Schematics Marantz CD40 please...

[Lyra]

I have bought me a Marantz CD40 in perfect order for my I2S project.
To make this player as good as possible regarding this task I could use a manual/ schematic.

Thanks
Lyra

 

[weissi]

I guess no one has it... asking for the manual for my cd50 gave no responses.... to bad... But I´m sure it´s nearly the same as a philips one with tda1541....

regards

 

[martijn]

yes,the Philips 630 layout looked near identical,IIRC.

 

[Lyra]

Don't know witch Philips that could be identical, but here is a picture of CD40. Have You seen this before?

Lyra

 

[martijn]

same PCB

 

[Guido Tent]

same PCB

For those interested, Remco Stoutjesdijk has a CDrom with a huge amount of CD player manuals available

http://www.ultranalog.com/sale/cd.html

get your copy, worth every ct......

regards

 

[guido]

Spot the differences

The other Guido

 

[Guido Tent]

Spot the differences

The other Guido

your disc is yellow !

the other other Guido.....

 

[weissi]

yes, cd50 is the same except the optional pcb for the volume controlable output....

 

[aparatusonitus]

Philips CD620 is exactly the same thing, I have one with nonos- filterless-mute trick and nothing else changed... bad sound!
Where is my solder gun...?

Regards

 

[guido]

your disc is yellow !

the other other Guido.....

NO, it's the power cable for the display pcb. It's white instead of black! Much better sound

Anyway, this particular player is scrapped some time ago. Needed the display controller to fix a CD60.

The not one and only

 

[tincanear]

Phil CD50 and SAA7220 PSU Bypassing

I have still-stock Philips CD50 (mfg date January 1990) that looks very similar inside. Same main board, plus another board mounted on right side with Variable Volume RCA outs.

I know this may not be the correct thread, but for bypassing of +5V rail on SAA7220 what would be better: Black Gate NX 33u/16v, Black Gate NX 220u/6.3v, Panasonic FC 220u, or OSCON SP series? Are OSCONs still being manufactured?

 

[weissi]

OSCONS are still in production... And they are industry accepted, don't know if this applies to Blackgate aswell ...

 

[tincanear]

weissi,

the sanyo web site show several series of oscons (SP, SG, SH, SC, SEP, etc...). which ones are best suited for this application (digital rail bypass on SAA7220 and TDA1541) ?

thanks,
Bruce

 

[weissi]

SEP - < 10µ are really sufficient (unless you plan to fit a smps into the cd player )

 

[tincanear]

One of the guido's was recommending Oscon 220uF, but what series should i use?

-Bruce