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Laser replacement problem
Laser replacement problem –
Hi everyone, I've got a bizzare problem here when I swapped lasers out of two machines, both lasers are 400B's so they are compatible. After the swap, one machine is still working fine but in the second machine, a V4 USA, during startup I can hear a buzzing sound coming from the drive. I take it apart and watch as it boots and it seems the drive motor is trying to ram the laser eye into the spindle!
After about 2 seconds or so it stops and it resumes normal operation but it makes this sound every time I reset the machine. The problem is clearly on startup the system brings the eye to the center of the disc getting ready to read the disc TOC but it doesn't stop and it keeps going. Does anyone know how to fix this?
I don't think letting it be would be a suitable solution since the white plastic piece that fits in the groves of the drive shaftis made of plastic and the drive shaft is metal, eventually the plastic will break in this case. Someone please tell me they have an answer!
Maybe its not the laser but another part of the drive that is malfunctioning.
Maybe but I doubt it.. taking a quick look at the working system it basically does the same thing but that one seems to know when to stop where as the problematic one seems to just keep driving the eye into the spindle until it eventually gives up after about 2 seconds.
easy one this the laser maybe the same but the spindle houseing is slightly different it sounds as if its grateing correct if you look just under the spindle where the disc sits you will see a micro switch the optic isnt touching this switch to shut the motor down all you need is a bit of hot glue a strip if thin plastic a bit a whizz and bang and it will work you should get the idea when you see it what you need to do.
OMG! Thanks for the info! I can't believe I missed that, the switch is in plain sight! I guess you sort of miss the obvious when you've been pulling your hair out over something like this. I haven't fixed it yet but at least I know where the thing is. Thanks!
no probs your welcome m8 same problem also happens with the ps1 if any one needs that info.