KX-TG8621UAM, KX-TGA860RUM - Panasonic Telephone Service Manual (repair manual). Page 9

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9
KX-TG8621UAM/KX-TGA860RUM
4.2.2.
Power Supply Circuit
The power is supplied to the DECT BBIC, QSPI FLASH MEMORY and EEPROM from AC Adaptor (+5.5 V) as shown in
Fig.101. The power supply is as follows;
• DECT BBIC (IC7): 
DC Jack (+5.5 V) 
 IC2  IC7
DC Jack (+5.5 V) 
 IC2  Q9  IC7
DC Jack (+5.5 V) 
 IC2  Q8  IC7
• EEPROM (IC401): 
DC Jack (+5.5 V) 
 IC2  IC7 IC401
• FLASH MEMORY (IC421): 
DC Jack (+5.5 V) 
 IC2 IC7 IC421
• QSPI FLASH MEMORY (IC431): 
DC Jack (+5.5 V) 
 IC2  IC7  IC431 
<Fig.101>
AC Adaptor 
DCP
IC2
Q9
IC7 
IC421
IC401
IC431
5.5 V 
1.8 V 
3.0 V 
3.0 V 
Q8
2.4 V 
DC
Jack
2.85 V 
DCM
1
2
3
On
DC 
S
1.8 V
Reset
(IC7_77pin)
Off
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