Roland CPM-300 Service Notes

Apr,1999

TABLE OF CONTENTS

SPECIFICATIONS............................................................................................................................. 1
LOCATION OF CONTROLS ............................................................................................................. 2
EXPLODED VIEW ............................................................................................................................ 3
PARTS LIST .................................................................................................................................. 4~5
TEST MODE ................................................................................................................................. 6~8
BLOCK DIAGRAM ............................................................................................................................ 9
WIRING DIAGRAM ......................................................................................................................... 10
CIRCUIT DIAGRAM .................................................................................................................. 11~14
CIRCUIT BOARD ...................................................................................................................... 15~19
Copyright © © © © 1999 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permisson of
ROLAND CORPORATION.
17059963
CPM-300
Page
Printed in Japan (AA00) (CR) 1

SPECIFICATIONS

1. Mixer Section
• Frequency Responce:
20 Hz-20 kHz +1/-2 dB (Sens : min)
• Total Harmonic Distortion:
0.1 % or less (sens : min, 20 Hz-20 kHz, rated output)
• Noise Level:
(Input 150 W terminated, IHF-A Weighted typ.)
♦
Equivalent input Noise Level:
-120 dBm
♦
Residual Noise:
-89 dBm (all fader : min)
-72 dBm (master fader : max)
(all channel fader : min)
-72 dBm (master fader : max)
(all channel fader : nominal)
(all sens : min)
-49 dBm (master fader : max)
(all channel fader : nominal)
(all sens : max)
• Crosstalk:
-70 dB or less (1 kHz between channels)
-60 dB or less (1 kHz between L and R)
• Equalizer:
HIGH EQ: ±15 dB (12 kHz shelving type)
LOW EQ: ±15 dB (80 Hz shelving type)
• Digital Reverb:
Sampling Frequency: 48 kHz
Internal Signal Processing: 24 bits
2. Power Amplifier Section
• Rated Output:
100 W x 2 (Stereo, 8 W load, 1 kHz, 0.1 % or less THD)
150 W x 2 (Stereo, 4 W load, 1 kHz, 0.1 % or less THD)
• Recommended Load Impedance:
4 ohms or greater (STEREO)
• Frequency Response:
20 Hz-50 kHz (+0/-1 dB 1W/8 W)
• Total Harmonic Distortion:
0.05 % or less (Stereo, 8 W load, 1 kHz, 50 W)
• S/N Ratio:
100 dB or greater
(amp in 150 W terminated, IHF-A Weighted)
3. Others
• Power:
AC 117/230/240 V (50/60 Hz)
• Power Consumption:
150 W (AC 117/230/240 V)
• Dimensions:
375 (W) x 307 (D) x 131 (H) mm
14-13/16 (W) x 12-1/8 (D) x 5-3/16 (H) inches
• Weight:
6.0 kg / 13 lb 4 oz
• Accessories:
Owner's Manual (ENGLISH/JAPANESE G6017274)
* 0 dBm = 0.775 Vrms