This CT F1000 powers on, but there is no power to the motors. Checked the power supply and it is working OK. I have another working unit and took some comparative voltage readings on the Control Assembly board. With the exceptions noted below the readings were similar on the good and bad units. The differences were:

(Pin:Voltage Good Unit: Voltage Bad Unit)

(11: 9.3VAC : 7.7VAC)
(12: 9.3VAC : 7.7VAC)
(13: 4.4VAC : 2.5VAC)
(14: 4.4VAC : 2.5VAC)

There is a motor control board that's connected to the Control Assembly board and the capstan motor. On the good unit, there is power going into the board and out to the capstan motor. On the bad unit there is no power going in or out.

On the good unit, on power-up the capstan motor runs and the FF motor runs briefly to take up slack in the cassette. On the bad unit, neither motor runs. Also the play, FF Rev buttons have no effect.

Everything else seems to be functioning. I can pass an input signal through it and monitor it through the headphone jack.

Where should I start looking? I do have the service manual thanks to this site.

Thanks

Check the cassette-in microswitch on top of the transport. Known to fail.

BINGO!!!

Ed was correct. I placed a jumper across the one microswitch and now the capstan motor works as well as the FF motor.

The FF and Rev doesn't work due to slippage, but the motor does.

Thanks for the help.

Now I can see if there are any other issues.

Will keep you posted.

Fixed the FF and REV. It works great.

I do have another question. I have another unit that I thought was working correctly but may not be. When I turn it on, the capstan motor goes on and stays on even without a tape in the unit. Maybe that microswitch is bad?

The one I just fixed with the new microswitch doesn't do that on power-on. The capstan motor does not work unless a tape is in the unit, which makes more sense to me.

Which is the correct way on power-on???

There is another microswitch that detects the presence of a cassette. Turn on your unit and looking at the front of your deck you will see a stainless steel rod sticking out of the deck through a special notch in the faceplate. Push on that rod and you will see the capstan start turning and the supply reel will turn counter clockwise about 3 turns. It will be at about the 2 o'clock position to the right hand capstan. It is directly above one of the black plastic "fingers" that pushes the cassette tape upwards when loaded.

If you load a cassette it will push against the rod and thru linkage will close another microswitch. When working properly, this action activates the supply reel to remove slack tape by rotating counter clockwise about 3/4 turn and turn on the capstan motor. Sounds like you need to replace another microswitch.

Great deck. Robust and built to last. One of the more complicated tape transports, but respons well to a belt job. I like it better than my CT-F950 and CT-F1250. Both of those units have real problems with the FF/RW/Take up motors. The motors on the CT-F1000 are tougher units.

aldena007

There is another microswitch that detects the presence of a cassette. aldena007


Well you got me wondering about that 4th switch. There are only 3 microswitches on top of the deck mechanism, (rec safety tab, CR02 and cassette in or "cassette half switch" as Pioneer calls it) which I already covered before. See attached picture from my service manual. Where is the other switch involved in the motor circuit?






Great deck. Robust and built to last. One of the more complicated tape transports, but respons well to a belt job. I like it better than my CT-F950 and CT-F1250. Both of those units have real problems with the FF/RW/Take up motors. The motors on the CT-F1000 are tougher units.

aldena007 I have one of each I definitely prefer my CT-F1250. My 1000 sits, retired. CT-F1250 has dead-on accurate quartz-locked speed, and adjustable record bias, level and rec eq are what I prefer over the 1000. The rubber drive parts wear out in a 1000 just like in a 1250. Troubles with both in that regard which is not unexpected in 30+ year old tape decks.



Fixed the FF and REV. It works great.

I do have another question. I have another unit that I thought was working correctly but may not be. When I turn it on, the capstan motor goes on and stays on even without a tape in the unit. Maybe that microswitch is bad?

The one I just fixed with the new microswitch doesn't do that on power-on. The capstan motor does not work unless a tape is in the unit, which makes more sense to me.

Which is the correct way on power-on???



I have added another attachment that describes the operation, from the CT-F1000 Additional Service Manual. If the capstan motor runs all the time in one of your 1000s, then there's a problem with that one.

It was the microswitch that indicates a cassette is present. The same one Ed mentioned initially.

There are only three microswitches. I replaced it in the other unit and everything is now working fine.

Thanks for the help.

Glad you have resolved the microswitch issue. I did not mean to imply there were 4 microswitches, I was basically relating the behavior that you should expect in a deck that was working correctly.

Ed in Texas: I did not mean to denigrate the CT-F950's and CT-F1250's. I have both units and they represent a technological leap in improvement over the CT-F1000, but I still stick by my original observation that the tape transports of those two units have a weakness only in the motor that is employed for FF/RW/ and Takeup reel. I don't think anyone at Pioneer ever thought these units would still be in any operational condition in 2009 so any functionally we now see in these units is amazing.

Alden