| 摘要 |
<p>PURPOSE:To save lavor and space required for performing maintenance checking or repairs and to decrease installment space for an electronic device by constructing such that an electronic circuit package and a power supply unit can be mounted and removed from the front of a case. CONSTITUTION:In order to get access to electronic circuit components such as an electronic circuit package 13 or a power supply unit 15 for the purpose of maintenance checking or repair if components in trouble, the electronic circuit package 13 is pulled out of a shelf 12 to the front of a case 11 while an output section 16 of the power supply unit 15 is removed from a power supply bus 18 on the front side of the case 11 and taken out to the front of the case 11. After the checking or repair as required is finished, the electronic circuit package 13 and the power supply unit 15 are reassembled from the front of the case 11. In this manner, the removal or reassembling of the electronic circuit package 13 and the power supply unit 15 can be performed only in front of the case 11 and hence more easily. Further, the space in front of the case 11 is sufficient for carrying out maintenance checking or repairs and therefore the installment space can be decreased substantially.</p> |
