AkAI 707 Valve Reel to Reel help

[jascha]

Hi everyone,
Today i purchased a vintage Akai 707 valve reel to reel tape machine from an audio jumble sale in the UK. I brought it home and had a look inside....it uses 5 valves. The trouble is i need to test these valves but one of them i am not sure what it is. So far i recognize the following valves:
(2) 6AU6(T),
(1) 6X4,
(1) 6BQ5
There is another valve that i cannot quite readwhat it says on it. Does anyone have a circuit diagram of this machine that could assist me finding out more about it please or happens to know what valves it uses please? Or perhaps to whom i could ask who might know more about Akai vintage tape recorders?

many thanks indeed

 

[jpmorris]

I've never heard of the 707 before, but this is almost the only link on Google. They seem to be selling the schematics:

http://www.manuals-in-pdf.com/707-p-156771.html

..hope that's of some use.

 

[jascha]

Thanks very much. I am not sure that link will be of a tape recorder though. Not much information there.
If anybody has an M-8 Valve tape machine, can i please have an information of what valves it uses please as it looks very similar to mine, although the M-8 is Stereo. If anyone can paste a circuit diagram of the M-8 that might give me some ideas too.

Many thanks to all.