Embedded Files
1971 Western Electric 2500 D Desk Phone
1971 Western Electric 2500 D Desk Phone
Introduction
Introduction
Overview of the current wiring of this 1971 2500 D desk phone in photos and charts.
For wiring diagrams of other phone models or years, see the Documents & Resources and Links pages.
Background
Background
As received, the phone had dial tone, but could not make or receive calls.
The wiring on this phone was changed to match the wiring diagram on page two of this document:
Three changes were made to match the above referenced wiring diagram:
- In the Four Prong Plug, the yellow conductor wire was moved from Y to G.
- On the 425 K Network, the black ringer wire was moved from K to G.
- On the 425 K Network, the red dial wire was moved from G to T.
With these wiring changes, the phone now rings and receives calls, but still cannot make calls...
Full wiring details are included below.
On This Page
On This Page
- Overview of Phone Wiring
- 425 K Network Wiring
- Line Cord Wiring
- Handset Cord Wiring
- 35Y3A Dial Wiring
- 505A Plug Wiring
- Ringer Wiring
- Hook Switch Wiring
- Repair Road Map
Overview of Phone Wiring
Overview of Phone Wiring
Top View
425 K Network Wiring
425 K Network Wiring
Overall View
Line Cord Wiring
Line Cord Wiring
- red --> L2 on 425 K Network
- green --> L1 on 425 K Network
- yellow --> G on 425 K Network
Handset Cord Wiring
Handset Cord Wiring
- white --> S on 425 K Network
- white --> R on 425 K Network
- red --> T on 425 K Network
- black --> B on 425 K Network
35Y3A Dial Wiring
35Y3A Dial Wiring
Backside of 35Y3A Dial.
- red - green --> R on 425 K Network
- orange - black --> C on 425 K Network
- blue - white --> S on 425 K Network
- blue --> B on 425 K Network
- green --> F on 425 K Network
- white --> GN on 425 K Network
- red --> G on 425 K Network ==> Moved to T on 425 K Network
- black --> RR on 425 K Network
505A Plug Wiring
505A Plug Wiring
Ringer Wiring
Ringer Wiring
- red --> L2 on 425 K Network
- slate --> K on 425 K Network
- slate / red --> A on 425 K Network
- black --> K on 425 K Network ==> Moved to G on 425 K Network
Hook Switch Wiring
Hook Switch Wiring
- black --> R on 425 K Network
- red --> S on 425 K Network
- white --> F on 425 K Network
- green --> L1 on 425 K Network
- brown --> C on 425 K Network
- yellow --> L2 on 425 K Network
- slate --> L2 on 425 K Network
Repair Road Map
Repair Road Map
The project / repair links on this website can be found here (in order of repair):
To start from the beginning, click here:
Wiring (Current) Adjusted wiring per BSP diagram
Google Sites
Report abuse