Purchase 8-32-speed CD-ROM, either in the company selling spare parts to old computers, either by advertisement in a newspaper.
If the purchase had any doubts about the possibility of Autonomous operation of the selected instance CD-ROM, then develop them. Ask the seller when you check disable on the rear wall all connectors, except power supply, then fit to bring a music CD through headphones (the Jack for them on the front) listen to your “compact”. If the drive is OK, the headphones should sound like music.
Be careful, as parts, pre-owned, exchanged or returned, usually are not subject. Even better, if the test purchase is to take part friend an expert in computer peripherals.
To connect the CD-ROM will not make any difficulties even for a person with no experience of operation of computer equipment. Most importantly — care. In fact, you should be interested in only two connectors: Power and analog Audio. The names may differ slightly, however, the location of connectors and contacts remains unchanged (Fig.1).
Power connector is designed to connect power. In order to reduce the cost of construction can restrict the purchase to him mate. However, in the free market it is rare, but almost always have professionals repair companies, to contact them will help. If you purchase the connector will fail you, gently removing the metal housing, solder to the petals of the PCB designed for the Power connector, the corresponding wire of the power supply.
Connector Audio analog, is capable of audio output, you will need a mate with a cord. Get it at computer stores and firms, which sell a kit called “cord CD-ROM — sound card”, which have, however, a bit modified. You should remove the special connector to connect to the sound card, but instead set a standard — for your provided by audio complex.
To power the drive, you can use any stable source of two voltages: +5 and +12 V. it is Quite acceptable and improvised a network adapter with a step-down transformer T1, rectifier bridge, semiconductor diodes VD1—VD4, capacitors C1—C5, analog chips-stabilizer DA1 and DA2 (Fig.2).
Installation of the adapter from the author mounted. Stabilizers (they can be domestic production — КР142Е-Н5А instead of the 7805 instead of 7812 and КР142ЕН8Б) are installed on standard radiators. As semiconductor diodes VD1—VD2 acceptable KD202, KD213, КД226 with any alphabetic index. Transformer with secondary winding 13 to 17, is designed for the current of 3-4 A. the filter Capacitors are any of able to work in DC and ripple current ratings are specified on the diagram.
Properly selected and connected in accordance with the above recommendations the CD-ROM will work as CD-player at once, without any preliminary debugging.
A. UVAROV, Belgorod