JVC PC-XC350 Service Manual - Page 9

PC-XC350 Tape recorder section Items Confirmation of head angle Confirmation of tape speed Measurement conditions Measurement method Test tape : TCC-182A(8KHz) Measurement output terminal : Speaker terminal Speaker R/L (Load resistance: 3 : Headphone terminal 1 Playback the test tape TCC-182A (8KHz) 2 With the recording & playback mechanism, adjust the head azimuth screw so that the left and right output leavers become maximum, After adjustment, lock the head azimuth at least by half turn. Test tape : TCC-112 (3KHz) Measurement output terminal : Headphone terminal Adjust VR401 so that the frequency counter reading becomes 3,010Hz +/-15Hz when playing back the test tape TCC-112 (3KHz) with playback and recording mechanism after ending forward winding of the tape. Standard Values Adjusting position Maximum output Adjust the head azimuth screw only Tape speed of deck :3,010Hz +/-15Hz VR401 Referemce Values for Confirmation Items Items Wow & flutter Measurement conditions Test tape :TCC-112(3KHz) Measurement output terminal :Headphone terminal Measurement method When the test tape TCC-112 (3KHz) has been played back with the recording and playback mechanism at the beginning of forward winding, the frequency counter reading of wow & flutter should be 0.25% or less (WRMS). Standard Values 0.25% or less (WRMS) Adjusting position 1 - 9