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Akai GXC-730D

Stereo Compact Cassette Recorder (1976-79)

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Akai GXC-730D


Akai's GXC-730D stereo tape deck features a GX Head forward and reverse recording and playback.

The GX recording/playback head is centrally positioned between two stout capstans for complete stability in both directions.

Automatic and manual playback and recording in both directions, convenient front loading design, and Tape Direction Indicator Lamps offer the ultimate in operating ease.


Type: auto reverse, 3-head, single compact cassette deck

Track System: 4-track, 2-channel stereo

Tape Speed: 4.76 cm/s

Heads: 1 x record/playback, 2 x erase

Motor: 4-pole hysteresis synchronous outer rotor

Tape Type: type I, CrO2, FeCr

Noise Reduction: B

Frequency Response: 35Hz to 17kHz  (FeCr tape)

Signal to Noise Ratio: 60dB  (dolby B)

Wow and Flutter: 0.08%

Total Harmonic Distortion: 1.5%

Input: 70mV (line), 0.3mV (mic)

Output: 0.775V (line)

Semiconductors: 56 x transistors, 121 x diodes, 2 x IC

Dimensions: 440 x 175 x 302mm

Weight: 12kg


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re: GXC-730D

Para mejorar la calidad de sonido del Akai GXC-730D sugiero sustituir algunos componentes del ampificador del cabezal; En la tarjeta Preamp PC Board:

Para ambos canales igual.

C1=220 uF/25 Volts (100uF/16Volts)
C2=47 uF Tantálio (10/16)
C7=47 uF Tantálio (10/16)
C8=47 uF Tantálio (10/16)
C10=330pF (2.2nF 0.0022uF)
C11=100 pF (1nF 0.001uF)
R11=180 KOhms (120 KOhms)
R66=3.3KOhms (15 KOhms no 1.5 KOhms)

Obtendran mas brillo y mejores graves.

Muy agradecido con quien subio el manual.

re: GXC-730D

I'm trying to replace the belts in my deck. Is there anywhere that gives a step by step installation of these belts without taking it all apart. I don't even see pictures of all three belts in the schematics....or maybe I'm missing something. thanks!!!

re: GXC-730D

Having the same problem. Have you had any luck finding info?

When I got my GXC-730D it was

When I got my GXC-730D it was in pieces in a cardboard box. I now have it reassembled, and am trying to get it fully functional again.

If your tape direction indicator lights are burned out, as mine were, you can build replacements with parts from Radio Shack, you need:

276-0017 5mm High Brightness White LED (Package of 2)
271-153 1k Ohm Metal Oxide Resistors (Package of 2)

Akai GXC-730D plays backwards in reverse

I have just downloaded the service manual and have not begun working on this excellent cassette deck. I suspect the problem may be cleared with a good cleaning and lubrication. Has anyone had this problem of playing sound backwards when in reverse direction playback?

stuthridge's picture

Reverse playback issue

I had the exact same issue. I found that it was due to bad (dirty) connections on SW2 slide switch, which is located on the amplifier board and is the middle switch of the 3 slide switches. I sprayed contact cleaner inside the switch and actuated it several times and the issue was resolved. Did you find this was your issue also? I know your message was left a long time ago, but others may find the solution useful.

GXC-730 Plays Backwards in Reverse

I just looked at the schematics and parts layout and it would appear that there is a lever that moves the head up and down with the change of direction. That lever may be binding, I'd check that while its playing and see if you can move it up or down and it should start playing correctly. If this is the problem lube that lever so it moves easily up and down. That should fix your problem. Tom

GXC-730 Plays backwards in reverse

The first thing I'd check would be the head, see if it's a 2 channel or 4 channel head, if it's a 2 channel the the head is not repostioning itself for reverse play. If it's a 4 channel head there would be a relay that switches to the other set of channels in the reverse mode. I've never seen this unit so this is my best guess. I may be way out of the ball park but I'm just trying to help. Tom

Service manual download...nice!!

no technical data? freaking schematics what more do you need? specs are found other places I needed to know how this thing is wired and designed, I have a no power up and found out there is a switch for 220/110 (I figured that the broken thing was a switch but it's nice to know it's not a shorting lug) that is broken.
I can now fix this thing that was found on the curb!!! fools, it's a nice deck, I can't wait to get it rolling again!!!

Akai GXC-730D, service manual

There is no technical data :(

Akai GXC-730D, service manual - There is no technical data

It a standard service manual, I downloaded it, printed it, and used it to repair & service my Akai GXC-730D. It provides all the information needed to service and repair the unit. I cannot understand your statement "There is no technical data", that's all it contains!

Jim Simmons

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