Sony CFD-V37 Service Manual
Sony CFD-V37 Service Manual

Sony CFD-V37 Service Manual

Cd radio cassette-corder
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SERVICE MANUAL
Ver 1.0 1999 . 04
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength:780 nm
Emission duration : Continuous
Laser output : Less than 44.6 µW
(This output is the value measured at a distance
of about 200 mm from the objective lens surface
on the optical pick-up block with 7 mm
aperture.)
Spindle speed
200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels
2
Frequency response
20 – 20,000 Hz + 1/-2 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM : 87.6 – 107 MHz(E4,EA)
AM : 530 – 1,605 MHz(E4,EA)
IF
FM : 10.7MHz
AM : 455kHz
Aerials
FM : Telescopic aerial
AM : Built-in ferrite bar aerial
MICROFILM
SPECIFICATIONS
87.6 – 108 MHz(E92)
530 – 1,710 MHz(E92)
CFD-V37
Model Name Using
CD Section
Similar Mechanism
Tape Section
Optical Pick-up Type
Tape Transport Mechanism Type
Cassette-corder section
Recording system
4 -track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette
C-60
Frequency response
TYPE1 (normal) : 70 – 10,000 Hz
General
Full range : 10 cm dia., 3.2 Ω, cone type
Speakers
(2)
Outputs
Headphones jack (stereo minijack)
For 16 – 64 Ω impedance headphones
2.5 W + 2.5 W (at 3.2 Ω, 10 % harmonic
Power output
distortion)
Power requirements
For CD radio cassette-corder :
110 – 120 V, 220 – 240 V AC
Selectable, 50/60 Hz(E4,EA)
120V 60 Hz(E92)
9V DC, 6 size D (R 20) batteries
For memory controller :
3V DC, 2 size AA (R 6) batteries
CD RADIO CASSETTE-CORDER
E Model
CFD-V34
KSM-213CDM
MF-V10-117
— Continued on next page —

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Summary of Contents for Sony CFD-V37

  • Page 1 Compact disc digital audio system Recording system 4 -track 2 channel stereo Laser diode properties Material: GaAlAs Fast winding time Approx. 120 s (sec.) with Sony cassette Wavelength:780 nm C-60 Emission duration : Continuous Frequency response TYPE1 (normal) : 70 – 10,000 Hz Laser output : Less than 44.6 µW...
  • Page 2: Table Of Contents

    FM recording Sony R20P : approx. 13.5 h 3. DISASSEMBLY 3-1. Front Cabinet, Control (1) Board, Control (2) Board, Sony alkaline LR20 : approx. 19 h Headphone Board ······························································· 5 Tape playback 3-2. Upper Cabinet ····································································· 5 Sony R20P : approx. 7.5 h 3-3.
  • Page 3: Service Notes

    SECTION 1 SERVICE NOTES Laser component in this product is capable NOTES ON HANDLING THE OPTICAL PICK-UP of emitting radiation exceeding the limit for BLOCK OR BASE UNIT Class 1. The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc., on clothing and the human body.
  • Page 4: General

    SECTION 2 GENERAL LOCATION OF CONTROLS !• !¶ !§ !∞ !¢ !£ !™ !¡ !º !º POWER button TONE (H) button !¡ Tape operating buttons CD operating !™ FUNCTION buttons TONE (L) button !£ LOOP button !¢ OPEN/CLOSE button DISPLAY/ENTER button !∞...
  • Page 5: Disassembly

    SECTION 3 DISASSEMBLY • The equipment can be removed using the following procedure. Front cabinet Control (1) board Control (2) board Headphone board Upper cabinet Optical pick-up Main board BATT board Mechanism deck REC SW board Power board Primary board Note : Follow the disassembly procedure in the numerical order given.
  • Page 6: Optical Pick-Up

    3-3. OPTICAL PICK-UP 4 Remove solder CD Motor board Optical pick-up section 3 Wire (Flat type) (16 core) to MAIN board (CNP701) 2 CNP702 (6pin) 3-4. MECHANISM DECK, REC SW BOARD, MAIN BOARD, POWER BOARD, BATT BOARD, PRIMARY BOARD 1 Three screws +BVTP 3 × 10 2 Mechanism deck 3 Two screws +BVTP 3 ×...
  • Page 7: Adjustments

    SECTION 4 ADJUSTMENTS 0dB = 0.775V 4-1. MECHANICAL ADJUSTMENT 4-2. ELECTRICAL ADJUSTMENT PRECAUTION TAPE RECODER SECTION Clean the following parts with a denatured-alchool-moistened swab: Standard output level record/playback head pinch roller Output Pin HP OUT erase head rubber belts 32 Ω capstans Load impedance Demagnetize the record/playback head with a head...
  • Page 8: Tuner Section

    4-3. TUNER SECTION 0 dB = 1 µV • Repeat the procedures in each adjustment several times for the • Switch Location maximum level meter indication. • The frequency coverage and tracking adjustments should be VOLUME : MAX finally done by the trimmer capacitors. MEGA BASS : OFF TONE : OFF...
  • Page 9 FM VCO Adjustment Procedure : FM RF SSG BLACK 10.64MHz color BLUE 10.67MHz mark 0.01 µ F 10.70MHz telescpic ORANGE 10.73MHz antenna input(ANT1) WHITE 10.76MHz Carrier frequency : 98MHz IF frequency : According to the color of CF1. Modulation : no modulation Output level : 0.1V (100dB) 1.
  • Page 10 E-F Balance Check CD SECTION Adjustment Location : MAIN board Notes on Check This check is to be done when the optical pick-up block is replaced. Perform the traverse check in the CD test mode. After check, be sure to exit the test mode. Check Procedure: Perform check in the order given.
  • Page 11: Reference

    Focus Bias Check 4-4. REFERENCE Adjustment Location : MAIN board (Component side) Focus/Tracking Gain Check Adjustment Location : MAIN board (Component side) This check is to be done when the optical block replaced. (See page 12) Check Procedure: A frequency response analyzer is necessary in order to perform this 1.
  • Page 12 • Good Example • Incorrect Examples (Fundamental wave appears) VOLT/DIV : 100mV VOLT/DIV : 1V TIME/DIV : 1ms TIME/DIV : 2ms 100mV low tracking gain • Incorrent Examples (DC level changes more than on adjusted VOLT/DIV : 1V waveform) TIME/DIV : 2ms VOLT/DIV : 100mV TIME/DIV : 2ms 200mV...
  • Page 13: Diagrams

    SECTION 5 DIAGRAMS 5-1. CIRCUIT BOARDS LOCATION REC SW board BATT board PRIMARY board VOL SEL board CONTROL (1) board RMC board CD MOTOR board MAIN board HEADPHONE board CONTROL (2) board POWER board LED board — 13 —...
  • Page 14: Ic Pin Function

    5-2. IC PIN FUNCTION IC501 CXP83416A-602Q Pin No. Pin Name Description C-SCOR SCOR input to CD Remote control signal input C-XRST Reset output to CD system B-MUTE CD block mute ON/OFF ROCK Not used Not used C-SQCK Clock for reading CD SUBQ C-SQSO CD SUBQ data input Input from TAPE REC switch...
  • Page 15: Block Diagram

    CFD-V37 5-3. BLOCK DIAGRAM Pin No. Pin Name Description FM IF COM3 LCD common output port ANT1 SEG0  FM VCO IC302  TELESCOPIC ANTENNA SOUND/VOLUME SEG1  L1, CT1(1/4)  SEG2 FM TRACKING  L2, CT1(2/4) IC301  FM/AM...
  • Page 16: Printed Wiring Board

    CFD-V37 5-4. PRINTED WIRING BOARD • Refer to page 13 for Circuit Boards Location. • Semiconductor Location Ref. No. Location J-22 J-23 D351 D501 H-14 D502 H-14 D503 H-15 D504 G-15 D506 E-17 D507 E-17 D508 E-17 D509 D-17 D511...
  • Page 17: Schematic Diagram - Tuner/System Section

    CFD-V37 5-5. SCHEMATIC DIAGRAM — TUNER/SYSTEM SECTION — • Refer to page 34 for IC Block Diagrams. E4,EA MODEL:4.7p E92 MODEL:3.3K L1,CT1(1/4) L2, CT1(2/4) L4,CT1(4/4) E92 MODEL FM TRACKING FM FREQUENCY FM FREQUENCY COVERAGE COVERAGE C1 47p E4,EA MODEL L3,CT1(3/4) AM TRACKING •...
  • Page 18: Schematic Diagram - Power Section

    CFD-V37 5-6. SCHEMATIC DIAGRAM — POWER SECTION — • Waveform 10V/div T301 REC 10µsec/div 40Vp-p 52.75kHz Note: E4,EA MODEL • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
  • Page 19: Schematic Diagram - Cd Section

    CFD-V37 5-7. SCHEMATIC DIAGRAM — CD SECTION — • Refer to page 34 for IC Block Diagrams. 5-8. IC BLOCK DIAGRAMS CXA12138S 28 27 26 25 24 23 22 21 FM FRONT-END AM FRONT-END FM IF/ MPX REG. DISCRI COUNTER...
  • Page 24: Mechanism Deck Setion (1) (Mf-V10-117)

    6-5. MECHANISM DECK SECTION (2) (MF-V10-117) S801 S802 M301 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 3-933-029-01 LEVER, ERASING PREVENTION X-3372-924-1 FLYWHEEL ASSY 3-933-182-01 SPRING, CASSETTE 3-932-993-01 CHASSIS, OUTSERT 3-932-995-01 GEAR (MID) 3-343-358-01 RING, RETAINING X-3371-667-1 CLUTCH ASSY 3-933-005-01 SPRING (CAM), COMPRESSION 3-932-997-01 GEAR (CAM)
  • Page 25: Optical Pick-Up Section (Ksm-213Cdm)

    6-6. OPTICAL PICK-UP SECTION (KSM-213CDM) not supplied M702 M701 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 2-626-908-01 SHAFT, SLED ! 254 8-848-483-05 KSS-213CDM 2-627-003-02 GEAR (B) (RP) X-2626-202-1 CHASSIS ASSY (MB) (RP), MOTOR 2-626-907-01 GEAR (A) (INCLUDING M702) (SPINDLE) M701 X-2625-769-1 GEAR ASSY (MB) (RP), MOTOR (SLED)
  • Page 26: Electrical Parts List

    BATT CD MOTOR SECTION 7 CONTROL (1) CONTROL (2) ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name.
  • Page 27 HEADPHONE MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-668-345-11 HEADPHONE BOARD 1-162-306-11 CERAMIC 0.01uF 1-126-963-11 ELECT 4.7uF *************** 1-124-903-11 ELECT < CONNECTOR > 1-104-664-11 ELECT 47uF 1-104-664-11 ELECT 47uF CNP316 1-506-986-11 PIN, CONNECTOR (PC BOARD) 4P 1-162-306-11 CERAMIC 0.01uF <...
  • Page 28 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C514 1-162-306-11 CERAMIC 0.01uF C724 1-130-489-00 MYLAR 0.033uF C515 1-162-306-11 CERAMIC 0.01uF C724 1-130-489-00 MYLAR 0.033uF C516 1-162-306-11 CERAMIC 0.01uF C725 1-130-486-00 MYLAR 0.018uF C517 1-162-291-31 CERAMIC 560PF C725 1-137-440-11 FILM...
  • Page 29 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < FILTER > < HOLDER > 1-760-738-61 FILTER, CERAMIC * KH504 1-573-287-11 HOLDER, CABLE 2P 1-577-072-11 FILTER, CERAMIC < COIL > < CONNECTOR > 1-406-999-11 COIL, AIR-CORE (EA) CNP301 1-506-986-11 PIN, CONNECTOR (PC BOARD) 4P 1-406-998-11 COIL, AIR-CORE (E4,E92)
  • Page 30 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R205 1-249-417-11 CARBON 1/4W F R575 1-249-425-11 CARBON 4.7K 1/4W F R210 1-249-417-11 CARBON 1/4W F R576 1-249-425-11 CARBON 4.7K 1/4W F R211 1-249-429-11 CARBON 1/4W R577 1-249-421-11 CARBON 2.2K 1/4W F...
  • Page 31 MAIN POWER Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R765 1-249-417-11 CARBON 1/4W F C286 1-162-282-31 CERAMIC 100PF R766 1-249-429-11 CARBON 1/4W C333 1-104-664-11 ELECT 47uF R768 1-247-903-00 CARBON 1/4W C334 1-126-961-11 ELECT 2.2uF R771 1-249-429-11 CARBON 1/4W C335...
  • Page 32 POWER PRIMARY REC SW VOL SEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < RESISTOR > D906 8-719-991-33 DIODE 1SS133T-77 D907 8-719-991-33 DIODE 1SS133T-77 R140 1-249-425-11 CARBON 4.7K 1/4W F D908 8-719-991-33 DIODE 1SS133T-77 R145 1-249-425-11 CARBON 4.7K 1/4W F...
  • Page 33 CFD-V37 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MISCELLANEOUS ************** 1-452-899-11 MAGNET 1-777-955-11 WIRE (FLAT TYPE) (16 CORE) ! 254 8-848-483-05 OPTICAL PICK-UP BLOCK KSS-213/C/Q-RP ANT1 1-501-883-21 ANTENNA, TELESCOPIC ! F901 1-532-467-31 FUSE,TIME LAG 0.315A/250V (E4,EA) ! F902 1-532-464-31 FUSE,TIME LAG 2.5A/250V...

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