Product: Dual 622 Turntable/Record Player Service Manual. Edition January 1980.
Format: Download/PDF.
Covers/Contents:
1. Technical Data
2. Audio Connection Diagram
3. Wiring Diagram
4. Dual EDS 500 Electronic drive system,
.......Replacement of motor electronic,
.......Replacement of motor mechanic,
.......Adjustment of nominal speeds,
.......Setting 78 rpm nominal speed.
5. Stroboscope
6. Pitch control
7. Tonearm and tonearm suspension:
.......Removal of tonearm or spring housing
.......Removal of tonearm compl. with tonearm suspension
.......Adjustment of tonearm suspension
.......Fitting 1/2 inch pick-up
8. Anti-skating Control
9. Cue control // Replacement of cue control assembly.
10. Tonearm Control.
11. Muting Switch
12. Continuous play
13. Start
14. Manual Start
15. Stopping
16. Shut Off Mechanism
17. Adjustment Points:
.......Tonearm set down point
.......Shut off point
.......Tonearm does not set down
.......Vertical tonearm lift
.......Correct nominal speed obtained only at extreme setting of pitch control
.......Platter does not start
.......Tonearm does not set down correctly
.......Motor does not shut off
.......Acoustic feedback
18. Replacement with expolded views
19. Lubrication.
BONUS: Includes (1) Service Bulletins.
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