Kenwood CD-206 Service Manual

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Kenwood CD-206 Service Manual Manual pdf 6 page image

6ADJUSTMENTCD-206/DPF-R6010/R6010EFIG.GND+_L.P.F. ++L.P.F.VTVMVTVM12345671.2 kHz50 mVrms(a)No. ITEM INPUTSETTINGS OUTPUTSETTINGS ALIGNMENTPOINTS ALIGNFORPLAYERSETTINGS1 LASER POWER −Apply the sensor sectionof optical power meteron the pickup lens.−On the power from0.08 to 0.15 mW,when the diffractiongrating is correctlyaligned with the RFlevel of 1.0 Vp-p ormore.While pressing theRANDOM key, turnthe AC ON. (Testmode) Press thePLAY/PAUSE key,then confirm that thedisplay is "03".(a) Laser powerPickup3 FOCUS ERRORBALANCETest discType 4Connect an oscilloscopeas follows.CH1 : RF (CN2 pin 1)CH2 : FE (CN2 pin 2)FE BALANCEVR1Optimum eye pat-ternPress thePLAY/PAUSE key,then confirm that thedisplay is "05".Note:Type 4 disc : SONY YEDS-18 Test Disc or equivalent.LPF: Around 47 kΩ+ 390 pF or so.0.08~0.15 mWOptical power meter2 TRACKING ERRORBALANCETest discType 4Connect an oscilloscopeas follows.CH1 : RF (CN2 pin 1)CH2 : TE (CN2 pin 6)TE BALANCEVR2Symmetry betweenupper and lower pat-ternsPress thePLAY/PAUSE key,then confirm that thedisplay is "03".CN2(e) Tracking gain(e)4 TRACKING GAINTest discType 4Apply signal of1.2 kHz,50mVrms toCN2 pin 5-6.Connect a LPF to CN2pin 5-6 to which youconnect an oscilloscopeor AC voltmeters.TRACKINGGAINVR3Two VTVMs shouldread the samevalue.Press thePLAY/PAUSE key,then confirm that thedisplay is "05".Step 1~4 are in TEST MODE