TM-642A_Service_Manual维修维护手册

144/220 MHz FM MULTI BANDERKENWOODTM-642ABRyan Frelds wqcRBRYan Bryan Felds.neTSERVICE MANUAL1994-6 PRINTED IN JAPANB51-8275-00(B)450MicrophoneT91-0397-05)Knob (SQL)(K29-4808-04)Metallic cabinet (TOP)Panel ass'y(A01-2068-03)(A62-0309-03)99981948/697022H980Knob (MHz)Knob (ENC)Panel ass'yKnob ass'y(VOL)(K29-4806-04)(K29-4805-04)(A62-0219-03(K29-4840-04)This service manual describes mainly about the partslist.the schematic diagram and the PC board ofTM-642A.For the circuit description and thesemiconductor information,refer to the service manualotTM742AVE,TM-942A(B51-8192-00).CONTENTSOVERVIEW......2PC BOARD VIEWS .........43PARTS LIST........3144MTX-RX UNIT(X573580-12).43EXPLODED VIEW.............21SCHEMATIC DIAGRAM......................47PACKING.25144MTX-RX UNIT(X57-3580-12)..47ADJUSTMENT.........26PC BOARD VIEWS.49PC BOARD VIEWS..................31220MTX-RX UNIT(X573810-10).49C0 NTROL UNIT(X53-3460-11)31SCHEMATIC DIAGRAM..............................53DISPLAY UNIT (X54-3130-11)....35220MTX-RX UNIT(X573810-10).53SCHEMATIC DIAGRAM.........................39BLOCK DIAGRAM..................55CONTROL UNIT39LEVEL DIAGRAM....57DISPLAY UNIT.........39SPECIFICATIONS..................BACK COVER