BenQ E2220HD Service Manual page 14

21.5" LCD Color Monitor
4. Check the "Checksum" and the "File Start and End Address"
Checksum is ok
5. Click "Config"
6. Click "connect", if appears the dialog "Can't Entry ISP Mode", then click "Dis Con" and then click connect again.
14
BenQ E2220HD
File start and end
address is ok
Write speed setting