Kenwood_TKR-720_A_N_维修维护电器原理图手册_1994

VHF DESK-TOP REPEATERKENWOODTKR-720/N/ASERVICE MANUALREVISED1994-7 PRINTED IN JAPANB51-8088-10(N)750This service manual is the same as the service manual (B51-8088-00)for TKR-720 (K,M,K2,M2)destinations except that this manual contains new items for(TKR-720N M,M2,TKR-720A:M,M2)destinations.Use it together with the previous service manual (B51-8088-00).Dressing plateDressing platePanelCase (Upper}(A21.1519-03:TKR-720/N(A21-1520-03):TKR-720/N Knob (TAKE OVER.REPEAT,MOND)(A20-2666-111(A01-1059-011B03-0578-03):TKR-720A(B03-0579-03):TTKR-720AK29-3148-04)X3KENWOODKnob (POWER)FootKnob (VOL,SOL)Knob (CH)Rectangular receptacle (MIC)K29-3146-049J02-0049.14}x4(K29-3147-03)×2(K29-3075-03):TKR-720A{E08-0673-05)onlyPhoto is TKR-720A type.CONTENTSGENERAL.2RXVC0:Z2(X58-3290-XX0.68SYSTEM SET-UP.TXVC0:Z5X58-3790-XX0.69INSTALLATON.......5MIC AMP:Z7(X59-3210-10).70CONVERSION.......8f:Z8X59-3220-10).71DISASSEMBLY FOR REPAIR..................1BPF/VCA:Z9(X59-3230-10)4,72BLOCK DIAGRAM......17SIGNALING UNIT (X52-3140-10).....................73CIRCUIT DESCRIPTION.........................2.AVR UNIT(以43-3040-10》76SEMICONDUCTOR DATA….28DRIVE UNIT (X45-3310-XX)...4477DESCRIPTION OF COMPONENTS....................35FINAL UNIT (X45-3320-XX).........78PARTS LIST37DISPLAY UNIT (X54-3070-XX)...................9EXPLODED VEW..........58TX-RX UNIT (X57-3760-XX)...............8PACKING60SCHEMATIC DIAGRAM....................................83ADJUSTMENT......4.61TERMINAL FUNCTION.......8PC BOARD VIEWS CIRCUIT DIAGRAMSKMC-9 (BASE MICROPHONE)................89RX PLL Z1,TX PLL Z4 [X58-3140-XX).............67SPECIFICATIONS....BACK COVER