Руководство по эксплуатации Roland DD-3 — Сервисная документация (EN)

DD-3(T) SERVICE NOTES

May 2002 DD-3(T) SERVICE NOTES Third Edition Issued by RJA SPECIFICATIONS.............................................................2 LOCATION OF CONTROLS,PARTS LIST ...................3 EXPLODED VIEW,PARTS LIST.....................................4 PARTS LIST........................................................................5 ADJUSTMENTS ................................................................8 CIRCUIT BOARD..............................................................9 CIRCUIT DIAGRAM......................................................10 WARNING on the board. fig.notice Copyright © 2002 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 (0800) (AS) 17059557E3 hree types of DD-3(T) with different circuitry called “DD-3”, “DD- DD-3B”. The pedals of all three types are labeled “DD-3”. new type of this model, DD-3B for identifying the old type and or convenience on service system. model name as follows. e types, only the appearance of the “DD-3” is different. Identify the the “DD-3A or DD-3B” by the shape of the adapter jack as shown in ng figure. rance of the “DD-3A” and the “DD-3B” are the same. Due to a nge, it has been changed to “DD-3B” from serial No. SO91200 of produced in August 2001).

It can be identified by the serial number. A” and “DD-3B” can also be identified by the silk-screen printing rd. rring to the service notes or ordering parts, check the model name bove process. e note is for the “DD-3B”. Refer to “DD-3A SERVICE NOTES” ) when repairing the DD-3A. Variable resistor, switch and l parts for the “DD-3A” and “DD-3B” are compatible. Refer to “DD- CE NOTES” (#17059183) when repairing the DD-3. 3A or DD-3B DD-3

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SPECIFICATIONS

May 2002 SPECIFICATIONS Options Power Supply AC Adaptor PSA-Series * 0 dBu = 0.775 Vrms DC 9 V; Dry battery (6AM6/9V) AC Adaptor (PSA-series: Option) Current Draw 45 mA to 65 mA (DC 9V) Controls Pedal Switch EFFECT LEVEL FEEDBACK DELAY TIME MODE SELECTOR Switch Indicator Check Indicator (serves also as battery check indicator) Jacks INPUT DIRECT OUTPUT MAIN OUTPUT System AC Adaptor Analog logalithmic compression and 12 bit quantizing system Delay Time 12.5 ms (MIN) to 800 ms (MAX) S (Short) 50 ms (12.5 ms to 50 ms) M (Middle) 200 ms (50 ms to 200 ms) L (Long) 800 ms (200 ms to 800 ms) 200 ms (MIN) to 800 ms (MAX) in Hold mode Hold Time Frequency Response Delay Sound:

40 Hz to 7 kHz; +1/-3 dB Direct Sound: 10 Hz to 60 kHz; +1/-3 dB -95 dBu (IHF-A, Typ.) Residual Noise Input Impedance 1 M ohm Output Load Impedance 10 k ohm or greater Dimensions 73 (W) x 129 (D) x 59 (H) mm 2-7/8 (W) x 5-1/8 (D) x 2-3/8 (H) inches Weight 450 g / 1 lb (including battery) Accessories OWNER’S MANUAL ENGLISH(#2603768702) JAPANESE(#2603768603) Dry Battery(#********); 6AM6/9V (Alkaline) Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTES,” and “Information”) 2

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LOCATION OF CONTROLS,PARTS LIST

DD-3(T) LOCATION OF CONTROLS,PARTS LIST fig.panel 3 No.

PART CODE PART NAME DESCRIPTION 1 2253753801 PSA CAUTION 253-538 2 2221740401 PANEL 3 22017993RT CASE 4 2247726200 KNOB (BLUE) 247-262 13279869 POTENTIOMETER RKO971110 50KB 5 13449105MF JACK HTJ-064-14I 6 2235730400 FOOT BASE (PEDAL MAT) 235-304 7 2202785100 BOTTOM COVER 202-851 8 2235730500 BOTTOM BASE 235-305 9 G253751603 BOTTOM CAUTION PSA FCC/CE/C-TICK/EMC G 10 13449711 AC ADAPTOR JACK HEC-0470-01-630 11 1502928100 LED (RED) L-34HDSL 12 2247726200 KNOB (BLUE) 247-262 13119308 SWITCH (ROTARY) SBM1024 (SRBM 14011 13 2247726200 KNOB (BLUE) 247-262 13289126 POTENTIOMETER RK0971110 10KA 15MM 14 F3449112 JACK (STEREO) HTJ-064-13D 15 13449140MF JACK (STEREO) HTJ-064-14D 16 22187547RT PEDAL

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EXPLODED VIEW,PARTS LIST

May 2002 EXPLODED VIEW,PARTS LIST fig.explo 10 1 1 d 2 a 9 b 8 3 7 6 c 4 5 [PARTS] 4 No. PART CODE PART NAME DESCRIPTION Q’TY 1 13129710 SWITCH (PUSH) JM-0404 1 2 2226733300 CUSHION 267-333 1 3 F3419102 BATTERY CONNECTOR 1 4 G253751603 BOTTOM CAUTION PSA FCC/CE/C-TICK/EMC GRY 1 5 2235730500 BOTTOM BASE 235-305 1 6 2202785100 BOTTOM COVER 202-851 1 7 G2167301 INSULATION SPACER 1 8 2215770201 PEDAL GUIDE BUSH 215-702 1 9 2217710900 COIL SPRING 214-109 1 10 2235730400 FOOT BASE (PEDAL MAT) 235-304 1 [SCREW] No.

PART CODE PART NAME DESCRIPTION Q’TY a 40125134 NYLON WASHER 3X6X0.5 2 b 40010267 SCREW M3X10 BINDING FE BZC 2 c 40010901 SCREW M3X6 BINDING B1 BZC 4 d H5029820 SCREW M3X10 THUMB SCREW 1 No. PART CODE PART NAME DESCRIPTION Q’TY a 40125134 NYLON WASHER 3X6X0.5 2 b 40010267 SCREW M3X10 BINDING FE BZC 2 c 40010901 SCREW M3X6 BINDING B1 BZC 4 d H5029820 SCREW M3X10 THUMB SCREW 1

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