JVC FS-P550 Service Manual page 27

4.2 DVD TEST MODE
Insert the power cord in an outlet while pressing
the "DVD/CD" and "RHYTHM AX" keys on the
main unit simultaneously.
FL indication
Press the "3D PHONIC" key on the main unit.
FL indication
Press the "F.SKIP" key on the main unit
or remote controller more than 2 seconds.
FL indication
Press the "MENU" key on the remote controller.
FL indication
(For Example) " DK= 4EC1 "
T xxy vw
T xxy vw
T xxy v
T xxy 33
DEVICE KEY CHECKSUM DISPLAY
4EC1=check sum
1
The initialization state from DVD-MICON
"3" : FULL initialization end
"0" : NORMAL initialization end
"Blank" : Initialization un-ending
The study state from DVD-MICON
"3" : DVD Study un-completing, CD Study un-completing
"2" : DVD Study completing, CD Study un-completing
"1" : DVD Study un-completing, CD Study completing
"0" : DVD Study completing, CD Study completing
Region number
Destination VERSION id displayed.
The display to the VERSION code is as follows.
JC / 1U / D / E / 2U / 3U / UB / UT / 4U / UY / EE / UF
EEPROM NORMAL initialization
EEPROM FULL initialization
(No.MB229)1-27