When the bottom metal plate is removed by a qualified technician, you can see the control board from the bottom as shown in the above picture. Please be reminded that such operation, if not done by a qualified technician, voids the warranty. There are 3 jumpers and 1 DIP switch as circled in white determine the characteristics of the printer besides some difference in components. Their functions are explained below:
Jumpers vs. interfaces | JP11 | JP10 | JP9 |
Serial RS232 interface | Open | ||
Serial RS422 interface | Open | ||
Parallel interface | Open | Short |
The 4 position DIP switch works as following:
Switch | ON | OFF | |
position | |||
|
| ||
1 | Determined by factory setting for printer mechanism | ||
2 | used |
| |
3 | Flash ROM exists | Without flash ROM | |
4 | Paper cutting at self test | No paper cutting at self test | |
The U11 is the font style memory for two byte characters. It is different to each other of different language character set.
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