Panasonic KX-TS2358UAB / KX-TS2358UAW (serv.man3) Service Manual ▷ View online
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KX-TS2358UAB/KX-TS2358UAW
4.2.3.4.2.
Circuit operation
When the batteries are inserted into the unit, then the voltage is regulated by IC302 and power is supplied to the CPU. The unit
starts operating soon after the voltage goes beyond point A in the voltage diagram.
starts operating soon after the voltage goes beyond point A in the voltage diagram.
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KX-TS2358UAB/KX-TS2358UAW
4.2.4.
Caller ID Detect Circuit
4.2.4.1.
Function (FSK signal)
The caller ID is a chargeable ID which the user of a telephone circuit obtains by entering a contract with the telephone company
to utilize a caller ID service. For this reason, the operation of this circuit assumes that a caller ID service contract has been
entered for the circuit being used.
The Caller-ID data from exchange is supplied to the telephone using the method of FSK and displayed on LCD of the unit.
to utilize a caller ID service. For this reason, the operation of this circuit assumes that a caller ID service contract has been
entered for the circuit being used.
The Caller-ID data from exchange is supplied to the telephone using the method of FSK and displayed on LCD of the unit.
• FSK (Frequency Shift Keying) format
4.2.4.2.
Circuit operation
Caller ID
Caller ID signal is sent through the circuit via the following path:
LINE
Caller ID signal is sent through the circuit via the following path:
LINE
→ C501/C502 → C551/C552 → R551/R552 → R553/R554 → IC801 (pin 92, 93)
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KX-TS2358UAB/KX-TS2358UAW
5 Location of Controls and
Components
5.1.
Location of Controls
5.2.
Display
Cross Reference:
Battery Installation and Replacement (P.14)
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KX-TS2358UAB/KX-TS2358UAW
6 Installation Instructions
6.1.
Connections
6.2.
Connecting a Communication Device
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