DP-4090/5090/D-S300
ADJUSTMENT
INPUTOUTPUTPLAYERALIGNMENTALIGN
No.ITEMFIG.
SETTINGSSETTINGSSETTINGSPOINTSFOR
Step 1~4 are in TEST MODE
While pressing theOn the power from
UP key, turn the AC0.08 to 0.15 mW,
Apply the sensor sectionON. (Test mode)when the diffraction
1LASER POWER-of optical power meter Press the-grating is correctly(a)
on the pickup lens.PLAY/PAUSE key,aligned with the RF
then confirm that thelevel of 1.0 Vp-p or
display is "03".more.
Connect an oscilloscopePress the
Symmetry between
TRACKING ERRORTest discas follows.PLAY/PAUSE key, TE BALANCE
2upper and lower pat-
BALANCEType 4CH1 : RF (CN2 pin 1)then confirm that the VR2
terns
CH2 : TE (CN2 pin 6)display is "03".
Connect an oscilloscopePress the
FOCUS ERRORTest discas follows.PLAY/PAUSE key, FE BALANCE
3Optimum eye pattern
BALANCEType 4CH1 : RF (CN2 pin 1)then confirm that theVR1
CH2 : FE (CN2 pin 2)display is "05".
Test disc
Type 4Connect a LPF to CN2Press the
TRACKING
Apply signal ofpin 5-6 to which youPLAY/PAUSE key,Two VTVMs should
4TRACKING GAINGAIN(e)
1.2 kHz,connect an oscilloscopethen confirm that theread the same value.
VR3
50mVrms toor AC voltmeters.display is "05".
CN2 pin 5-6.
Note:
Type 4 disc : SONY YEDS-18 Test Disc or equivalent.
LPF: Around 47 k1+ 390 pF or so.
(a) Laser power(e) Tracking gain
CN2
0.08~0.15 mW
1
2
GND
3
_4
+
1.2 kHz5L.P.F.VTVM
50 mVrms6
++
7L.P.F.VTVM
Pickup
Optical power meter
9 |