Panasonic RXDT630 - Measurement and Adjustment; Mechanical Adjustment; Best Eye (PD Balance) Adjustment; Play Operation Check After Adjustment

RX-DT630 RX-DT630
—H
MEASUREMENT
AND
ADJUSTMENT
Warning:
This
product
uses
a
laser
diode.
Refer
to
caution
statements
on
page
2
.
Caution: It is very dangerous to look at or touch the laser beam. (Laser radiation is invisible.)
een
eas
With
the
unit
turned
"ON",
laser
radiation
is
emitted
from
the
pickup
lens.
Caution
:
It
is
very
dangerous
to
look
or
touch
the
laser
beam.
(laser
radiation
is
invisible)
Avoid
exposure
to
the
laser
beam,
especially
when
performing
adjustments.
With the unit turned "on", laser radiation is emitted from the pickup lens.
Avoid
exposure
to
the
laser
beam,
especially
when
performing
adjustments.
,
.
,
P
P
y
P
eae
The
conventional
CD
drive
(Servo
Board)
requires
manual
adjustment
for
items
(1)
through
(7)
listed
below:
j
:
(1)
Best
eye
pattern
(PD
balance)
(5)
Tracking
gain
Measuring
Instruments
and
Special
Tools
|
(2)
Focus
offset
eytiaeees
anes
*
Test
discs
¢
Allen
wrench
(M2.0)
(SZZP1101C).
i.
tsetets
offset
(7)
Angle
of
elevation
1.
Playability
test
disc
(SZZP1054C)
*
Dual-beam
Oscilloscope
with
bandwidth
of
)
Ficus
gain
i
ZZP1056C
i
.
tri
=
en
=
soi
seh
er
reton
wie
x)
Meter
ae
On
the
modified
CD
drive
(Servo
Board),
a
servo
processor
IC
(IC
702:
MN66271RA)
automatically
adjusts
items
(2)
through
(6)
out
of
seven items listed above. Auto adjustment is performed when:
1) ACD is loaded or replaced, or
(1
)
MECHANICAL
ADJUSTMENT
|
2)
the
unit
is
turned
ON
with
a
CD
loaded
in
the
drive.
*The auto adjustment is reset each time the CD-drive is turned OFF.
When
the
traverse
deck
is
replaced,
making
adjustments
is
not
:
necessary.
(The
traverse
deck
ass'y
is
already
adjusted.)
¢
Preparation
Make
adjustments
to
improve
playability
if
the
traverse
deck
has
After
setting
up
the
unit
for
adjustment,
temporarily
switch
it
off,
switch
it
on
again.
not
been
replaced.
(
This
is
necessary
for
the
automatic
adjustment
procedure
with
the
CD
drive
placed
on
its
side.
)
1. Connect the oscilloscope's CH. 1 probe across TI701 (la)
(+) and (VREF) (-) on the Servo P.C.B.
Oscilloscope setting : VOLT
(RF) _ Mechanical adjustment screws
3 AW KY O
Input coupling AC. AA aiaiin nian in
. ez ie ro power ON, and play track 19 on the test disc TANI
.
Leave
the
player
in
Play
mode
,
and
place
it
as
shown
in
the
aR
<.
AON
AVA
AWAY
AV
AY
AVA)
VAVA
VAY
figure
on
the
right.
x
a
rs
SECO
RX
Yy
. Alternately
adjust the two
mechanical
adjusting screws with
the
2.0mm
allen
wrench
(SZZP1101C)
until the
RF signal
amplitude
on
the
oscilloscope
is
maximized.
(Refer
to
Fig.
2
on
page
10)
*
Maximize
the
amplitude
.
After
completing
the adjustment,
lock
the
Mechanical
Adjustment
Screw
with
lock
paint
(RZZOLO1).
Mechanical Adjustment | |[C701 4
BEST EYE
IC703
Allen wrench
(2) BEST EYE (PD BALANCE) AJUSTMENT
|
Fig.1
(SZZP1101C)
Fig.2
1. Connect the oscilloscope's CH. 1 probe across [UREZXI(RF) (+) ANN waauniniinn 04.0.9
and
[REZ
(VREF)
(-)
on
the
Servo
P.C.B.
Ni
x
iy
.2.0.D.e.
o.10
=
FUNCTION
OF
IC
TERMINALS
Oscilloscope
setting:
VOUT
ivissactasteduaesscsaess
200mV
|
|
SWEEP...vccsccessssssssee
0.5us
¢1C703
(
AN8389SE1
)
|
Input coupling.............. AC
2.
Switch
the
player
power
ON,
and
play
the
1
KHz
(track
1)
on
the
test
Function
Terminal
|
0
Function
disc
(SZZP1054C).
Name
3.
AdjustVR701
until
the
RF
signal
eye
pattern
amplitude
ismaximized.
=
=
8
[77
VT)
UOT
(Refer
to
Fig.
1
on
page
10
)
Power
Supply
613}
PVect
|
1
Power
supply
(1)
for
driver
*
Maximize
the
amplitude
VREF
input
PGND1
-
Ground
connection
(1)
for
driver
|
:
Motor
driver
(4)
input
16
|
pt
|
Oo]
Motor
driver
(1)
reverse-action
output
(3)
CHECK
OF
PLAY
OPERATION
AFTER
ADJUSTMENT
Motor
driver
(3)
input
‘16
|
oe
|
0
|
Motor
driver
(1)
forward-action
output
e
Checking
skip
Search
Ground
connection
17]
oe
|
0
|
Motor
driver
(2)
reverse-action
output
1.
Play
an
ordinary
musical
program
disc.
2.
Press
the
skip
button
to
check
for
normal
skip
search
operation
(in
both
the
forward
and
reverse
directions).
No
connection
18
|
pa
|
o
|
Motor
driver
(2)
forward-action
output
e
Checking
Manual
Search
Reset
input
19}
ps
|
oO]
Motor
driver
(3)
reverse-action
output
1.
Play
an
ordinary
musical
program
disc.
Ground
connection
(20)
ve
|
O|
Motor
driver
(3)
forward-action
output
2. Press the manual search button to check for smooth manual search operations at either low or high speed (in both the forward
and
reverse
directions).
|
Motor
driver
(2)
input
21
|
pe
fo
|
Motor
driver
(4)
reverse-action
output
¢
Checking
Playability
PC2
(power
cut)
input
22
|
Dt
|
0
|
Motor
driver
(4)
forward-action
output
1.
Play
the
0.7mm
black
dot
and
the
0.7mm
wedge
on
the
test
disc
(SZZP1054C)
and
verify
that
no
sound
skip
or
noise
occurs.
Motor
driver
(1)
input
23
PGND2
=
Ground
connection
(2)
for
driver
2.
Play
the
middle
tracks
of
the
uneven
test
disc
(SZZP1056C)
and
verify
that
no
sound
skip
or
noise
occurs.
i
@)
4 |
PC1 (power cut) input (not used, open) Power supply (2) for driver