Read Panasonic KX-TG7227UAJ / KX-TG7227UAM / KX-TG7227UAS / KX-TG7227UAT / KX-TG7228UAS / KX-TG7228UAT / KX-TGA721RUM / KX-TGA721RUS / KX-TGA721RUT / KX-TGA721UAJ / KX-TGA721UAM / KX-TGA721UAS / KX-TGA721UAT Service Manual online
9
KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
4.2.2.
Power Supply Circuit
The power is supplied to the DECT BBIC, RF Module, EEPROM and Charge Contact from AC Adaptor (+6.5 V) as shown in
Fig.101. The power supply is as follows;
Fig.101. The power supply is as follows;
• DECT BBIC (IC7):
CN2 (+6.5 V)
→ IC1 → Q9 → IC7
CN2 (+6.5 V)
→ IC1 → Q8 → IC7
• RF Module (IC10):
CN2 (+6.5 V)
→ IC1 → Q8 → IC10 (Radio Transceiver) (Digital)
CN2 (+6.5 V)
→ IC1 → Q9 → IC10 (Radio Transceiver) (Analog)
CN2 (+6.5 V)
→ IC1 → R125 → IC10 (Power AMP)
• EEPROM (IC5):
CN2 (+6.5 V)
→ IC1 → Q9 → IC5
• FLASH MEMORY (IC11):
CN2 (+6.5 V)
→ IC1 → IC11
• TAM Companion (IC8):
CN2 (+6.5 V)
→ IC1 → Q9 → IC8
CN2 (+6.5 V)
→ IC1 → Q8 → IC8
• Charge Contact (TP16):
CN2 (+6.5 V)
→ R57 → R56 → R55 → D22 → TP16
<Fig.101>
Click on the first or last page to see other KX-TG7227UAJ / KX-TG7227UAM / KX-TG7227UAS / KX-TG7227UAT / KX-TG7228UAS / KX-TG7228UAT / KX-TGA721RUM / KX-TGA721RUS / KX-TGA721RUT / KX-TGA721UAJ / KX-TGA721UAM / KX-TGA721UAS / KX-TGA721UAT service manuals if exist.