Technics SLP 10 Service Manual

Page 2

CONTENTS

/ Page\
1. Check of basic operation before adjustment .............................. 1
2. Adjustment of actuator balance ....................................... 2
3. Offset adjustment of actuator balance .................................. 3
4. Adjustment of optical servo reference voltage ............................ 3
5. Adjustment of spindle motor reference voltage ........................... 4
6. Temporary adjustment of tracking offset ............................... 4
7. Temporary adjustment of focus offset .................................. 4
8. Adjustment of rough servo reference voltage ............................. 5
9. Balance adjustment of tracking error signal . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

10. Gain adjustment of tracking error signal ................................. 6
11. Primary adjustment of focus error signal balance (Best eye I) ................ 7
12. Adjustment of rough servo .......................................... 8
13. Adjustment of CLV servo ........................................... 8
14. Regular adjustment of focus offset ............................... 9
15. Adjustment of focus gain ..................................... 10
16. Adjustmentoftrackinggain.....................................10
17. Adjustment of jump pulse ........................................... 11
18. Adjustment of traverse gain and offset ............................... . 12
19. Offsetadjustmentincaseofdrop-out.......... 13
20. Secondary adjustment of focus error signal balance (Best eye) ............. 14
21. AdjustmentofPLLfreerun.......................................15
22. Adjustment of PLL reference voltage ................................ 16
23. Check of playback operation after adjustment ........ , . . . . . . . . . . . . . . . 16
y /

1. Check of basic operation before adjustment

Check to see that the conditions below are satisfied when the power switch is turned ON before
adjustment. Otherwise, the system can not be adjusted properly.

(1) The display should be as shown in Fig. 1.

(2) The STOP, CLEAR, LED should be lit.

(3) Pu position display LED should be lit at the innermost periphery.

(4) The open/close botton should work to open/close the door.

(5) When a disc is inserted with the door opened, the door should close automatically. (Auto

loading)

(6) After disc loading, the disc should rotate.

. . f .
10 20 30 40 so so 70 80 Equrpment orAdjustments

'-1 )- '- L-J - l-1 L-' |-1 1) Digital Volt Meter 0.001 - 50V (AC/DC)
2) Dual Oscilloscope more than 30MHz
f1 , n nn 3) Standard Test Disc
Irack U Time U LILJ 4) Eccentric detection'Jig (SZZP1012F)
5) Capacitors
10qu ECEA1CN10 (For Item14)
Fig. 1. Display section 4700pF ECQM1H473 (For Item 16)
0.15uF ECCD1H154 (For Item 18)
6) Audio Oscillator
Perform all adjustments after the optical
P.U. deck has been replaced or removed.