JVC KD-R491 Schematic Diagrams page 39

4.3 Service Test Mode
Pressing and holding [DISP] key, then press [] key for 7 seconds.
(Starting to press [DISP] key and [] key at the same time can not be entered into the mode)
4.3.1 Default status immediately after the mode activation
It shall be same as the normal activation.
4.3.2 Mode content
Syscon shall display the following information after entering this mode.
Display content
S R V T E S T
4.3.3 Common operation mode for only STANDBY sources
Item Operation
Syscom version
5
display
Power ON
2
duration display
Disc action
1 (*1)
duration display
Disc Eject No. of
DISP
times
Disc Eject No. of
DISP
times clear
*1 This includes all media (CD, USB, iPod, SD) action duration.
Display is released when an operation is executed.
Display content
S Y S # # – @ @
P O N T M
P O N T M
C D T M
C D T M
E J C N T
E J C N T
(No.MA665<Rev.001>)20/33
Details
## = File Number
@@@ = Syscon Version Number
@
00 to 50 are displayed in "XX".
For less than 1 hour, the display is indicated per 10
0 H X X
minutes.
00001 to 10922 are displayed in "XXXXX".
MAX=10922 (hours)
X X X X x
00 to 50 are displayed in "XX".
For less than 1 hour, the display is indicated per 10
0 H X X
minutes.
00001 to 10922 are displayed in "XXXXX".
X X X X X MAX=10922 (hours)
00001 to 99999 are displayed in "XXXXX"
X X X X X
Clear Disc Eject number of times by pressing for 2
0 0 0 0 0 seconds when it is displayed.
Details