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Q
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What should I do if my MS-DOS machine fails? |
| A1 | You can replace with VM7891 Operating Unit. |
Q |
What model does VM7891 operating unit support? |
| A1 | It supports VM7710A, VM7730A, VM7820 and VM7830. |
Q |
I set the 2D code function, but an alarm occurs. |
| A1 | The 2D code function is optional. Check the specifications of your machine. |
| Or, check the serial number of your machine and contact us. | |
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