Yamaha RX-Z11 Service Manual page 38

RX-Z11/DSP-Z11
4. Select the self-diagnostic function menu "28-4. All
checksum".
Check the displayed checksum is the same as the
written firmware checksum.
Checksum: xxxx
(The checksum value is found where
downloading is specified to.)
* When the displayed firmware version and checksum
are different from written firmware version and
checksum, follow the steps from 1 to 15 of operation
procedures again.
38
28.ROM VER/SUM
S-SUM.7B