| 摘要 |
PROBLEM TO BE SOLVED: To prevent a data transfer work at the time of manual operation from being forgotten when replacing a display control circuit board. SOLUTION: A display device has; a display control circuit board 11 having a memory 14 capable of storing operation parameters and a control means (microcomputer 13) for performing display control processing according to the operation parameters; a backup memory installation substrate 12 having a backup memory 16 to which the operation parameters stored in the memory 14 can be transferred and stored in order to save the operation parameters; and a warning means which gives a warning in response to detecting the state that the operation parameters are not stored in the memory 14 with the operation parameters in the backup memory 16. COPYRIGHT: (C)2006,JPO&NCIPI
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