Kenwood TK-280 Service Manual

Also see for TK-280: User manual Instruction manual Instruction manual Pricing and specification manual Service manual

TK-28042ADJUSTMENTItem Condition Measurement Adjustment Specifications/Test equipment Unit Terminal Unit Parts Method Remark12.LTR 1) Adj item [FLTR] Power meter Panel ANT Panel Encoder 1.0kHz ±0.1kHzDeviation Adjust [∗∗∗] Dev meter universal knobAdjust LPF:3kHz Oscilloscope connectorHPF:OFF AG[Wide] 2) Adj item AF VTVM[L FLTR] ➞ [C FLTR] ➞ [H FLTR]Adjust [∗∗∗]PTT:ON[Narrow] 3) Adj item [n FLTR] 0.75kHz ±50HzAdjust [∗∗∗]PTT:ON13.DTMF 1) Adj item [DTMF] Wide:2.5kHz ±0.1kHzDeviation Adjust [∗∗∗] Narrow:1.25kHzAdjust LPF:15kHz[Wide] HPF:OFFPTT:ON[Narrow] 2) Adj item [n DTMF]Adjust [∗∗∗]PTT:ON14.MSK 1) Adj item [FMSK]Deviation Adjust [∗∗∗]Adjust LPF:15kHz[Wide] HPF:OFFPTT:ON[Narrow] 2) Adj item [n FMSK]Adjust [∗∗∗]PTT:ON15.TONE 1) Adj item [TONE]Deviation Adjust [∗∗∗]Adjust LPF:15kHz[Wide] HPF:OFFPTT:ON[Narrow] 2) Adj item [n TONE]Adjust [∗∗∗]PTT:ON16.BATT 1) Adj item [BATT] Power meter Panel ANT Panel Encoder After pressing BATT terminalDetection Adjust [∗∗∗] DVM BATT knob the PTT switch, voltage:6.2VWriting PTT:ON terminal confirm thatone predeter-mined numericin the range 1to 256 appearsand then press[B] key. Thatnumeric will bestored in memory.17.BATT [Panel Test Mode] Check No blinking of LEDDetection 1) CH-Sig:1-1Check BATT terminal voltage:6.5VPTT:ON2) BATT terminal voltage:5.7V Blinking of LEDPTT:ON[Panel Tuning Mode except when Panel TEST Mode is specified.]