I N S I D E   V I E W S
TOUCH   TONE  WALL  PHONE
WESTERN ELECTRIC   MODEL  2554 BMP

Unwind 2 SCREWS behind the number plate and LIFT THE COVER ...




   WIRE-DIAGRAM of this  »2554_BMP«  Western Electric Wall Phone
 with No.35 8-Wire TouchTone-KeyBoard, No.4228 Network & Mini-Bell
( adapted from R.O.Meyer's Book "Old-Time Telephones!", Fig.19-17 )

R E P A I R   J O B :
---------------------
   (1st) Soldering the broken WHITE WIRE (= black taped )
   (2nd) COLUMN- & ROW-CONTACTS of the KEYBOARD failed;
         Application of CONTACT-SPRAY made it working again! 

              

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impressum:
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© C.HAMANN    http://public.beuth-hochschule.de/~hamann    02/02/17