MJ-D508
44
Screw
A
Adjustment
Hole
Ocsilloscope
b
a
470p
470p
100k
Ω
100k
Ω
CORE MAIN UNIT ASSY
SIDE A
REFO
EOUT
FOUT
Lissajous waveform
a:b = Within 3:1
Step No.
Operation Keys and Operation Method
FL Display
Status
Remarks
1
Power ON while holding the ENTER key and the PLAY
EJECT
Test mode
key depressed.
2
Insert the test disc GGF1328 (MMD-212).
LOADING
GRT AJST
Grating adjustment status
3
Press the PLAY key.
LON :
Playback is started in tracking open
LAg :
status. (The servo is closed only for
GEG :
focus and spindle.)
4
Connect an oscilloscope according to the following
GRT AJST
Lissajous waveform a:b = Within 3:1
connection diagram and loosen the screw
A
at the side
of the adjustment hole. Turn the hole with a screwdriver
until the Lissajous waveform becomes as shown in the
figure, and then tighten the screw
A
.
5
Press the STOP key.
Adjustment end
3
Grating Adjustment
Connection Diagram
Adjustment
Point
Step No.
Operation Keys and Operation Method
FL Display
Status
Remarks
1
Power ON while holding the ENTER key and the PLAY
EJECT
Test mode
key depressed.
2
Insert the test disc GGF1328 (MMD-212).
LOADING
GRT AJST
3
Press the A-B key (until AUT YOBI is displayed).
AUT YOBI
Preliminary adjustment mode
4
Preliminary adjustment starts when the PLAY key is
HAo :
pressed.
RFg :
PTG :
|
Can't ADJ.
Defective adjustment
(problem with the servo system)
COMPLETE
Adjustment end
4
Preliminary Adjustment
Summary of Contents for MJ-D508
Page 20: ...MJ D508 20 A B C D 1 2 3 4 1 2 3 4 3 4 MAIN UNIT ASSY 2 2 C E CN701 13 14 16 15 12 17 ...
Page 33: ...MJ D508 33 A B C D 5 6 7 8 5 6 7 8 Q304 POWER SUPPLY UNIT ASSY D MAIN UNIT ASSY C SIDE B ...
Page 34: ...MJ D508 34 A B C D 1 2 3 4 1 2 3 4 DISPLAY UNIT ASSY E 4 4 DISPLAY UNIT ASSY ...
Page 35: ...MJ D508 35 A B C D 5 6 7 8 5 6 7 8 C CN404 SIDE A SIDE B RNP1732 C ...
Page 67: ...MJ D508 67 ...