Dvd Adjustment - Pioneer avic-d1 Service Manual

5

6.2 DVD ADJUSTMENT

1) Precautions
This product uses 5V and 3.3V as standard voltages.
The electrical potential that is the reference for signals,
is not GND, but VREF
.
During product adjustments, if the reference voltage is
mistakenly taken as GND,
made, not only it
accurate
would r
strong impact on the pick up. The following precaution-
ary measures should be strictly adhered to, in order to
The reference voltage and
when using the minus probe of a
When an is being used special care should
be sure
to the
to GND. Further, since the body frame of most mea-
surement have the same
surement device should be set to floating ground.
5
6
2.2V) and VHALF
a grounding contact is
to measure the
also the
in the of a
should not be confused
device.
the reference is not
of ch1 (on the minus side),
as
6
7
If the r voltage is
take, the regulator OFF i
F.
• Remove the filters and wires used for measurements
• After the power supply is turned on,
adjustment and measurement are promptly
done.
•
will not take any protective
special
mechanical or
product when taking measurements in the test mode.
• the EJECT key is pressed to eject the disk,
no other
pressed until the disk eject action has
ed.
• Press the EJECT key only after the disk has stopped
.
• If the product hangs up turn the power OFF immedi-
ately.
• Laser didoes may be damaged, if the volume switch for
-
Attention)
• Test mode starting procedure
Please select "MS3 check" to start test mode.
• Test mode stopping procedure
ACC and Backup OFF.
AVIC-D1/UC
7
8
to GND by mis-
, or turn the
.
ON the
For reason,
be to m
shock could be applied to the
,
complet-
8
A
e
no
B
be
C
D
E
F
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