This is the CD Drives troubleshooting and repair tutorial for your electronic service reference. It should be work and also largely relevant for DVD/HD DVD/Blu-ray equipment.
This document was developed specifically for the troubleshooting and repair of the CD players in component stereo systems, compact stereos, boomboxes, car units and portables, as well as CDROM drives (including the Sony Playstation).
The primary differences between these types will relate to how the disc is loaded – portables usually are top loaders without a loading drawer or tray:
However, as a result of the level of miniaturization required for portables and to a lesser extent, CDROM drives, everything is tiny and most or all of the electrical components are surface mounted on both sides of an often inaccessible printed circuit board with the entire unit assembled using screws with a mind of their own and a desire to be lost.
For other types:
Download Document: CD/DVD/Bluray-Disk Drives Troubleshooting and Repair Tutorial
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i am tryig to make a good quality audio amplifire please send me a circuit diagram & component detals.