Dual 1215S Service Manual Download | Manualshive

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Summary of Contents for 1215S

Page 1: ...0 180 cm Cartridge holder removable suitable for acceptance of cartridges having 1 2 mounting and possessing a weight of 1 9 grams Weight aprox 9 7 lbs with platter 3 2 lbs Dimensions and mounting cutouts see installation instructions Dual 1215S Service Manual alternating 50 or 60 cycle changeable by changing motor pulley 110 117 and 220 240 V svvitchable 4 pole asynchronous pole motor with radial...

Page 2: ...plug in head plug in head with cartridge 7 7 channel 1 red red green mu metal housing of cartridge inner side of groove left channel Q2 tonearm circuit 1 channel 2 white J 2 1 1 white blue a with miniature 5 pin plug channel 1 red lead channel 2 white lead b with phono plug bleck white c with banana plugs channel 1 red channel 2 yellovv common black ground green plug in head spring contacts betwee...

Page 3: ...cord drop Shut off and uhan Shut off 7 white r i r I I channel 1 channel 2 red white tonearm circuit _ meaid in r I red green Replacement cartridge Lubrication ot roove uhLnintei white blue LI I I 4 a with miniature 5 pin plug channel 1 red lead channel 2 white lead b with phono plug bleck white e with banana plugs channel 1 red channel 2 yellow common bleck ground green plug in head spring contac...

Page 4: ...changed lt must be set at the co i rect height see Fig 5 Fig 3 Motor field connections less voltage selector 6 110 125 V 168 120 9 The turntable platter is driven by the idler vvheel 108 vvhich is automatically disengaged from the motor pulley when the unit is shut off in order to protect its driving surface Turntable speeds of 33 1 3 45 and 78 rpm are selected by raising or lovvering the idler vv...

Page 5: ...pulley is not correct for local line frequency b Slippage between idler wheel 108 and motor pulley 120 or platter c Excessive friction in motor drive wheel or platter bearings Worn idler wheel Idler wheel does not contact motor pulley correctly Remedy Remove turntable platter with the help of a screwdriver inserted through the hole in the chassis placed there for the purpose Loosen screw on tonear...

Page 6: ...he following proce dure is recommended 1 Secure the unit in the repair jig set the stylus force to zero and lock the tonearm in place 2 Turn the unit upside down and unsolder the tonearm leads 3 Remove main lever 204 and linking lever 192 4 Connect the springs and screw on the shield 5 Unfasten the c washer and remove skating lever 6 After loosening the c washer 254 and friction washer 253 separat...

Page 7: ... L 096 This work is best done by an authorized Dual service agency Symptom Fig 9 Anti skating a Anti skatind in 0 b Anti skating mechanisrn in on the scale for conical styli Tonearrn on rest position c See ra tonearm only over turntable Cause Remecty Cam wheel Shietd ensron sPring ihieW e Ab Shut off Radius for conrcal styli Radius Anti skating f Skating force Anti skating rnechanism elligatrcal S...

Page 8: ...10 or 12 discs is done with the indexing lever 24 Setdown points are determined by the eccentric portion of the arm position ing slide 243 and the indexing lever 242 Horizontal movement of the tonearm is Iimited by the 192 arm segment striking the arm positioning slide 243 During the change cycle the main lever 204 raises the 234 arm positioning slide bringing it within reach of the spring stud On...

Page 9: ...y 120 At the same time the power switch 141 is actu ated by the switch slide 138 through the switch arm and the turntable begins to rotate b The switch lever 181 is brought within reach of the cam follower lever 236 so that it is pushed into the change position after the rotation of the main cam a Adjust set dwon with a 12 record so that stylus touches record aproximately 1 16 inside edge of recor...

Page 10: ...automatically re adjust the shut off lever which may have shifted out of position 147 146 242 Manual start When the tonearm 16 is swung inward by hand the pawl on the switch arm drops into a support on the base plate holding the switch arm in this position and the idler wheel 108 in contact with the platter The slide 138 linked with the switch arm actuates the power switch and sets the turntable p...

Page 11: ...ecords 12 diameter Fig 15 Record drop Shut off and change cycle The dog M on the turntable platter gear PR and the shut off lever 222 actuate both the change cycle at the end of the record as well as ihe shut off after the last record in a stack is played At the end of a record the tonearm moves towards the center at an accelerated rate due to the increased pitch of the grooves This motion carries...

Page 12: ...remains in its stop position and allows the tonearm to swing to its rest position When the main cam 197 returns to its neutral position the switch arm 143 drops into a cut out in the main cam opening the power switch 141 and disengaging the drive idler 108 Symptom Turntable stops after automatic setdown of the tonearm Cause a Switch arm 143 is not latched by pawl 194 b Power switch opens Remedy a ...

Page 13: ...switched to stop Cause Cam rocker 171 not caught by start lever Remedy Adjust cam rocker so that at the conclusion of the stop function the start lever runs about 1 16 under the follower Symptom Records do not drop Cause Cam rocker 171 has too little force travel Remedy Re adjust eccentric so that when the three supports in the automatic spindle are held in and the mein cam is at its neutral press...

Page 14: ...oduce a twisting force a Adjust skating lever so that horizontal movement of tonearm causes no movement of anti skating spring b Allow some slack in tonearm leads Muting switch misadjusted Dis Bend contacts so that in the neutral Position of the main cam tance between contact springs and the spacing between contacts is about 0 02 inch Clean contacts shorting contact is too great No sound Spacing t...

Page 15: ...x nut BM 4 6 29 210 362 Hex nut BM 3 2 30 223 051 Bearing race complet 2 211 718 Steel balls 3 mm 0 10 31 200 579 Spring mounted footing 1 set 3 pieces 1 32 210 366 Hex nut BM 4 6 33 200 721 Threaded piece 3 34 200 728 Compression spring 3 35 200 723 Rubber insert isolation mount 3 36 200 722 Steel cup 3 37 210 624 Washer 4 2 7 0 0 3 St 4 38 201 632 Rubber washer 2 39 200 713 Washer 2 40 200 712 S...

Page 16: ...Fig 24 Exploded view parts above chassis 16 ...

Page 17: ...Fig 25 Exploded view parts below chassis 17 ...

Page 18: ...4 mm 0 1 135 210 475 Machine screw AM 3 x 5 12 136 218 986 Roller for switch slide 1 137 214 181 Screw holt 1 138 213 970 Switch slide complete 1 139 214 207 Cover for power switch less voltage selector 1 140 210 492 Machine screw AM 3 x 15 1 141 214 205 Power switch complete less voltage selector 1 142 200 447 Cable clamp 1 143 217 889 Switch arm complete 1 144 210 145 C washer 2 3 9 145 210 475 ...

Page 19: ...4 210 469 Machine screw AM 3 x 3 2 215 217 297 Bearing support complete 1 216 210 511 Machine screw AM 4 x 4 1 217 210 143 C washer 1 5 1 218 201 174 Compression spring 1 219 221 525 Conical spring 1 220 200 686 Spring pin 1 221 220 235 Stop nut 1 222 220 232 Shut off lauer complete 1 223 222 690 Friction plate complete 1 221 935 Bushing 1 224 210 145 C washer 2 3 9 225 200 650 Sleeve 1 226 200 52...

Page 20: ...1215 S 1 225 335 Mounting instructions 1 214 048 Mounting gauge for pick up System 1 Alteration reserved Not ilustraded Lubrication All bearings and sliding points have bean properly lubricated during aesembly Re lubrication is normally not necessary for about two years sincle all important bea rings are provided with oil retainers and sinteres bäarings Lubrication should be applied sparingly lt i...

Page 21: ...Fig 26 Chassis viewed from above Fig 27 Chassis viewed from belovv 21 ...

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