Panasonic SL-1200MK2 Service Manual - Page 5

FEATURES Total quartz locked continuous pitch adjustment f8% Quartz-phase-locked control means almost perfect accuracy of turntable rotation . But with most quartz turntables, this accurate control circuit must be cut out when the pitch control is employed . With the SL-1200MK2, however, pitch is variable continuously (analogically) by up to ±8% under total quartzlocked control . The pitch is controlled with a large sliding lever, located to the right of the turntable platter. Four lines of platter markings are also provided indicating +6%, +3 .3%, 0% (exact rated speed) and -3 .3% change from rated speed . Aluminum diecast cabinet and special heavy rubber base material provide acoustic isolation The effects of external vibrations are dramatically reduced in the turntable by this new turntable construction . The turntable base is precision-made aluminum diecast. And the underside of the main base is made of a heavy rubber material (special one-piece molding) which has excellent vibration resistance and absorbing characteristics . The turntable platter is also vibration-damped with specially fabricat rubber matting in the underside along with the thick turntable sheet (rubber mat) . Four large-size insulating feet also help to absorb unwanted vibrations . These features make SL-11 200MK2 ideal for use with extrahigh sound pressure levels . High torque for fast starts The integral rotor/platter motor delivers 1 .5kg-cm (1 .3lb-in) starting torque . This high torque gives very quick starts enabling the platter to reach 33-1/3 rpm within 0 .7 s. (a quarter of a turn) . This is a big advantage in many professional applications where fast cueing is a necessity. Stylus illuminator for low-light conditions You'll appreciate the stylus illuminator when you are using the turntable under low-light conditions . The illuminator can be hidden in the turntable base, should you need it, simply push a button and it will pop up gently and cast a beam of light across the disc in the area traversed by the tonearm . SL-1200MK2 You can then clearly see the spaces between the selections on the record, and cue the arm exactly where you want it . The illuminator can then be pushed back down into the base . High sensitivity, low mass, gimbal suspension tonearm The highly sensitive tonearm features a genuine gimbal suspension, the rotational center of which is precisely defined at one point. Bearings are finished to a tolerance of ±0 .5 microns. This and the extra-closeness of pivot center to the bearings, result in the minimal friction of 7 mg (0 .007 g) for both horizontal and vertical movement . Add to this the low 12-gram effective tonearm mass (including headshell, without cartridge) and you have a tonearm compatible with the wide range of compliances found in today's cartridges . If you choose a popular high compliance MM cartridge, the low range resonance frequency will appear in the correct area to avoid warp frequencies of records, but without entering the low end of the audio spectrum . This tonearm is provided with a computer designed, light-weight, high-rigidity headshell made of single-piece diecast aluminum to resist partial vibration. The universal design allows headshell interchangeability . Contacts are gold-plated . Helicoid tonearm height adjustment Arm height is adjustable within a range of 6 mm to accommodate varying cartridge dimensions . Adjustments are done with a precision-made helicoid . Other fine features " Quick stops are achieved with a fully electronic braking system . " A strobe illuminator is provided . The stroboscope is con- trolled by the extremely stable quartz oscillator, rather than potentially unstable AC line frequency. Power on/off control built-into strobe illuminator for ease-of-operation . Soft-touch start-stop switch allowing precision control capability without the annoyance of accidental operation. " Technics integral rotor/platter motor construction with full cycle detection FG .