Kenwood TK-863G Service Manual

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15TK-863G• OthersIf the PA and HR2 are not necessary and the speaker out-put is output to an external unit through the KCT-19, connectthe KCT-19 C connector to CN8 on the TX-RX unit (A/2).8CR21Q5Q1D2Q6Q1Q64IC9ShiftregisterIGN++––KAP-1 (SWITCH UNIT : X41-3380-20)W1123HORESBW2123PA/LISPOSPICN112 HR2NCCN2123HR1ESBCN312 PAO/LIOER1 0C5 1000PC61000PC71000PK2D1C3 0.01C11000PR3 0R4 0C21000P D2K1C4 0.01Q1Q1 : DTD114EKD1,2 : 1SS193CN3CN713+R153Audiopower ampIC13CN812SPEInternal/ExternalspeakerTX-RX UNIT (A/2)BBRNORGYELCCGRNGRNKCT-1913 10 1361215KCT-19 Terminal6 : Earth10 : HR112 : PA (HR2)Fig. 8INSTALLATION5. Emergency Mode5-1. Transceiver Modification Procedure• Install the foot switchInstall the foot switch through the KCT-19 and KCT-18.When the switch is treaded on, the radio enters the emer-gency mode.• Change the power switch circuitTX-RX unit (B/2) : Control section$R705 : Attach (R92-1252-05, 0Ω)TX-RX unit (A/2) : RF sectionR142 : Remove (RK73GB1J473J, 47kΩ)Once the transceiver is modified, it cannot be turned onand off with the power switch. The power switch turns theLCD backlight and display on and off. (The power isswitched on and off by IGNITION SENSE.)IC502CPU6Q506878825 20$R705Attach0PowerswitchMBLMBLSB Q505KeybacklightLCDIC5101 3CN5R14247KRemoveIC14KCT-1915 pinKCT-18FootswitchControl sectionTX-RX sectionOutside13 13615KCT-19 Terminal3 : Ignition sense6 : Earth15 : Foot switchFig. 9