Bay Area Beogram 8002: Trying Out the Restored Components

 After the capacitor replacement in the previous post, I installed my test connector for ease of testing the scanning LDR devices.

Removing the button control panel from its circuit board I found the usual bit of dust that accumulates over the years. 

The dust is always loose type dust and easily wipes clean.
I soldered on the test connector and reassembled the button panel.

Another task I completed was cleaning and lubricating the tangential arm assembly.
The drive spindle and nut were in really good shape and I didn't see anything out of the ordinary.

Here are the before and after shots of the spindle and nut cleaning.

The rubber ends of the rear shaft (for the tangential arm assembly) were starting to dry out so I cleaned them and applied some rubber treatment.

The Beogram 8002 units for markets with a line voltage of 60 Hz have the rear tangential arm assembly shaft with the rubber end dampers. 50 Hz line voltage markets do not. I always wondered if the Bang & Olufsen design engineers knew the 60 Hz damping would be required from the beginning or as a result of testing the product.

Before fully reinstalling the tangential arm components I reassembled the arm assembly without the spindle and nut.

When installed this way I can manually move the arm assembly along its rails which is handy to adjust the fixed arm and tonearm for horizontal parallelism.

Earlier when examining this Beogram I could see that the arms were a little off.

Either the tonearm has to be adjusted up or the fixed arm adjusted down.

To go along with the adjustment there is the service manual adjustment for the height of the arm above the platter.

That is the reason I installed the arm assembly where I can easily slide it by hand.
I installed the platter and slid the arm assembly over it to check the height.

The fixed arm was too high and needed to be lowered.  The top of the fixed arm needs to be 19.5mm from the platter surface.

Using the single screw at the rear of the fixed arm I adjusted its height to the platter. 

After the fixed arm was lowered the tonearm still needed a slight adjustment up to be parallel.
That is another reason to do this with the spindle components out of the way.
The adjustment screw for the tonearm is on the underside of the tangential arm assembly so the assembly has to be flipped over to get to it.

Now with the arm height and horizontal parallelism adjustments made I lubricated the tangential arm components as I reinstalled them.

On the spindle I use a mixture of Rocol MTS 2000 and ESSO NUTO HP32 (1:1 ratio).
On the front and rear shafts the arm assembly slides on I put a thin layer of white D.C. M-kote paste.
For the two mounting points of the spindle onto the floating chassis I used some Tri-Flow synthetic grease.

I also installed a new servo belt as the old one was starting to develop cracks.
This replacement belt is one of Martin Olsen's reproductions.

The floating chassis parts are now ready to hook up to the Beogram 8002 electrical components for a quick functional test.

Here are the main Beogram 8002 components reconnected and ready.

The Standby dot is on so everything is good so far.
Pressing the Play button resulted in the Beogram moving the tangential arm assembly out over the platter to look for a record.  At the 17 cm mark the Beogram controller changed the platter speed from 33 RPM to 45 RPM.

It is always a bit of a thrill to see everything work properly on the first test.

The platter speed adjusts itself quickly and accurately.
The Turn, Stop and speed selection buttons all work correctly.
The forward and reverse scanning buttons work but I will still go through that service manual adjustment.

The next step is to go through the service manual adjustments to finish the functional testing.
I will also hook up some wires to view the sensor signals on the oscilloscope.