Kenwood TK-860HG Service Manual

Contents

25ADJUSTMENTMeasurementTest-equipment Unit TerminalAdjustmentUnit Parts Method Specifications/RemarksConditionItemTK-860HG/862HGReceiver Section1. Discriminator 1) Set test mode SSG Rear ANT TX-RX L5 AF output maximum.• Wide CH : CH1 - Sig1 panel (A/2)SSG output : –53dBm/501μV AF VTVM ACCSSG MOD : 3kHz Oscilloscope (EXT.SP)AF : 1.4V/4Ω2. Sensitivity 1) Set test mode SSG Rear ANT TX-RX L13 RSSI voltage• Wide Select “SENS” in tuning mode. panel (A/2) L22 maximum.“S.E.N.S._.” AF VTVM ACCAdjust [250] Distortion (EXT.SP)SSG freq’ : 489.950MHz K,M meter: 511.950MHz K2 Oscilloscope: 429.950MHz K3,M3SSG output : –116dBm/0.35μV AGSSG MOD : 3kHzAF output : 1V/4Ω DVM TX-RX RSSI(A/2)2) “S.ENS” Front CH / RSSI voltageAdjust [***] panel maximum.SSG freq’ : 450.050MHz K,M: 485.050MHz K2: 400.050MHz K3,M33) “S.E.N.S”Adjust [***]SSG freq’ : 470.050MHz K,M: 498.550MHz K2: 415.050MHz K3,M33. Squelch 3 1) Set test mode Adjust to the• Wide Select “SQL3” in tuning mode. squelch threshold“S.QL3” point.Adjust [***]SSG freq’ : 450.050MHz K,M: 485.050MHz K2: 400.050MHz K3,M3SSG output : –125dBm/0.12μVSSG MOD : 3kHz (Wide)1.5kHz (Narrow)MeasurementTest-equipment Unit TerminalAdjustmentUnit Parts Method Specifications/RemarksConditionItemCommon Section Since the TK-862HG cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment.1. PLL lock 1) Set test mode DVM TX-RX CV PLL TC106 7.5V ± 0.1Vvoltage CH : CH3 - Sig1 Power meter (A/2)RX F. conterTX 2) PTT : ON (Transmit) TC109 7.5VRX 3) CH : CH2 - Sig1 Check 0.9V or moreAUX : ON (talk-around mode)TX 4) PTT : ON (Transmit) 0.9V or more