JVC QL-F6 Service Manual Download Page 14 | Manualshive

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Summary of Contents for QL-F6

Page 1: ...JVC MODEL taL Fe QUARTZ FULLY AUTOMATIC TURNTABLE No 2464 FEB 1979 ...

Page 2: ...4 TonearmElevator 5 Overhang 6 Lead in 7 Lead out 8 TrackingForce 9 Anti skating 10 HO VODamping 8 OL F6BlockDiagram 9 Troubleshooting Charts 1 Platter does not rotate 2 Platter rotates at high speed 3 Pitch Control operates abnormally 10 Exploded Views and Parts List 10 1 Cabinet Mechanism Ass y 10 2 Mechanism Ass y 10 3 TonearmAss y 11 Printed Circuit Board Ass y and Parts List 11 1 MDC 938G 11 ...

Page 3: ...ency response 10 Hz 25 000 Hz Output 3 mV 1 kHz Channel separation 25 dB 1 kHz using the test record TRS 47 100 k ohms 10 x 10 6 cm dyne dynamic 30 x 10 6 cm dyne static DT Zl EB 0 3 x 0 7 mil diamond elliptical Optimum tracking force 1 75 g 0 25 g GENERAL Power consumption Dimensions Load resistance Compliance Stylus Weight Accessories EP adapter 15W Height 14 2 cm with closed cover Width 45 6 cm...

Page 4: ...rated by ambient vibrations or sound pressure or the tone arm can be influenced by adverse conditions of the record such as warps etc The OIL DAMPED TONEARM i designed to suppress the range of resonance by maintaining a low resonant point of the tonearm to prevent howling With this OIL DAMPED TONEARM accurate tracking of the record groove as well as a good resistant character istic to howling is p...

Page 5: ...he center of the platter and at the same time eliminates any excessive stylus tip force on the inner wall of the record groove Use the 8 marked dial when em ploying a spherical stylus Use the marked dial when employing an elliptical stylus or a SHIBATA stylus Turn the dial to the same number as on the track ing force dial 9 REPEAT knob Decide how many times you want to re listen to the record by u...

Page 6: ...e headshell lead wires are color coded as follows connect them correctly White L Red BlueH LE Green 4 Mount the cartridge properly onto the headshell and leave the set screws slightly loosened then after completing the Overhang adjustment See page 9 tighten them firmly After this adjustment be sure that the conditions concerning the 3 adjustments on page 5 and 6 are satisfactorily met 5 After each...

Page 7: ...tion 6 3 Fully Automatic Mechanism Apply high quality grease to connecting and sliding parts after they are replaced 7 1 QUARTZ LOCK PITCH CONTROL Meter How to use the QUARTZ LOCK PITCH CONTROL meter See Fig 7 QUARTZ LOCK When the QUARTZ LOCK PITCH CONTROL select button 1 is depressed to tbe QUARTZ LOCK position the meter 2 becomes green lit In this mode the rota tion speed is accurately controlle...

Page 8: ... control Adjust V R5 to near its middle position with the speed selector set to 33 1 3 until the correct speed is obtained 5 VR6 10k Q Pitch control located on front panel For detail see PITCH CONTROL on page 6 QL No 2464 Fig 2 Adjustmerrt method See Fig 7 C Perform mechanical adjustment for the meter to indicate the center position before connecting to an AC outlet for electrical adjustment 1 Adj...

Page 9: ...it Tonearm Section 7 3 Headshell Angle Headshell mounting angle adjustment See Fig 8 If the headshell is not horizontal and the stylus tip is not perpendicular to the record surface loosen the lock screws as shown in the illustration and move the head shell to adjust the stylus to be at right angles 90 with the platter Eye measurement is sufficient Be sure to retighten the screws after the adjustm...

Page 10: ...n position is about 3 to 4 mm inward from the outermost edge of the record disc 4 If the lead in position is not in the proper range turn the adjustor screw with a screwdriver clockwise to increase the distance between the lead in position and the outermost edge and counterclockwise to decrease the distance Thus determ ine the proper lead in posi tion point to be about 3 to 4 mm inward from the di...

Page 11: ...he tonearm is balanced Stop turning the counterweight when the stylus tip is almost touching the disc surface 8 Return the tonearm to the rest and clamp it 9 Hold the counterweight at the adjusted position and turn the tracking force dial until the mark is aligned with the index line on the tonearm weight shaft See Fig 19 10 Turn the counterweight in the B direction until the 75 mark on the dial i...

Page 12: ...with the index line since the optimum tracking force for this unit is 1 75 g When not using the oil damped function turn the knobs until the 0 mark is aligned with the index line See Fig 22 Caution Turning the HQ and VQ damping control knobs while playing a record may cause damage to the disc or to the stylus tip Do not touch them while playing a disc Release the tonearm clamp and start playing th...

Page 13: ...tive 12 X16 is defective Fig 24 Yes Check all driving coils Check transistors X1 X12 and Hall elements HG1 HG2 Note Don t disconnect the motor from electronic circuits while troubleshooting as transistors in drive circuit may be damaged Yes IC5 is defective Replace Yes Is R70 discon nected or badly soldered Yes IC1 is defective Replace Perform locking adjustment or check the phase Yes Check if C22...

Page 14: ...nt at Pin 7 of IC4 Yes X17 is defective Replace Yes Check the Schmitt cir cuit and AC amplifier sections and the FG output of motor Fig 25 Is the waveform shown in the circuit diagram present at Pin 4 of IC1 Yes Check if C22 R6 R68 are disconnected Replace if they are Yes Check if IC1 is defec tive R67 is disconnect VR4 is open Replace if necessary Note Don t disconnect the motor from electronic c...

Page 15: ... side and remains there Collector and emitter of X 18 are short cir cuited Replace this transistor Readjust and observe 14 Is D6 or D7 short circu ited Replaced Yes Disconnected or de fective R 11 Replace Yes Check if R52 is dis connected Replace if defective Fig 26 The collector and emit ter of X 19 are short circuited Replace this transistor Readjust and observe Check if R12 is dis connected Rep...

Page 16: ... 9L j sSV ws ue4 all l 18 a au q L a S l s a Jed pue SMa J papoldx3 0 L 179171 9 1 ...

Page 17: ...or for U Mil itary Market and other countries only E65329 o01 Holder OSE2235 203BS Seesaw Switch E66153 001 Weight E61284 001 Tapping Screw E35845 o01 Bottom Cover Ass GBGB3012M Tapping Screw See table below Foot Ass E65877 001 Latch E65878 001 Pin E22874 o01 Turntable See table below Turntable Sheet E35828 o01 Dust Cover Ass E10298 001 Dust Cover E61992 o05 Hinge Ass SDSP3010RS Screw REE4000 E Ri...

Page 18: ...ut E60404 001 Spring E65744 O01 Ratchet Cam E65745 001 Spring E60912 001 Speed Nut E65746 O01 Start Lever E65747 001 Spring QL No 2464 No Parts Number Description E65748 001 Lock Lever E60416 001 Spring E35852 001 Index Lever E60426 003 Lever E60427 001 Spring E65873 O01 Select Plate E65749 O01 Select Lever E60488 001 Spring G41505 O05 Steel Ball E60390 002 Elevator Cam E 65874 00 1 Spring REE3000...

Page 19: ...E49602 002 Wave Washer 102 E35901 001 Anti skating Lever 102 E65825 001 Anti skating Plate 102 8 E65827 001 Anti skating Spring 102 65826 001 Spring Holder 102 SBSB2608Z Tapping Screw 102 E65829 001 Elevator Ass 102 E49649 001 Spring 102 E61194 001 102 E49655 007 Elevator Shaft 102 REE3000 E Ring 18 No Parts Number Description 102 E65835 001 Screw 102 E65824 001 Rest Ass 102 SBSB2616Z Tapping Scre...

Page 20: ...11 Printed Circuit Board Ass y and Parts List 11 1 MDC 938G Different in Different Area see back page QL No 2464 19 ...

Page 21: ... pF DC 50 V Ceramic 20 Capacitors No Parts Number Rating Description C17 QCT05UJ 330 33 pF DC 50 V Ceramic C18 QCE12HP 103 01 Jl F DC 500 V C19 QCF11 HP 223 022 Jl F DC 50 V C20 QFM41HK 473 047 Jl F Mylar C21 QCF11HP 103 01 Jl F Ceramic C22 QFM41HK 104 1 Jl F Mylar C23 QFM41HK 473 047 Jl F C24 QCF11HP 103 01 Jl F Ceramic C27 QCT05CH 151 150 pF DC 50 V C28 QCT05CH 151 C29 QET41VR 106 10 Jl F DC 35 ...

Page 22: ...R80 QRD143J 102 1 k l1 VR1 RVAV310 472 7 k l1 Variable VR2 RVGV811 472 VR4 RVGV413 473 47 k l1 VR5 RVGV811 103 10 k l1 Others No Parts Number Rating Description LA O303 Quartz Crystal E03732 0 15A Plug E65674 Heat Sink QSPO026 001 Push Switch Item No Part Number Description Cl01 See back page Capacitor ffi Fuse ffi Fuse clip ffi ffi Safety Parts S Military Description Canada Europe Australia Marke...

Page 23: ...t Numbers E34725 002 Nylon Covering E36997 020 Protect Sheet G6771 Caution Label E22934 001 Platter Case E22493 311 Corner Pad PK QLF6E Carton Box 24 E22949 002 Sheet Ass NZ QLF6 Packing Sheets and Pad E61848 001 Plate QL No 2464 ...

Page 24: ... 0 5 AI 0 5 A 0 2 AT 0 2 AT 0 2 AT 0 5 A Fuse Secondary OMF61U1 1RO OMF61U1 1RO OMF51A2 R80 OMF51 A2 R80BS OMF51 A2 R80 OMF60S1 R80 1A lA O 8AT O 8A T 0 8AT 0 8A FuseClipit E45524 001 E45524 001 E48965 002 E48965 002 E48965 002 E45524 001 Shield Cover E65716 001 E65716 001 E65716 o01 E65716 001 Power Transformer it E03032 33B E03032 33B E03032 33C E03032 33CBS E03032 33C E03032 33D Rubber Sheet E6...

Page 25: ...V 3 ib I D o 1i3 5Vl R66 1 v 1Y 3 12 11 h tR I 101 W 1 r n C0 0 Ji 0 i 31 R7 T if o o 6 l m li 7K R68 0 Q G5Vl C2 C23 R33 1W l2 J R79 I IK 01 0047 D3 CB 0 13 2VI 10 CZ4 7 1 C69 0 001 25V 33K rn n 31415 455 IVI J1 his 0 455 I om PICTH r1 ol1 n 3 5VI 0 I BVI 9V 0 Vcc RED IC3 t IQ LOCK 0 6V3 6V3 6V3 6VI0 0 l Q yf EBS forEngland EP EU forPacex Otherareas I R5 47 40ms 47K RI5 47K RI4 47K R70 lOOK r 14 ...

Page 26: ... fq ...

Page 27: ...l aK CP In FsOut Fs In FG In RC HC Oul v F V GNO 250794 2SA733 P 25B605 K 25C2259 F 2 0325iV D 2SA733 P 2 A 945 K 25C641 K B W02 RO5 6EKVM2 VD1220 15553 15953 VC4046 NJM78LO8A M5M4001 NJM45580 NJM45580 X 1 X4 X 5 X8 X9 XI2 X I 3 X 14 X 16 XI5 X17 XI9 X22 X 27 X20 X21 D3 07 0 II 09 ICI IC2 lC3 IC4 1C5 i LAMP QL OFF 0 Ir USA Canada EO3032 33B P TRANS ORG EE EA for Europe Aushalia E03032 33C P TRANS ...

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