Panasonic KX-TG8421FXB Service Manual page 47

9.1.8. Bell Reception
9.1.8.1. Base Unit
9.1.8.2. Handset
Cross Reference:
Telephone Line Interface (P.10)
Check Link (P.39)
How to Check the Handset Speaker or Receiver (P.71)
9.1.9. Check TAM Operation
Cross Reference:
Power Supply Circuit (P.9)
Note:
(*1) When replacing FLASH MEMORY (IC421), TAM data need to be written to it. Refer to Base Unit of Things to Do after
Replacing IC or X'tal (P.68)
KX-TG8421FXB/KX-TG8421FXN/KX-TGA840FXB/KX-TGA840FXN
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