MY 10+ Yrs Old VRDS-10 need help! - diyAudio
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Old 9th October 2007, 02:31 PM   #1
mkliu is offline mkliu  Hong Kong
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Default MY 10+ Yrs Old VRDS-10 need help!

Dear folks,

Greeting from Hong Kong.
I am happy with my 10+ years old VRDS-10 happily. An year and a half years ago, it was sent to do a overhaul and replace the pickup unit. It's expected to service another ten year. Unluckily, it happened to have a tracking problem that very hard to get the right track on the beginning of the disc and skip among tracks.

I'd like to try here to seek a service manual for VRDS CDP, best for my 10 before I send it again to the dealer. Basically, there are pots like "S. BAL, F. BAL, F, BAIS....." to adjust on the servo PCB.

Would all inputs are appeciated, if more information I am able to supply helping, feel free to raise here. Best!
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Old 12th October 2007, 06:43 AM   #2
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Default Re: MY 10+ Yrs Old VRDS-10 need help!

Quote:
Originally posted by mkliu
Dear folks,
I'd like to try here to seek a service manual for VRDS CDP, best for my 10 before I send it again to the dealer. Basically, there are pots like "S. BAL, F. BAL, F, BAIS....." to adjust on the servo PCB.

This is a very good transport CMK 3.2 and Laser KSS151A with linear sled motor.

Do not adjust anything unless you have the service manual and test gear.
I would clean all the old grease on the sled rails first, this should have been done when they replaced the laser, but maybe not, so do this first as old dried up grease will cause your symptoms, I use a castor bean grease which is non petroleum based, that is used for lubricating the rubber components on disc bake calipers on cars it is of the right fine consistency and doesn't seem to dry out, and has no effect on plastic parts. And is a blue in colour. Also very good for lubricating those plastic gears on transport mechs.


http://www.hrpworld.com/index.cfm?fo...action=product

Cheers George
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Old 12th October 2007, 08:17 AM   #3
mgm31 is offline mgm31  France
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I can confirm on a VRDST1

I got the same problem : intermitent skip on first track.

I took of the steel bar that support the laser assy and clean it.

Seems not to skip anymore
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Old 12th October 2007, 05:10 PM   #4
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In the VRDS units the disk is pressed against the fly-wheel above. It is lifted by gears driven by a small belt. When the belt gets old, it gets soft and loses tension. The reduced tension can cause the disc not to be lifted properly against the flywheel. When that happens, the disc can slip and cause playback to halt of stutter. You may be able to hear the flywheel "ringing" mechanically when the disc slips.

There is another small belt (same size) that drives the drawer mechansim. It suffers the same fate. The two belts should be replaced at the same time for it is sure if one is going the other is soon to follow.

I_F
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Old 12th October 2007, 07:50 PM   #5
mkliu is offline mkliu  Hong Kong
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Default Re: Re: MY 10+ Yrs Old VRDS-10 need help!

Quote:
Originally posted by georgehifi

This is a very good transport CMK 3.2 and Laser KSS151A with linear sled motor.

Do not adjust anything unless you have the service manual and test gear.
I would clean all the old grease on the sled rails first, this should have been done when they replaced the laser, but maybe not, so do this first as old dried up grease will cause your symptoms, I use a castor bean grease which is non petroleum based, that is used for lubricating the rubber components on disc bake calipers on cars it is of the right fine consistency and doesn't seem to dry out, and has no effect on plastic parts. And is a blue in colour. Also very good for lubricating those plastic gears on transport mechs.


http://www.hrpworld.com/index.cfm?fo...action=product

Cheers George
Hello folks,

I check the machanics of the transport, clean, lub, tighten everything, but the skipping still exist.

Luckily, a good mate in the forum email a service manual. It works again after step by step service. after that, I did installed a TXCO clock unit replacing the original one. it shock me right the way, I am very happy with it.
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Old 15th October 2007, 11:19 AM   #6
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The skipping of first tracks is a sign of worn bush/bearing (of the component the disk rotates on/spin moror). This may reduce with lubrication but will appear later as the wear is still existing.

Gajanan Phadte
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Old 1st April 2008, 10:03 AM   #7
cheah88 is offline cheah88  Malaysia
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Hi Mklau,

Can you send me the service manual for vdrs 10 also.

Many Thanks.
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