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Servo motor swap on Panasonic RQ-S80

drmr2000 - 2009-12-01 20:45

Servo motor swap on Panasonic RQ-S80, had to swap the motor because bearing were bad on old motor and last owner did a hack job on the rotor. Notice by the motor there a crystal the unit has a Quartz lock system.

This is after motor was swap finish product


This was old servo motor outside the unit, look at picture you will see why it was change.



Servo motor came out of this unit here pictures of inside unit with PCB removed this panasonic RQ-SX11








Here the Panasonic RQ-S80 put back together

tuna - 2009-12-02 07:05

Nice work! This looks a lot like the sx33/sx3 I am sending you. The previous owner did mess the pins on one of them. But the motors look good - like the new one you installed. I am really surpprised it is taking such a long time but still i hgope all goes well. I sent it on moday - that is 16 days ago!! Is it possible it's taking such a long time for they charged me more than 40$ for the shipping1

elite1502323 - 2009-12-02 07:50

It's great that you saved your S80! That's a really nice Panasonic unit. However, even though that component looks like a quartz lock crystal, I don't think that is one. Many of the earlier Panasonics have that same small cylindrical metal component, and they're not quartz locked units. And I don't belive there is any mention of a quartz lock system in the S80 manual/specifications. Usually if a manufacturer goes through the expense of integrating quartz lock into a Walkman/personal stereo, they mention it on the unit or in the manual as a feature. Ex., D6C, D6, DC2, Quartz DD series, etc.

tuna - 2009-12-02 09:01

quote:
Originally posted by elite1502323:
It's great that you saved your S80! That's a really nice Panasonic unit. However, even though that component looks like a quartz lock crystal, I don't think that is one. Many of the earlier Panasonics have that same small cylindrical metal component, and they're not quartz locked units. And I don't belive there is any mention of a quartz lock system in the S80 manual/specifications. Usually if a manufacturer goes through the expense of integrating quartz lock into a Walkman/personal stereo, they mention it on the unit or in the manual as a feature. Ex., D6C, D6, DC2, Quartz DD series, etc.


Yeah maybe so. But in ym experience, Panasonic players if they are working properly have a really good pitch stability. No problems whatsoever regardless of the tape tape and manufacturer. I can't notice any wow while listening to the piano sounds. Also, while all the gears in the mechanism aree plastic, their durability is quite excellent. Apart from belts shanging, i haven't had a single problem with the Panasonics.

drmr2000 - 2009-12-02 09:19

quote:
Originally posted by elite1502323:
It's great that you saved your S80! That's a really nice Panasonic unit. However, even though that component looks like a quartz lock crystal, I don't think that is one. Many of the earlier Panasonics have that same small cylindrical metal component, and they're not quartz locked units. And I don't belive there is any mention of a quartz lock system in the S80 manual/specifications. Usually if a manufacturer goes through the expense of integrating quartz lock into a Walkman/personal stereo, they mention it on the unit or in the manual as a feature. Ex., D6C, D6, DC2, Quartz DD series, etc.
It's a quartz lock system it goes to the tt lead of the servo IC which check the PLL on the motor for correct speeds, why Panasonic didn't advertise this, don't know?

drmr2000 - 2009-12-02 09:24

quote:
Originally posted by Tuna:
Nice work! This looks a lot like the sx33/sx3 I am sending you. The previous owner did mess the pins on one of them. But the motors look good - like the new one you installed. I am really surpprised it is taking such a long time but still i hgope all goes well. I sent it on moday - that is 16 days ago!! Is it possible it's taking such a long time for they charged me more than 40$ for the shipping1
Do you have a tracking on that one?

tuna - 2009-12-02 10:49

quote:
Originally posted by Tuna:
quote:
Originally posted by Tuna:
[QUOTE]But the motors look good - like the new one you installed. I am really surpprised it is taking such a long time but still i hgope all goes well. I sent it on moday - that is 16 days ago!! Is it possible it's taking such a long time for they ch


Hmm i don't thinks so. It doesn't say anywhere on the reciept tracking number or anything. There is a bar code and some number on the top. But it is insured, though i don't know what good may it do if you don't recieve it. Have you ever bought anything from Europe?

drmr2000 - 2009-12-02 11:13

quote:
Originally posted by Tuna:
quote:
Originally posted by Tuna:
quote:
Originally posted by Tuna:
[QUOTE]But the motors look good - like the new one you installed. I am really surpprised it is taking such a long time but still i hgope all goes well. I sent it on moday - that is 16 days ago!! Is it possible it's taking such a long time for they ch


Hmm i don't thinks so. It doesn't say anywhere on the reciept tracking number or anything. There is a bar code and some number on the top. But it is insured, though i don't know what good may it do if you don't recieve it. Have you ever bought anything from Europe?


All the time only take two weeks, maybe longer during the holidays, I notice mail been slow lately, it may here or on the way, will have to see after work.

tuna - 2009-12-02 11:24

It sems I have a tracking number after all. It is the number above the bar code. I searched for it at he local post service and found it. it was shipped to US - it is the last thing it said. Maybe it cannot track it in the US so should I maybe register to ups.com or something? I really don't know what system are they using.

Losing the Aiwa would be the worst thing that could happen. I've had my share of bad luck with cassette players but this would be the worst thing EVER.

tuna - 2009-12-02 11:45

it says in case of non delivery, return to sender immediately. Stupid women at the post office. I told them speciafically to wait for a couple of days. I think the postman should still leave you a note if you are not at home. Croatia must have the world's worst post office!

drmr2000 - 2009-12-02 13:25

I am only off on mondays, but they sure have left a note then I could have had it redeliver on monday normally is what I do, why they didn't leave a note beat me?

tuna - 2009-12-02 22:13

I don't know! Maybe it hasn't arrived yet. Maybe it got detained on the import customs or something. I hope it all works out well.

cassettekid - 2009-12-03 03:40

quote:
Originally posted by DrMR2000:
quote:
Originally posted by elite1502323:
It's great that you saved your S80! That's a really nice Panasonic unit. However, even though that component looks like a quartz lock crystal, I don't think that is one. Many of the earlier Panasonics have that same small cylindrical metal component, and they're not quartz locked units. And I don't belive there is any mention of a quartz lock system in the S80 manual/specifications. Usually if a manufacturer goes through the expense of integrating quartz lock into a Walkman/personal stereo, they mention it on the unit or in the manual as a feature. Ex., D6C, D6, DC2, Quartz DD series, etc.


It's a quartz lock system it goes to the tt lead of the servo IC which check the PLL on the motor for correct speeds, why Panasonic didn't advertise this, don't know?


Was this a specification that the ' Consumer ' needed to know about,? was this a selling point? on a walkman - like sure there was advertising about walking jogging - you could do with these, but did Panasonic really dig deep into how they manufactured these to work really well and the use that technology as a selling point, or did the Average consumer didnt need to know or wouldnt care? or was panasonic just makeing these cause they could and no advertising blitz, just riding on the coattails of the [ sony walkman ] - hey if they seen the panasonic alongside the sony , in the store,.. - who knew what when about the advertising back then.

tuna - 2009-12-03 07:21

I have some 90s Panasonic catalogs. They don't say anything about it. But one of them says electronic speed control ysytem which refers to the servo motor. It doesn't necessarily make it quartz. But this is not something worth argueing about.

elite1502323 - 2009-12-03 08:11

I got a hold of my friend here in New York City who used to work for Panasonic repairs in Secaucus, NJ. He said that the component is merely an oscillator, not a quartz oscillator. The part number is RSXD32K7F03 for your reference. He said you are correct however in that it is a PLL (phase loop lock) system.

gregorybotha - 2009-12-03 10:22

The process in our country (South Africa) is to phone the internal postal department (part of the post office) and give them the international tracking number, in turn they give me a local tracking number which I use to see where the item is and track it from there. It can take up to 4 weeks, after it arrives in the country, for the item to clear customs and arrive at my postal address.

It's the strangest thing, some international items arrive in 2 weeks and then others up to 6 weeks. Customs does have an effect on this time as high value items get checked.

Check if you can get a local tracking number by giving them the international number. It's worth a try.

tuna - 2009-12-03 11:51

quote:
Check if you can get a local tracking number by giving them the international number. It's worth a


Thank you Greg I will do as you told me!

In my declaration I said it was worth 40$ so that isn't a lot of money. For me it is worth much more than that. US import custom policy is an unknown here as they can't be sure what can and what can't be imported into the US. But you have given me some reassurance Greg when you said it may take up to 6 weeks. I hope it won't though but if it raches it's dwstinatopn either way, I'll be happy.