Panasonic KX-TCD420GS Service Manual page 62

- Amplifier for transmission and reception
- EEPROM: IC4
- Temporary operating parameters (for RF, etc.)
- Flash PROM: IC7
- 2M bit
- Operational Firmware for CPU
- Serial Flash ROM: IC6
- 4M bit
- Audio data for TAM operation
- Additionally,
- Power Supply Circuit (+4.0V, +2.65V output)
- Crystal Circuit (10.368MHz)
- Charge Circuit
- Telephone Line Interface Circuit
20.2. Power Supply Circuit
The power is supplied to the DECT BBIC, RF Module, EEPROM, Relay Coil, LED and Charge Contact
from AC Adaptor (+6V) as shown in Fig.101. The power supply is as follows;
- DECT BBIC (IC8): J1(+6V)
- RF Module (IC9): J1(+6V)
- EEPROM (IC4): J1(+6V)
- LED (LED1): J1(+6V)
- Charge Contact (TP13): J1(+6V)
D4 IC2
D4 IC2
D4 IC2
D4 IC2 R57
D4
<Fig.101>
58
IC3 IC8
IC9
IC3 IC4
LED1
R59, R60 TP13
IC6, IC7