Read Panasonic KX-TC1005RUC / KX-TC1005RUB / KX-TC1005RUW Service Manual online
26 NEW CIRCUIT OPERATION (HANDSET)
26.1. RECEIVER RF IF CIRCUIT
26.1.1. Circuit Operation:
The signal of 30 MHz band (30.075 MHz~30.300 MHz) received at ANT is filtered by DUP101, and it is input to Pin 42 of IC101.
The RX VCO which oscillates at T201 and IC101 is locked to 1st Local frequency by PLL inside IC101. (PLL is controlled by serial
data output from Pin 28, 29 and 30 of IC901.)
An input signal from Pin 42 of IC101 and 1st Local frequency output from RX VCO are mixed inside IC101, pass through CF1, and
1st IF frequency of 10.7 MHz is generated.
Further, 10.7 MHz and 11.150 MHz that oscillated at X101, passes through MIXER inside IC101 and is filtered at CF2 and outputs
2nd IF 450 kHz.
The RX VCO which oscillates at T201 and IC101 is locked to 1st Local frequency by PLL inside IC101. (PLL is controlled by serial
data output from Pin 28, 29 and 30 of IC901.)
An input signal from Pin 42 of IC101 and 1st Local frequency output from RX VCO are mixed inside IC101, pass through CF1, and
1st IF frequency of 10.7 MHz is generated.
Further, 10.7 MHz and 11.150 MHz that oscillated at X101, passes through MIXER inside IC101 and is filtered at CF2 and outputs
2nd IF 450 kHz.
46
KX-TC1005RUC / KX-TC1005RUB / KX-TC1005RUW
Click on the first or last page to see other KX-TC1005RUC / KX-TC1005RUB / KX-TC1005RUW service manuals if exist.