Dear All,
I'am looking for a schematic of Yamaha CDX-596 for tuning with Burson op-Amps etc., better caps, violin laquer etc.
If you have further proposal, experience to share pls let me know.
Esp. a schematic would be helpful.
Thank in advance for your help.
Have a nice day and sucessful week !😉
I'am looking for a schematic of Yamaha CDX-596 for tuning with Burson op-Amps etc., better caps, violin laquer etc.
If you have further proposal, experience to share pls let me know.
Esp. a schematic would be helpful.
Thank in advance for your help.
Have a nice day and sucessful week !😉
I have full service manual. Do you need circuit diagram only?
Suggestions after very quick glance at the circuit diagram:
1. 16.9344MHz oscillator with dedicated low noise power supply
2. AD1854 will do much better with LM4562 if you pay a bit of attention to lowering the noise and get local decoupling at OP's done semi-decent. If you get job done properly, use LM6172. DAC is Vout type, so you could try simple differential to single end transformer solution and omit all IC’s / the whole analogue stage.
3. the chip used in power supply is mediocre dual tracking type: M5290 with bad ripple rejection - you could install your own power supply regulation to obtain much better results... even with the transformer in analogue stage, it appears you’ll still need +5.6 V DC used in an analogue stage, for spindle motor & its servo control, so analogue power supply will have to stay….
Let me know if you are happy with circuit diagram only, I can extract the page and post it here on this thread for others to use / give suggestions….
Boky
Suggestions after very quick glance at the circuit diagram:
1. 16.9344MHz oscillator with dedicated low noise power supply
2. AD1854 will do much better with LM4562 if you pay a bit of attention to lowering the noise and get local decoupling at OP's done semi-decent. If you get job done properly, use LM6172. DAC is Vout type, so you could try simple differential to single end transformer solution and omit all IC’s / the whole analogue stage.
3. the chip used in power supply is mediocre dual tracking type: M5290 with bad ripple rejection - you could install your own power supply regulation to obtain much better results... even with the transformer in analogue stage, it appears you’ll still need +5.6 V DC used in an analogue stage, for spindle motor & its servo control, so analogue power supply will have to stay….
Let me know if you are happy with circuit diagram only, I can extract the page and post it here on this thread for others to use / give suggestions….
Boky
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