Roland DS-90A Service Notes
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Roland DS-90A Service Notes

Bi-amp monitor
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Table of Contents

See also: Owner's Manual
DS-90/90A
DS-90/90A
BI-AMP MONITOR

TABLE OF CONTENTS

SPECIFICATIONS ....................................................................................
LOCATION OF CONTROLS.....................................................................
EXPLODED VIEW ....................................................................................
BLOCK DIAGRAM ....................................................................................
PARTS LIST .............................................................................................
CIRCUIT BOARD (DA BOARD) ...............................................................
CIRCUIT DIAGRAM (DA BOARD) ...........................................................
CIRCUIT BOARD (ANALOG SHEET) ......................................................
CIRCUIT DIAGRAM (ANALOG SHEET) .................................................
CIRCUIT DIAGRAM (ANALOG SHEET) 1/4 ............................................
CIRCUIT DIAGRAM (ANALOG SHEET) 2/4 ............................................
CIRCUIT DIAGRAM (ANALOG SHEET) 3/4 ............................................
CIRCUIT DIAGRAM (ANALOG SHEET) 4/4 ............................................
INFOMATION ...........................................................................................
Copyright © 2000 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.
17059965
SERVICE NOTES
First Edition
Issued by RJA
Page
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........................................................................................................... 8
......................................................................................................... 10
......................................................................................................... 11
......................................................................................................... 12
......................................................................................................... 13
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Printed in Japan AA00 (DP)

SPECIFICATIONS

G System
G Indicators
2 Way Bi-Amplified Monitor
POWER
G Enclosure
DIGITAL IN
Bass-reflex type
G Connectors
G Cabinet
ANALOG INPUT(XLR/TRS
3/4" MDF, Baffle: 1" MDF
PHONE, Balanced/Unbalanced)
DIGITAL INPUT (Optical)
G LF Driver
DIGITAL INPUT (Coaxial)
160 mm (6-1/2") Foamed
DIGITAL THRU OUT (Coax-
polypropylene cone type, mag-
ial)
netically shielded
G Power Supply
G HF Driver
AC117 V, AC230 V or AC240 V
25 mm (1") soft dome type,
G Power Consumption
magnetically shielded
80 W
G Frequency Response
G Dimensions
48 Hz to 20 kHz (+/-3 dB)
G Crossover Frequency
228.6 (W) x 330.2 (D) x 371.5
2.6 kHz (active fourth order)
(H) mm
9 (W) x 13 (D) x 14-5/8 (H)
G LF Amplifier Power
inches
60 W
*DS-90A
228.6 (W) x 381.0 (D) x 371.5
G HF Amplifier Power
(H) mm
30 W
9 (W) x 15 (D) x 14-5/8 (H)
inches
--- Analog in ------------------------
G Weight
G Input Sensitivity
*DS-90
0 dBu (0.775 Vrms)
13.5 kg / 29 lbs. 13 oz.
G Input Impedance
*DS-90A
15 kg / 33 lbs. 2 oz.
20k ohm (Balanced/Unbal-
anced)
G Accessories
*DS-90
--- Digital in -------------------------
Owner's Manual English
G Format
(17055161)
Conformity with S/P DIF
*DS-90A
Owner's Manual English
G Sample Rate
(17055213)
25 k Hz to 55 k Hz (de-empha-
sis: automatic detection of ON/
AC Cord 117 V (G3497134)
OFF)
AC Cord 230 VD (G3497135)
AC Cord 230 VE (G3497136)
G D/A Converter
AC Cord 240 VA (G3497137)
24 bit
------------------------------------------
G Controls
INPUT LEVEL Knob
LF TRIM Knob (60 Hz, +/-3
dB)
HF TRIM Knob (10 kHz, +/-3
dB)
INPUT SELECT SW
(Analog In/Digital In)
ASSIGN SW (Right/L+R/Left)
DIGITAL INPUT SELECT SW
(Coaxial/Optical)
POWER SW
Feb. 2000
1

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Summary of Contents for Roland DS-90A

  • Page 1: Table Of Contents

    ASSIGN SW (Right/L+R/Left) DIGITAL INPUT SELECT SW Copyright © 2000 ROLAND CORPORATION (Coaxial/Optical) All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION. POWER SW 17059965 Printed in Japan AA00 (DP)

  • Page 2: Location Of Controls

    PART CODE PART NAME Q'ty 17055177 CABINET ASSY (CABIN00016) G 17055155 CABINET ASSY(CABIN00017) 17055182 BADGE SILVER LOGO "ROLAND" SML (HARDW00028) 17055183 LED SHEET "DIGITAL IN" LABEL (HARDW00030) 17055184 1'PORT TUBE (HARDW00032) 17055185 EDGE GRILL SPKR RING PAINTED PLASTIC (HARDW00034) 17055191...

  • Page 3: Exploded View

    G 17055155 Note : The cabinet structure is slightly different between the CABINET ASSY(CABIN00017) 17055182 BADGE SILVER LOGO "ROLAND" SML (HARDW00028) DS-90 and DS-90A. All other parts are indentical. 17055183 LED SHEET "DIGITAL IN" LABEL (HARDW00030) 17055184 1'PORT TUBE (HARDW00032) 17055185...

  • Page 4: Block Diagram

    DS-90/90A Feb. 2000 BLOCK DIAGRAM...

  • Page 5: Parts List

    CEMENT RESISTOR R46 on AS ( for DS-90 ) PWB ASSY F3839654 82 OHM 7W CEMENT RESISTOR R46 on AS ( for DS-90A or New AS) 01897512 DA BOARD ASSY F3829904 4.7 OHM 1/2W NON-FLAME RESISTOR R3, R6, R7, R8 on AS...
  • Page 6 BL02RN2-R62T2 FERRITE-BEAD L1 on DA 17055202 DIVIDER INSERT (CARTO00051) for SHIPPING CARTON (for DS-90A) 12449426 BLM31B601SPT FERRITE-BEAD L2-L6 on DA (for DS-90A or New DA) 17055210 OUTER SHIPPING BOX(BRN) (CARTO00051) (for DS-90A) 12449615 PT-10244-615 PULSE TRANSFORMER FL1 on DA 17055211...

  • Page 7: Circuit Board (Da Board)

    DS-90/90A Feb. 2000 CIRCUIT BOARD (DA BOARD) for DS-90 for DS-90A or NEW DA View from components side View from components side...

  • Page 8: Circuit Diagram (Da Board)

    DS-90/90A Feb. 2000 CIRCUIT DIAGRAM (DA BOARD) for DS-90 470p Optical IN 10 1/2W 1SS133 0.47 100/35 100/35 TORX178A 47/16 0.47 IC6A TL072CP IC1A IC1D SW2B AGND DGND TC74HCU04AP TC74HCU04AP 100/35 470p SSSF120500 100/35 0.01 DEM1 SDATA DEM0 DZFL + 15 100/35 DIF2 FSYNC...
  • Page 9 DS-90/90A Feb. 2000 CIRCUIT DIAGRAM (DA BOARD) for DS-90A or NEW DA C 1 0 470p R 3 5 C 2 4 C 1 8 R 2 4 10 1/2W C 1 9 Z D i 0.47 C 1 2 C 2 9 2 .

  • Page 10: Circuit Board (Analog Sheet)

    DS-90/90A Feb. 2000 CIRCUIT BOARD (ANALOG SHEET) View from components side...

  • Page 11: Circuit Diagram (Analog Sheet)

    DS-90/90A Feb. 2000 CIRCUIT DIAGRAM (ANALOG SHEET) POWER AMP BOARD 10kHz -4.0dB m 489mV 10kHz -4.0dB m 489mV (High Freq. Amp Section) 1kHz 0dBm 775mV 1kHz 0dBm 775mV +15V Non-Flame Type HEAD AMP BOARD +15V + 15 + 15 R17 33 (1/2W) +25V 2SC2240GR Analog/Digital...

  • Page 12: Circuit Diagram (Analog Sheet) 3/4

    DS-90/90A Feb. 2000 CIRCUIT DIAGRAM (ANALOG SHEET) 1/4 10kHz -4.0dBm 489mV 10kHz -4.0dBm 489mV 10kHz -4.0dBm 489mV 1kHz 0dBm 775mV 1kHz 0dBm 775mV + 15 + 15 2SC2240GR Analog/Digital R108 0.0039 IC6B SW1A 2SC2240GR R106 0.0039 COLD TL072CP 0.0039 0.0039 SSSF120500 0.47 0.22...
  • Page 13 DS-90/90A Feb. 2000 CIRCUIT DIAGRAM (ANALOG SHEET) 2/4 POWER AMP BOARD (High Freq. Amp Se ction) Non-Flame Type 10kHz -7dBm +30V ~ R17 33 (1/2W) +25V 346mV 1000/35 4.7k 4.7k 2SC3421Y 10kHz +25.5dBm 2SA1145Y 14.6V @8ohm Non-Flame Type 2SC2240GR 2SC4386 2SC2240GR + 15 4.7 (1/2W)
  • Page 14 DS-90/90A Feb. 2000 CIRCUIT DIAGRAM (ANALOG SHEET) 3/4 POWER AMP BOARD (Low Freq. Amp Section) Non-Flame Type +30V ~ 33 (1/2W) +25V 1kHz +25dBm 4.7k 1000/35 4.7k 13.8V @4ohm 1kHz +0.7dBm 2SC3421Y 2SA1145Y 840mV Non-Flame Type 4.7 (1/2W) 2SC2240GR 2SC4386 2SC2240GR 2.7k 6.8k...

  • Page 15: Circuit Diagram (Analog Sheet) 4/4

    DS-90/90A Feb. 2000 CIRCUIT DIAGRAM (ANALOG SHEET) 4/4 POWER AMP BOARD INLET BOARD (Power Sup ply Section) R46 SQP5W (7W) TER7 TER4 1N4004G FASTEN FASTEN 1N4004G +30V ~ 2200/25 TER3 TER8 IC5 NJM7805FA FASTEN FASTEN +25V + 15 CP1002 TER2 HTF-015 HTF-015 IC4 NJM7815FA...

  • Page 16: Infomation

    G The following changes were made to the early versions of the DS-90 BOARD. DA BOARD for DS-90 ANALOG SHEET for DS-90 (HEAD AMP BOARD BLOCK) Roland Use a 0.1uF monolithic ceramic capacitor to connect between Frame Gnd and A Gnd. Cut the Gnd pattern (3 places).

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Ds-90

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