Sony scd xe 680 service manual

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3 SCD-XE680 (2) SACD (single layer) 1. Sled reverse move (sled in) 2. Disc detect 3. IC setting for SACD 4. Servo error signal offset auto adjustment 5. Spindle kick for LD on 6. LD on 7. Focus search 8. Focus servo on 9. Spindle kick 10. Spindle servo on 11. E-F balance auto adjustment 12. Tracking & sled servo on 13. Focus bias auto adjustment 14. Focus servo gain auto adjustment 15. Tracking servo gain auto adjustment 16. Jump to lead-in area 17. Read TOC 18. Stop (3) SACD (dual layer) 1. Sled reverse move (sled in) 2. Disc detect 3. IC setting for SACD 4. Servo error signal offset auto adjustment 5. Spindle kick for LD on 6. LD on 7. Focus search 8. Focus servo on (layer 0) 9. Spindle kick 10. Spindle servo on 11. E-F balance auto adjustment (layer 0) 12. Tracking & sled servo on (layer 0) 13. Focus bias auto adjustment (layer 0) 14. Focus servo gain auto adjustment (layer 0) 15. Tracking servo gain auto adjustment (layer 0) 16. Jump to lead-in area 17. Read TOC 18. Focus jump (layer 0tlayer 1) 19. E-F balance auto adjustment (layer 1) 20. Tracking & sled servo on (layer 1) 21. Focus bias auto adjustment (layer 1) 22. Focus servo gain auto adjustment (layer 1) 23. Tracking servo gain auto adjustment (layer 1) 24. Focus Jump (layer 1tlayer 0) 25. Stop SECTION 1 SERVICING NOTES The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emis- sion, observe from more than 30 cm away from the objective lens. CLEANING OF OPTICAL PICK-UP LENS In cleaning the lens of optical pick-up, use the air blower. Never use a cotton swab for cleaning the lens of optical pick-up, which otherwise causes a trouble. RESETTING OPERATION AT POWER ON If the power is turned on with a disc loaded in the set, a sequence of operation as shown below will be performed. (The operation varies depending on the type of disc) Condition: continue mode (1) CD 1. Sled reverse move (sled in) 2. Disc detect 3. IC setting for CD 4. Servo error signal offset auto adjustment 5. Spindle kick for LD on 6. LD on 7. Focus search 8. Focus servo on 9. Spindle kick 10. Spindle servo on 11. E-F balance auto adjustment 12. Tracking & sled servo on 13. Focus bias auto adjustment 14. Focus servo gain auto adjustment 15. Tracking servo gain auto adjustment 16. Jump to lead-in area 17. Read TOC 18. Stop NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT