2
A1
A0
C28
0.1
C51
0.001
R
S
T
6
DLY 5 VCC
7
G
4
IC3
M51953AFP
C40
0.1
2 4
5
3
IC20
TC7S04F
RESET
R37
100k
Memory BAT
R7
1M
R30
10k
2
3 1
IC23A
UPC4072G2 C21
0.1 R9
100
2 4
5
3
IC4
TC7SU04F
1
2
3
DA1
1SS301 R42
100k
R58
39k
R41
100k
R29
10k
2
1
BT1
CR2032 R38
1M C19
5p
C20
5p
1 4
X1
MA406-20.000MHZ
R8
680
R57
4.7M
C14
0.1
2
1
C23
1/50
clock
D7
LED1
LED2
LED3
LED4
LED5
BS
MT
RO
RE
ST
MAIN BOARD ASSY(1/2)
AD +5
D +5
D
+
-
D +5
D
D +5
D +5
D
D +5
D +5
+-
D
+
-
D +5
D
D
D
+
-
D
D +5
BAT
BAT
D
D
+
-
D +5
D
D +5
D
D
DD
D +5
-
D +5
+
D +5
DD
BAT
D +5
D +5
D
D
D +5
D
DD +5
D +5
+
-
D +5
A +9
-
+
D
D
BAT
D
D +5
D +5
D
D +5
D +5 D +5 D +5
AB
EN
D
++ -
-
+
-
+
-
D +5
D
D
D +5
D
D
D +5
DD
D +5
D +5
D +5
-
+
-
+
D
D +5
D
D +5
D +5
D +5
DD
D +5
DD
D +5
D
+
-
DD
D
D
5245
2
4
D
D
D
D +5
A +9
A
D
D
D
D
D
CIRCUIT DIAGRAM
MAIN BOARD ASSY (1/2)
DR-202
Jul, 1998

PHONES
C129
100p
R141
100k
L102
SBT-0260 2
3
1
JK102
HSJ-0912-01-040
R142
22(1/4W)
2 1
C128
47/16
1
2
3
Q101
2SC3324GR C114
0.068 R119
10k
R116
100k R117
1k
21
C115
*C115, C117
TANTALUM CAPACITOR 2.2/35
(S/No. Z**7300-UP)
2.2/50
DA LOUT
DA ROUT
21
C101
10/16
R101
56k
R102
1k R103
10k R106
10k
21
C102
47/16 R104
2.2k
C103
0.0068
C104
220p
C105
0.0056
MASTER VOLUME
2 1
C106
10/16
21 C113
10/16
2
3 1
IC101A
uPC4570
R105
6.8k
11
1
2
13 VR101A
10kB
21
2
2
23 VR101B
10kB
R115
10k
R113
10k
R114
100k
1
1
12
1
3
VR102A
100kW
2
3 1
IC102A
M5216
C142
100p LOW
2 1
C132
10/16
R145
100k
2 1
C130
47/16
R118
330
R146
1k
1
2
3Q106
DTC343TK
R147
220
C133
100p
C131
100p
R143
100k
L103
SBT-0260
L104
SBT-0260 12
11
22
21
JK101
YKC21-3040
R144
22(1/4W)
L
R
R149
1k
1
2
3Q107
DTC343TK
R150
220
C135
100p
L105
SBT-0260
2 1
C134
10/16
R148
100k
R124
330
C137
150p
R121
10k
C116
0.068 R123
10k
R126
100k
R125
10k
R120
100k
1
2
3
Q102
2SC3324GR
2
1
22
2
3
VR102B
100kW
R122
1k
21
C117
2.2/50
6
5 7
IC102B
M5216
C143
100p2 1
C112
10/16
21
C118
10/16
6
5 7
IC101B
uPC4570
R108
6.8k
R109
10k
21
C108
47/16 R107
2.2k
21
C107
10/16 R110
10k
R111
1k
R112
56k
C109
0.0068
C111
220p
C110
0.0056
8
4
IC101C
uPC4570
C119
0.1 C120 0.1
2
1
C121
100/6.3
8
4
IC102C
M5216
R127
10k
R128
10k 1
3
2
Q105
2SA1037KR
R131
100k
R130
220k
2
1
C122
10/16
21 3DA102
1SS302
2
1
3
DA101
1SS302
C138
150p
2
1
C139
10/16
R140
100k
START/STOP
C127
100p
L101
SBT-0260 2
4
1
JK103
HLJ7101-01-3010
C126
100p
R139
10k
Foot_SW
R151
220k
C136
0.0018
INST
R133
220k
1
3
2
VR103
50kB
DECAYRESONANCE
CUTOFF R137
220k
R134
220k R138 220k
1
3
2
VR106
50kB
1
3
2
VR104
50kB
1
3
2
VR105
50kB
R152
220k
C125
0.0018
C124
0.0018
VR3
VR1
VR_A
VR_B
VR2
VR4
VR3
VR2
VR1
VR_A
VR_B
VR4
1
2
3Q108
RN1307
R154
390
LED1
LED2
LED3
LED4
1
2
3Q109
RN1307
1
2
3Q110
RN1307
1
2
3Q111
RN1307
R155
390 R156 390 R157 390
1
2
3Q112
RN1307
R158
390
BS
MT
RO
RE
ST
D+5DG
2
1
C140
10/16
To SW BOARD
1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8
CN101
IL-FPC-8ST-N
MAIN BOARD ASSY(2/2)
LED5
C123
0.0018
FLANGERDELAY
R135
220k R136 220k
1
3
2
VR107
50kB 1
3
2
VR108
50kB
*
*
+-
+-
+
+
-
+-
-
+
+
-
-
+
-
+
-
+
-
ADP
V
ADP
V
A
A
A
A
A
A
A
A
-
+
-
+
A +9
A
A
ADP
V
ADP
V
ADP
V
ADP
V
-
+
-
+
A +9
A
A
A
A
+
-
+
-
A +9 A +9
A
AAA
+ -
D +5 D +5
D D DD D
A
A
AA
A
AA
-+
-+
-+
A
A
D +5
D
-
+
D +5
D +5
DD D
D
D
DD
D
D
D
D
D
A +9 A +9
ADP V
-
+
-
+
A
A +9
-
+
A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
10
DR-202
Jul, 1998
MAIN BOARD ASSY (2/2)

1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U11
CIRCUIT BOARD
MAIN BOARD ASSY (71010812)
View from component side. View from foil side.
DR-202
Jul, 1998

1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
12
1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16
CN202
IL-FPC-16SL-N
SCAN4
SCAN3
SCAN2
SCAN1
MUTE
1
2
3
DA201
1SS301
1 2
SW201
1 2
SW202
1 2
SW209
1 2
SW210
PERC1MIDI
1 2
SW225
1 2
SW226
1 2
SW217
1 2
SW218
1
2
3
DA205
1SS301
STOP/CONT
1
2
3
DA209
1SS301
1
2
3
DA213
1SS301
REC 1
2
SW234
1
2
SW233 1
2
3
DA214
1SS301
TAP/ENTER
STYLE
PATTERN
KIT
UTILITY
GROOVE
1 2
SW227
1 2
SW228
1 2
SW219
1 2
SW220 1
2
3
DA206
1SS301
1
2
3
DA210
1SS301
COPY/INS
ROLL
1 2
SW203
1 2
SW204
1 2
SW211
1 2
SW212
CRASH
RIDE
OPEN HHIT 2
HIT 3
1
2
3
DA202
1SS301
RD8
RD7
RD6
RD5
RD4
RD3
RD2
RD1
TAP
START
REC
To MAIN BOARD
B
A
S
S
1
2
D236
LT1U67A
1
2
D237
LT1U67A
BS
MT 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8
CN201
IL-FPC-8SL-N
M
U
T
E
R
O
L
L
R
E
C
S
T
A
R
T
1
2
D233
LT1U67A
1
2
D234
LT1U67A
1
2
D235
LT1U67A
1 2
SW205
1 2
SW206
1 2
SW207
1 2
SW213
1 2
SW214
1 2
SW215
CLOSE H
SNARE 1SNARE 2
HIT 1
1
2
3
DA203
1SS301
BPMT.SHIFT
DEL
1 2
SW229
1 2
SW230
1 2
SW231
1 2
SW221
1 2
SW222
1 2
SW223
1
2
3
DA207
1SS301
1
2
3
DA211
1SS301
SHIFTSTART 1
2
SW235 1
2
3
DA215
1SS301
1
2
3
DA216
1SS301
<-
->SONG
1 2
SW232 1 2 SW224
1
2
3
DA208
1SS301
1
2
3
DA212
1SS301
PORTAMENTO
PARC2 BASS
1
2
3
DA204
1SS301
1 2
SW208
1 2
SW216
KICK 1KICK 2 RO
RE
ST
D+5
DG To MAIN BOARD
D
D +5
D
D
D
D
CIRCUIT DIAGRAM
SW BOARD ASSY
DR-202
Jul, 1998

1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U13
CIRCUIT BOARD
SW BOARD ASSY (71010823)
View from component side. View from foil side.
DR-202
Jul, 1998