INDEX
V2.86 (05/25/1998)
Contents:
- Table of Contents
- Chapter 1) About the Author & Copyright
- Chapter 2) Introduction
- 2.1) Compact discs and the digital audio revolution
- 2.2) Scope of this document
- 2.3) Types of problems found in CD players
- 2.4) Repair or replace?
- Chapter 3) CD Digital Audio Technology
- 3.1) General Introduction to CD Technology
- 3.2) CD information storage and playback
- 3.3) CD (disc) construction
- 3.4) And you thought driving on a narrow winding country road was tough!
- 3.5) CD optical pickup operating principles
- 3.6) Optical pickup complexity
- 3.7) For more information on CD technology
- Chapter 4) CD Player Placement, Preventive Maintenance, and CD Care
- 4.1) General CD player placement considerations
- 4.2) Preventive maintenance
- 4.3) CD lens cleaning discs
- 4.4) CD protection and handling
- 4.5) CD cleaning
- 4.6) Should I really worry about cleaning my CDs?
- 4.7) Can a dirty CD or dirty lens damage my player?
- 4.8) Rental or library CD considerations
- 4.9) Can a CD player damage CDs?
- 4.10) Repairing a scratched CD
- 4.11) Repairing top-side problems on CDs
- Chapter 5) CD Player and CDROM Drive Troubleshooting
- 5.1) SAFETY
- 5.2) Troubleshooting tips
- 5.3) Test equipment
- 5.4) Test CDs
- 5.5) Useful ways to mangle CDs
- 5.6) Getting inside a CD player or CDROM drive
- 5.7) CD enhancers
- Chapter 6) CD Player and CDROM Drive Fundamentals
- 6.1) Parts of a CD player or CDROM drive
- 6.2) Power supply
- 6.3) Electronics board
- 6.4) The optical deck
- 6.5) Typical optical decks
- 6.6) Components of the optical pickup
- 6.7) Classification of CD player problems
- 6.8) Most common CD player problems
- Chapter 7) Troubleshooting Guide
- 7.1) Instant troubleshooting chart - most common problems and likely causes
- 7.1.1) CD player is totally dead.
- 7.1.2) CD player is operational but there is no display or partial display.
- 7.1.3) CD player ignores you.
- 7.1.4) Drawer does not open or close.
- 7.1.5) Drawer operation is erratic.
- 7.1.6) Drawer does not close (or open) completely.
- 7.1.7) CD changer jams when selecting or ejecting CDs.
- 7.1.8) Spindle table loose or sticks to clamper upon eject.
- 7.1.9) Intermittent or erratic operation.
- 7.1.10) CD player or CDROM drive overheats.
- 7.1.11) Operation is poor or erratic when cold:
- 7.1.12) Disc is not recognized displaying 'disc', 'error', etc.
- 7.1.13) Disc spins in wrong direction or overspeeds and is never recognized.
- 7.1.14) Pickup attempts to reset past inner track.
- 7.1.15) Player won't let you go near it and/or use your favorite lamp.
- 7.1.16) Seek operations take too long or fail to complete.
- 7.1.17) Search, seek, or play starts correctly, then loses time or position.
- 7.1.18) Short distance skipping.
- 7.1.19) Playback gets stuck (rapid repeat).
- 7.1.20) Occasional long distance skipping or repeating.
- 7.1.21) Player gets stuck at approximately same time on multiple discs.
- 7.1.22) Various tracking problems on portions of discs:
- 7.1.23) Repetitive noise at disc rotation rate.
- 7.1.24) Audio muting, noise, or distortion.
- 7.2) General inspection, cleaning, and lubrication
- 7.3) Lubrication of CD players
- Chapter 8) General System Problems
- 8.1) CD player is totally dead
- 8.2) CD player is operational but there is no display or partial display
- 8.3) CD player ignores you
- 8.4) Drawer does not open or close
- 8.5) Drawer operation is erratic
- 8.6) Drawer does not close (or open) completely
- 8.7) CD changer jams when selecting or ejecting CDs
- 8.8) Spindle table loose or sticks to clamper upon eject
- 8.9) Intermittent or erratic operation
- 8.10) CD player or CDROM drive overheats
- 8.11) Operation is poor or erratic when cold
- Chapter 9) Startup Problems
- 9.1) What is a startup problem?
- 9.2) Startup sequence
- 9.3) Procedure for validating the startup sequence
- 9.4) Disc spins in wrong direction or overspeeds and is never recognized
- 9.5) Pickup attempts to reset past inner track
- 9.6) Player won't let you go near it and/or use your favorite lamp
- Chapter 10) Tracking (Seek and Play) Problems
- 10.1) Description of seek and play problems
- 10.2) The seek process
- 10.3) Diagnosis of erratic play
- 10.4) Seek operations take too long or fail to complete
- 10.5) Types of skipping problems
- 10.6) Short distance skipping
- 10.7) Playback gets stuck (rapid repeat)
- 10.8) Occasional long distance skipping or repeating
- 10.9) Player gets stuck at approximately same time on multiple discs
- 10.10) Various tracking problems on portions of discs
- 10.11) Repetitive noise at disc rotation rate
- 10.12) Marginal play - internal controls are not marked
- 10.13) Testing the sled for mechanical problems
- Chapter 11) Miscellaneous Problems
- 11.1) Audio problems - muting, noise, or distortion
- 11.2) Problems with the digital circuitry
- 11.3) Problems with the analog circuitry
- 11.4) Voice (almost) missing from CD playback
- 11.5) Problems with extended length discs
- 11.6) Problems reading CD-Rs
- 11.7) Problems recording CD-Rs
- 11.8) Problems with anti-skip buffers
- 11.9) Problems with CDROM drives
- 11.10) Portable CD player/CDROM drive power considerations - batteries
- 11.11) Portable CD player/CDROM drive power considerations - AC adapters
- 11.12) Boomboxes and compact stereo systems
- 11.13) CD player was dropped or got wet
- 11.14) Repairing flexible printed cables
- 11.15) CD player whine
- 11.16) Objective lens popped out
- 11.17) Testing the optical pickup
- Chapter 12) Servo Systems and CD Player Adjustments
- 12.1) Servo systems
- 12.2) Play adjustments
- 12.3) Adjustment procedure for noise or skipping
- 12.4) Repetitive noise at disc rotation frequency
- 12.5) Short distance skipping or sticking
- 12.6) General servo adjustment procedure
- 12.7) Tips for adjusting CDROM drives
- 12.8) Low laser power
- 12.9) Optical alignment
- Chapter 13) Motors and Spindles
- 13.1) Small motors in CD players
- 13.2) Problems with small PM motors
- 13.3) Testing of motors
- 13.4) Reviving a partially shorted or erratic PM motor
- 13.5) Replacement motors
- 13.6) Motor bearing problems
- 13.7) Spindle motor problems
- 13.8) Spindle motor drive modification to minimize chances of future problems
- 13.9) Spindle motor replacement
- 13.10) Unknown spindle platter height when replacing spindle motor
- 13.11) Spindle platform pulling
- 13.12) Correcting spindle platform wobble
- 13.13) Sled motor problems
- 13.14) Sled motor drivers
- Chapter 14) Notes on Specific Equipment
- 14.1) Pioneer PD/M series players/changers do not recognize discs
- 14.2) Pioneer PD/M series test mode
- 14.3) Pioneer spindle motor voltage (operating normally)
- 14.4) Pioneer spindle motor problems
- 14.5) Pioneer PD/M series servo adjustment procedure
- 14.6) Pioneer PD-7010 adjustment procedure (from Davidson)
- 14.7) Yamaha CD3 adjustment procedure (from Davidson)
- 14.8) Audio whine (not from speakers) and/or muddy sound with Sony CD players
- 14.9) Notes on Sony CDU31/33A CDROM drives.
- 14.10) Disassembling the Sony CDU31/33A CDROM drive
- 14.11) Sony Playstation (and other game machine) problems
- 14.12) Playstation appears dead
- 14.13) PSX controller unreponssive
- 14.14) General problems reading PSX discs
- 14.15) Bouncing picture on some (Zenith) TVs
- Chapter 15) Testing of Optical Pickup Assemblies
- 15.1) Introduction
- 15.2) When and why to test the pickup
- 15.3) Required tools, documentation, and test equipment
- 15.4) Precautions
- 15.5) Basic description of optical pickup
- 15.6) Identifying connections to the optical pickup
- 15.7) Testing the laser diode while in the player
- 15.8) Testing the laser diode with an external power supply
- 15.9) Laser power adjustment
- 15.10) Testing the focus and tracking actuators
- 15.11) Testing the photodiode array
- 15.12) Making the photodiode measurements
- 15.13) Sony KSS series optical pickups
- 15.14) Interchangeability of Sony KSS pickups
- 15.15) Super simple optical pickups
- Chapter 16) Items of Interest
- 16.1) CD technology basic specifications
- 16.2) Comparison of CD and DVD Specifications
- 16.3) A down-to-earth comparison of digital and analog recording
- 16.4) What is oversampling?
- 16.5) What is an anti-aliasing filter
- 16.6) How good are the digital filters in digital audio systems?
- 16.7) Instant oversampling theory
- 16.8) Is there a difference between CDs for 1X, 2X, or 25X CDROM drives?
- 16.9) CDROM drive speed - where will it end?
- 16.10) CDROM spins continuously even when not in use
- 16.11) Golden ears and technohype
- 16.12) That last little decimal point
- 16.13) Totally worthless gadgets for CD enthusiasts
- 16.14) More on CD enhancers - magic markers and anti-vibration disks
- 16.15) Why is speaker cable like spaghetti?
- 16.16) Can a CDROM disc damage a CD player?
- 16.17) Performance testing of CD players
- 16.18) Comments on test discs
- 16.19) Custom test CDs using CD-Rs
- 16.20) Controlling the pitch of a CD player
- 16.21) Converting a CD player into a CDROM drive
- 16.22) Using a CDROM drive as a stand-alone CD player
- 16.23) SP/DIF digital audio interface
- 16.24) Can I use the pickup from a CD player or CDROM drive for optical experiments?
- 16.25) Taking a CD player overseas (or vice-versa)
- 16.26) Sony portable service mode
- 16.27) Portable CD player Q & A
- 16.28) CD players in vehicles
- 16.29) Who says CDROM drives are fragile?
- 16.30) Most expensive replacement part of the century award
- 16.31) Comments on Sony KSS pickup suspension problems
- 16.32) Impress your friends with the power of your CD player
- Chapter 17) Exploration and Tinkering
- 17.1) Interesting CD player signals
- 17.2) The CD player 'eye' pattern
- 17.3) Focus and tracking drive or error signals
- 17.4) Focus, tracking, and error correction performance
- 17.5) IR detector circuit
- 17.6) Laser diode fundamentals
- 17.7) Laser diode life
- 17.8) Use of a CD, CDROM, CD-R, or DVD disc as diffraction grating
- Chapter 18) Service Information
- 18.1) Advanced CD troubleshooting
- 18.2) Web resources
- 18.3) Suggested references
- 18.4) Rubber belts in CD players
- 18.5) Interchangeability of electronic and mechanical components
- 18.6) Interchangeability of components in the optical pickup
- 18.7) Aligning the lens assembly after replacement
- 18.8) Recommended parts suppliers