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Old 21st June 2013, 11:52 AM   #11
Hrmmf is offline Hrmmf  Denmark
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Quote:
Originally Posted by SonyES View Post
Micro-seki has a similar layout so maybe this photo might be of help:
Click the image to open in full size.
Thanks SonyES

Mine looks exactly like that. Further investigation of what might be the cause of "jump" must be initiated ASAP

/Thomas
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Old 27th June 2013, 11:50 AM   #12
Hrmmf is offline Hrmmf  Denmark
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So I've taken a short and terribly shaky video of the "belt jump"

The phenomenon makes the CD tray run very unevenly, which cannot be good for longivity

It seems the belt drags on the wheel(s). Maybe the belt is too short/thick.? Belts are ordered as original replacements

https://dl.dropboxusercontent.com/u/...8/MOV_0158.mp4

/Thomas
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Old 27th June 2013, 01:24 PM   #13
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It looks to me like there's a problem "downstream" from the belts that is causing the problem, the belts look fine. I noticed that the place where the belt "slips" is consistantly in the same spot for both strokes in the cycle. I'd take the drive belt off and run the mechanism through a complete cycle by hand. I think you'll find a spot at about half-way through where the effort increases, possibly from component wear or misalignment.

Mike
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Old 27th June 2013, 01:35 PM   #14
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Presumably the cord should be wound such that when viewed from above it doesn't cross. It should have been designed with the top run of the cord on the inside, but I don't know which way round they actually did it.

Remove the inner belt and operate by hand. You might be able to feel where it's sticking.

The clip attaching the cord to the tray appears to be catching on the belt or the small end of the drive wheel.

Is it driven on just one side? If so then sideways clearance in tray bearings is important. Too slack and it can grab, too tight and it will drag.
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Old 27th June 2013, 03:20 PM   #15
Hrmmf is offline Hrmmf  Denmark
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Thanks for the input guys!

I think that I've found the intruder. The cord arm rides on the inner belt when CD tray travels across it

Now I just need to address the manual on how to adjust the CD tray height.

/Thomas
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File Type: jpg CD960_belt_1.jpg (108.2 KB, 29 views)

Last edited by Hrmmf; 27th June 2013 at 03:24 PM.
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Old 27th June 2013, 03:49 PM   #16
SonyES is offline SonyES  United Kingdom
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Was going to say from your video it looks like the arm is catching on the plastic pulley wheel, almost looks like the belt is to thick for the pulley, how does it relate to the old belt size wise?

Stu
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Old 27th June 2013, 06:20 PM   #17
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Try refitting the original inner belt.
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Old 27th June 2013, 06:37 PM   #18
Hrmmf is offline Hrmmf  Denmark
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Quote:
Originally Posted by SonyES View Post
Was going to say from your video it looks like the arm is catching on the plastic pulley wheel, almost looks like the belt is to thick for the pulley, how does it relate to the old belt size wise?

Stu
By inspection of the old belt, they don't relate

Quote:
Originally Posted by PlasticIsGood View Post
Try refitting the original inner belt.
Will do

Thanks guys

/Thomas
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