Power Supply Circuit - Panasonic KX-TG8421EB Service Manual

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;
• DECT BBIC (IC7):
DC Jack (+6.5 V) →D1→ IC1 → IC7
DC Jack (+6.5 V) →D1→ IC1 → Q9 → IC7
DC Jack (+6.5 V) →D1→ IC1 → Q8 → IC7
• RF Power Amp. (IC801):
DC Jack (+6.5 V) →D1→ IC1 → IC801 (Power AMP)
• EEPROM (IC401):
DC Jack (+6.5 V) →D1→ IC1 → IC7→ IC401
• FLASH MEMORY (IC421):
DC Jack (+6.5 V) →D1→ IC1→ IC7→ IC421
• Charge Contact (TP16):
DC Jack (+6.5 V) →D1→ R56 → R55 → D22→ TP16
KX-TG8421E/KX-TG8422E/KX-TG8423E/KX-TG8424E/KX-TGA840E
<Fig.101>
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