ユーザーズガイド ROLAND R-4

[. . . ] • • • • © R-4 /R-4 Pro 40678234 * 4 0 6 7 8 2 3 4 0 1 * 1PD The effect of environmental vibration and sound pressure on the internal hard disk when the R-4/R-4 Pro is operating The R-4/R-4 Pro’s internal hard disk is a precision device, and needs to write data to precise locations on its high-density media. [. . . ] When doing so, leave part of the R-4/R-4 Pro uncovered, and ensure that there is a path for air to carry away the heat so that the temperature around the unit does not exceed 40 degrees C. If you cover the unit entirely, heat will be trapped in it, possibly causing a malfunction due to overheating. (*1) 110 dB or louder; such as under a railway crossing, or an automobile horn (two meters away). Detecting the effects of vibration or sound pressure Symptoms like the following will appear if the effects of vibration or sound pressure are interfering with the internal hard disk’s reading or witing. • The movement of the time counter or level meter will become much slower than normal. [. . . ] No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION. R-4 / R-4 Pro [. . . ]