JVC KW-ADV793J Service Manual page 19

4.6 Service mode
REW Button
[STANDBY/ON ATTENUATOR] [DISP] [VOL]
4.6.1 Service mode 1 (Indication of a service mode 1 is nothing.)
Keep this state more 2 seconds
while continuing pressing the
[STANDBY/ON ATTENUATOR] button
and [OPEN] button sequentially.
Screen indication
NO EJECT?
EMERGENCY EJECT?
UP Button
TOUCH PANEL
DOWN Button
[Back]
*1 Exchanging it operate a menu of a service mode with the [UP] button
*2 and [DOWN] button. Operate choice of a menu with a [ENTER] button.
*1 : When an [ENTER] button is pushed in NO EJECT indication, it is set
by an EJECT prohibition mode.
When an [ENTER] button is pushed in EJECT OK indication, it is set
by a normal mode.
*2 : Forced EJECT movement
A screen becomes normal indication after an [ENTER] button was pushed.
ENTER
[Exit]
[MENU TP/TY] [OPEN]
FF Button
(No.MA473<Rev.002>)1-19