Rotel's naming for service manuals in general is "Technical Manual"
I also looking for a datasheet of ZC99685P (MCU-IC for servo and control) - especially for the software description "P110" (mask programmable version).
Same MCU is in use in Naim Audio's "CDI" - go to post #3 under
https://www.diyaudio.com/community/...cd-1-cds-only-impaired-skip-operation.207813/
P.S.: troubleshooting on working CD player devices without sound (without signal both on S/P-DIF and analog out) must actually be an easy task - because only the SAA7220P and it's peripheral parts and it's supply voltages are in question.
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I am confused regarding the mentioned MCU's in the part list of service manual for CD630 on page 9-3.
There are three different versions according the service manual (go to attachment): 00R, 05R and 17R.
Each version use it's own software for the MCU
on page 9-3 is to read this:
1) Version 00R: IC 6530 - Part No 4822 209 60801 type MC68HC05C9P/SC409009
2) Version 05R: IC 6530 - Part No 4822 209 61428 type MC68HC05C9P/409010
3) Version 17R: nothing mentioned
I guess, there are various misprints:
a) instead of 409010 it should probably be called SC409010 for the MCU (Version 05R)
b) in case of used "MC68HC05C9P" there would have to be two different Pxxx numbers according the software version
c) which MCU's are used for the version 17R (maybe the ZC99702P as to see on the images under
https://www.dutchaudioclassics.nl/Philips_cd630_cdplayer/
and
https://insidehifi.blogspot.com/2013/11/philips-cd-630.html)
For answering this questions the associated service bulletin for the CD630 is necessary.
P.S.: according the images under
http://www.goldfinch-mod.eu/odtwarzacze-cd-2/marantz/marantz-cd-40/
the Marantz CD40 use as MCU the ZC99700P (not mentioned in the associated service manual, available by hifi engine)
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Can I ask you a question Tief ?
Why all this archive work?
Every time I read one of your researches, I always learn something.
Why all this archive work?
Every time I read one of your researches, I always learn something.
When the CD is rotates, I hear the magnifier hitting the disc sometimes.Supply voltage is OK.
First of all I thank you for the large amount of details you have provided us which always makes a certain impression to read and from which we also may learn something.
However, please note that my reply was intended to be a starting point that necessarily needed to be explored further (by someone who, after all, had made a rather generic request) just as you in an appreciated way have elaborated.
I think that the one of the nice things of participating to the forum is also this, namely when two pieces of information (which if both correct enough are always better than just one) come together to provide useful guidance to the member who need informations.
Also, please note that I providently said "pretty sure", not "absolutely sure"... 😉 🙂
Hi guys!
I have a Philips CD-630.
I decided to check the settings.I did laser current adjustment and focus as written in the manual.
I then measured the voltage across the 3522.I measured 1.02 volts.
For the laser current we get
1,02/18=57mA
Is this normal, not too much?
I am attaching a photo of HF too.
I have a Philips CD-630.
I decided to check the settings.I did laser current adjustment and focus as written in the manual.
I then measured the voltage across the 3522.I measured 1.02 volts.
For the laser current we get
1,02/18=57mA
Is this normal, not too much?
I am attaching a photo of HF too.
Attachments
Hello guys. Im having a bit of trouble diagnosing a CD 350, and i believe that maybe some of you came across this fault. The problem im having is as follows, the machine seems to be working fine, i can skip tracks, cds will play from end to end with no problem. But sometimes when i insert a cd and the TOC is being read, the machine will take a very long time until it gets the TOC. While its trying to get the TOC it will squeal quite a lot. It almost sounds like if its skipping. After it gets the TOC, i can just press play and the cd will be read without any issues.
This also seems quite random. But on certain cds, this fault will get worse, and on some of them i have to try multiple times until the TOC is read correctly.
Now i know that this could sound like it can be a capacitor fault, but i assure you i replaced all the capacitors for the ones with the correct values, i measured all the PSU rails and voltages, and none of them are out of spec. The griplets have been done again with the new capacitors. The faulty cables have been replaced. The laser current has been set to 47-50mv with a technics T-016 calibration cd. Everything that normally fails has been looked over.
I even tried with another known good l272m and 4560 opamps on the servo board, but the fault still continues. Im really lost on how to continue. The only thing that comes to mind is maybe a software bug on the Motorola XC89507P cpu. The servo CPU is the MAB 8441P with the T012 rom. I will try to get a T014 cpu from another CD 350 and i will try to see if there is any difference.
Any suggestion is very appreciated.
This also seems quite random. But on certain cds, this fault will get worse, and on some of them i have to try multiple times until the TOC is read correctly.
Now i know that this could sound like it can be a capacitor fault, but i assure you i replaced all the capacitors for the ones with the correct values, i measured all the PSU rails and voltages, and none of them are out of spec. The griplets have been done again with the new capacitors. The faulty cables have been replaced. The laser current has been set to 47-50mv with a technics T-016 calibration cd. Everything that normally fails has been looked over.
I even tried with another known good l272m and 4560 opamps on the servo board, but the fault still continues. Im really lost on how to continue. The only thing that comes to mind is maybe a software bug on the Motorola XC89507P cpu. The servo CPU is the MAB 8441P with the T012 rom. I will try to get a T014 cpu from another CD 350 and i will try to see if there is any difference.
Any suggestion is very appreciated.
I had a similar problem with Rotel RCD-865BX, CDM4/19.After I cleaned and lubricated the mechanism that moves the tray and replaced the belt, there is no problem.
Hello ivan. I already did the basic service of the mechanism. I replaced the belt, and lubricated the rails. The mechanism opens and closes smoothly.
Today i started searching in my old spare parts box. And i found two front PCB's from dead Philips CD 350 machines that had been parted, and they gave me the PCB's. My machine originally came with a Motorola XC89506P, and i suppose it had the 014T rom in it, since that is what the service manual states, and the ic says "A14T".
Both of the other front PCB's have a MAB 8441P T042 MCU. Which is not only uncommon, but i haven't seen any documentation of it being used in CD 350 machines. This MCU is commonly related to newer TDA 1541 machines. Since it came stock, i just plugged the front PCB and to my surprise, it works just fine with the MAB 8441p T012 servo IC.
I noticed a very subtle difference on the servo's noise while reading the cd. But my problem is still the same. With some cd's the machine fails to read the toc multiple times, and sometimes it gets the toc immediately and plays just fine.