JVC XV-S62SL Service Manual page 16

XV-S62SL
(4) Display of current value of laser
1)Makes to test mode and initializes
2)When "CHOICE" button of remote controller is pushed twice, It is displayed on the FL display, "CHECK".
3)The display of FL display changes from "CHECK" into "LD_ON" if the "TITLE" button of remote controller
is pushed.
4)The laser is turned on if the "BACK SKIP" button (
and the current value of the laser is displayed on the FL display.
FL Display
LD_0042
5)The laser changes from CD into DVD if 3) and 4) of the above-mentioned procedures are done after
the tray is opened and closed pushing the "OPEN/CLOSE" button of the main body.
(The laser changes whenever this is done.)
If the laser current value is 64mA or less, it is roughly good. There is a possibility to which pick-up is
deteriorated, and exchange pick-up, please when there are 65mA or more laser current value.
(5) Display of jitter value
1)Makes to test mode and initializes
2)When "CHOICE" button of remote controller is pushed twice, It is displayed on the FL display, "CHECK".
3)The automatic adjustment starts when test disk (VT-501) is inserted, and "PAUSE" button of the main body
is pushed.
4)When the display of the FL display changes into "CHECK OK", the "PLAY" button of the main body is pushed.
5)The jitter value is displayed on the FL display as follows.
FL Display
JIT_3978
If the indication value is 11% or less, it can be judged by this simple checking method that the signal
read precision of the set is satisfactory.
Please do "Flap adjustment of the pick-up guide shaft" when you replace the pick-up and the spindle
motor when there are 11% or more jitter value.
Jitter value
Conversion
FL display
value(%)
3818 4.7
3828 4.8
3838 4.9
3848 5.1
3858 5.2
3868 5.3
3878 5.4
3888 5.5
3898 5.7
38A8 5.8
38b8 5.9
38c8 6.0
38d8 6.1
38E8 6.3
38F8 6.4
3918 6.6
3928 6.7
3938 6.9
3948 7.0
3958 7.1
3968 7.2
3978 7.3
3988 7.5
1-16
As for the current value of the laser, the figure displayed on the
FL display becomes a current value as it is by "mA" unit.
becomes 42mA if displayed as 42.
The jitter value is displayed by the hexadecimal number and refer
to the conversion table of following, please.
Conversion
FL display FL display
value(%)
3998 7.6 3B18
39A8 7.7 3B28
3B38
39B8 7.8
3B48
39C8 7.9
3B58
39D8 8.1
3B68
39E8 8.2
3B78
39F8 8.3
3A18 8.5 3B88
3A28 8.7 3B98
3A38 8.8 3BA8
3BB8
3A48 8.9
3BC8
3A58 9.0
3BD8
3A68 9.1
3BE8
3A78 9.3
3BF8
3A88 9.4
3A98 9.5 3C18
3AA8 9.6 3C28
3AB8 9.7 3C38
3C48
3AC8 9.9
3C58
3AD8 10.0
3C68
3AE8 10.1
3C78
3AF8 10.2
3C88
) of remote controller is pushed in the state,
Conversion Conversion
FL display
value(%) value(%)
10.5 3C98 13.3
10.6 3CA8 13.5
10.7 3CB8 13.6
10.8 3CC8 13.7
10.9 3CD8 13.8
11.1 3CE8 13.9
11.2 3CF8 14.1
11.3 3D18 14.3
11.4 3D28 14.4
11.5 3D38 14.5
11.7 3D48 14.7
11.8 3D58 14.8
11.9 3D68 14.9
12.0 3D78 15.0
12.1 3D88 15.1
12.4 3D98 15.3
12.5 3DA8 15.4
12.7 3DB8 15.5
12.7 3DC8 15.6
12.9 3DD8 15.7
13.0 3DE8 15.9
13.1 3DF8 16.0
13.2