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[DVL-919] Laser assembly carriage unit removal...
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Author:  rixrex [ 13 Jan 2013, 03:40 ]
Post subject:  [DVL-919] Laser assembly carriage unit removal...
Have a DVL 919 that I want to remove the whole laser assembly carriage unit, tracks and all. Reason is because one laser is stuck all the way to the back with grinding gears. Need to get at it, but only removing the whole unit will do. And I may just end up replacing the whole thing anyway.

So, as far as I've gone is taking off everything blocking it from lifting out. Now what I see are two clamp-like devices screwed to the bottom of the player and seemingly holding the assembly in place, one on each side. It looks like if I remove these and take loose the two rear lift springs from their overhead catches first, it may lift out. But before doing this, I want to see if I'm on the right track here. Can anyone confirm this process, or tell me if I'm off somewhere?
Author:  grasshopper [ 13 Jan 2013, 04:11 ]
Post subject:  Re: DVL 919 laser assembly carriage unit removal...
rixrex wrote:
Have a DVL 919 that I want to remove the whole laser assembly carriage unit, tracks and all. Reason is because one laser is stuck all the way to the back with grinding gears. Need to get at it, but only removing the whole unit will do. And I may just end up replacing the whole thing anyway.

So, as far as I've gone is taking off everything blocking it from lifting out. Now what I see are two clamp-like devices screwed to the bottom of the player and seemingly holding the assembly in place, one on each side. It looks like if I remove these and take loose the two rear lift springs from their overhead catches first, it may lift out. But before doing this, I want to see if I'm on the right track here. Can anyone confirm this process, or tell me if I'm off somewhere?


So your saying that one of the lasers are stuck inside the cage and wont move foward correct? Usually undoing the top clamper and then then removing the the side B plate 4 black screws and a ground wire screw and unplugging the side B switch wire rear right side. Then I can usually use my fingers or a pencil eraser and move the laser motor worm gear on the right if looking right at from the front, it should move out foward out of the cage little by little. That's basically how I always have done it. Let me know, Duane..
Author:  rixrex [ 13 Jan 2013, 17:59 ]
Post subject:  Re: DVL 919 laser assembly carriage unit removal...
You described it accurately.

I thought about removing those 4 black screws to get that plate off, and it seemed easy, but stopped because I was suspicious about releasing something holding the assemblies in place. In other situations where I thought I'd go the easy way, I always end up with a spring bouncing out and around the room, or ball bearing rolling away, or pieces falling apart that take three hands to hold back in place.

Anyway, I was able to rotate the worm gear as it is with a finger but it simple rolls back into it's stuck position, no matter which way that it's turned. So somehow it is stuck in place. I think I will do the upper plate removal now like you suggested since you have put me at ease about it,
Author:  rixrex [ 14 Jan 2013, 02:54 ]
Post subject:  Re: DVL 919 laser assembly carriage unit removal...  Topic is solved
So here's the result: Following your advice, I removed the top plate easily enough. Discovered that the Laser assembly (for the LD playback) had ridden up on its side opposite the gearing to be above the metal rail, rather than below. I backed up the assembly to clear the rail, removed the rail, and then move the assembly forward to drop down to proper position, moved it back again to set its guide into the slot on the rotater, then reinstalled the rail.

Laser assembly moved clear at this point. There is some roughness on the gear track piece on the rotater where it had been spinning around and grating, but I cleaned that up as good as possible and relubed it, and it has mostly gone away. I suspected that the assembly got snagged here on an edge where it crosses that small space between the rotater and the base track. This apparently caused the other side's pin guide to lift up through an open space and over the metal rail, and then it got really stuck in place.

So now LDs work just fine, both sides. The only current problem is that the DVD laser won't read. Insert a DVD, the laser moves out, DVD spins up, I hear a small beeping sound, the laser switches to LD, DVD spins up and of course LD laser won't read, it goes back and brings out DVD laser. DVD spins up again and then a beep again, and it quits. Often then the tray opens, sometimes the player just turns off.
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