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Summary of Contents for 604

Page 1: ...Dual Edition February 1978 601 1 Service Manual Dual Gebrüder Steidinger 7742 St Georgen Schwarzwald D o w n l o a d f r o m w w w d u a l d e N o t f o r c o m m e r i c a l u s e ...

Page 2: ...al wow and flutter Rumble laccording to DIN 45 5001 Tonearm Effective length of tonearm Offset angle Tangential tracking error Tonearm bearing friction Stylus pressure Weight AC 50 to 60 Hz 110 to 125V 220 to 240V electronically regulated direct drive system Dual EDS 500 approximately 2 watts Motor at playing Operation 50 mW 220 V 50 Hz at start 25 mA 110 V 60 Hz at play 15 mA at start 65 mA at pl...

Page 3: ... k C 5 10 n C6 in G3 C 7 n G4 R8 A9 10 k 22k R7 47 k R 10 24 k T2 BC 172 B C8 0 22 p Transistoren von der Anschlußseite gesehen Transistors as seen from the connecting side Transistors vus du cöte des connexions e BC 172 BC 238 C IC von der Bestückungsseite gesehen as seen from the top side vu du cöte el6ments 555 EBC 4069 BD 415 1 4 2 3 1 2 3 ...

Page 4: ...148 V R 15 C 10 0 47 p 10 k R 14 220 k C 13 47 p 12 0 68 p 8 1 7 T3 BC 238 C MIM 1 3 R 12 270 k 10 130 V 20 240 V 10 n 12 C 11 10 p R 18 2 R 17 47 k Si 63 mAT C 52 47 n 220 V C 51 68 n A D 51 By 183 R 51 22 k 19 13 16 14 15 52 51 17 1 705 3 18 10 13 T4 BD 415 20 5 V C 55 1000 p T54 0 n 14 9 52 11 51 4 12 53 54 ...

Page 5: ...draht Mass lead Mass cable Mass cable _ 1 1 linker Kanal left channel 1 canal gauche canal izquierdo I weiß white blanc blanco 1 Masse linker Kanal 1 Mass left channel 1 Masse canal gauche 1 masa canal izquierdo j blau blue bleu azul z 1 i i 1 1 1 1 Masse rechter Kanal 1 Mass right channel 1 Masse canal droit masa canal derecho I IIIII 1 Masse schwarz Mass black Masse noir Masa negro 7 Masseblech ...

Page 6: ...system from motor 18 care fully 5 Fix replacement motor electronics Solder connecting cables see connection diagram Fig 4 6 Slide cover over power part and fix it by means of machine screws 112 7 With the unit in normal position connect it to power line Switch on unit and check power consumption on Opera tion 220 V 50 Hz approx 15 mA 110 V 60 Hz approx 25 mA Check nominal speeds If necessary readj...

Page 7: ...the lines of the stroboscope appear to stand still If the lines move in the direction of rotation of the platter the platter speed is too high If the lines move backwards the platter is rotating more slowly than the nominal speed Adjustment of platter speeds 33 1 3 and 45 rpm is carried out separately with the pitch controls 7 Strobe markings are provided on the outer edge of the platter for 50 an...

Page 8: ... 43 185 34 57 49 219 205 206 203 22 11 207 Removing the tonearm froM the bearing frame We recommend the following procedure 1 Clamp unit in the repair stand Set spring housing scale 60 to zero Lock tonearm 48 Remove weight 49 2 Turn unit over and remove the screening sheet 140 Un solder the tonearm connections on the muting switch 137 3 Remove safety washer 187 washer 186 and bearing 185 Move posi...

Page 9: ...the eccentric pulley E which is accessible through the hole in the installation plate 231 between the knurled ring 68 and the tonearm Then set knurled ring 66 to 0 5 The tonearm should now smoothly rotate from the platter center to its rest 71 Cue Control By moving the lever 1194 forward I 1 lift cam 197 rotates The slide bar 219 connected to lt transmits this movement to the lift pin 206 via the ...

Page 10: ...peration of the tonearm the unit is fitted with a short circuiter Control of the switch springs for both channels is effected by the camwheel With the unit in neutral state the short circuit of the pick up leads is eliminated Adjustment In zero position of the cam there should be a clearance of ap proximately 0 5 mm between the contacts of the short circuiter This clearance should be adjusted by b...

Page 11: ...d during transit Remedy Remove platter Insert screwdriver through the hole in the chassis mounting plate and loosen screw at tonearm head Align tonearm head and retighten screw Fig 18 Defect Cause Stylus siips out of a Tonearm is not ba playing groove lanced Fig 17 Fig 18 Remedy a Balance tonearm b Tonearrn tracking b Adjust tracking force to the value stated by the cartridge force is too low manu...

Page 12: ...Tonearm compl 49 244 467 1 Weight compl 50 239 741 1 Pointer 51 244 468 1 Bearing frame compl 52 236 051 1 Clamp screw 53 244 244 2 Washer 3 5 6 1 5 54 244 103 2 Hexagon sheet screw 2 9 x 6 5 Remedy Referring to page remove cue control plate 201 Remove adjustment bush sleeve 202 Remove lift pin 204 and com pression spring 203 Clean lift tube and lift pin Smear lift pin evenly with Wacker Silicone ...

Page 13: ...Fig 19 Exploded view 1 0 21 11 10 ...

Page 14: ...Fig 20 Exploded view 2 14 ...

Page 15: ...plate compl 202 243 125 1 Adjustment bush 203 210 366 1 Hex nut Pos Part No Qty Description 204 234 73 1 Compression spring 205 210 469 1 Machine screw AM 3 x 3 206 234 795 1 Lift pin 207 244 481 1 Segment compl 208 218 591 1 Tension spring 209 201 184 1 Adjustment washer 210 210 587 2 Washer 3 2 7 1 211 210 362 2 Hex nut M3 212 201 187 1 Washer 213 210 145 5 Lock washer 2 3 214 238 192 1 Skating ...

Page 16: ...al bushes Bearing points and friction faces should be lubricated sparingly rather than generously When using different lubricants chemical decomposition can often occur To prevent failure of lubrication we recommend using the original lubricants stated below Wacker Silicone oil AK 500 000 BP Super Viskostatik 10 W 30 Shell Alvania No 2 Fig 21 Fig 22 49 Dual ClEa im 44 1 o Dual Gebrüder Steidinger ...

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