Panasonic KX-TG8421BX, Service Manual

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KX-TG8421BX/KX-TGA840BX
1.2.2. 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
<Fig.101>