24
KX-TG6440PK/KX-TGA641S/KX-TGA641T/KX-TGA740B
4.7.3.
Charge Circuit
When the handset is put on the cradle of the base unit, the power is supplied from and CHARGE- terminals to
charge the battery via R366 or Q361. The voltage between and CHARGE- flows Q531
→
pin 38 of IC501, where
the charge is detected. Then IC501 calculates the battery consumption amount from the previous charge, and it controls Q361/
Q362/Q364 by pin 42 of IC501 until charging is complete. When charging is complete, the control pattern is switched to Trickle
charging form from Operational charging form.
Charging form
4.7.4.
Ringer and Handset SP-Phone
Summary of Contents for KX-TG6440PK
Page 2: ...2 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 28: ...28 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 4 10 Signal Route ...
Page 29: ...29 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B RF part signal route ...
Page 31: ...31 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 5 2 Display ...
Page 35: ...35 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 36: ...36 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 7 1 2 Programming using the Direct Commands ...
Page 37: ...37 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 38: ...38 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 7 2 Error Messages ...
Page 39: ...39 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 7 3 Troubleshooting ...
Page 40: ...40 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 41: ...41 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 42: ...42 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 66: ...66 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B ...
Page 67: ...67 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 11 1 2 Handset ...
Page 68: ...68 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 11 1 3 Charger Unit ...
Page 69: ...69 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B 11 2 How to Replace the Handset LCD ...
Page 89: ...89 KX TG6440PK KX TGA641S KX TGA641T KX TGA740B Memo ...