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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: EAD T-1000 transport Service Manual or Schematics ?? posted by rogerh113 on August 7, 2016 at 06:54:27:
For ANY disc reader, the 'first to go' things are all the same.
#1 is crudded up sled rails. They get dry on the main area, and all the old grease gets pushed to the ends.
One real easy thing to do: Using a toothpick re-grease the sled rails with the original grease shoved to the ends. Usually a white grease, just move some with the toothpick from the clumps on the ends of the rails and re-spread it to the middle and all around. It does not need to be pretty. Just moved around top. sides and bottom along the rails.The second thing varies for different players.. The top puck or whatever clamps down on the disc to play. Check it while playing. See if it is binding. some are loose pucks with slots locked into a top plate. That may need adjusting (bending up/down VERY slightly)
More variety of what could be wrong. Also the base spindle puck may be able to move on it's spindle vertically. And from two CD or a CD and a mat, that bottom puck got shoved down a tiny bit. Moving it back 'up' is just a little pressure to slide it back up. This is a harder to do thing mainly due to fear of the unknown.
Some under pucks DO NOT MOVE.A final thing which is basic death of the transport is the motor has one failed coil of several. So SOMETIMES the shaft is aligned so it can start. sometimes not.
The way to check if this is the issue, is to have a fail (with cover off) and start the disc spinning by hand. IF it goes (starts up and plays normally after getting it going).. Then you got this issue. And a replacement drive is in order. You can live with this until total fail if you can put up with hand starting some discs..
Also you can see if EACH and every disc spins when you close the drawer.(with top off) Every disc should spin, briefly. If NO spin on some discs. then you got this problem, which is a replace the motor. (it might be a capacitor, but no one does a tiny cap on motor circuit board replacement. It would be for a electronics repair maven to do his own tests for those tiny failed caps. Replacing all the tiny caps on the motor circuit board might be worth a try. if it is a $$$ item and all other hope is lost.) Dead caps kill more transports than people think. Folks replace the whole laser assy instead of checking the caps..
Edits: 08/13/16
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Follow Ups
- sled rail grease.. check disc top clamp - Smelly_Socks 12:39:18 08/13/16 (1)
- RE: sled rail grease.. check disc top clamp - rogerh113 06:17:33 08/15/16 (0)
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