Kenwood TK-785 Service Manual
Also see for TK-785: Instruction manual
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Contents
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46TK-785 ADJUSTMENTAdjustment Location Switch Adjustment Point (K,E) Note• Flash memoryThe firmware program (User mode, Test mode, Tuningmode, etc.), the data programmed and security number(MPT serial number) by the FPU (KPG-62D) for the flashmemory, is stored in memory. When parts are changed,program the data again.• EEPROMThe tuning data (Deviation, Squelch, etc.) for theEEPROM, is stored in memory. When parts are changed,readjust the transceiver. Repair Jig (Chassis)Use jig (Part No. : A10-4010-02) for repairing the TK-785.The jig facilitates the voltage check when the voltage on thecomponent side TX-RX unit is checked during repairs.MeasurementTest-equipment Unit TerminalAdjustmentUnit Parts Method Specifications/RemarksConditionItem1. PLL lock 1) Set test mode DVM TX-RX TP1 PLL TC101 1.5V (Receive) ± 0.1Vvoltage CH : CH3 - Sig1 Power meter (A/2)PTT : OFF (Receive) TC102 1.5V (Transmit)PTT : ON (Transmit)2) CH : CH2 - Sig1 Check 8.0V or lessPTT : OFF (Receive)PTT : ON (Transmit)Common SectionL203L204L202L6VR1TX-RX UNIT (A/2)PLL/VCOTC101TP1TC102L6VR1TX-RX UNIT (A/2)PLL/VCOTC101TP1TC102L207L203PowerswitchTX/RXindicatorMicrophonejack A B C D CALLVolumeup/downSystemup/down Adjustment Point (M) |
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