SL-12 OM K2 (M),(MC)
Contents
1. mad qe o IC101 AN6675 m i Three phase R210 full wave PNP Oscillator 17 AMP gain ENS H J S 8 Bt M e 5 ay P sianal Three phase a full wave S NPN 1s 7 e qc 1 T 5 m o ls c Po DET E m E 9 D201 33 r p m indicator R304 D202 45 r p m indicator D201 33 r p m switch D202 45 r p m switch iis S203 Start Stop switch H5 Q1 2 3 Reference AC line ER 50 60Hz Rectifier IC201 AN6680 Speed control Phase control 1C301 AN6682 io TEH ER l Y l e dm enm em ame ae D COND D Gee MD D aD aw D x ie 1 N XE er pol fr VCO 33 45 Brake gt A OSC Power circuit S S release x 3 3l BR oT OE C303 C304 d UN R302 R303 C305 3 34 S301 PITCH LOCK SWITCH SA ould 6 5 MALA gt N E e O B EXPLODED VIEWS DRIVE CIRCUIT OPERATING P C B N x 2 O O N 4 TONE ARM and ARM BASE ASS Y r a ey a REPLACEMENT PARTS LIST Mechanical Notes 1 Part numbers are indicated on most mechanical parts Please use this part number for parts orders 2 A indicates that only parts specified by manufacturer be used for safety 3 SL 12002. IC201 AN6680 E Q202 2SD637 mm IC302 SVITC4011BP Q203 2SC1328 POWER SWITCH 5601 SL 1200MK2 Si i2 B ADJUSTMENT Electrical Adjustments Electrical Notes 9 Make the following adjustments after replacing parts such as IC s transistors diodes etc Condition of the set 1 Power switch ON 2 Pitch control Center position 3 Speed selector switch 33 1 3 r p m Instruments to be used 1 Tester 2 Frequency counter Sd i pus Frequency counter 1 Pitch control switch to center position A TP27 2 Adjust VR301 for 262 08 kHz 0 05 kHz of contro 0 GROUND f PITCH requency B C Adjustment Tester T it uc NE Adjust VR302 for 2 7 kt 0 1 of resistance control gain TP32 value Braking Adjust VR201 for complete stop within 120 270 adjustment VR201 after stop signal initiated Turntable becomes free a BRAKE few seconds after stop STOP SIGNAL 270 Turntable 120 m REFERENCE VOLTAGE AND WAVEFORM AT EACH IC PIN IC101 AN6675 T 9 o o o e 5L 1200MK2 IC201 AN6680 Same as at right Same as at right Same as at right Same as at right TER Same as at right H ME E Same as at right PE 0T m BLOCK DIAGRAM Position detection coil R107
3. form at 1C201 YES Drive circuity check NO Check voltage and wave IC101 form at 1C101 YES Check voltage on Q201 NO e Base voltage 10V Reference voltage circuity check NO Q1 Q3 CH Runaway operation j rm e TP5 20V N YES Control circuity check NO e Check voltage and wave 1C201 form at IC201 YES i Drive circuity check NO Check voltage and wave 1C101 form at 1C101 YES FG circuity check NO Check voltage on Q203 Control circuity check e Check voltage and wave form at 1C201 YES Turntable rotates abnormally X201 D IC201 Pitch control circuity check Check voltage and wave form at 1C301 1C302 IC301 IC302 E Speed changeover is Speed select circuity check IC201 defective eTP13 3 4V S 201 S 202 e TP14 OV D201 D202 Str be not Check voltage at TP28 and TP29 Q202 e TP29 9 6V BEN B lines Printed Circuit Board ME Earth Ground lines 1 2 3 4 5 6 A 0202 SPEED SELECTOR SWITCH B C START STOP SWITCH D E POWER TRANSFORMER F G AC 117V 50 60 Hz H RED V pm a Je DR YEL Su ORG VER REO M ll coe Oa EU 1 Penn EES EE gy PE miii M nus im iu Me a IE E mum CE IC101 AN6675 IC301 STYLUS ILLUMINATOR SWITCH BRN ORG Q201 25C1846 TL R401 1 5K 5401 i 3 BLK E
4. 22 Turntable platter Aluminum diecast Friction Less than 7 mg lateral vertical Diameter 33 2 cm 13 5 64 Tracking error angle Within 2 32 at the outer groove of Weight 2 kg 4 4 Ib 30 cm 12 record Turntable speeds 33 1 3 rpm and 45 rpm Within O 32 at the inner groove of Pitch control All quartz locked 8 range 30 cm 12 record Starting torque 1 5 kg cm 1 3 Ib in Stylus pressure Build up adjustment range 0 2 59 characteristics 0 7 s from standstill to 33 1 3 rpm Applicable cartridge 6 109 Braking system Electronic brake weight range 13 5 17 5 g including headshell Speed change due to with auxiliary 9 5 13g load torque 0 within 1 0 kg cm 0 87 Ib in weight 17 20 5 g including headshell Wow and flutter 0 01 WRMS with shell weight 3 5 6 5 g 0 025 WRMS JIS C5521 11 14 g including headshell 0 03596 peak IEC 98A Weighted Headshell weight 1 89 This rating refers to turntable assembly alone excluding effects of record cartr dge or tonarm but including platter Measured by obtaining signal from built in fre a E AMINO pm quency generator of motor assembly copying and distribution is a violation ef law Panasonic Company Panasonic Hawaii Inc Matsushita Electric of Canada Ltd Technics Division of Matsushita Electric 320 Waiakamilo Road Honolulu 9770 Ambler Drive Corporation of America Hawaii 96817 Mississauga Ontario One Panasonic Way Secaucus L4W 2T3 New
5. Adjustment of arm lift height See Figs 20 and 21 The arm lift height distance between the stylus tip and record surface when cueing lever is raised has been adjusted at the factory before shipping to approximately 8 13mm If the clearance becomes too narrow or too wide turn the adjustment screw clockwise or counterclockwise while pushing the arm lift down Clockwise rotation distance between the record and stylus tip is decreased Counterclockwise rotation distance between the record and stylus tip is increased Mote As the adjusting screw has hexagonal head be sure to make the adjustment while depressing the arm lift or the screw will not move freely Also be sure that the hexagonal head retracts correctly into the arm lift when the latter is released 11 appears stationary at the pitch of 658 2 appears stationary a1 th pitch of 33 3 appears stationary at the pitch of 0 4j appears stationary al the pitch of 3 3 Fig 19 Adjustment of the tonearm height See Fig 22 The height of the tonearm can be adjusted up to 6 mm and a scale is provided on the adjust ring in 0 5 mm increments Be sure to set the proper arm height using the adjust ring scale and referring to the table Height of cartridge mm Scale reading on the arm height H adjust ring 15 B 16 For example if the cartridge height is 17 5 mm the arm height adjust ring should be positioned at the intermediate location between 2
6. 2SD389 ASD wae PS LL ad BLINE Q203 25C1328 R219 33K Q2 3 25D637 um C201 16V33 R203 47 R205 120K cn2 50y47 R104 47K 213 WP i 103 2533 m TPI 250184 iB amp m TP29 I LI m p lo em 1250637 Q0 D201 202 SVDSR105C D204 D205 STYLUS ILLUMINATOR STROBE ILLUMINATOR NOTO 1 S201 Speed selector switch 33 1 3 r p m in B S601 Power switch in ON position ON position push condition 7 The drive circuit IC voltage and wave form are not 2 202 Speed selector switch 45 r p m in OFF indicated in side the schematic diagram position not push condition 8 Indicated voltage values are the standard values for 3 S203 Start Stop switch in OFF position not the unit measured by DC electronic circuit tester push condition high impedance with the chassis taken as 4 301 Pitch lock switch in ON position center standard Therefore there may exist some errors in position the voltage values depending on the internal im 5 401 Stylus illuminator switch in OFF position pedance of the DC circuit tester B REPLACEMENT PARTS LIST Electrical Part numbers are indicated on most mechanical parts Please use this part number for parts orders 2 A indicates that only parts specified by manufacturer be used for safety 3 SL 1200MK2 M MI SL 1200MK2 MC gt MC Notes 1 INTEG
7. Jersey 07094 SL 1200MK2 m CONTENTS DISASSEMBLY PROCEDURE KC PC 2 3 PRINTED CIRCUIT BOARD RL RAT SRH UY 11 12 PARTS IDENTIFICATIONS lisse rn m 3 ADJUSTMENT Electrical ge mci ot muto etae 13 ARM BASE ASSEMBLING PROCEDURE ee ass sss 4 REFERENCE VOLTAGE AND WAVEFORM AT EACH IC FEATURES SEI m hee eS ae Gee AE E ERR 5 PING vu ans aie uU Iu UE RR RUD RA E Rt 13 14 ADJUSTMENTS hnc ee B BLOCK DIAGRAM eese ces e n Rm mmm mm 15 16 SCHEMATIC DIAGRAM scu a ne uoa 7 8 EXPLODED VIEWS aa an a a 17 18 REPLACEMENT PARTS LIST Electrical 9 REPLACEMENT PARTS LIST Mechanical 19 1 EXPLODED VIEWS oe cae ies he OR DC Re mte oma i 20 B DISASSEMBLY PROCEDURE How to remove panel cover 1 Remove head shell and turntable 2 Secure arm with arm clamp F 3 Remove 5 screws of the panel cover as shown in Fig 1 How to remove stater frame coil and F G detector coil 4 Remove 3 connectors and 2 read wires 8 from power transformer as shown in Fig 2 5 Remove 3 screws of the drive circuit board and 3 screws of the stater frame cover as shown in Fig 2 6 Disconnect 18 soldered parts of the stater coil and 4 soldered parts of the F G detector coil as show in Fig 3 A 7 Remove 3 screws of the stater frame ass y as shown E in Fig 3 How to remove bottom base ass y 8 Remove 4 audio insulators Counterclockwise rotatio
8. SFPEW9601 Washer Cartridge SFAT122 01A Hinge Ass y SFCZV8801 Screw Cartridge SFPEV980 1 Screw Cartridge SFKO135 01 Overhang Gauge SFPZB3501 Shell Weight Head Shell Tone Arm Ass y Balance Weight Ass y Lift Ass y Knob Arm Base Lock Spring Lift Ass y Knob Arm Lift Oil Damper Plate Arm Base Cover Spacer Phono Cord Clamper Phono Cord Tone Arm Fixing Plate Ass y Plate Position Fix SFPCC31001K SFPAM18201K SFPWG17201K SFPRT18201K SFP2B17202 SFQA829 03 SFPAB13202 SFPJL 18202K SFPZB12203 SFUM170 06 SFPZB12204 SFPAB18201K SFPZB12201K SFHP122MO1 Carton SFHP122CO01 Carton SFHH122 01 Pad Front SFHH122 02 Pad Rear SFHD 122 01 Pad Top SFHD122 02 Pad A Turntable SFHD122 03 Pad B Turntable SFYH60X60 Polyethylene Cover Turntable Unit and Dust Cover SF YH40X45 Polyehtylene Cover Turntable N 2 Q e Al MAG VE m EXPLODED VIEWS Printed in Japan
9. and 3 on the scale See Fig 22 Caution Be sure to lock the tonearm by turning the arm lock knob in the direction indicated by the arrow after finishing the height adjustment for the tonearm Lubrication See Fig 23 Apply 2 or 3 drops of oil once after every 2000 hours of operation The time interval is much longer than that for conventional type motors 200 500 hours Please purchase original oil Part number is SFWO 010 8 13 mm 5 16 33 64 Sch ematic Diag ra nm This schematic diagram may be modified at any time with the development of 1 2 3 4 5 6 7 Di SVDS1RBA20 i POWER SWITCH B AC 117V 50 60Hz 24 301 De SVDRD5 1EBST SVDRD5 1E R306 22K C T wm g C205 6V220 Braking D adjustment m C206 50I VR201 50KB il ELI R215 47K gil 0 9 0 EI R21a 22K 5 ER d 10201 AN6680 E Adjustment of F pitch control 0925 Pitch C303 50V1 C305 00012 IE ee mm ao is CO gk TPIS 3 e Sa a Pitch Adjustment 4 8 12SD6 ay a NEC E eR T i i c D204 5 6 Ow 520 D701 D201 202 G Veo 7o Med 208 44 SVDSR105C E TS MA150 B 6 gei S301 Tman ys fO 520 2 VR303 45 PITCH LOCK SWITCH SPEED SELECTOR SWITCH PITCH CONTROL VOLUME STRC development of new technology 7 8 9 10 11 12 Q1 268
10. 1 5600 10k 470 23k0 120k 18k 56kf1 150kQ 18KN 10KN 1200 1 2KQ 22k 4 7kf1 150KN 22k 3 3KN 2200 4700 3 3 47061 8 2k 1 15k 22KN 4 70 470gF 1 4W 1W IW 1 4W 1 4W 1 4W 1 4W 1 4W 1 4w 1 AW 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4w 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W CAPACITORS HHH RRR HH OH ey o E HH HE HOH OH OH Cc E ECEA1VS330 Electrolytic 33pgF 35V ECEA1ES220 Electrolytic 22gF 25V SWITCH ES ECEA1VS330 Electrolytic 33yF 35V EVQP5ROAK Switch Speed Selector 33 1 3 r p m gt ECEA1VS330 Electrolytic 33yuF 35V EVQP5R04K Switch Speed Selector 45 r p m ECQM1H104KZ Polyester 0 1 F 50V 10 SFDSSS5GL13C Switch Start Stop ECQM1H104KZ Polyester 0 1gF 50V 10 SFDSD2MSL 4 Switch Stylus illuminator ECEA1ES101 Electrolytic 1004F 25V SFDSSS5GL 2 Switch Power ECQM1H104KZ Polyester O 1uF 50V 10 ECQM1H562KZ Polyester 10 ECEA50Z1 ECCD1H101K F LI dade ee Fuse 350mA ECEA1ES101 ECEA50Z3R3 ECCD1H471K ECEA1ES101 ECEA50Z1 ERD25FJ562 Carbon ERX1ANJ1R5 LAMP ECEA1JS4R7 SFDN122 01 Lamp Stylus illuminator ECEA1CS330 ECEA50Z1 ECQM1H473KZ TRANSFORMER ECEA1AS221 ECCD1H390K ECQM1H224KZ ECQM1H473KZ ERD25FJ682 C
11. MK2 M gt M SL 1200MK2 MC MC SFOH360M01 Phono Cord SFAD122 01A Dust Cover ON SFTG172 01 Turntable Mat 2 ee d SFTE172 01Z Turntable SFPKD17203 pon di S ene xd Turteble i SFPKB17201S Ring Arm Base Operation er SML EAN SFPKD12201 Bracket Arm Base SFMG520 31A Stater Frame am SFMZ172 01E FG Detector Coit Ass y 81 SFPAB17206 Knob Anti skate Force Control SFUP122 12 Plate Shield SCREWS WASHERS and CIRCLIPS SFAC122 01 Cabinet l ns Screw SFX Screw SFUM172 04 Ornament Stylus illuminator XTN3 8B Screw SFKT 122 01 Knob Power Switch XTN26 6B Screw SFKK122 01E Case Strobe illuminator XTN4 10B Screw Knob Start Stop Switch XWA4B Washer prin Start Stop Knob an oe Base Operation irclip Knob Speed Selector 33 1 3 r p m XUC25FT Circlip Connector 7 PIN SFXW910J02 Washer SFGZ122 01 SFYB5 32 Spacer Rubber Speed Selector Ball Switch Cam XTN3 40BFZ SH XSN3 10BVS Screw XWE3F12FZ Washer XTN3 25BFZ Screw SFXW122 01 Washer XWE3E10 Washer SFPEW1100 Washer SFPEW11003 Washer XSN3 8S Screw SFXG132 01 Screw XTV348BFN Screw XTN3 10B Screw XTN2 10B Screw SFQA520 01 SFUM122 03 Spring Switch Cam Cam Switch _ SFUM015 11 Spacer LED SFKK172 01 Cover Lamp SFXB122 02 Boss Drive SFQA172 01 Spring Drive Boss SFXJ172 01 Pin Lock Canceler SFUP122 02E Bracket
12. ORDER NO 5D7908 1601 ervice Manual oL 1200MK2 M MC N Y e O This service literature is designed for experienced repair technicians is not designed for use by the general public It does not ons to advise non technical individuals of potential dangers in attempting to service a product Products power by electricity should be serviced or repaired only by experienced professional technicians A attempt to service or rerair the product or products dealt with in this service literature y anyone else could u rest in serious injury or death s The model SL 1200MK2 M is available in U S A only The model SL 1200MK2 MC is available in Canada only only and contain warnings or cau SPECIFICATIONS Specifications subject to change without notice Weight and dimensions shown are approximate General Rumble 56 dB IEC 98A Unweighted Power supply 120 V AC 50 or 60 Hz 78 dB IEC 98A Weighted Power consumption 17 W Dimensions 45 3 x 16 2 x 36 cm Tonearm section WxHxD 17 27 32 x6 19 64 x 14 11 64 Type Universal Weight 11 kg 24 3 Ib Effective length 230mm 9 1 16 Arm height adjustment 31 8 37 8 mm helicoid part 6 mm Turntable section range 1 21 32 3 35 64 Type Quartz direct drive helicoid part 15 64 Manual turntable Overhang 15 mm 19 32 Drive method Direct drive Effective mass 12 g without cartridge Motor Brushless DC motor Offset angle
13. RATED CIRCUITS Integrated Circuit Integrated Circuit Integrated Circuit ERD25FJ103 ERX1ANJ4R7 ERG1ANJ561 ERD25FJ103 ERD25FJ470 ERD25FJ272 ERD25TJ124 ERD25TJ183 ERD25TJ563 ERD25TJ224 SVITC4011BP _ ares 2SD389A Q Transistor 2SD637 2SC1846 R 2SC1328 T Transistor DIODES Transistor Transistor SVDS1RBA40 _ Rectifier MA1051 Diode Zener 5 1V MA162A Diode SVDSR 105C SVDEBR5505S SVDGL 9PG2 CRYSTAL en SVQU306115 Crystal 4 19328MHz Oscillator Light Emitting Diode VARIABLE RESISTORS EVLS6AAO00B54 Braking Adjustment BRAKE 50k B EVMH2GA00853 Adjustment of Pitch Control X096 PITCH 5KN 8 Pitch Adjusthent Gain 5Ok Pitch Control Volume integrated Circuit ERD25TJ154 ERD25TJ183 ERD25FJ103 ERD25FJ121 ERD25FJ122 ERD25TJ223 ERD25FJ472 ERD25TJ154 ERD25TJ223 ERD25FJ102 Light Emitting Diode Light Emitting Diode ERD25FJ332 ERD25FJ221 ERD25FJ471 ERD25FJ471 ERD25FJ822 ERD25FJ152 ERD25TJ223 ERD25FJ4R7 EVLS6AAOOB54 EVBJO5C19ABE ECEB1HS471 Carbon ERO25CKF 3301 5L 1200MK2 Carbon Metal Film Carbon Carbon Carbon Carbon Carbon Carbon Carbon Carbon Carbon Carbon 4 Carbon Carbon Carbon Carbon Carbon Metal Film Carbon Carbon Carbon Carbon Carbon Electrolytic Metal Oxide Carbon 10kf 4 70
14. Stylus illuminator SFUP122 03 Piate Lock OPeration SFDJ122 03E Connector 3 PIN Pin Guide Spring Lock Canceler Pin Spring Lock Operating Plate M tg Pin Lock Operating Plate M tg Clamper AC Cord Bracket AC Cord AC Cord Bracket Power Transformer Cushion Power Transformer Spacer Power Transformer SFX0172 01 XSN17 3FY Screw XSN3 14S Screw SFXW172 04 Washer XUB14FT Circlip SFUZ172 05 O Ring XTN3 6B Screw XSN3 6S Screw XWA3BFZ Washer XWA3B Washer XWG3 Washer SFXG829 1 Screw XUC5FT Circlip XTW3 6B Screw XTV3 6BFN Screw XWE4A10EW _ Washer XTN3 25B Screw SFUPO25 01 RJA9YA SFUP132 03 SFGC122 01 SFUP122 10 SF KT 122 02 SFKK122 03 SFUZ122 01 Knob Pitch Control Volume Ornament Pitch Controt Volume Shading Cloth Pitch Control Volume Holder LED Bracket Pitch Control Votume Connector 4 PIN Supporter Bottom Base Base Bottom Supporter A Hinge Supporter B Hinge ISFUP122 01 SFDJ122 01E XYN3 C6FZS Screw XSN3 12BVS Screw SFPEW17201 Washer XWG26 Washer Case Hinge Audio Insulator Supporter C Hinge Knob Speed Selector 45 r p m Name Plate SFKTO15 02E SFNN122MO1 SFNU122M01 Instruction Book SFNU122C01 Instruction Book SFNN122C01 Name Plate SFWE010 Adaptor 45 r p m SFXO122 01 Pipe A SFPEN3302 Nut Cartridge SFXO122 02 Pipe B l
15. arbon 6 8k n 1 4W ERD25FJ272 Carbon 2 7kQ 1 4W 5 ECEA1ES470 ERD25FJ561 Carbon 5600 1 4W 5 ECQK1123FZ ERD25FJ471 _ Carbon 4700 1 4W 5 ECEA50Z1 ERD25FJ103 Carbon 10k 1 1 4W 5 ECEA1HS100 ERX1ANJ4R7 Metal Film 4 70 TW i 5 ECQM1H122KZ ERD25FJ472 Carbon 4 7k 1 AW 5 ECEA50Z1 ERD25TJ473 Carbon 47kQ 1 4W 5 ECQF1A473MD ERD26FJ103 Carbon 10k 1 AW 5 ECQU1A473ME ERD25FJ150 Carbon Metal Film Electrolytic Electrolytic Electrolytic Polyester Electrolytic Electrolytic Ceramic Ceramic Electrolytic Polyester Polyester Electrolytic Ceramic Electrolytic Electrolytic Electrolytic Electrolytic Polyester Polyester Polyester Electrolytic Electroiytic Polyester 4 7 pF 33 YF lgF 0 047 uF 220 F 1gF 100pF 39pF 100uF 0 22 uF 0 047 pF 3 3pF 470pF 100gF tur 0 0056uF 50V 47HF 25V QO12uF 125V MF 50V 10HF 50V 0 0012uF 50V lgF 50V 0 047uF 400V 0 047uF 400V 20 10 10 10 10 10 10 t 1 t10 20 iL 1200MK2 B TROUBLE SHOOTING Power switch doesn t Power circuity check NO F1 S601 T1 operate e TP5 20V D1 Q1 Q3 i Reference voltage circuity check NO Q1 Q3 Start Stop switch YES A push E Control circuity check NO IC201 e Check voltage and wave X201
16. b to 0 5 and make sure that the can celler spring is in contact with the arm shaft See Fig 16 If the canceller spring is deflected adjust it as follows 1 Clamp the arm on the rest 2 Set the canceller knob to 0 5 3 Remove the PU base plate adjust gear so that the canceller spring is in the position of Fig 16 4 Mount the PU base plate onto the arm base and crrcck the spring position I gt Gear can celler spring m FEATURES Total quartz locked continuous pitch adjustment 8 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 con tinuously analogically by up to 8 under total quartz locked 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 3 096 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 moldi
17. button Stylus illuminator switch aT utn ee eS ee ee oa e UP dom pu a m n ona o Wa L3 aca eee RS e ed UE IEEE LAM x m m xh s eo RH M Stylus illuminator Fig 10 3 Speed select buttons Pitch control knob B ARM 1 Att con 2 Cor Op 3 Hol base cloc Not Tak pos 4 Adj base secu See 4 m ARM BASE ASSEMBLING PROCEDURE 1 Attach the control ring to the arm base seat The control ring should be roated counterclockwise 2 Completely tighten the control ring and then loosen it 1 5 2 5 turns to set the scale to 3 See Fig 11 Arm base 3 Hold the arm base and set the red line mark on the arm base to the scale near 2 then turn the arm base clockwise See Fig 12 Note Take care not to allow deflection of the predetermined positions of the control ring and arm base seat 4 Adjust the arm base so that the red line mark on the arm base is set to the scale 3 of the control ring Next secure the positioning base plate with two setscrews See Fig 13 B ADJUSTMENT OF CANCELLER 5 Rotate the control ring and make sure that the arm base shifts within the range of O 6mm See Figs 14 and 15 If it does not shift within the specified range the arm base position is deflected In that case disassemble the parts and check as specified in step 3 SPRING POSITION If the arm body or PU base plate is replaced be sure to set the canceller kno
18. he 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 com patible 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 head shell interchangeability Contacts are gold plated Helicoid tonearm height adjustment Arm height is adjustable within a range of 6 mm to accom modate 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 swi
19. n 9 Remove 17 screws and spacer as show in Fig 4 10 Remove 11 screws as shown in Fig 4 How to remove stylus illuminator lamp 11 Remove 2 screws of the stylus illuminator lamp ass y as shown in Fig 5 12 Remove 1 screw B as shown in Fig 6 How to remove neon illuminator L E D 13 Remove 4 screws f as shown in Fig 5 14 Remove 1 circlip and switch cam as shown in Fig 5 15 Remove strobo illuminator case How to remove tone arm 16 Remove 4 screws of the arm base cover as shown in Fig 5 17 Remove 2 screws of the phono cord clamper as shown in Fig 5 18 Remove phono cord clamper as shown in Fig 7 19 Remove 2 screws of the phono cord p c b as shown in Fig 8 20 Remove 2 screws as shown in Fig 8 21 Remove 2 screws of the silicon oil dumper as shown in Fig 8 22 Remove 3 screws 8B as shown in Fig 8 23 Remove 2 screws of the tone arm as shown in Fig 9 2 ory Ji B PARTS IDENTIFICATION Arm height adjustment ring Hinge 45 rpm adaptor Er aiii a RN a Balance weight Stylus pressure ring mp ES Arm lock knob Turntable base Anti skating control knob Turntable mat m Cueing lever Arm clamp y Arm rest Center spindle d Tonearm Turntable platter P Pitch indicator Strobe dots _ Power switch i Locking nut Headshell Strobe illuminator pilot lamp Start stop
20. ng which has excellent vibration resistance and absorbing characteristics The turntable platter is also vibration damped with special ly 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 1200MK2 ideal for use with extra high 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 profes sional 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 Cross section of SL 1200MK2 Aluminum Deadening diecast base rubber Heavy rubber 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 t
21. tch allowing precision control capability without the annoyance of accidental operation Technics integral rotor platter motor construction with full cycle detection FG 1 1 4288891 X e De 6 lections want it nto the ension gimbal recisely ance of center f 7 mg nt Add icluding m com today s ice MM pear in rds but m This weight iminum ys head accom re done braking is con rather itor for control eration jn with B ADJUSTMENTS Pitch control fine adjustment of speed See Figs 18 and 19 When the pitch control knob is located at the center of the position after turning on the power the green LED indicator is lit showing the operating condition for the predetermined speed either 33 1 3 or 45rpm The pitch control is variable in a range of 0 8 Adjustment should be done on the basis of indicator scale Figures on the indicator show approximate percentages for variable pitch control When the strobe dots in 4 stages marked at the peripheral edge of the turntable appear to be stationary variation of individual pitches is shown See Fig 19 Mote The strobe illumination of this unit employs a strobe illu minator LED synchronized with the precise quartz fre quency For fine adjustment of the turntable speed be sure to effect the adjustment according to the LED illumination The LED illumination is not synchronized with fluorescent lamps
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