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8. HOW TO RESET PREH KEYBOARDS
Simply resetting the keyboard may solve the majority of the most common problems
that a user can have. If a fault has occurred during the transmission of the
keyboard assignment table or the contents of the EEPROM has been modified,
there will be an error in the checksum.
Please Follow the instructions:
1. Unplug your keyboard from the Computer
Figure 2. Unplugging the keyboard from the computer
Some preh keyboards have a detachable cable on the back. The keyboard can
be unplugged by either from the back of the computer or from the back of the
keyboard
Figure 3. Unplugging the keyboard from the computer
2. Hold down keys A01 and B01. The term A corresponds to the first row on the
bottom and 01 is the column. Please see figure 4 to identify the keys on a row
and column keyboard.