Today I pulled out one of my turntables Akai AP 55. It does have a functional dust cover. But to my display I find that lot of dust somehow went inside. I have removed all traces of dust. But since I opened it up, i thought of lubricating various parts where metal rub against metal. All done except for the Direct Drive motor. Couldn't figure out where to put the oil. I generally use Johnson's baby oil as I find it has never harmed plastic, rubber, etc. I guess it is some kind of silicon oil.
I also cannot download the service manual from vinyl engine. If anyone can download it for me, I will be grateful. You can email it to mbhangui at gmail.com
EDIT: I managed to get the service manual but couldn't find anything about lubriciation.
View from the top side with the platter removed.
View from the bottom with cover removed. One can see the RCA cable soldered to a PCB. I'm thinking of removing this cable and put good quality RCA connectors. But I think in those days the capacitance of the cable played a part in getting the correct frequency response, but I'm not sure. Let me know if this shouldn't be attempted.
This looks like the control and driver circuit for the motor. All look fine. There are 3 fuses on the board.
This is a closeup of the motor. I did not dare to open it. The bulge in the center looks like a bearing inside. Couldn't figure out where to lube the motor.
Motor is labelled DDM 6C. Looks like DDM stands for Direct Drive motor.
Full view from the bottom
EDIT: I managed to get the service manual but couldn't find anything about lubriciation.
View from the top side with the platter removed.
View from the bottom with cover removed. One can see the RCA cable soldered to a PCB. I'm thinking of removing this cable and put good quality RCA connectors. But I think in those days the capacitance of the cable played a part in getting the correct frequency response, but I'm not sure. Let me know if this shouldn't be attempted.
This looks like the control and driver circuit for the motor. All look fine. There are 3 fuses on the board.
This is a closeup of the motor. I did not dare to open it. The bulge in the center looks like a bearing inside. Couldn't figure out where to lube the motor.
Motor is labelled DDM 6C. Looks like DDM stands for Direct Drive motor.
Full view from the bottom
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