Panasonic KX-A142EXM - Page 56

- Detector
- Compress/Expander
- First/Second Mixer
- Amplifier for transmission and reception
- EEPROM: IC4
- Temporary operating parameters (for RF, etc.)
Note:
Refer to EEPROM LAYOUT (BASE UNIT) ().
- 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) D4 IC2 IC3 IC8 IC6, IC7
- RF Module (IC9): J1(+6V) D4 IC2 IC9
- EEPROM (IC4): J1(+6V) D4 IC2 IC3 IC4
- LED (LED1): J1(+6V) D4 IC2 R57 LED1
- Charge Contact (TP13): J1(+6V) D4 R59, R60 TP13
<Fig.101>
56
www.freeservicemanuals.info
1/2/2015
Digitized in Heiloo, Holland