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RXD-500/700
ADJUSTMENT
3. Adjustment of CD player
OUTPUT
PLAYER
ALIGNMENT
SETTING
SETTING
POINT
ALIGN FOR
Step 1~4 are in TEST MODE
TEST MODE : While pressing the (TIME DISP.) key, plug the AC power cord into the AC outlet.
On the power
from.0.05 to
Set the Senor Sec | ress the"PLAY"key
0.15mw. when the
power meter a the | ' check that the
altrasion graling is
f
display is "03".
correctly aligne
plesuplene.
with the RF level of
0.8Vp-p or more
Connect an oscillo-
TRACKING
scope as follows.
Press the "PLAY"
TE
Symmetry between
ERROR
Test disc Type 4 | CH1 : RF (CN2-1)
key. Confirm the
BALANCE | upper and lower or
BALANCE
CH2 : TE (CN2-6)
display is"03".
VR2
DC=0+25mV
GND : VC (CN2-4)
Connect an oscillo-
FOCUS
scope as follows.
Press the "PLAY"
FE
ERROR
Test disc Type 4 | CH1: RF(CN2-1)
key. Confirm that
BALANCE
|Optimum eye pattern
BALANCE
CH2 : FE(CN2-2)
the display is"05"
VR1
GND : VC (CN2-4)
Test disc Type 4 | Connect a LPF to
TRACKING
Apply signal of
CN2 pin 5-6 to
Press the "PLAY"
| TRACKING | Two VTVMs should
GAIN
1.2kHz, 50mVrms|
which connect an
key. Confirm that
GAIN
read the same
to CN2 pin
oscilloscope or AC
the displays'"05"
VR3
value.
5-6.
voltmeters.
+
Note:
Type 4disc :SONY YEDS-18 Test Disc or equivalent.
LPF : Around 47kQ + 390pF or so.
(a) Laser Power
(b) Tracking Gain Adj.
0.05~0.15 mW
CN2
|
\
)
®
GND
—
@
sz)
=
+
@t-
a
oo
1.2 kHz
LI@+—+
LPF
| * | VTVM
oD
50 mVrms
~)
©
2
ht
Pickup
=
@|
—
LP.F.
[7
VIVM
Optical power meter
(d)
RF signal : AC coupled
CH1
RF signal
"ve
"vc
CH2
TE signal
@ PF signal and TE signal in test mode (Focusing servo
@ FF signal in test mode (PLAY).
ON / Tracking servo OFF). (Disc Type 4)
@ Perform the tangential and focusing offset are focused
@ Adjust TE signal so that the waveform is symmetrical
into one point on the display. The crossing points
in relation to VC. VR 2 (TE BALANCE)
above and below the center shall also be looked clear-
ly.
15
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