Panasonic KX-TR320EXF, Service Manual

Page: 19 / 53

1. Remove the (6) screws of rear cabinet.
2. Unsolder the ANT lead wire, and solder the cable of Frequency
counter and Linear Detector.
3. Supply DC4.5V using a DC power supply.
4. Connect the AF Generator output to TP-MIC isolation capacitor's
free lead.
5. Solder the chip jumper (part No. ERJ3GEY0R00) to J1 point (refer
to page 21).
6. POWER ON.
7. Press TALK switch.
8. Press Switch 12 times.
9. Press TALK switch three times [The unit becomes test mode
(CH1, code1)].
10. The unit goes into the continuous TALK mode.
Note: Test mode is the special mode that is set to confirm the fundamental operation.
16. Adjustment and Measurement Points
17. EXPLANATION OF 2-WAY RADIO
Different from a telephone, 2-Way radio is a basic radio which transmitter and receiver operates
alternately. Therefore the simultaneous both-directed communication (Duplex) like a cordless
telephone is not provided. One-way half duplex type is employed. Transmitting can be done
while pushing the TALK switch, and receiving is stopped for that time. The modulation type is
the normal FM (F3E) type which modulates the narrow band range. Using this tone signal of
300Hz or less, the circuit which operates the tone squelch and prevent the jammed
communication is provided. This is called CTCSS. CTCSS: Continuous Tone Controlled
Squelch System.