cdm1 mkii replacement /risk or new paradise?
Hi there,
I have a Philips CD880 CD player. I think the laser pickup is getting weak in strength after intensively use for years. I heard that since the cdm-1 mk2 is too hard to get there is a solution to change a brand new head. The solution is to purchase a CDM4/19 laser pickup and dis-assemble the pickup and take only the swing head mechanism and to replace the original cdm-1 mk2's swing head mechnism.
I then bough a CDM4/19, it looks almost the same as the cdm-1 mk2's. The only difference is that there is a 100K ohm resister beneath the laser beam in cdm-1 mk2 while the cdm-4 isn't. Can I just do this? Will this replacement kill/burn the servo system or I can replace but need to change/add some passive components on the servo board?
Need your options to go on...
Hi there,
I have a Philips CD880 CD player. I think the laser pickup is getting weak in strength after intensively use for years. I heard that since the cdm-1 mk2 is too hard to get there is a solution to change a brand new head. The solution is to purchase a CDM4/19 laser pickup and dis-assemble the pickup and take only the swing head mechanism and to replace the original cdm-1 mk2's swing head mechnism.
I then bough a CDM4/19, it looks almost the same as the cdm-1 mk2's. The only difference is that there is a 100K ohm resister beneath the laser beam in cdm-1 mk2 while the cdm-4 isn't. Can I just do this? Will this replacement kill/burn the servo system or I can replace but need to change/add some passive components on the servo board?
Need your options to go on...
Hello,
In another thread I atached a doc with Philips CDM's and service nrs. As you can see from that list CDM 2 is not mentioned. It is indeed replaced by a CDM4/xx type. If you order a CDM2 at Philips Service you should automaticaly get the correct CDM4/xx. If you have an old Philips player with a CDM2 in most cases I can find the replacement CDM.
Success!
Ward
In another thread I atached a doc with Philips CDM's and service nrs. As you can see from that list CDM 2 is not mentioned. It is indeed replaced by a CDM4/xx type. If you order a CDM2 at Philips Service you should automaticaly get the correct CDM4/xx. If you have an old Philips player with a CDM2 in most cases I can find the replacement CDM.
Success!
Ward
Barclay Digital CD-M1
I have a dying Philips CDM2 in a Barclay Digital CD-M1 cd-transport. It is the one cd-transport that is made of both crystal glass and another type of polycarbonated material. Need lots of help since I am new at this. I will create a separate post for this problem that I am having.
I have a dying Philips CDM2 in a Barclay Digital CD-M1 cd-transport. It is the one cd-transport that is made of both crystal glass and another type of polycarbonated material. Need lots of help since I am new at this. I will create a separate post for this problem that I am having.
STUDER D732 CD player - CDM4
Hi everybody,
First of all sorry if I misuse the forum at the first time. I come to the forum because I type CDM4 on Google engine research. I have for many years a very good (for me) CD player STUDER D732. Since on month, after about 1 hour operating the sound is distorted. I switch it off for 15 mn and switch on the sound is good for one hour then is distorted again. I opened the player, and see that the player is a Philips CDM4/19.
I am looking for any document on the STUDER D732 or CDM4. Does anybody have an idea about the distorded sound (pick up problem?). Thanks.
Hi everybody,
First of all sorry if I misuse the forum at the first time. I come to the forum because I type CDM4 on Google engine research. I have for many years a very good (for me) CD player STUDER D732. Since on month, after about 1 hour operating the sound is distorted. I switch it off for 15 mn and switch on the sound is good for one hour then is distorted again. I opened the player, and see that the player is a Philips CDM4/19.
I am looking for any document on the STUDER D732 or CDM4. Does anybody have an idea about the distorded sound (pick up problem?). Thanks.
CDM2 to whatever replacement
Have a Barclay Digital CDM-1 CD-transport. I bought because of the way it sounds with my audio system. The laser is tired out which happens to be a Philips CDM2 (unknown version). Need and willing to pay to have a replacement or laser replacement. Desperately need help in this matter.
Have a Barclay Digital CDM-1 CD-transport. I bought because of the way it sounds with my audio system. The laser is tired out which happens to be a Philips CDM2 (unknown version). Need and willing to pay to have a replacement or laser replacement. Desperately need help in this matter.
as I know, the CDM-4/31 with integrated servo board - go to the associated image under
https://www.hifi-advice.com/blog/cl...cdm-mechanisms-page-2-cdm-4-cdm-1-mkii-cdm-9/
is the same than CDM-4/11, CDM-4/25 or CDM-4/27 - all without servo board.
According circuit diagram from last pages under
https://www.vintageshifi.com/repert...lufsen-Beogram_CD-7000_Mk2-Service-Manual.pdf
the integrated servo board is according the version "6105", which is to find in the Revox B126 with CDM-4/27 - go to
https://elektrotanya.com/studer_revox_b126_b226-s_sm.pdf/download.html
http://www.hifi-forum.de/viewthread-185-16611.html (first both images)
and in the Micromega SOLO together with CDM-4/25
The Arcam don't show schematic of servo board
https://www.vintageshifi.com/repert...e.php?pdf=Arcam-DELTA-70.2-Service-Manual.pdf
According Vasiltech the CDM-4/31 is in use in this models:
ARCAM DELTA 70.2, B&O Beogram CD7000 (manual online in the above mentioned URL), SHERWOOD CDP301R and CDP311R
Maybe one of the member can upload the service manuals from SHERWOOD's CDP301R and CDP311R - thank you.
https://www.hifi-advice.com/blog/cl...cdm-mechanisms-page-2-cdm-4-cdm-1-mkii-cdm-9/
is the same than CDM-4/11, CDM-4/25 or CDM-4/27 - all without servo board.
According circuit diagram from last pages under
https://www.vintageshifi.com/repert...lufsen-Beogram_CD-7000_Mk2-Service-Manual.pdf
the integrated servo board is according the version "6105", which is to find in the Revox B126 with CDM-4/27 - go to
https://elektrotanya.com/studer_revox_b126_b226-s_sm.pdf/download.html
http://www.hifi-forum.de/viewthread-185-16611.html (first both images)
and in the Micromega SOLO together with CDM-4/25
The Arcam don't show schematic of servo board
https://www.vintageshifi.com/repert...e.php?pdf=Arcam-DELTA-70.2-Service-Manual.pdf
According Vasiltech the CDM-4/31 is in use in this models:
ARCAM DELTA 70.2, B&O Beogram CD7000 (manual online in the above mentioned URL), SHERWOOD CDP301R and CDP311R
Maybe one of the member can upload the service manuals from SHERWOOD's CDP301R and CDP311R - thank you.
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My estimate wasn't right due a not brushless motor as spindle motor (like CDM-4/19)
The integrated servo board is a universal version - concerning the equipped parts PCB is both suited for brushed and brushless spindle motor versions.