I have one old Onkyo CD player on repair desk. I acquire this unit from last owner who tried to fix laser pickup reading problems. Unit comes to me without functional laser pickup (laser is not functional, no beam). I find replacement and after puting on cd mechanism I got the beam but after some investigation discover that last owner moves down cd spindle turntable. Now CD when I put on spindle lay on laser unit. My big question is: what is proper distance between laser lens and surface of CD media. Thank You all for help...
Most Onkyo cd players had a Sony laser assembly fitted.
These come as a complete assembly and are fairly inexpensive.
If the height has been mucked about with, the actual height I cannot recal but move the turntable to the top of the spindle, if it acheives focus, move it down so aproximately 1mm of spindle is proud.
I would replace the complete assembly as the motor is the main cause of issues in the Sony, Sanyo and Pioneer units.
These come as a complete assembly and are fairly inexpensive.
If the height has been mucked about with, the actual height I cannot recal but move the turntable to the top of the spindle, if it acheives focus, move it down so aproximately 1mm of spindle is proud.
I would replace the complete assembly as the motor is the main cause of issues in the Sony, Sanyo and Pioneer units.
This is old top of the line player and use sanyo SF-P100 pickup. I found on internet some info regarding service procedure for turntable adjustement with specified hights and distance from CD surface and sliding rods of laser pickup but unfortunately my player have linear magneticaly actuated pickup slide mechanism without rods. I will try your method and before that I will check spindle motor.
If I had a clue to the model of cd player you refer to, that would help, otherwise pure guess work.
The distance of the disk surface from the lazor lens is critical.
Even a fraction of a millimeter can affect reading the disk properly.
Alignment is done using an O'scope and test disk.
Amateurs messing around with things like that, or turntable tonearm bearings are asking for trouble.
Even a fraction of a millimeter can affect reading the disk properly.
Alignment is done using an O'scope and test disk.
Amateurs messing around with things like that, or turntable tonearm bearings are asking for trouble.
CD player in Onkyo DX-7711 and I have 2Gs/sec oscilloscope and test disks. Any clue how to adjust spindle turntable distance?
Sounds like a Sony KSS 121A drive. I have a 1980s Denon with the same drive but I am travelling at the moment or I could scan the manual. A bit of searching should find it.
