Roland DJ-202 Operating and maintenance manual

SERVICE NOTES
Issued by RJA
Copyright © 2017 Roland Corporation
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of Roland Corporation.
CC-OKN17057138E0
Oct. 2017 DJ-202
Table of Contents
Cautionary Notes ..............................................................2
Specifications .....................................................................2
Location of Controls (Top)...............................................3
Location of Controls (Top) Parts List .............................3
Location of Controls (Front, Rear) ..................................4
Location of Controls (Front, Rear) Parts List ................4
Exploded View ..................................................................6
Exploded View Parts List.................................................7
Plain View (1).....................................................................8
Plain View (1) Parts List...................................................8
Plain View (2).....................................................................9
Plain View (2) Parts List...................................................9
Disassembly Procedure..................................................10
Wiring Diagram/Block Diagram..................................11
Parts List ...........................................................................12
The Locations of the Buttons Using the Operation ....14
Verifying the Version......................................................14
Data Backup and Restore Operations ..........................15
Updating the System ......................................................16
Performing a Factory Reset............................................16
Test Mode .........................................................................16
Circuit Board (Jack, Phones, Sensor Board) ................20
Circuit Diagram (Jack Board: 1/3)................................22
Circuit Diagram (Jack Board: 2/3)................................24
Circuit Diagram (Jack Board: 3/3)................................26
Circuit Board (Panel Board)...........................................28
Circuit Diagram (Panel Board)......................................30
Circuit Board (XFDR, Panel-C Board)..........................32
Circuit Diagram (Panel-C Board: 1/2) .........................34
Circuit Diagram (Panel-C Board: 2/2) .........................36
Circuit Diagram (XFDR Board).....................................38

2
Oct. 2017 DJ-202
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 Data
Backup and Restore Operations (p. 15) 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 ******** will not 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).
• Because it is carried in electronic data on the Roland web site.
• Because it is a package or an accessory irrelevant to the function
maintenance of the main body.
• Because it can be replaced with an article on the market. (battery or etc.)
Circuit Diagram
In the circuit diagram, “NIU” is an abbreviation for “Not in Use,” and
“UnPop” is an abbreviation for “Unpopulated.” They both mean non-mounted
components. The circuit board and circuit board diagram show silk-screened
indications, but no components are mounted.
There are cases that the circuit diagrams are omitted. This omission will
happen to the highly integrated digital circuit boards (e.g. Main Board etc) that
are virtually impossible to repair nor analyze.
Roland Japan Warranty
Please send the problem report with followings when the defect occurred
within one year from production and within one month from the first
customer’s purchase.
• Model name:
• Serial number:
•Version:
• Purchase date by the first customer: yyyy/mm/dd
•Symptom:
• Frequency: always, sometimes or seldom
• Confirmed the symptom at your service dept: Yes/No
Please send the problem report to [email protected].
Support for Software
If a customer contacts about the software, please introduce SERATO support
webpage.
https://support.serato.com/hc/en-us
The entrance is “Help Request” (green banner) on that page.
Specifications
Roland DJ-202: DJ Controller
Signal processing
Sampling Frequency: 48 kHz
Nominal input level
MIC IN (1/4-inch phone type): -60 dBu
Nominal output level
MASTER OUT: 2.0 Vrms
Input impedance
MIC IN (Combo type): 7 kΩ or greater
Output impedance
MASTER OUT: 1 kΩ
PHONES: 22 Ω
Frequency response
48.0 kHz: 20 Hz–22 kHz (+0/-2 dB)
Connectors
MIC IN jack: 1/4-inch phone type
MASTER OUT jacks: RCA phono type
PHONES jacks: stereo 1/4 inch phone type
PC port: USB type B
MIDI OUT connector
DC IN jack
Power supply
USB bus power
Current draw
500 mA
Dimensions
478 (W) x 297 (D) x 62 (H) mm
18-7/8 (W) x 11-3/4 (D) x 2-1/2 (H) inches
Weight
2.1 kg
4 lbs 11 oz
Accessories
Startup Guide (#5100056470, #5100057921)
USB cable (#5100056469)
* 0 dBu = 0.775 Vrms
* Printed matters will not be supplied after the end of the production. Then,
download the electronic file from the Roland web site.
* In the interest of product improvement, the specifications and/or appearance of
this unit are subject to change without prior notice.

3
Oct. 2017 DJ-202
Location of Controls (Top)
fig.panel-1.eps
Location of Controls (Top) Parts List
1 2 83 3
4
74
1 2
7
4
4 33 9 9
12711 1110
1
3
3
13
614 55 6 14 13
No. Part Code Part Name Description Q’ty
1 5100056458 J R-KNOB MF BLK/LCG 7
5100055789 ROTARY POTENTIOMETER XV09223YNPV25F1B10K 7
2 5100052450 S-KNOB BLK 2
5100055818 SLIDE POTENTIOMETER RS45111C6008 2
5100056468 DUST COVER 2
3 5100055885 S-KEYTOP LX1H CLR 17
02891789 TACT SWITCH SKRGADD010 H=5.0 17
4 5100055886 C-KEYTOP MX1H CLR 4
02891789 TACT SWITCH SKRGADD010 H=5.0 4
5 5100055887 KEYTOP UNIT 2
02891789 TACT SWITCH SKRGADD010 H=5.0 4
6 5100056461 RUBBER PAD 2
7 5100055884 S-KEYTOP SX2H CLR 4
02891789 TACT SWITCH SKRGADD010 H=5.0 8
8 5100056459 J R-KNOB MF BLK 1
5100055791 ENCODER XRE0126PVB20FINB1-2-24PCE 1
9 5100056458 J R-KNOB MF BLK/LCG 9
5100055896 ROTARY POTENTIOMETER XV09223NPV25F1B10KCC 9
10 5100056466 LED COVER 1
11 5100056460 J S-KNOB BLK 2
5100055819 SLIDE POTENTIOMETER RS45111A6A08 2
5100056468 DUST COVER 2
12 5100056460 J S-KNOB BLK 1
5100057536 SLIDE POTENTIOMETER RA45H1F-211-15C1-B10K 1
5100056468 DUST COVER 1
13 02891789 TACT SWITCH SKRGADD010 H=5.0 8
14 5100055374 TACT SWITCH EVQ11D04K 16

4
Oct. 2017 DJ-202
Location of Controls (Front, Rear)
fig.panel-2.eps
Location of Controls (Front, Rear) Parts List
1
2 14 53
Front
Rear
No. Part Code Part Name Description Q’ty
1 13449275 6.5MM JACK YKB21-5074 2
2 5100009531 USB CONNECTOR B TYPE FEMALE YKF45-0044N 1
3 5100055604 DIN CONNECTOR YKF51-5050V 1
4 03784323 RCA CONNECTOR YKC21-5450 1
5 04901712 ROTARY POTENTIOMETER RK09K1110D4S 1

5
Oct. 2017 DJ-202

6
Oct. 2017 DJ-202
Exploded View
fig.bunkai.eps
21
1
2
3
6
4
5
9
17
15
7
23
12
13
3
22
22
11
14 9
16
17
19
20
18
3
11
14
8
View 1 View 2 View 3 View 4
10
Refer to Location of Controls (Top) (p. 3).
Refer to Location of Controls (Top) (p. 3).

7
Oct. 2017 DJ-202
Exploded View Parts List
No. Part Code Part Name Description Q’ty
1 5100056462 PLATTER SHEET 2
2 5100056457 PLATTER 2
3 5100058428 PLATTER SPACER 4
4 5100056466 LED COVER 1
5 5100056455 TOP CASE 1
6 5100056468 DUST COVER 5
7 5100058430 INSULATING SHEET 1
8 5100056464 FADER PLATE 1
9 5100056465 SHAFT PLATE 2
10 17042117 GREASE FLOIL GP-29 (#5100059211) -
11 5100058429 E-RING 11040 2
5100055684 JACK SHEET ASSY 1
* This unit includes the following parts.
12 ******** JACK BOARD 1
13 ******** PHONES BOARD 1
14 ******** SENSOR BOARD 2
5100055694 PANEL-C SHEET ASSY 1
* This unit includes the following parts.
15 ******** XFDR BOARD 1
16 ******** PANEL-C BOARD 1
17 5100055692 PANEL BOARD ASSY 2
18 5100055682 MAIN BOARD ASSY 1
19 5100056463 PWB HOLDER 1
20 5100056456 BOTTOM CASE 1
21 5100056467 FOOT 6
22 5100057600 SOFT GASKET NLCG-030100D L=10 KS 2
23 5100052292 RIBBON CABLE 3P L=25 P=2.0 1

8
Oct. 2017 DJ-202
Plain View (1)
fig.heimen-1.eps
Plain View (1) Parts List
View 1
View 2
a
b
a
b
b
View 1
View 2
No. Part Code Part Name Description Q’ty
a 40011334 SCREW 3X12 BINDING TAPTITE P FE BZC 15
No. Part Code Part Name Description Q’ty
b 40011312 SCREW 3X8 BINDING TAPTITE P FE BZC 12

9
Oct. 2017 DJ-202
Plain View (2)
fig.heimen-2.eps
Plain View (2) Parts List
View 3, 4
b
b
b
bb
b
B
B
View 3
View 4
No. Part Code Part Name Description Q’ty
B, b 40011312 SCREW 3X8 BINDING TAPTITE P FE BZC 33

10
Oct. 2017 DJ-202
Disassembly Procedure
1. Remove the screws a(x 15) securing the Bottom Case.
(Plain View (1) (p. 8), View 1)
2. Detach the Bottom Case.
Detaching the Platters
1. Disconnect the connectors (1 each on the left and right) connected the
Sensor Board to the Panel Board.
2. Remove the screws B(x 4) securing the Sensor Board
(Plain View (2) (p. 9), View 4).
3. Insert the straight headed precision screwdriver into the hole of the E-
Ring (#5100058429) and hold it.
fig.kumitate-1.eps
4. Press the E-Ring (#5100058429) out with the needle nose pliers and
remove it from the pipe.
fig.kumitate-2.eps
* Never reuse the E-Ring which has been removed once, replace it with new one.
5. Remove the Platter Spacer (#5100058428).
6. Hold down the pipe of the Platter and press it out toward to the Top
Case, then detach it.
Assembling the Platters
1. Attach the Platter Spacer (#5100058428) to the pipe of the Platter.
2. Apply grease (#17042117) to the pipe of the Platter.
fig.kumitate-5.eps
3. Pass the platter through the hole in the Top Case.
4. Verify that the tip of the pipe of the platter is coming out from the hole of
the platter and attach the Platter Spacer (#5100058428).
fig.kumitate-3.eps
5. Fit the E-Ring (#5100058429) with the needle nose pliers.
fig.kumitate-4.eps

11
Oct. 2017 DJ-202
Wiring Diagram/Block Diagram
fig.wiring-202.eps
JK1 VBUS+5V CKCPU VBUS+5V D+3.3V
USBD D+1.2V
SCL/SDA
TXD TXD/RXD A+3.3V
JK2
MCK0, BCK0, LRCK0
SDo0, o1, i2
VBUS+5V
D+3.3V
VBUS+5V
D+3.3V
JK2
MAIN OUT
JK1 VR1
MIC IN
VBUS+5V A+5V
A-5V
JK501
PHONES
QSPI
for
Core0
CPU
BUS
Prog
SerialFlash
IC5
16Mbit
Work
SDRAM
IC6
64Mbit
OSC
48MHz
IC3
CN8
UICPU
STM32F042
C6T6
IC6
CN1
CN4
CN6
C
K
C
P
U
U
SB
D
S
C
L
/
L
L
S
D
A
T
X
D
T
X
D
/
R
X
D
M
C
K
0
,
BC
K
0
,
L
R
C
K
0
S
D
o
0
,
o
1
,
i
2
BMC
IC1
CN7
CN501
LED
SW
AD
PLATTE
ADC
AK5357
IC11
IC14
TPS54295RS
AR
LED Driver
IS31FL3733
IC7
Platter
Touch
Sense
DAC
AK4386
IC8
DAC
AK4386
IC9
IC15
NJM11100
CN2
CN6
CN3/4
LED
SW
AD
ENC
CN5
CN1CN1
CN601
CN2
CN2
CN501
XFADER
IC1
LM22674MR
X- A D J
IC2
NJM11100
Sensor
Panel-L
Panel
Jack
Main
Phones
Panel-C
XFDR
Panle-R
3 7 4
6
5
1
8
2
No. Part Code Part Name Description Q’ty
1 5100058677 WIRING 1061#28 3X300-PHR-PHR-F 1
2 5100058678 WIRING 1061#28 4X50-PHR-PHR-F 2
3 5100058679 WIRING 1061#28 10X120-PHR-PHR-F 1
4 5100058680 WIRING 1061#28 12X100-PHR-PHR-F 1
5 5100058717 FLAT CABLE SML2SC-30(NC)X110-BD6-P1.0-S4 1
6 5100058718 FLAT CABLE SML2SC-34(NC)X180-BD6-P1.0-S4 2
7 5100059749 FLAT CABLE SML2SC-10(NC)X180-BD6-P1.0-S4 1
8 5100052292 RIBBON CABLE 3P L=25 P=2.0 1

12
Oct. 2017 DJ-202
Parts List
fig.-part1-e.eps
Note: The parts marked # are new. (initial parts) The description “Q’ty” means a necessary number of the parts per one product.
Due to one or more of the following reasons, parts with parts code ******** cannot be supplied
as service parts.
• Supply is prohibited due to copyright restrictions.
• It is carried in electronic data on the Roland website.
• The part is made to order (at current market price).
• It can be replaced with an article on the market. (battery or etc.)
• It is a package or an accessory irrelevant to the function maintenance of the main body.
• A number of circuit boards are grouped together and supplied as a single circuit board (under a different part code).
• Reissuance is restricted.
• It is supplied as an assembled part
(under a different part code).
Safety Precautions:
The parts marked have
safety-related characteristics. Use
only listed parts for replacement.
CASING
# 5100056455 TOP CASE 1
# 5100056457 PLATTER 2
# 5100056462 PLATTER SHEET 2
# 5100056456 BOTTOM CASE 1
CHASSIS
# 5100056464 FADER PLATE 1
# 5100056463 PWB HOLDER 1
# 5100056465 SHAFT PLATE 2
KNOB, BUTTON
# 5100056458 J R-KNOB MF BLK/LCG 16
# 5100056459 J R-KNOB MF BLK 1
# 5100056460 J S-KNOB BLK 3
5100052450 S-KNOB BLK 2
# 5100055886 C-KEYTOP MX1H CLR 4
# 5100055885 S-KEYTOP LX1H CLR 17
# 5100055884 S-KEYTOP SX2H CLR 4
# 5100055887 KEYTOP UNIT 2
# 5100056461 RUBBER PAD 2
SWITCH
02891789 TACT SWITCH SKRGADD010 H=5.0 41
# 5100055374 TACT SWITCH EVQ11D04K 16
JACK, EXT TERMINAL
13449275 6.5MM JACK YKB21-5074 2
# 5100055604 DIN CONNECTOR YKF51-5050V 1
03784323 RCA CONNECTOR YKC21-5450 1
5100009531 USB CONNECTOR B TYPE FEMALE YKF45-0044N 1
PWB ASSY
# 5100055682 MAIN BOARD ASSY 1
# 5100055684 JACK SHEET ASSY 1
* This unit includes the following parts.
******** JACK BOARD 1
******** PHONES BOARD 1
******** SENSOR BOARD 2
# 5100055692 PANEL BOARD ASSY 2
# 5100055694 PANEL-C SHEET ASSY 1
* This unit includes the following parts.
******** PANEL-C BOARD 1
******** XFDR BOARD 1
POTENTIOMETER
04901712 ROTARY POTENTIOMETER RK09K1110D4S 1
# 5100055789 ROTARY POTENTIOMETER XV09223YNPV25F1B10K 7
# 5100055896 ROTARY POTENTIOMETER XV09223NPV25F1B10KCC 9
# 5100055818 SLIDE POTENTIOMETER RS45111C6008 2
# 5100055819 SLIDE POTENTIOMETER RS45111A6A08 2
# 5100057536 SLIDE POTENTIOMETER RA45H1F-211-15C1-B10K 1
ENCODER
# 5100055791 ENCODER XRE0126PVB20FINB1-2-24PCE 1

13
Oct. 2017 DJ-202
WIRING, CABLE
# 5100059749 FLAT CABLE SML2SC-10(NC)X180-BD6-P1.0-S4 1
# 5100058717 FLAT CABLE SML2SC-30(NC)X110-BD6-P1.0-S4 1
# 5100058718 FLAT CABLE SML2SC-34(NC)X180-BD6-P1.0-S4 2
5100052292 RIBBON CABLE 3P L=25 P=2.0 1
# 5100058677 WIRING 1061#28 3X300-PHR-PHR-F 1
# 5100058678 WIRING 1061#28 4X50-PHR-PHR-F 2
# 5100058679 WIRING 1061#28 10X120-PHR-PHR-F 1
# 5100058680 WIRING 1061#28 12X100-PHR-PHR-F 1
SCREWS
40011312 SCREW 3X8 BINDING TAPTITE P FE BZC 45
40011334 SCREW 3X12 BINDING TAPTITE P FE BZC 15
MISCELLANEOUS
# 5100056467 FOOT 6
# 5100056468 DUST COVER 5
# 5100056466 LED COVER 1
# 5100058428 PLATTER SPACER 4
# 5100058429 E-RING 11040 2
# 5100058430 INSULATING SHEET 1
# 5100057600 SOFT GASKET NLCG-030100D L=10 KS 2
40016523 INSULOK TIE 100M/M T-18R (1000 PCS ORDERING PER) 2
40232123 ACETATE TAPE NITTO #5 BLACK W20MM 30M 20P -
# 17042117 GREASE FLOIL GP-29 (#5100059211) -
ACCESSORIES (Standard)
# 5100056470 OWNER’S MANUAL MLUTILANGUAGE 1
# 5100057921 OWNER’S MANUAL CHINESE 1
5100056469 USB CABLE 1.5M BLACK 1

14
Oct. 2017 DJ-202
The Locations of the Buttons Using the Operation
The top panel is separated in the following sections. The locations of the controls to be used in the following operations are described using these section names.
For example, START/STOP is in the mixer section.
fig.test-panel-202-e.eps
Verifying the Version
Items Required
•Computer
• USB cable (Type-A/Type-B)
•USBdriver
* Obtain this from the following web page, and install it on the computer just
described.
https://www.roland.com/global/
Procedure
1. Hold down the rotary selector (the BACK knob) in the browser section
and connect the computer to the USB ( ) connector.
fig.rotary-selector-202-e.eps
2. When START/STOP in the deck section lights up, release your finger.
At this time, the eight pads in the left and right deck sections and the
level indicator in the mixer section light up or go off to indicate the
application version.
As shown in the figure below, any one of eight pads on the left side lights
up and one's digit value of the version number is indicated. In the same
way, the value of the second decimal place is indicated by the level
indicator and the value of the third decimal place is indicated by the
eight pads on the right side.
fig.version-202-e.eps
* 0 is indicated by no lighting and 9 is indicated by all lighting of 8 pads or LEDs.
3. Turn the rotary selector to make the center CUE light up.
In the same way as in step 2, the eight pads on the left side, the level
indicators and the eight pads on the right side light up or go off to
indicate the updater version.
4. Turn the rotary selector to make the right CUE light up.
In the same way as in step 2, the eight pads on the left side, the level
indicators and the eight pads on the right side light up or go off to
indicate the loader version.
5. Detach the USB cable to turn off the power.
2 1
3
2
1 2 3
Browser section Deck section Mixer section
Rotary Selector
Right Pad: the value of
the second decimal place
1234
5678
1
13
57
2
4
6
8
234
5678
Left Pad: the one’s digit value
Center Level Indicator:
the value of the first decimal place

15
Oct. 2017 DJ-202
Data Backup and Restore Operations
Backing Up Pattern and Inst
Items Required
•Computer
• USB cable (Type-A/Type-B)
•USBdriver
* Obtain this from the following web page, and install it on the computer just
described.
https://www.roland.com/global/
Procedure
1. Hold down the center CUE in the mixer section and connect the computer
to the USB ( ) connector.
2. When START/STOP in the mixer section flashes, release your finger.
The ROLAND drive appears on the computer’s screen.
3. Open the BACKUP folder on the ROLAND drive.
4. Copy all files in the BACKUP folder to the computer.
5. Eject the ROLAND drive and disconnect the USB cable.
The power is turned off.
Backing Up System Settings
Follow the procedure below to write down on a piece of paper.
1. Hold down the right LOAD in the browser section and connect the computer to the USB ( ) connector.
2. When START/STOP in the mixer section flashes, release your finger.
The eight pads in the left deck section and the upper left pad in the right deck section light up.
3. Press the upper left pad in the left deck section.
The pressed pad flashes.
At this time, the value of “Mic audio low cut filter setting” is indicated on the level indicator as shown in the table below.
Indication of the level indicator
* Bold: initial value
4. Write down the setting value.
5. In the same way, press each lighted pad to write down the setting values of the corresponding parameter.
6. Detach the USB cable to turn off the power.
Restoring Pattern and Inst
1. Hold down the center CUE in the mixer section and connect the computer to the USB ( ) connector.
2. When START/STOP in the mixer section flashes, release your finger.
The ROLAND drive appears on the computer’s screen.
3. Open the RESTORE folder on the ROLAND drive.
4. Copy the all files which have been backed up to the RESTORE folder.
5. Eject the ROLAND drive and disconnect the USB cable.
The power is turned off.
Pad Item Setting Value Initial Value
Left
1Mic audio low cut filter setting 0 through 10, Off 2
2Mic audio noise gate setting 0 through 10, Off 2
3Mic input effect selection Reverb, Delay, Delay+Reverb, Off Delay+Reverb
4Mic input effect setting 0 through 10, Off 2
5Master output adjustment 0, -3, -16, -12, -18 0
6Margin at both ends of cross fader 0 through 10 1
7Demo mode time setting 0 through 10, Off 3
8LED brightness adjustment 0 (bright) through 3 (dark) 0
Right 1USB mode settings Generic, Vendor Vendor
Left pad Right pad
1 2 3 4 5 6 7 8 1
-L1.eps -L1.eps ig.backup-eps -L1.eps ffig.backu sfig.backup ps ig.backup-R1.eps
Off 1
2
2
3
45
67
89
10
Off 1
2
2
3
45
67
89
10
Off Reverb
Delay Delay
Delay
+ Reverb
+ Reverb
Off 1
2
2
3
45
67
89
10
0
0
-3
-6 -12
-18
01
1
23
45
67
89
10
Off 1
23
3
45
67
89
10
01
1
23
Generic Vendor
Vendor

16
Oct. 2017 DJ-202
Restoring System Settings
1. Hold down the right LOAD in the browser section and connect the
computer to the USB ( ) connector.
2. When START/STOP in the mixer section flashes, release your finger.
The eight pads in the left deck section and the upper left pad in the right
deck section light up.
3. Press the upper left pad in the left deck section.
The pressed pad flashes.
4. Turn the rotary selector (the BACK knob) in the browser section to set the
value of “Mic audio low cut filter setting” that you have written down.
fig.rotary-selector-202-e.eps
5. Refer to the table described earlier and set other parameters in the same
way.
6. Press START/STOP.
When the level indicator lights up in the sequence from bottom to top
and then all buttons and pads light up, the setting has finished.
7. Detach the USB cable to turn off the power.
Updating the System
Items Required
•Computer
• USB cable (Type-A/Type-B)
•USBdriver
* Obtain this from the following web page, and install it on the computer just
described.
https://www.roland.com/global/
• Update program (obtained via Service Net)
Procedure
1. Hold down SYNC in the mixer section and connect the computer to the
USB ( ) connector.
2. When the lowermost LEDs (2) of the level indicator flash and the
ROLAND drive appears on the computer’s screen, release your finger
from SYNC.
SYNC flashes.
3. Copy the update program (DJ202-505_UPA_up.bin) to the root folder of
the ROLAND drive.
4. Press SYNC.
The update starts, and the eight pads on left and right flash.
* Do not turn off the power while the update is in progress (while the eight pads on
left and right are flashing). Turning off the power before the operation finishes
might make the unit impossible to start.
When all pads change from flashing to lighting, updating of the Main
CPU has finished.
5. Disconnect the USB cable and connect the computer to the USB ( )
connector again. (turning on the power in normal mode)
If the Sub CPU update is included in the update program, the eight pads
on left and right flash again.
6. Press SYNC.
When all pads change from flashing to lighting, updating of the Sub CPU
has finished.
7. Detach the USB cable to turn off the power.
Performing a Factory Reset
Items Required
•Computer
•USBcable(Type-A/Type-B)
Procedure
1. Hold down the left LOAD in the browser section and connect the
computer to the USB ( ) connector.
2. When START/STOP in the mixer section flashes, release your finger.
3. To execute the factory reset, press START/STOP. To cancel it, detach the
USB cable and turn off the power.
Pressing START/STOP flashes the level indicator and executes the
factory reset. When all buttons and pads light up, the factory reset has
finished.
4. Detach the USB cable to turn off the power.
Test Mode
Items Required
•Computer
•USBcable(Type-A/Type-B)
•MIDIcable
•MIDIdevice
• Oscilloscope
•Audiocable(RCAphono/TRS)
• Headphones
• Amp-equipped monitor speakers
•Noisemeter
•USBdriver
* Obtain this from the following web page, and install it on the computer just
described.
https://www.roland.com/global/
Test Items
1. VERSION CHECK (p. 17)
2. DEVICE CHECK (p. 17)
3. MIDI OUT CHECK (p. 17)
4. ENCODER CHECK (p. 17)
5. SW/LED CHECK (p. 17)
6. LED CHECK (p. 17)
7. AD 1 (RVR) (p. 18)
8. AD 2 (SVR) (p. 18)
9. PLATTER (p. 18)
10. PHONES/MASTER OUT (p. 18)
11. MIC IN (p. 18)
12. MUTE (p. 19)
13. NOISE (p. 19)
14. FACTORY RESET (p. 19)
Entering the Test Mode
1. Hold down the left and right CUEs in the mixer section at the same time
and connect the computer to the USB ( ) connector.
2. When START/STOP in the mixer section flashes, release your fingers.
The unit enters the test item select menu.
Rotary Selector

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Oct. 2017 DJ-202
Selecting and Executing Test Items
1. In the test item select menu, turn the rotary selector (the BACK knob) in
the browser section to select the test item.
The pad (refer to the figure below.) corresponding to the selected test
item lights up.
fig.test-item-select-202-e.eps
* Whichever pad of two “6” on the left side is pressed, the test item 6. LED
CHECK is selected.
2. Press the rotary selector or START/STOP.
The selected test item is executed.
Skipping the Test Items
•SHIFT + LOAD on the right side: Execution advances to the next test
item.
•SHIFT + LOAD on the left side: Execution goes back to the previous
test item.
*SHIFTs are at the bottom left of the platters in the left and right deck sections.
The operation is the same even if any SHIFTs are pressed.
Quitting the Test Mode
While each test item is in progress, holding down SHIFT and pressing the
rotary selector returns the unit to the test item select menu.
To quit the test mode completely, detach the USB cable to turn off the
power.
1. VERSION CHECK
This verifies the version.
The left CUE in the mixer section lights up, and then the eight pads in the
left and right deck sections and the level indicator in the mixer section
light up or go off to indicate the application version.
Any one of eight pads on the left side lights up and one's digit value of
the version number is indicated. The value of the second decimal place is
indicated by the level indicator and the value of the third decimal place is
indicated by the eight pads on the right side
When the version is 1.09, the pads light up as shown below.
fig.test1.eps
* 0 is indicated by no lighting and 9 is indicated by all lighting of 8 pads or LEDs.
1. Press START/STOP.
The center CUE in the mixer section lights up, and then the eight pads in
the left and right deck sections and the level indicator in the mixer section
light up or go off to indicate the updater version.
2. Press START/STOP.
The right CUE in the mixer section lights up, and then the eight pads in
the left and right deck sections and the level indicator in the mixer section
light up or go off to indicate the loader version.
3. Press START/STOP to advance to the next test item.
2. DEVICE CHECK
This automatically tests various devices.
If the results are OK, the corresponding LEDs of the level indicator light
up, and execution automatically advances to the next test item. If the
results are not OK, the corresponding LEDs of the level indicator flash.
3. MIDI OUT CHECK
This verifies the operation of the MIDI OUT.
* Before entering this test item, connect the MIDI device to the MIDI OUT
connector.
1. Verify that the MIDI device receives the MIDI signal.
2. Detach the MIDI device.
3. Press START/STOP to advance to the next test item.
4. ENCODER CHECK
This verifies the operation of the encoder.
START/STOP lights up.
1. Turn the rotary selector (the BACK knob) in the browser section
clockwise 2 laps (48 clicks).
When the knob has been turned 48 clicks, START/STOP flashes.
2. In the same way, turn the knob counterclockwise 2 laps (48 clicks).
When the knob has been turned 48 clicks, START/STOP lights up.
3. Press the rotary selector (the BACK knob) to advance to the next test item.
5. SW/LED CHECK
This verifies the operations of LED-equipped switches.
Press the lighted button in sequence.
* Press HOT CUE, LOOP, SEQUENCER and SAMPLER in the left and right
deck sections twice.
When all buttons have been pressed, execution automatically advances to
the next test item.
6. LED CHECK
This verifies the illumination of the level indicator.
START/STOP flashes and the upper left LEDs of the level indicator light
up red.
1. Press START/STOP.
The LEDs of the level indicator light up and go off in sequence as shown
in the figure below.
* Verify that each LED lights up correctly by visual checking.
* The uppermost LEDs of the level indicator light up red, the LEDs of the second
and third rows light up yellow and the LEDs of the 4-6th rows light up green.
fig.test6.eps
When the LEDs of the level indicator light up correctly, execution
automatically advances to the next test item.
IN OUT EXIT ON/OFF IN OUT EXIT ON/OFF
1234
5667
8 9 10 11
12 13 14
Left Pad Right Pad
1234
5678
1
13
57
2
4
6
8
234
5678
Left Pad Right Pad
Level Indicator Device
1SDRAM
2SUB-CPU
3USB(PC)
12
3
1
2
3
4
5
6
7
8
9
10
11
12

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Oct. 2017 DJ-202
7. AD 1 (RVR)
This verifies the operations of the rotary volumes.
The lowermost LEDs (2) of the level indicator light up green.
As shown in the figure, turn the knobs from minimum to maximum in
sequence of numbers and an arrow. Turn the knobs with a center notch
to minimum, the center notch, maximum and then the center notch in
sequence.
fig.test7.eps
In unison with the operation of the knob, the illumination of the level
indicator changes. When the knob is at the minimum position, the
lowermost LEDs (2) light up. When the knob is at the center notch
position, the LEDs (6) in lower half light up. When the knob is at the
maximum position, all LEDs light up.
When the minimum and maximum values are detected, all LEDs of the
level indicator light up and execution automatically advances to the next
knob.
* When the knobs with a center notch are tested, execution does not advance to the
next knob until the minimum, maximum and the center notch position are
detected and the knob is returned to the center notch position.
* When the wrong knob is turned, the LEDs of the level indicator are not changed
by turning the knob. In this case, turn the correct knob to continue the
inspection.
When all rotary volumes have been verified to work correctly, execution
automatically advances to the next item.
8. AD 2 (SVR)
This verifies the operations of the slide volumes.
The lowermost LEDs (2) of the level indicator light up green.
1. Move the slide knob at the upper right in the left deck section to +, 0, -
and 0in sequence.
In unison with the operation of the knob, the illumination of the level
indicator changes. When the knob is at the +position, the lowermost
LEDs (2) light up. When the knob is at the 0position, the LEDs (6) in
lower half light up. When the knob is at the -position, all LEDs light up.
When the +, -and 0positions are detected and the knob is returned to the
0position, execution automatically advances to the next knob.
2. In the same way, move the slide knob at the upper right of the right deck
section to +, 0, -and 0in sequence.
When the +, -and 0positions are detected and the knob is returned to the
0position, execution automatically advances to the next knob.
3. Move the left slide knob 1in the mixer section from the lower end to the
upper end.
All LEDs of the level indicator light up.
4. Move the right slide knob 2in the mixer section from the lower end to the
upper end.
All LEDs of the level indicator light up.
5. Move the hithermost cross fader knob in the mixer section from left to
right.
When all slide knobs have been verified to work correctly, execution
automatically advances to the next item.
9. PLATTER
This verifies the operation of the platters.
1. Touch the platter in the left deck section.
START/STOP lights up.
2. Release your fingers from the platter.
START/STOP goes off.
3. Touch the platter again.
START/STOP lights up.
4. With touching the platter, turn it clockwise about 2 laps.
START/STOP flashes.
5. Release your fingers from the platter.
6. Touch the platter again.
START/STOP lights up.
7. With touching the platter, turn it counterclockwise about 2 laps.
START/STOP goes off.
8. Carry out steps 1through 7in the same way for the platter in the right
deck section.
When the left and right platters have been verified to work correctly,
execution automatically advances to the next test item.
10. PHONES/MASTER OUT
This verifies the signals output from the PHONES and MASTER OUT
jacks.
START/STOP flashes.
1. Connect the oscilloscope to the PHONES jack, then verify that signals like
the following are output.
PHONES L: 200 Hz sine wave at 6.0 Vpp±1.0 Vpp
PHONES R: 400 Hz sine wave at 6.0 Vpp±1.0 Vpp
2. Press START/STOP.
3. Change the connection of the oscilloscope to the MASTER OUT jacks and
verify that signals like the following are output.
MASTER OUT L: 200 Hz sine wave at 6.0 Vpp±1.0 Vpp
MASTER OUT R: 400 Hz sine wave at 6.0 Vpp±1.0 Vpp
4. Detach the oscilloscope.
5. Press START/STOP to advance to the next test item.
11. MIC IN
This verifies the operations of the MIC IN jack.
1. Connect the MASTER OUT L jack to the MIC IN jack using an audio cable.
2. Set the MIC SENS knob to MAX.
3. Connect the oscilloscope to the PHONES jack, then verify that signal like
the following is output.
PHONES L: 200 Hz sine wave at 3.0 Vpp±2.0 Vpp
4. Turn the MIC SENS knob and verify that the output value changes.
5. Detach the audio cable and the oscilloscope.
When the audio cable is disconnected, execution automatically advances
to the next test item.
31 2

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Oct. 2017 DJ-202
12. MUTE
This verifies muting operation.
START/STOP flashes.
1. Connect the headphones to the PHONES jack.
Audio signal is played back.
* The volume level cannot be adjusted.
2. Verify that audio is muted while the center CUE in the mixer section is
depressed.
3. Verify that the mute is canceled when the CUE is released.
4. Connect the amp-equipped monitor speaker to the MASTER OUT jack.
Audio signal is played back.
5. Verify that audio is muted while the center CUE in the mixer section is
depressed.
6. Verify that the mute is canceled when the CUE is released.
7. Press START/STOP to advance to the next test item.
13. NOISE
This performs measurement of residual noise.
START/STOP flashes.
1. Connect the noise meter to the following jacks and verify the noise levels.
PHONES L/R: -70 dBm or less (DIN-Audio)
MASTER OUT L/R: -70 dBm or less (DIN-Audio)
2. Press START/STOP to advance to the next test item.
14. FACTORY RESET
This performs a factory reset.
START/STOP flashes.
1. Press START/STOP.
START/STOP flashes rapidly and the factory reset is executed.
When the factory reset has finished, all buttons and pads light up.
2. Detach the USB cable to turn off the power.

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Oct. 2017 DJ-202
Circuit Board (Jack, Phones, Sensor Board)
fig.b-jack-1-202.eps