Sony CDP-101 - Section 3: Adjustments; Mechanism Adjustments Overview; Optical Pick-up Position Adjustment

“ CDP-101
3-1. MECHANISM ADJUSTMENTS
Optical Pick-up Position Adjustment
This adjustment determines the position when the
i ; optical block is at its innermost position on the disc,
It is done so that the optical block can read the infor-
mation recorded in the TOC (Table of Contents) on
the disc lead-in track.
S908
limit switch
Display increases when
turned counterclockwise.
(Optical block moves
toward the disc outer
circumference.)
Perform this adjustment after adjusting so that
clearance (A) is approximately 2.6 mm when the ad-
justment screw is removed. :
1. Turn POWER switch on and insert disc (YEDS-1).
2. Press >PLAY button and adjust the adjustment
screw so that the display window reading is as
shown in Figure A.
i The timer counter decreases approximately 10—20
H seconds with one counterclockwise turn of the
adjustment screw.
When turning the adjustment screw, press the
OPEN/CLOSE button to reset the microcomputers
(IC101, 102, 103).- After this, press >PLAY
button, read display window and perform adjust-
ment again.
Display decreases when turned
clockwise. (Optical block moves
toward the disc inner circumference.)
SECTION 3
ADJUSTMENTS
3. Press OPEN/CLOSE button, and after the LED on
the OPEN/CLOSE button lights up, press > PLAY
button.
Confirm that the display window reading is as
shown in Figure A.
This can also be confirmed by displaying the re-
maining time by pressing LAP/REMAINING TIME
button,
. Repeat step 3 about ten times. If there is even one
variation from the figure, repeat steps 2-3.
. Press >PLAY button to obtain PLAY mode. Press
Auto Selection ( P| ) button and Manual Search
(>>>) button so that the outermost circum-
ference is played. Next press RESET button.
. Confirm that play begins when >PLAY button is
pressed. If it does not, the optical block and OP
base are touching, so push the optical block motor
worm gear by hand in the direction of the arrow,
as shown in Figure B, and rotate it 1-2 times.
Turn the adjustment screw clockwise one rotation,
and repeat steps 2-6.
1. SCAN Indicator lights up.
3. SCAN Indicator goes out.
display window 2. Timer Counter indicates 9. 0c
—
oa - G88
TRACK NO. MINUTE SECOND
DISC SET
Fig. A
Rotate worm gear 1—2 turns
-by hand in the direction of
the arrow.
gear (C), (D)
optical sled motor a