Sony CDP-X222ES mods - diyAudio
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Old 23rd October 2007, 05:35 PM   #1
gorfeas is offline gorfeas  Spain
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Default Sony CDP-X222ES mods

Hi there I am a newbie in electronics diy so please be patient with my questions.
What are the rules for ordering replacement caps & opamps?

I am posting here various photos as well as a schematic i have found in order to make it for you easier to make suggestions.
Formerly i used a marantz cd43, which had a philips DAC if i recall well. Then the sound was poorer but it had more focus.
Would changing all those caps help me get back the focus?
This is what I think is "replaceable":
c527 - 47uF 50V
c627 - 47uF 50V
c201 - 100uF 63v
c214 - 220uF 16V
c211 - 220uF 16V
c209 - 470uF 16V
c204 - 1000uF 16V
c210 - 1000uF 16V
c205 - 4700uF 16V

and what about the values of the replacing capacitors? should they have the exact same value of capacitance and/or voltage?
How about PSU? it would be a good idea to make a new one I reckon. Any suggestions/designs?
here are the photos:
The player uncovered:
Click the image to open in full size.
the player's PCB:
Click the image to open in full size.
Do these also need replacing??? what should I change them for
q206 - Click the image to open in full size.
q218 - D1944/K111
Click the image to open in full size.
q210 - B1274/R1A2
Click the image to open in full size.
The PSU transformer.
Click the image to open in full size.
transformer bottom
Click the image to open in full size.
tranformer top view
Click the image to open in full size.
and last the schematic.
Thank you very much for your time and help.
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Old 24th October 2007, 01:01 PM   #2
zanash is offline zanash  United Kingdom
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the schematics show six muting transistors....if your running straight to the fixed outputs ....I would disconnect all of these.

next c627/c527 the dc blockers need to be replaced with the very best caps you can find....I'm always staggered by how much electrolytic effect the performance....I use paper in oils ...say 10uf at 400v ?
but wima film caps sound ok

replace the opamps with sockets and better opamps ...these are duals so you could try opa 2134 or opa2604 as a starting point ...but you will have to check that the ones fitted are compatable.

I'd leave the voltage regulators for later....

psu caps get the best you can and don't go more than double the original values but you can use higher temp and voltage ratings.

swap the rectifier diodes for schottky 11dq10's or better

don't forget that ic's will play a big part in the final sound and a good power cable will help too.

Sit the unit on bubble wrap ...if it makes a difference look to build a better vibration isolation.

damp the case on the nside with bitumen sheet or dynapad stuff.
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Old 24th October 2007, 02:36 PM   #3
macboy is offline macboy  Canada
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I am surprised to not see premium electrolytics in there. My Sony ES receiver is populated with only Nichicon Muse Fine Gold electrolytics, and has Nichicon Gold Tune caps on the power supply rails.
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Old 28th October 2007, 09:40 PM   #4
gorfeas is offline gorfeas  Spain
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Default part numbers?

Thank you for the recommendations zanash but let me ask you some stuff since I am a beginner and don't really understand everything...

Quote:
the schematics show six muting transistors....if your running straight to the fixed outputs ....I would disconnect all of these.
Can you be more specific? part number(Q603-Q604-Q503-Q504)? or mark the schematics? I should just unsolder these and shortcut?

Quote:
next c627/c527 the dc blockers need to be replaced with the very best caps you can find....I'm always staggered by how much electrolytic effect the performance....I use paper in oils ...say 10uf at 400v ?
but wima film caps sound ok
This I get, it is pretty straightforward.

Quote:
replace the opamps with sockets and better opamps ...these are duals so you could try opa 2134 or opa2604 as a starting point ...but you will have to check that the ones fitted are compatable.
again, part number? what exactly do you mean by compatible?

Quote:
psu caps get the best you can and don't go more than double the original values but you can use higher temp and voltage ratings.
which ones are they?


Quote:
swap the rectifier diodes for schottky 11dq10's or better
I'm afraid I lost you again...:-(


Quote:
don't forget that ic's will play a big part in the final sound and a good power cable will help too.
Ic's are descent and power cable homemade braid shielded type, it DID make a difference together with the amps power cable.

Quote:
Sit the unit on bubble wrap ...if it makes a difference look to build a better vibration isolation.
damp the case on the nside with bitumen sheet or dynapad stuff.
One good thing about the particular player is its NON flimsy box. It is very firm and reasonably heavy, however damping will be applied.
Again thanx a lot for your advice. Any further help would be really apreciated
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Old 6th November 2008, 01:27 PM   #5
gorfeas is offline gorfeas  Spain
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Default CD player dead :-(

After carefully replacing all the above caps with equally rated BGs the cd player is now dead...
It will not turn ON neither the mechanical parts move.
I have alredy checked all the internal connections they seem fine.
Also the soldering seems to be OK.
How should I proceed to find what's wrong?
I know this is a very "wide" question but please give me a starting point if you may. Thanx everyone
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Old 6th November 2008, 04:23 PM   #6
zanash is offline zanash  United Kingdom
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assuming that you did the work in easy stages and checked at each stage the machine worked ?

in which case just check the last area on which you worked ....

failing that

no power up suggests no power ...


check all flexible jumpers and connections

foil connectors need to be pushed deep into the sockets not just resting in them ..

so start with the main caps and check you have them the right way round ...

then using your multi meter check you have not broken a pcb track its easy to ..
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