Roland BOSS AD-2 Service Notes
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Roland BOSS AD-2 Service Notes

Acoustic preamp
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Nov. 2015

Table of Contents

Cautionary Notes ..............................................................2
Specifications .....................................................................3
Location of Controls .........................................................4
Location of Controls Parts List........................................5
Exploded View ..................................................................6
Exploded View Parts List.................................................7
Important Notes on Assembly ........................................7
Parts List .............................................................................8
Copyright © 2015 Roland Corporation
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of Roland Corporation.
Verifying the Version......................................................10
Data Backup and Restore Operations ..........................10
Performing a Factory Reset............................................10
Updating the System ......................................................10
Test Mode .........................................................................10
Circuit Diagram (Main, VR, SW Board).......................18
17057070E0
SERVICE NOTES
Issued by RJA
AD-2
CC-OKN

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  • Page 1: Table Of Contents

    Circuit Diagram (Main, Input, LED Board)....16 Parts List ................8 Circuit Diagram (Main, VR, SW Board).......18 Copyright © 2015 Roland Corporation All rights reserved. No part of this publication may be reproduced in any form without the written permission of Roland Corporation.

  • Page 2: Cautionary Notes

    • 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.

  • Page 3: Specifications

    * 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. Indicator * In the interest of product improvement, the specifications and/or appearance of CHECK indicator (Serves also as battery check indicator) this unit are subject to change without prior notice.

  • Page 4: Location Of Controls

    Nov. 2015 AD-2 Location of Controls fig.panel.eps...

  • Page 5: Location Of Controls Parts List

    Nov. 2015 AD-2 Location of Controls Parts List Part Code Part Name Description Q’ty 5100007869 R-KNOB INDEX G2477526R1 5100006351 POTENTIOMETER(F3229202R0) RD901F-40-15FW-B50K-00DQ7 40128923 HEX NUT M7 H5039521R0 04238745 R-KNOB INDEX 5100054565 ROTARY POTENTIOMETER RD901F-40-125FW-B50K-00D94A 40128923 HEX NUT M7 H5039521R0 5100053031 DC JACK KM02018ASBM1P 05015956 L-7104SRT (F5229820R0)

  • Page 6: Exploded View

    Nov. 2015 AD-2 Exploded View fig.bunkai.eps...

  • Page 7: Exploded View Parts List

    Nov. 2015 AD-2 Exploded View Parts List Part Code Part Name Description Q’ty 5100007869 R-KNOB INDEX G2477526R1 04238745 R-KNOB INDEX 40128923 HEX NUT M7 H5039521R0 05015956 L-7104SRT (F5229820R0) 5100008294 PEDAL PLATE (22357304R0) 5100053362 PEDAL 5100008092 PLAIN WASHER 3X6X0.5 RESIN RTC(H5039708R0) 40010267 SCREW M3X10 BINDING MACHINE FE BZC...

  • Page 8: Parts List

    • Reissuance is restricted. only listed parts for replacement. • It is carried in electronic data on the Roland web site. • It is supplied as an assembled part • The part is made to order (at current market price).
  • Page 9 Nov. 2015 AD-2 MISCELLANEOUS 5100007503 BATTERY CUSHION (22267333R0) 5100006633 BOTTOM FOOT (22357305R0) 5100007504 COIL SPRING (22177109R0) 5100039561 CAUTION SEAL PSA (FCC/EMI) VER.2 5100014487 COMPACT PSA LABEL 5100020413 EARTH TERMINAL 5100022073 INSULATING SHEET 4-5.5X5.5(751043W0R0) 5100053852 LED SPACER LEDS-8.5S 5100007505 PEDAL GUIDE BUSH (FOR REPAIR ONLY) 5100039561 CAUTION SEAL...

  • Page 10: Verifying The Version

    Nov. 2015 AD-2 Verifying the Version Inspection Items 1. Version Confirmation (p. 10) Perform verification in the Test mode. 2. Measurement of Current Consumption (p. 10) 3. Volume and AD/DA Test (p. 11) 4. Noise Test (p. 11) Data Backup and Restore 5.
  • Page 11 Nov. 2015 AD-2 10. Depress the pedal. 3. Volume and AD/DA Test The CHECK LED goes dark, and the test of the LINE OUT (tip) circuit is As shown in the figure, connect the conversion plug (RCA phono jack -> carried out automatically.
  • Page 12 Nov. 2015 AD-2 10. Verify that residual noise is -94 dBm or less (DIN-Audio). 6. LED and Battery Operation Test 11. In the same way, connect the noise meter to the ring of the LINE OUT jack Insert a battery into the unit, make the connections as shown in the figure, (stereo).
  • Page 13 Nov. 2015 AD-2...

  • Page 14: Circuit Board (Main, Vr, Input, Sw, Led Board)

    Nov. 2015 AD-2 Circuit Board (Main, VR, Input, SW, LED Board) fig.b-main-1.eps...
  • Page 15 Nov. 2015 AD-2 fig.b-main-2.eps...

  • Page 16: Circuit Diagram (Main, Input, Led Board)

    Nov. 2015 AD-2 Circuit Diagram (Main, Input, LED Board) fig.d-main-1.eps@L AD-2 circuit TP33 TP37 MAIN BOARD[1/4] TP36 ANALOG / POWER 0.5% ASSY No. 75D113M0R0 2SC4738-GR PWB No. F2927166R0 00(1/4) 10pF 4.7k 0.5% 1SS362FV CODEC-VCC INPUT BOARD TP29 [3/4] TP87 TP88 ITP1 WHITE WHTTE...
  • Page 17 Nov. 2015 AD-2 fig.d-main-1.eps@R CH-1 JACK BOARD Part No.22927687R0 (OUTPUT BOARD) 2SK879-Y 4.7uF 4.7uF PVCC TP25 2SC4738-GR OUTPUT (MONO) 470k 470k 470k WHITE CH-1-TP7 10uF 100M TP95 1SS387 2012 FETSW-BYPASS TP96 TP99 100k 220pF HTJ-064-12DMP BYPASS-MUTE 0.027uF LINE OUT (TRS) DTC114TUAT106 YELLOW CH-1-TP5...

  • Page 18: Circuit Diagram (Main, Vr, Sw Board)

    Nov. 2015 AD-2 Circuit Diagram (Main, VR, SW Board) fig.d-main-2.eps@L TC7W04FK TC7W04FK RESET TP110 TC7W04FK RST-DCDC E2 E2 TP109 D+3.3 0.1uF M24512-RMN6TP 0.1uF TC7W04FK VR BOARD[2/4] LED1 L-7104SRT VR+3.3 RIBBON CABLE D+3.3 8X112-P2.0 CHECK C101 10uF 2012 VR-AMBIENCE AMBIENCE VR-NOTCH RD901F-40-15FW-B50K-00DQ7 VR-RESONANCE C201...
  • Page 19 Nov. 2015 AD-2 fig.d-main-2.eps@R D+3.3 10uF 2012 D+1.5 UnPop 0.1uF A2001WV2-6P 0.1uF 0.1uF 0.1uF 0.1uF 10uF 2012 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF D+3.3 0.1uF 0.1uF 0.1uF 0.1uF BYPASS-MUTE DSP-MUTE TP69 TP68 TP70 TP71 D+3.3 TP72 CODEC-PDN RED-LED 10uF...

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