Sony CFS-B5LMK2, Service Manual

Page 1: ...ut Headphones jack stereo minijack for 16 68 ohms impedance headphones Maximum power output 2 5 W 2 5 W SPECIFICATIONS Battery life FM recording Sony R20P approx 16 hours Sony LR20 alkaline approx 36 hours Playback Sony R20P approx 8 hours Sony LR20 alkaline approx 21 hours Power requirements 230 V AC 50 Hz 9 V DC six R20 size D batteries Power consumption AC 14 W Dimensions Approx 500 155 164 mm ...

Page 2: ...cuit Boards Location 13 5 3 Printed Wiring Board Tuner Section 14 5 4 Schematic Diagram Tuner Section 15 5 5 Printed Wiring Boards Main Section 17 5 6 Schematic Diagram Main Section 19 6 EXPLODED VIEWS 6 1 Cabinet Front Section 21 6 2 Cabinet Rear Section 22 6 3 Tape Mechanism Deck Section 1 23 6 4 Tape Mechanism Deck Section 2 24 7 ELECTRICAL PARTS LIST 25 SAFETY RELATED COMPONENT WARNING COMPONE...

Page 3: ... 3 SECTION 1 GENERAL This section is extracted from instruction manual ...

Page 4: ... 4 ...

Page 5: ...C Second board Audio Microphone ISS board Note Follow the disassembly procedure in the numerical order given 2 1 CABINET FRONT SUB ASSY B SECTION 2 DISASSEMBLY 2 2 CHASSIS TUNE 2 BVTP 3x12 3 BVTP 3x16 4 BVTP 3x12 5 BVTP 3x12 6 CN912 7 cabinet front sub assy B 1 lid battery case 4 chassis TUNE 1 knob TUNE 2 knob FUNCTION 3 BVTP 3x10 ...

Page 6: ... MECHANISM BLOCK 2 4 TUNER AC SECOND BOARD 1 BVTP 3x10 2 CN301 4 tape mechanism block 3 CN601 2 BVTP 3x10 4 CN1 7 CN901 6 CN911 5 TUNER board 0 AC board SECOND board 3 BVTP 3x10 8 BVTP 3x10 9 BVTP 3x10 1 knob FINE ...

Page 7: ...is MD 9 lever FUNCTION tapping screw 3x12 lSS board 4 BVTP 3x10 6 MICROPHONE board 5 SUPPORT board 7 BVTP 3x10 8 AUDIO board 0 CN341 1 knob VOL 2 Set the pointer to the center of scratched lines 3 Set the chassis TUNE 4 BVTP 3x10 1 Turn gear VC counterclockwise to the end pointer ...

Page 8: ...cm back tension 0 014 0 069 oz inch Fast CQ 201B 55 140 g cm Forward 0 76 1 94 oz inch Rewind CQ 201B 55 140 g cm 0 76 1 94 oz inch Tape Tension Measurement Mode Tension meter Meter reading Forward CQ 403A more than 170 g more than 6 00 oz SECTION 4 ELECTRICAL ADJUSTMENTS SECTION 3 MECHANICAL ADJUSTMENTS 4 1 TAPE RECORDER SECTION 0 dB 0 775 V Standard Output Level Output terminal HP OUT load imped...

Page 9: ... maximum reading on level meter T2 455 kHz LW FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L4 CT8 145 kHz 300 kHz LW TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L3 2 CT7 160 kHz 260 kHz SW FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L6 CT6 5 8 MHz 18 4 MHz SW TRACKING ADJUSTMENT Adjust for a maximum reading on level met...

Page 10: ...board component side FM VCO Adjustment RV1 FM FREQUENCY COVERAGE Adjustment MW FREQUENCY COVERAGE Adjustment LW FREQUENCY COVERAGE Adjustment SW FREQUENCY COVERAGE Adjustment SW TRACKING Adjustment LW TRACKING Adjustment MW TRACKING Adjustment FM TRACKING Adjustment T2 AM IF Adjustment FM IF Adjustment T1 L2 CT2 CT4 L8 CT6 L6 CT8 L4 CT5 L5 L3 2 CT7 L3 1 CT1 L1 CT3 TELESCOPIC ANTENNA INPUT IC1 7 FM...

Page 11: ... LW PB REC CV1 2 TUNE CV4 TUNE CV3 TUNE RV2 FINE TUNE T1 FM IF CT2 L2 FM FREQUENCY COVERAGE CT1 L1 FM TRACKING CT5 L5 SW TRACKING CT3 L3 1 MW TRACKING T2 AM IF R CH 9V D901 D901 904 RECT D902 D903 D904 DRY BATTERY SIZE D IEC DESIGNATION R20 6PCS 9V MIC301 MIC S303 ISS 1 2 S301 3 REC PB PB REC S301 1 REC PB PB REC S301 4 REC PB PB REC R CH R CH PB IN PB IN REC REC MIC MEGA BASS RV353 1 L CH HYPER T...

Page 12: ...TING PD 1 PD 2 AUTOBLEND BAND PASS MUTE TUNING INDICATOR AM IF DET FM IF DISCRI GND PLL LPF2 MPX REG VCO MUTE AM OSC AFC FM OSC REG OUT FM RF AM RF IN FM RF IN FE GND FM AM FE OUT FM DISCRI BAND SELECT AM IF IN FM IF IN TUNED IND GND AFC AGC 2 AFC AGC 1 VCC LCH OUT RCH OUT PLL LPF 1 PILOT DET LPF 1 PILOT DET LPF 2 ST IND VCC CHECK RIPPLE FILTER 5 3 PRINTED WIRING BOARD TUNER SECTION Note X parts e...

Page 13: ...re in Ω and 1 4 W or less unless otherwise specified internal component C panel designation U B Line H adjustment for repair Power voltage is dc 9 V and fed with regulated dc power supply from battery terminal Voltage is dc with respect to ground under no signal detuned condition no mark FM MW LW SW Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal pr...

Page 14: ...K2 17 18 Note X parts extracted from the component side b Pattern from the side which enables seeing Semiconductor Location Ref No Location D351 E 1 D352 F 1 D353 F 2 D901 F 9 D902 F 8 D903 F 10 D904 F 9 D911 A 2 IC301 E 3 IC305 E 5 Q151 D 4 Q251 D 4 Q340 F 5 Q341 F 2 Q351 E 1 Q951 F 2 Page 14 ...

Page 15: ...asured with no cassette installed Power voltage is dc 9 V and fed with regulated dc power supply from battery terminal Voltage and waveforms are dc with respect to ground under no signal detuned conditions no mark FM PB REC Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with a oscilloscope Voltage variati...

Page 16: ... dotted line with mark are critical for safety Replace only with part number specified 51 3 025 530 01 POINTER 52 3 025 529 01 CHASSIS TUNE 53 3 025 545 01 SHAFT TUNE 54 3 025 560 01 SPRING TU 55 3 025 546 01 SHAFT FUNCTION 56 3 025 556 01 SPRING REC 57 3 025 534 01 BUTTON REC 58 3 025 537 01 BUTTON PLAY 59 3 025 536 01 BUTTON REW 60 3 025 535 01 BUTTON FF 61 3 025 538 01 BUTTON STOP 62 3 025 533 ...

Page 17: ...REEL 108 3 008 590 01 SLIDER REC 109 3 008 592 01 BASE H HEAD 110 3 008 588 01 SLIDER REW 111 3 008 589 13 SLIDER FF 112 3 008 587 01 SLIDER STOP 113 3 008 591 01 SLIDER PAUSE 114 3 933 004 01 CLAW REEL 115 3 933 021 01 SLIDER FRP 116 3 933 006 01 SLIDER EJECT 117 3 934 833 01 SPRING FRP 118 3 022 794 02 SPRING BT 119 3 933 007 01 PLATE LOCK 120 3 012 114 01 LEVER FR HE101 1 543 876 11 HEAD ERASE ...

Page 18: ...48 01 LEVER S OFF 159 3 939 383 02 SPRING COMPRESSION 160 3 009 650 02 SPRING K COMPRESSION 161 3 936 438 01 LEVER K 162 X 3373 572 1 REEL ASSY N T 163 3 933 020 01 BELT 164 X 3372 924 1 FLYWHEEL ASSY 165 3 932 993 01 CHASSIS OUTSERT 166 3 937 760 01 SPRING GROUND COMPRESSION 167 3 343 358 01 RING RETAINING 168 3 933 005 01 SPRING CAM COMPRESSION 169 3 016 349 01 WASHER 170 3 934 336 01 BEARING M9...

Page 19: ...0 50V C203 1 124 443 00 ELECT 100uF 20 10V C204 1 162 843 11 CERAMIC 0 022uF 10 16V C205 1 162 302 11 CERAMIC 0 0022uF 20 16V C211 1 126 956 11 ELECT 0 1uF 20 50V C215 1 124 252 00 ELECT 0 33uF 20 50V C216 1 162 306 11 CERAMIC 0 01uF 30 16V C251 1 136 160 00 FILM 0 039uF 5 50V C252 1 136 165 00 FILM 0 1uF 5 50V C291 1 124 473 11 ELECT 1000uF 20 10V C297 1 136 165 00 FILM 0 1uF 5 50V C301 1 126 941...

Page 20: ...CARBON 4 7K 5 1 4W R218 1 247 843 11 CARBON 3 3K 5 1 4W R250 1 249 421 11 CARBON 2 2K 5 1 4W R291 1 247 807 11 CARBON 100 5 1 4W R296 1 249 417 11 CARBON 1K 5 1 4W R301 1 249 407 11 CARBON 150 5 1 4W R306 1 249 433 11 CARBON 22K 5 1 4W R311 1 249 429 11 CARBON 10K 5 1 4W R314 1 249 417 11 CARBON 1K 5 1 4W R315 1 249 421 11 CARBON 2 2K 5 1 4W R341 1 249 393 11 CARBON 10 5 1 4W R342 1 249 435 11 CAR...

Page 21: ... C24 1 126 963 11 ELECT 4 7uF 20 50V C25 1 126 956 11 ELECT 0 1uF 20 50V C26 1 162 203 31 CERAMIC 15PF 5 50V C27 1 161 050 00 CERAMIC 0 0082uF 10 16V C28 1 161 050 00 CERAMIC 0 0082uF 10 16V C29 1 162 282 31 CERAMIC 100PF 10 50V C30 1 162 282 31 CERAMIC 100PF 10 50V C32 1 162 195 31 CERAMIC 4 7PF 10 50V C33 1 162 211 31 CERAMIC 33PF 5 50V C35 1 162 282 31 CERAMIC 100PF 10 50V C36 1 102 945 00 CERA...

Page 22: ...247 854 11 CARBON 9 1K 5 1 4W R32 1 249 441 11 CARBON 100K 5 1 4W R33 1 249 415 11 CARBON 680 5 1 4W VARIABLE RESISTOR RV1 1 228 995 00 RES ADJ METAL 22K RV2 1 225 637 11 RES VAR CARBON 100 FINE TUNE SWITCH S1 1 571 147 11 SWITCH LEVER SLIDE BAND TRANSFORMER T1 1 409 944 11 COIL DET T2 1 406 952 11 TRANSFORMER IF MISCELLANEOUS 7 1 769 412 11 CORD POWER ANT1 1 501 918 21 ANTENNA TELESCOPIC HE101 1 ...