I have a pair but alas no circuit diagram, they are both working fine and show good 50k square waves stable on the scope and have equal low noise, but one is warm and the other is cool, so i need to do a bias adjustment, and also dc offset adjustment.
I've found 3 pots on the input/driver board, which I have no idea which ones what. One has to be for bias which i need to do, the other for DC offset which i also need to do and the third I have no idea what it does.
Does anyone have the info or a diagram on which does what. It's so dark and dingy down in there and cramped, I can't even see the emitter resistors so i can check the bias across them.
Your help will be grateful
Cheers George
I've found 3 pots on the input/driver board, which I have no idea which ones what. One has to be for bias which i need to do, the other for DC offset which i also need to do and the third I have no idea what it does.
Does anyone have the info or a diagram on which does what. It's so dark and dingy down in there and cramped, I can't even see the emitter resistors so i can check the bias across them.
Your help will be grateful
Cheers George
That would be great Mike, I've sent you a PM so you have my email, save trying to post, with the 100k limit.
Just found out that it has to go through the administrators to get to you, I'll give it a go.
Cheers George
Just found out that it has to go through the administrators to get to you, I'll give it a go.
Cheers George
George,
I have manuals for both the L-07M and the L-07M II. I did not receive a PM. The adjustments include: VRe1, fine offset adj; VRe2, course offset adj; VRe3, bias adj. The major differences between the two models appears to be the II version went to higher frequency outputs, they went to a double Darlington from a tripple and the bias compensation went from six diodes to one, with changes to the trimmer values.
Regards, Mike.
I have manuals for both the L-07M and the L-07M II. I did not receive a PM. The adjustments include: VRe1, fine offset adj; VRe2, course offset adj; VRe3, bias adj. The major differences between the two models appears to be the II version went to higher frequency outputs, they went to a double Darlington from a tripple and the bias compensation went from six diodes to one, with changes to the trimmer values.
Regards, Mike.
Thanks Mike, that will get me out of trouble.
And thanks for the link James will d/l, good site to have in favourites.
Cheers George
And thanks for the link James will d/l, good site to have in favourites.
Cheers George
Hi James,
I just had a look on the link, couldn't find the information. Does it disappear when someone downloads it?
-Chris
I just had a look on the link, couldn't find the information. Does it disappear when someone downloads it?
-Chris
Chris,
It's there. The default filter is set to "today", just set it to "all", ctrl-f to look for "L-07".
Cheers
Clem
ps: I haven't figured out how to download though... but I use Opera, it doesn't seem to work with some sites...
It's there. The default filter is set to "today", just set it to "all", ctrl-f to look for "L-07".
Cheers
Clem
ps: I haven't figured out how to download though... but I use Opera, it doesn't seem to work with some sites...
Hi Clem,
Thanks very much for the hint.
The rest is easy, register. A bit on the right you will seen a kind of down arrow, click it and the PDF opens in a new window.
So I did find and download the manual. A little unclear but way better than nothing.
James,
Thank you.
-Chris
Thanks very much for the hint.
The rest is easy, register. A bit on the right you will seen a kind of down arrow, click it and the PDF opens in a new window.
So I did find and download the manual. A little unclear but way better than nothing.
James,
Thank you.
-Chris
anatech said:
Hi Chris,
Your welcome. So, how many heads does it take to download a PDF... 🙂 🙂 🙂
James, many thanks for the link, I think it will come in handy...
Cheers
Clem
Anyone have a copy of the L-07M service manual that they could email me? The ShareFX copy is only available to premium members now.
Ebbe,
Thanks for uploading, but I can't seem to get the document to come up. Not sure if Esnips takes awhile to get the download ready or if it was corrupted somehow. I'll try later.
Thanks for uploading, but I can't seem to get the document to come up. Not sure if Esnips takes awhile to get the download ready or if it was corrupted somehow. I'll try later.
I just tried to open it myself and had some trouble. Then found out that if i close my download manager, then things are ok.😕
Do you use download manager ? If not, then let me have your e-mail add, i'll send it the "proper" way.
Best regards
Ebbe
Do you use download manager ? If not, then let me have your e-mail add, i'll send it the "proper" way.
Best regards
Ebbe
Hi Ebbe,
I can't download the Kenwood link. The other one was fine. Tried a couple ways, no joy. Netscape 7.2.
-Chris
I can't download the Kenwood link. The other one was fine. Tried a couple ways, no joy. Netscape 7.2.
-Chris
Hi Chris.
i don't know what's the matter with Esnips, but it does tease some people 😕
I can send it to your e-mail address if you give me one, but i'm afraid it's he same version you found at Sharefx, that's where i got my copy 😀
Anyway, i will give it a try if i have an address.
Best regards
Ebbe
i don't know what's the matter with Esnips, but it does tease some people 😕
I can send it to your e-mail address if you give me one, but i'm afraid it's he same version you found at Sharefx, that's where i got my copy 😀
Anyway, i will give it a try if i have an address.
Best regards
Ebbe
Hi Ebbe,
Okay, I have it in that case. Thank you very much for posting it for others.
I wonder what's up with Esnips?? Oh well. I didn't have the other file, now I do.
-Chris
Okay, I have it in that case. Thank you very much for posting it for others.
I wonder what's up with Esnips?? Oh well. I didn't have the other file, now I do.
-Chris