Kenwood TK-2160 Service Manual

Also see for TK-2160: Service manual Specifications Instruction manual Instruction manual Specifications

Contents

TK-2160114) Battery Type DetectionThe transceiver automatically detects the battery type,measuring the resistance betw een the S-terminal and +terminal on the battery pack and changes the suppliedvoltage to the S-tarminal as below . The microprocessor thendetects the battery type.7. Control SystemKeys and channel selector circuit.The signal from the keys and channel selector are directlyinput to the microprocessor, as show n in fig. 13.Fig. 13 Control systemChannel selectorCPUIC805SIDE 2EN4EN3EN2EN167686970PTT PTTSWSIDE 134747576AUXSW AUX SWSW1SW2CIRCUIT DESCRIPTION / INSTALLATIONResistor value Battery type Input voltage of S-terminal1.8M Ω Li-ion 0.3~1.3V560kΩ Ni-Cd 1.3~2.6V220kΩ Ni-M H 2.6~5.0VOPEN Battery case 0~0.3VINSTALLATION1. Optional BoardRemove the TX/RX unit from the radio before installing theoptional board in the radio.The procedure for removing the TX/RX unit is described inthe DISASSEM BLY FOR REPAIR section in the ServiceM anual.Install the optional board on the back of the TX/RX unit.For details on installation of the optional board, refer toInstallation Information supplied w ith the optional board.When installing the optional board, also refer to the chart inTERM INAL FUNCTION section (page 12) given in the ServiceM anual.Note: To install and use the Scrambler Board, remove “ R601”and “ R647” from the front of the TX/RX unit.R647 R601R601R607R608R609R610R613R615R616R617R618R621 R622R623R624R625R626R627R628R629R631 R632R633R634R636R640R641R835R642R836C607R643C608C609R839R647R840C610C613C614C618C619C621C622C625R855R856C628C630C1C631C632C633 C634C4C635C636C637C640C641C642C643C645C646C648C846C847R695IC601CP8034CP808CP809CP810CP812CP813CP814R1R2R3C606L804L806R696C627C31 9101617252632+75765150CEVCC+ ++TX-RX UNIT (X57-6720-10)Component side view