Sony HCD-C770 Service Manual page 29

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6. VERSION INFORMATION
[6]
On the Test Mode Menu screen, selecting displays the ROM
version and region code.
The parenthesized hexadecimal number in version field is
checksum value of ROM.
## Version Information ##
IF con. Ver.x. xx
SYScon. Ver.x. xx (xxxx)
Model DAV-Cxxx
Region 0x
Front End Ver.x.xx
Exit: RETURN
IF con. : The version of system controller (IC901).
SYScon. : The version of DVD system processor (IC206).
Front End : The version of mechanism controller (IC301).
7. VIDEO LEVEL ADJUSTMENT
[7]
On the Test Mode Menu screen, selecting displays color bars
for video level adjustment. During display of color bars, OSD dis-
appears but the menu screen will be restored if pressing the
TURN]
key.
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