2000 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. 1. TALK RANGE The unit is designed to maximize performance and improve transmission range in the field. However, the talk range depends on your surrounding environment. It is necessary for the unit to have a clean "line-of-sight"...
3. DISPLAY 4. BATTERY INSTALLATION The unit requires 3 AA (LR6) size alkaline batteries (not included). / The battery life is about 30 hours. (Based on a usage duty of 5% receive, 5% talk, 90% standby.) - Make sure that the unit is powered OFF before replacing the batteries.
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Install (or replace) the batteries using the correct polarity (+, -). Close the cover. Battery precautions: The batteries should be used correctly, otherwise the unit may be damaged by battery leakage. - Do not mix different types of batteries. - Do not charge, short-circuit, disassemble or heat batteries, and do not dispose of batteries in fire.
temperature. 5. OPERATION The unit has 8 operating frequency channels and 38 group codes. To talk to others, all users in your group must be using the same channel and group code. 5.1. Selecting the Operating Channel 5.2. Selecting the Group Code (CTCSS)
6. USING THE OPTIONS 6.1. To Enjoy Hands-Free Operation...
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6.2. For Use with a Car Battery 7. DISASSEMBLY INSTRUCTIONS...
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Fig. To remove Remove —. Battery Cover Remove the Battery Cover. Rear Cabinet Screws (2X10) ........(A)X2 Screws (2X7) ........(B)X4 RF Block Unsolder the Antenna Lead Wire and shield case. Remove the RF Block. CPU P.C. Board Unsolder the Main and Sub Speaker Lead Wires.
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8. HOW TO CHECK SPLASH RESISTANCE 9. CPU DATA...
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10. EXPLANATION OF IC TERMINALS (BASE BAND LSI IC11) 11. EXPLANATION OF IC TERMINALS (CTCSS IC IC13 PIN)
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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.
Simultaneous receiving can be done with not only specified one transceiver but many units if only the receiving channel and CTCSS code meet on RX side. Therefore, one person of a group can speak to all. The TX/RX frequencies and channels are same. CTCSS code is provided with 38 codes from 67Hz to 250.3Hz (refer to 14.1.
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19. EXPLANATION OF BLOCK DIAGRAM 19.1. Audio Frequency Circuit and Control Circuit Circuit Operation: Transmission 2 types of voice input are provided: built-in microphone and optional external microphone. The signal input through the microphone is amplified at the compressor (IC11), then connected to the next circuit.
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19.2. RX Operation Circuit Operation: The receiving signal from antenna ( /4) is switched by the antenna switch (IC4), and led to RF amplifiers (Q1) to be amplified. Passing through the SAW filter (446 MHz), the signal is mixed with the 1st local at the 1st mixer (IC2) to produce the 1st IF frequency of 21.3 MHz. Then it is amplified by IF amplifier and led to IF demodulation circuit (IC1) through crystal filter (21.3 MHz).
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3V is supplied to TXP of Pin 11 of CN5, RX of pin 10 of CN5 becomes Low (0V), Q12 is turned on, and the reception circuit operates. 1. The signal received at the antenna is input to pin 5 of antenna switch IC4 through the low-pass filter.
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9. At the same time, the noise of the AF signal is detected by squelch circuit in IC1 and the output is sent from pin 19 of IC1. CPU Board: When receiving continuously, IC9 (C3V) is turned ON and IC11 and IC13 are set to RX operation. When receiving periodically, ON/OFF of IC9 (C3V) is controlled.
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connected, the built-in speakers (Main, Sub) is cut off and the external speaker is driven. 20.2. TX Operation RF Board: During TX operation 3V is supplied from TXP of pin 11 of CN5 causing TX of pin 12 to Low (0V) and Q14 to be turned ON to work the TX circuit.
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amplified, then rectified by diode D4. The rectified DC level is input to pin 3 of IC14 and amplified to be output from pin 1. (DC output can be chosen according to the loudness of voice input.) The output from pin 1 is supplied to pin 42 of CPU (IC17), and read by A/D converter to become the trigger of transmission.
and boots the CPU normally. Voltage Regulator IC: IC8 on CPU board is the voltage regulator IC with the low-consumption current of 3 volt and it always supplies 3V to CPU. Voltage Regulator IC: IC9 on CPU board is the voltage regulator IC with the low-consumption current of 3 volt equipped with control terminal.
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Selecting CH1 21.1.1. RF Output Is Not Output To ANT Terminal. 21.1.2. Modulation Does Not Work In Transmission. 21.2. Transmission Trouble/ AF Circuit Condition Channel No. Setup Standard Modulation (1KHz) Input C3V Applied MIC Input Check TXP (3V): Pin11 (CN5) TX (LOW): Pin12 (CN5) 21.2.1.
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21.3. Control Circuit Condition Voltage (4.5V) Supplied from External Power Source 21.3.1. Power Supply Will Not Be ON. 21.4. Reception Trouble/ RF Circuit Condition Channel No. Setup SSG Frequency Setup Standard Modulation (1KHz) C3V Normally Applied CN5 (Pin10: RX) LOW 21.4.1.
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21.5. Reception Trouble/ AF Circuit Condition Channel No. Setup SSG Frequency Setup Standard Modulation (1KHz) C3V Applied AF Signal: Pin3 (CN4) Check 21.5.1. PTT Mode...
26. REPLACEMENT PARTS LIST This replacement parts list is for KX-TR320EXF/KX-TR320EXS only. Refer to the simplified manual (cover) for other areas. Notes: 1. The marking (RTL) indicates that the Retention Time is limited for this item. After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time.
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After the end of this period, the assembly will no longer be available. 2. Important safety notice / Components identified by the mark have special characteristics important for safety. When replacing any of these components, use only manufacture's specified parts. 3.