JVC XV-N50BK Service Manual

XV-N50BK,XV-N55SL
(No.A0041)1-17
3.6 Display of current value of laser
(1) Set the main body at test mode.
(2) Press "CHOICE" key of the remote controller three times. Then, FL display is displayed "CHECK".
(3) The laser current value can be switched between the value of CD and that of DVD by pressing the following key of the remote
controller.
The number shown in the FL display shows mA of current value of laser.
The first two numbers ("25" in "2530") shows current value of laser at the time of adjustment after the latest all-initialization, 25mA
in this example.
The last two numbers ("30" in "2530") shows the present current value of laser, 30mA in this example.
The first two numbers ("25" in "2530") usually shows current value of laser at the time of shipment, so you can see how the prod-
uct has been deteriorated by comparing the first two numbers ("25" in "2530") and the last two numbers ("30" in "2530").
CD:
The laser current value of 49 mA or less is normal.
The laser current value of over 50 mA is not normal. Laser diode of the pickup has been deteriorated.
DVD:
The laser current value of 64 mA or less is normal.
The laser current value of over 65 mA is not normal. Laser diode of the pickup has been deteriorated.
To return to test mode, press "STOP" key of the main body.
3.7 Flap adjustment of the pick-up guide shaft
Please perform flap adjustment of the pick-up guide shaft in the following case:
• Just after you exchange the pick-up.
• Just after you exchange the spindle motor.
• Just after you exchange the traverse mechanism base.
NOTE:
Please perform flap adjustment of the pick-up guide shaft when you exchange the parts above and also when you remove the
parts above.
• When the reading accuracy of the signal is bad (There is a block noise in the screen, Screen stops in the outer circumference of a
disc, etc.)
00002530
FL Display (Example)
Remote controller "4" key --- Laser of CD
Remote controller "5" key --- Laser of DVD
POWER key
STOP key
(for test mode)
PLAY key
(for test mode and jitter value)
FL Display
213
546
879
010 +10
TITLE/
GROUP
TV/VIDEO
CANCELRETURN
VOL VOL +
CH
+
CH
VFPZOOM
AMP
VOL
AUDIO
3D
PHONIC
SUB TITLE ANGLE
DIMMER
REPEAT
OPEN/
CLOSE
TV4 TV5 TV6
TV7 TV8 TV9
TV-/-- TV0 MUTING
TV DVD
NEXTPREVIOUS
SELECTCLEAR
SLOW
- SLOW+
T
O
P
M
E
N
U
M
E
N
U
O
N
S
C
R
E
E
N
C
H
O
I
C
E
ENTER
STANDBY/ON
TV DVD
PROGRESSIVE
SCAN
TV1 TV2 TV3
CHOICE key
(switch of mode)
4 key (laser of CD)
5 key (laser of DVD)
1 key (automatic adjustment)
6 key
(display of jitter value)

JVC XV-N50BK Specifications

General

Brand	JVC
Model	XV-N50BK
Category	DVD Player
Language	English