Introduction

Overview of the current wiring of this 1935 D1 202 Desk Phone with 634BA-3 Subset in photos and charts.

For wiring diagrams of other phone models or years, see the Documents & Resources and Links pages.

Background

As received, the phone could not make or receive calls.

The original connections included a 623D connecting jack inside the subset and a number of wire conductors "out of order" in the modular plugs.

For more information, see the topic posted to the Classic Rotary Phone Forums here:

• D1 202 with 634BA-3 Subset Troubleshooting

The original wiring can also be seen on this page here: Wiring (Original)

The handset, subset, and line cords have all been replaced.

On This Page

• D1 202 Base Wiring
  • Handset Cord Wiring
  • Mounting Cord Wiring (from Subset)
  • 4H Dial Wiring
  • Hook Switch Wiring
• 634BA-3 Subset Wiring
  • Mounting Cord Wiring (to Phone)
  • Line Cord Wiring (to Wall)
  • Ringer Wiring
  • 449B 0.5 MF Wiring (Under Wood Block)
  • 447A 2 MF Wiring (Under Metal Bar)
  • 101A Coil Wiring
  • Wood Block Wiring

4H Dial Wiring

Hook Switch Wiring

101A Coil Wiring

Wood Block Wiring

The project / repair links on this website can be found here (in order of repair):

1. Wiring (Current) Replaced handset, subset, and line cords