|
Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
|
Thread Tools |
20th Feb 2014, 8:41 am | #1 |
Pentode
Join Date: May 2013
Location: Deal, Kent, UK.
Posts: 139
|
Diagram needed for AT3796/N1070
Looking for the wiring diagram LD133/1 for the GPO AT3796 switchboard aka N1070.
Flag drops and buzzer works when sub goes off hook but when answer cord plugged in line is dead. |
22nd Feb 2014, 8:03 pm | #3 |
Pentode
Join Date: May 2013
Location: Deal, Kent, UK.
Posts: 139
|
Re: Diagram needed for AT3796/N1070
Thanks Andrew,
I've been working from a photograph of a printout that isn't quite all in focus. Although the original print is drawn different it appears the circuit is the same. Bruce |
24th Feb 2014, 12:29 am | #4 | |
Heptode
Join Date: Jul 2007
Location: Flintshire, UK.
Posts: 707
|
Re: Diagram needed for AT3796/N1070
Quote:
The N diagram for the Switchboard AT3796 is N1093 which dates from 1935 when it replaced the earlier Switchboard AT1810 (N1090) of 1925 which again looked very similar and replaced a yet earlier version of the 10+50 style. You'll need to check to see which version you have - there should be a wiring diagram LD.... pasted inside the rear door which should be the clue - LD41 = AT3796 and LD133 for the N1070 |
|
25th Feb 2014, 7:39 am | #5 |
Pentode
Join Date: May 2013
Location: Deal, Kent, UK.
Posts: 139
|
Re: Diagram needed for AT3796/N1070
Is there a way to easily tell the difference between the two?
The back panel is missing. |