THIS »TRIMLINE« IS NOT SENSITIVE TO POLARITY OF THE TEL.-OUTLET !! INSIDE A TOUCH TONE LED »TRIMLINE« WesternElectric / USA (1979) ******************************************************************* The keys are illuminated via the telephone line by a LED inside the Keyboard-Box. I got this » TRIMLINE « because its dialing was not working right. I took the telephone apart and found: The COLUMN- & ROW-CONTACTS on sides of the KEYBOARD-BOX were oxidized & failed. Application of an ELECTRONIC-CONTACT-SPRAY made it working again! R E M A R K S : --------------- To open the BASE, remove the NUMBER-PLATE and unscrew the TOP-PART. You see the Main-Switch & Mini-Bell. Open the HAND-SET by removing its NUMBER-PLATE to get access to 2 SCREWS holding the COVER. The picture shows the FLEXIBLE PRINT-BOARD in the mirror. Contacts to Keyboard, Transmitter & Receiver are made by 5 +2 +2 SCREWS. The 4 SCREWS on the edges are holding the INNER BASE UNIT in place. On the FLEXIBLE PRINT-BOARD is to read: 1016B NET WE / 6-79 Have a look at a DIAL Version ... impressum: ******************************************************************* © C.HAMANN http://public.BHT-Berlin.de/hamann 02/03/17 |