Power Supply Circuit - Panasonic KX-TG1843ALS Service Manual

KX-TG1843ALS / KX-TGA122AZS / KX-TGA121AZS

15.2. Power Supply Circuit

The power is supplied to the DECT BBIC, RF Module, EEPROM and Charge Contact from AC Adaptor (+6V) as shown in
Fig.101. The power supply is as follows;
• • • • DECT BBIC (IC4):
CN2 (+6V) → D1 → IC1 → Q2 → IC4 (3.0V)
CN2 (+6V) → D1 → IC1 → Q3 → IC4 (1.8V)
• • • • RF Module (IC2):
CN2 (+6V) → D1 → IC11 → IC2 (2.5V)
• • • • EEPROM (IC3):
CN2 (+6V) → D1 → IC1 → Q2 → IC3 (3.0V)
• • • • FLASH MEMORY (IC8):
CN2 (+6V) → D1 → IC1 → Q2 → IC8 (3.0V)
• • • • SP AMP (IC7):
CN2 (+6V) → D1 → IC1 → IC7 (4.0V)
• • • • TAM FLASH MEMORY (IC6):
CN2 (+6V) → D1 → IC1 → Q2 → IC6 (3.0V)
• • • • LOGIC IC (IC9, IC10):
CN2 (+6V) → D1 → IC1 → Q2 → IC9, IC10 (3.0V)
• • • • Charge Contact (TP15):
CN2 (+6V) → D1 → R2, R4 → TP15
<Fig.101>
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