JVC SP-PWM508, Service Manual

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1-34 (No.MB294)
SECTION 4
ADJUSTMENT
4.1 Test mode setting method
(1) Unplug the power plug.
(2) Insert power plug into outlet while pressing both "PLAY" key and "STANDBY/ON" key of the main body.
"Area code" is indicated at the upper left of display,
(3) To release test mode, press "STANDBY/ON" key of the main body.
NOTE:
Each pressing of "MENU" key of the remote controller in test mode changes the mode as follows.
4.2 Method of displaying version of firmware
(1) Set the main body at test mode.
(2) Press "MENU" key of the remote controller twice. Then, version number and alphabetical letter of the system controller and the
back end are displayed in the FL display as follows.
Becomes test mode
Checksum of device key
Mechanism check mode
TEST # -------------
-------------------------
FL Display becomes all lighting
CHECK -------------------------
: Area code
FE microcomputer learning processing condition
Version of microcomputer (Refer to "4.2 Metod of displaying version firmware".) _ ------
#
# : Rejion code
0 Normal initialize END
3 Full initialize END
after power off
0 DVD/CD finishing study
1 only CD
2 only DVD finishing study
3 DVD/CD not study
FL display
Mechanism microcomputer
System version
Sys ROM collection
Mechanism ROM collection
110_3e_0034
FL Display (Example)
PLAY key
(for test mode)
STANDBY/ON key
(for test mode)
MENU key
(switch of mode)
Back end (BE) microcomputer
3 3 4 1
ver ver ver R R
Sys Mecha BE