5 - 4
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 1-2 short 2-3 short Open
Serial RS422 interface 2-3 short 2-3 short Open
Parallel interface Open 1-2 short Short
The 4 position DIP switch works as following:
Switch
position ON OFF
1
2Determined by factory setting for printer mechanism
used
3Flash ROM exists Without flash ROM
4Paper 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.