Kenwood RXD-M55-H Service Manual

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Kenwood RXD-M55-H Service Manual Manual pdf 16 page image

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S16ADJUSTMENTNo.1ITEM INPUTSETTING OUTPUTSETTING PLAYERSETTING ALIGNMENTPOINT ALIGN FOR FIG.LASERCURRENTTest discType 4Connect the DCvoltmeter toCN23(#1 and #2) inX29Press the "PLAY" keyto check that the dis-play is "03" or "05"– 220mV to 550mVNote:Type 4disc :SONY YEDS-18 Test Disc or equivalent. (KTD-02)LPF : Around 47kΩ + 390pF or so.CD player adjustmentInsert the AC cord to AC wall outlet while holding down the [CD PLAY/PAUSE] key.No< 1 >< 2 >< 3 >< 1 >ITEMDemagneti-zation andcleaningAzimuth oftheREC/PLAYheadTAPE SPEED(NORMAL)BIASCURRENTINPUTSETTING–SCC-1727TCC−153MTT−11410kHz,− 10dBTCC−110MTT−111SCC−17273kHz(B)Connect theAG to jack.1kHz:-30dBs10kHz:-30dBsOUTPUTSETTING–(A)(A)(A)DECKSETTINGDemagneti-zation:POWER OFFCleaning:PLAYPLAYPLAYREC andPLAYALIGNMENTPOINTRecordinghead, erasehead,capstanpinch rollerRVS FWDTrimming potin the motor.VR 1 (L)VR 2 (R)ALIGN FORDemagnetize the REC / PLAY headwith the head eraser. Clean the REC/ PLAY head, erase head,capstan andpinch roller using a cotton swabslightly damped with alcohol.Adjust the output to maximum andadjust the azimuth adjustment screwfor the Lissajours waveform pattern ofthe oscilloscope to become close to a45° straight line.Fig.1Check the tape speed so that3kHz(±2%) is obtained at the centerof the tape.Record 1kHz and 10kHz alternately,and adjust the bias current adjust-ment potentiometer for the playbacklevels (-21dBs)to become the same.FIG.ø. CASSETTE MECHANISM UNIT¿. PC BOARD ADJUSTMENTCassette Deck adjustmentDIGITALOUTOPTICALAUXINPUTLRFRONTSPEAKERS(6-16 Ω)L- +R(TAPE Lch),3 pinX28 CN1(TAPE Rch),5 pin{(A)(B)Fig.1AC voltmeter AG Oscilloscope AC voltmeterFrequency counterSYSTEM CONNECTIONS0dBs=0.775V