Sony CFS-B7SMK2 Page 10 Service Manual Download

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• FM VCO Adjustment

Setting:

Procedure:
1. Connect a frequency counter as shown below.
2. Tune the FM tuner to 98 MHz.
3. Adjust RV1 so that the frequency counter reading is 76 kHz.

Specification : 75,950 Hz to 76,050 Hz

Adjustment Location:

–TUNER board (conductor side)–

IC1

frequency counter

0.01

33 k

Ω

–TUNER board (component side)–

FREQUENCY

FREQUENCY

COVERAGE

Adjustment

SW2

FREQUENCY

COVERAGE

Adjustment

SW1

FREQUENCY

COVERAGE

Adjustment

TELESCOPIC
ANTENNA INPUT

SW1

TRACKING

Adjustment

SW2

TRACKING

Adjustment

TRACKING

Adjustment

CT8

L2 CT2

CT4 L8

FM IF

Adjustment

TRACKING

Adjustment

AM IF

Adjustment

CT1

CT6

CT3

TRACKING

Adjustment

Modulation: no modulation

Carrier frequency : 98MHz

Output level: 0.1 V (100 dB)

FM RF SSG

telescopic antenna
input

set

0.001

www. xiaoyu163. com

QQ 376315150

TEL 13942296513

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

Summary of Contents for CFS-B7SMK2

Page 1: ...tput 2 5 W 2 5 W 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 110 120 V 220 240 V AC selectable 50 60 Hz Power consumption AC 14 W Dimensions Approx 500 155 164 mm w h d 193 4 61 8 61 2 inches incl projecting parts and controls not incl handle Mass Approx 2 7 kg 5 lb 15...

Page 2: ... Pointer Setting 7 3 MECHANICAL ADJUSTMENTS 8 4 ELECTRICAL ADJUSTMENTS 4 1 Tape Section 8 4 2 Tuner Section 9 5 DIAGRAMS 5 1 Circuit Boards Location 11 5 2 Printed Wiring Board Tuner Section 12 5 3 Schematic Diagram Tuner Section 13 5 4 Schematic Diagram Audio Section 15 5 5 Printed Wiring Board Audio Section 17 6 EXPLODED VIEWS 6 1 Front Cabinet Section 19 6 2 Rear Cabinet Section 20 6 3 Mechanis...

Page 3: ...nual SECTION 1 GENERAL www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 4: ...63 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 5: ... chassis TUNE indicator indicator slider D 1 knob TUNE 2 knob BAND 3BVTP 3 10 Note Be careful when removing as it is engaged as shown in Fig A and Fig B Fig A Fig B 2 BVTP 3 12 3 BVTP 3 16 4 BVTP 3 12 5 BVTP 3 12 6 CN912 7 front cabinet assy 1 lid battery case www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498...

Page 6: ...6 CN901 5 CN911 4 TUNER board TERMINAL ANTENNA 9 AC board 0 SECOND board 8 T901 7 BVTP 3 10 1 knob FINE TUNE www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 7: ...LUME 3 Set the chassis TUNE 4 BVTP 3 10 1 Turn the VC drum in the direction of the allow to its end 2 Set the pointer to the center of three vertical lines pointer www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 8: ... CQ 102C CQ 102C CQ 102C CQ 102C CQ 201B CQ 201B Mode Forward 4 1 TAPE SECTION Standard output level Test tape Tape Speed Adjustment Procedure Mode Playback 1 Playback the test tape in the FWD playback mode 2 Confirm that the digital frequency counter reading indicates a value in the range of 2 940 to 3 060 Hz at tape top 3 If the specification is not satisfied adjust variable resistor of motor M9...

Page 9: ...y 400 Hz signal output level as low as possible AM RF signal generator telescopic antenna input set 11 PF phones jack set 32 Ω level meter range 0 5 5 V ac 22 5 kHz frequency deviation by 400 Hz signal output level as low as possible FM RF signal generator telescopic antenna input set 0 01 µF MW FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on Level meter L8 520 kHz 516 kHz CT4 1 680 ...

Page 10: ... FREQUENCY COVERAGE Adjustment SW1 FREQUENCY COVERAGE Adjustment TELESCOPIC ANTENNA INPUT L5 SW1 TRACKING Adjustment L7 SW2 TRACKING Adjustment MW TRACKING Adjustment CT8 L4 L2 CT2 CT4 L8 FM IF Adjustment T1 FM TRACKING Adjustment T2 AM IF Adjustment CT1 L1 L3 CT6 L6 MW CT3 TRACKING Adjustment Modulation no modulation Carrier frequency 98MHz Output level 0 1 V 100 dB FM RF SSG telescopic antenna i...

Page 11: ... AM OSC AFC FM OSC REG FM RF AM RF IN FM RF IN BAND SELECT AM IF IN FM IF IN TUNE IND GND VCC L CH OUT R CH OUT ST IND VCO CHECK PILOT DET LPF2 PILOT DET LPF2 PLL LPF1 AGC AFC2 AGC AFC1 RIPPLE FILTER FM GND FM AM FE OUT SECOND board AUDIO board MIC board SUPPORT board TUNER board TRANSLATION HEAD board BATT board AC board RELAY board IC1 CXA1238S www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL...

Page 12: ... Line H adjustment for repair Power voltage is dc 9 V and fed with regulated dc power supply from battery terminal Voltages is dc with respect to ground under no signal detuned conditions no mark FM MW SW PB REC Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal production toler ances Signal path F FM E PB a REC L SW1 g SW2 f MW Note The components id...

Page 13: ...C BLOCK DIAGRAM w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 14: ... w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 15: ...No Description Remarks 4 5 13 12 11 1 7 2 1 1 1 1 SP901 1 2 2 2 1 SP902 1 3 2 3 not supplied 10 1 X 3376 542 1 CABINET FRONT SUB ASSY BLACK EA 1 X 3376 543 1 CABINET FRONT SUB ASSY RED EA 1 X 3376 544 1 CABINET FRONT SUB ASSY BLACK E SP 1 X 3376 545 1 CABINET FRONT SUB ASSY RED E SP 2 3 029 934 01 LID CASSETTE BLACK 2 3 029 934 11 LID CASSETTE RED 3 3 031 224 01 WINDOW CASSETTE 4 3 025 555 01 SPRI...

Page 16: ... 70 3 025 548 01 HANDLE SIDE 71 3 025 549 01 HANDLE C BLACK 71 3 025 549 11 HANDLE C RED 72 3 025 539 21 KNOB VOLUME 73 3 025 540 21 KNOB HYPER TREBLE MEGA BASS 74 3 025 542 01 KNOB BAND BLACK 74 3 025 542 11 KNOB BAND RED 75 3 025 544 01 KNOB FINE TUNE BLACK 75 3 025 544 11 KNOB FINE TUNE RED 76 3 029 701 01 SPRING TERMINAL COIL 77 3 025 543 01 KNOB TUNE BLACK 77 3 025 543 11 KNOB TUNE RED 78 3 0...

Page 17: ... 024 606 01 SLIDER MD 121 3 024 591 01 GEAR B SO 122 3 024 584 01 GEAR MID B 123 3 024 977 01 SPRING EJECT TORSION 124 3 024 587 01 GEAR MANUAL D 125 3 024 563 01 LEVER A SO 126 3 024 562 01 LEVER M LOCK 127 3 024 976 01 SPRING SO LEVER B TORSION 128 3 024 983 01 SPRING CNT TORSION 129 3 024 607 01 LEVER B SO 130 3 024 974 01 SPRING M LOCK LEVER TORSION 133 3 024 986 01 SPRING M KNOB TORSION 134 3...

Page 18: ...3 024 609 01 SLIDER D 159 X 3375 504 1 CHASSIS ASSY HEAD 160 3 024 987 01 SPRING TENSION 161 3 024 988 01 SPRING TENSION 162 X 3375 582 1 TABLE ASSY HEAD 163 X 3375 581 1 HOLDER ASSY HD 164 3 309 597 91 SCREW 1 4 TAPPING 165 3 386 150 01 RING ROLLER RETAINING 166 3 313 850 03 SPRING TENSION 167 3 377 197 21 SHEET AZ HE901 1 500 338 11 HEAD MAGNETIC ERASE HRP901 1 543 872 11 HEAD MAGNETIC REC PB ww...

Page 19: ...PPING 205 3 024 603 01 GEAR REEL 206 3 024 981 01 SPRING COMPRESSION 207 3 024 583 01 SPRING HOLDER 208 4 931 795 01 WASHER 209 3 024 611 01 DETENT CASSETTE 210 3 024 600 01 ARM PAS 211 3 024 580 01 SLIDER PAUSE 212 3 024 608 01 PIN PAUSE LOCK 213 3 024 992 01 SPRING FWD TORSION www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 ...

Page 20: ...59 01 SLIDER REW 256 3 024 560 01 SLIDER FWD 257 3 024 573 01 SLIDER REC 258 3 024 588 01 LEVER FW ID 259 3 027 181 01 SLIDER FR 260 3 027 069 01 SPRING FRW TORSION 261 3 024 975 01 SPRING IDLER LEVER TORSION 262 3 024 984 01 SPRING K COMPRESSION 263 3 321 483 11 RING RETAINING www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 Q...

Page 21: ...uF 10 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 91 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...

Page 22: ...11 CARBON 10K 5 1 4W R314 1 249 417 11 CARBON 1K 5 1 4W F R315 1 249 421 11 CARBON 2 2K 5 1 4W F R341 1 249 393 11 CARBON 10 5 1 4W F R342 1 249 435 11 CARBON 33K 5 1 4W R345 1 249 398 11 CARBON 27 5 1 4W F R349 1 249 425 11 CARBON 4 7K 5 1 4W F R351 1 249 417 11 CARBON 1K 5 1 4W F R352 1 249 417 11 CARBON 1K 5 1 4W F R353 1 249 437 11 CARBON 47K 5 1 4W R355 1 249 441 11 CARBON 100K 5 1 4W R391 1 ...

Page 23: ...10 50V C50 1 162 282 31 CERAMIC 100PF 10 50V C51 1 162 294 31 CERAMIC 0 001uF 10 50V C52 1 162 202 31 CERAMIC 13PF 5 50V C53 1 162 287 31 CERAMIC 270PF 10 50V C71 1 162 306 11 CERAMIC 0 01uF 30 16V FILTER CF1 1 760 738 61 FILTER CERAMIC CF2 1 567 670 11 FILTER CERAMIC CONNECTOR CN1 1 506 987 11 PIN CONNECTOR PC BOARD 5P TRIMMER CT6 1 141 485 11 CAP ADJ 5PF CT8 1 141 485 11 CAP ADJ 5PF VARIABLE CAP...

Page 24: ...WER S902 1 571 556 11 SWITCH LEAF DIRECTION SP901 1 505 955 11 SPEAKER 10cm SP902 1 505 955 11 SPEAKER 10cm T901 1 431 916 11 TRANSFORMER POWER ACCESSORIES PACKING MATERIALS 1 569 008 21 ADAPTOR CONVERSION 2P EA 1 769 412 13 CORD POWER 3 865 191 11 MANUAL INSTRUCTION ENGLISH 3 865 191 21 MANUAL INSTRUCTION FRENCH SPANISH E SP 3 865 191 41 MANUAL INSTRUCTION ARABIC EA HARDWARE LIST 1 7 685 647 79 S...

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