The AT is a replacement. Pioneer had their own line of carts they put on them. Carts were Mediocre at best. Part was PC-150.
The table is Middle of the line for that series. Even the 200(BOTL) is a decent deck, at least mine is. I don't know about the 400 but the 200 is prone to speed issues due to a dirty speed pot. Once you get the speed pot cleaned up, it's stable almost as good as a quartz lock, even tho it isn't.
Vinyl engine has the PL-400 owners manual. You should be able to fix the repeat problem. The repeat switch is more than likely gummed up. The grease is probably like the La Brea Tar Pits by now. Clean it good inside and lube. I've got the 200 and use the 400 manual. Not too much difference between them except for the repeat and record size features for Auto start which the 200 doesn't have.
The next series IIRC is the PL-2 to PL-9. I have PL-4, which would be equivalent to the 200 in features. BUT! The PL-4 is such a lightweight compared to the 200. The platter is 1/3 the weight, the total weight is about 1/3. The top plate/cover in the PL-4 is thinner plastic, the gimbel for the tonearm is cheesy, and the whole thing looks like a kids toy.
I'd keep the PL-400. It's dependable, can take most any cart, (I have anywhere from a 400V.3 Pickering, 500 Stanton/Pickering, V15 Pickerings, V-15-III SHURE, M55 Shure.) and it's decent looking to boot. But if you ever want to get rid of it, I'll be 1st in line!
Larry
Just wondering about thoughts or comments on this tt.Picked up a thrift job for $17.Scratched dust cover and an AT cart works but replays itself after each play.Is the AT the original type cart?
Underneath.
TAKE THE CARTRIDGE OFF BEFORE ATTEMPTING BELOW!!!!!
1.Remove the Tonearm Weight.
2.remove the Tonearm weight shaft (3mm hex wrench).
3.Flip over and remove the 4 feet. DON'T Mix them up. Keep orientation same. Fron Left to Front Left, etc.
4.Flip back over and lift front up just enough to undo the 2 pin and 5 pin eectrical connectors. Disconnect the strain relief for the L& R RCA's. Slide leads out of the slot in the bottom.
5. Continue lift from the front and start sliding the top forward to clear the tonearm.
6. Flip the top upside down and set aside on a towel for now.
7. Looking at the motor board you'll see a bunch of screws on the perimeter. Find the one's with the larger heads (3). They will be at about 1,5,and 9 oclock on the board. They will be about 2-1/2" long. If you get a short one put it back in. Once you get the 3 large ones out, lift the motor board up and forward.
8.) The main gear is accessable now. You'll see a stamped metal assy on the gear and a "V" or checkmark shaped "ACTUATOR" arm going to the right and under the tonearm assy.
These two are what i was talking about earlier. clean and lube.
You will need to remove the tonearm assy to remove the actuator arm. 3 screws again, 10,1,and 6 oclock. Note the off / on switch cam and actuator pin on the tonearm assy how it fits together. If this is NOT put back exactly as pulled out, it will not turn off and the tonearm will jam up.
It sounds worse that it actually is. It's rather easy. Just lay out everything in order and if you're not sure about something take a couple of pictures before taking it apart.
Larry
How about an uncropped pic.
Actually it's plastic. If you look under the tonearm, you see and "X" shaped affair with a pin pointing straight down off to the left of the tonearm at about 9:00. It fit's into a "V" shaped rotating switch actuator that turns the power switch off and on. The pin moves in an arc with the tonearm. It moves from 9:00 to about 12:00. When the tonearm returns it will end up in the "V" and rotate the "V" which will engage the switch shutting the power OFF.
LARRY.
Ok that looks like the power switch actuator. It's different than on the 200. You are gonna have to dig deeper to access the cycle mechanism.
See the yellowish gear in the back, under the motor? That's where you need to get. Looks like 4-5 scres to get the tonearm housing off, then 3-4 to get the motor off.
Then take another pic to post up so I can see what you have.
Larry