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Sony TC-377

Stereo / Mono Reel to Reel Tape Recorder

Sony TC-377

Description

The Sony model TC-377 is a three-head, four-track stereo tape deck designed for serious home recordists.

The highly developed facilities of the TC-377 will offer a new world of sound when used in conjunction with quality high fidelity components.

Special features include high performance Ferrite and Ferrite heads, microphone level attenuation switch, scrape filter which eliminates tape modulation distortion, tape tension regulator to reduce wow and flutter, automatic shut-off mechanism, tape select switch for low-noise high-output tapes, microphone and line mixing, sound on sound recording, echo recording, slant cabinet designed for convenience of operation in either horizontal or vertical position, etc.

In addition to these professional features, the model TC-377 is also designed to record and play back encoded SQ (Stereo Quadraphonic) signals with true fidelity.

Specifications

Track system: 4-track, 2-channel, stereo/monaural system

Heads: 1 x record, 1 x playback, 1 x erase

Motor: 1 x induction motor

Reel size: up to 7 inch reel

Tape speeds: 1 78  3 34  7 12 ips

Wow and flutter: 0.09% (7 12 ips)

Frequency response: 20Hz to 30kHz (7 12 ips)

Signal to Noise Ratio: 55dB

Total harmonic distortion: 1.2%

Input: 60mV (line), 0.2mV (mic)

Output: 0.775V (line)

Semiconductors: 23 x transistors, 5 x diodes

Dimensions: 418 x 210 x 392mm

Weight: 10.6kg

Accessories: empty reel, RK-74 connecting cord, motor pulley, head cleaning tips

Downloads

service manual (en)

instruction/owners manual (en) - mksierra

service manual (alt scan) (en) - Mikael Sandgren

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.

Sony Reel to Reels

Comments

re: TC-377

It's a bit late to respond to the problem of the function FW RW PLAY, not staying locked in, but…..I had this problem and followed this person's advice on you tube. Worked great, You wouldn't think so but the area that needed cleaned was a small cam/bushing beneath the selector knob. In order to do it you will need to remove the four screws that hold the head assembly and turn it up side down to see the area. You do not have to remove the entire head assembly, wires and all. Just undo a few linkages and turn it upside down and tuck a cloth underneath to protect from overspray. Here is the you tube link. http://www.youtube.com/watch?v=RZriFIhSvmA

re: TC-377

Hello to everyone,
I have an original TC 377 sony reel to reel it works verywell but after playing some tapes suddenly the speed goes waydown,and singers voice sounds like an oldman ,
does this cause because of old dirty tapes,and what is the best cleaning solution for pinch roller and tape paths
thanks for any help
Eli

re: TC-377

Switched mine on for the first time in a long time, something went pop, maybe a capacitor In the power supply? Any ideas

re: TC-377

Mine did this as well. It was the supression capacitor across the mains. Easy repair.

re: TC-377

Reels turn very slow in forward position & do not turn in rewind position. Turned reels by hand: ake-up reel seems to turn freely, other reel (left side) seems to turn very hard. Belts are in place and seem to be working. Any solutions?

TC-377 Function Control Knob does not stay in place

This machine has not been used for a long time and I find the the main function control knob no longer locks in place in rewind, fast forward and even in Play it really doesn't lock in solidly. I've lubed all the linkages and cams on the main function control but this doesn't seem to help.

Anyone else have this problem and perhaps have a fix for it?

Thanks

Function control does not lock

Hi fesnell.

You're in luck, as i just logged-in for the first time in about 2 years to get a copy of the service manual for a TC-377!

OK I have two of these units and one has had this same issue. Are you at all mechanicaly minded to work on it yourself? I've found the problem to be a tiny little return spring wrapped around a little metal stop-block thing that's part of the auto-stop feature lever at the back of the function control knob mechanism. It for some reason tends to slip out of place(unwraps itself). IT kind of puts the unit into perminant auto-stop mode as though you have left the lever down. There is also an adjustment for the sensitivty of the auto-stop(It should be in the service manual). You'll have to remove the plate which holds the heads etc to get to it all. Don't remove the head block from this plate if you can avoid it so as not to need to re-align the entire record/play heads etc.

Anyway you'll find it when you get there, good luck!
Cam

Sony TC-377

The reels aren't turning. Can anyone help?

Sony TC-377

Hi,
I've just looked at one of these for a friend of mine. Check your drive belts and drive surfaces first.
The problem I had was that the control could not be moved to the play position. This was due to the pinch roller mounting pillar jamming, this was easily cured by regreasing the mounting. Check also the cam that drives the roller from underneath.

northside.stephen

speeds

I just bought a used Sony TC-377 and only two speeds, 3 3/4 and 7 1/2, will turn. The other speed 1 7/8 refuses to turn the spool. Can any one tell me what am I looking at needing to do to remedy this.

speeds

reel to reel nut's picture

Its either the rubber on the drive idler gone a bit hard or the spring which pulls the idler in contact with the flywheel & motor stretched slightly . I have a 377 which does this and if I force the idler harder into the motor etc it works ok. Im looking to start making a replacement nylon idler with a new drive tyre when I can get a small lathe.

Sony TC366

Anyone have the manual for this model?

tc 366 manual

NancyNDon@comcast.net's picture

The service manual for tc 377 should suffice. There were only minor changes from the 366 to the 377.

manual for TC-366

I actually have the original manual for this tape deck. I also have the tape deck that I purchased new back in the 70's. I could copy this for you if you are still interested.

user manual tc-366

Yes, I really appreciate if you would douwnload a copy of the Sony Tc-366 manual for me.
Thank you ,Phil G

My Sony TC-355 is running fast

Any chance someone knows how to adjust spped?

tc-355 running fast

Dear sir,
Pleaase see the pinch roller tension.if it is ok then check the drive belt
whether it is gone loose.if the belt is loose it will give u the speed problem.

 

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