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KX-TG1711UAB, KX-TG1711UAJ, KX-TG1711UAW, KX-TGA171RUB, KX-TGA171RUJ, KX-TGA171RUW (serv.man2) - Panasonic Telephone Service Manual Supplement (repair manual). Page 11

Read Panasonic KX-TG1711UAB / KX-TG1711UAJ / KX-TG1711UAW / KX-TGA171RUB / KX-TGA171RUJ / KX-TGA171RUW (serv.man2) Service Manual Supplement online

11
3.2.3.
Bell Reception
[Changed from original section "9.1.7. Bell Reception"]
3.2.3.1.
Handset
Cross Reference:
Telephone Line Interface
Check Link (P.9)
How to Check the Handset Speaker or Receiver
Does bell sound from BUZZER?
Replace with the new BUZZER.
Check around R114, D104, Q104, Q105.
When bell signal coming, is there bell sound signal 
at RA102 (P1.1) and RA102 (TXD)?
NO
NO
YES
When bell signal coming, is there bell sound signal
at D104 (between A and K)?
YES
Check link in Check Link, and around Career module.
NO
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