Onkyo HT-R495 Service Manual page 52

1
MAIN Checksum Verification
[ DIMMER ] + [ ON/STANDBY ] x 2 → [ ENTER ]
D
Or use service mode function. Please see this section.
Display checksum as below.
s u m M :
"xxxxxxxx" is checksum of Main MCU.
C
Make sure Checksum after firmware update
B
A
1
2
x x x x x x x x
2
3 4
3 4
5 6
Appendix
Common
5 6
D
C
B
A