Sony CFD-ZW755 Service Manual
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Sony CFD-ZW755 Service Manual

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SERVICE MANUAL
Ver 1.2 2004.08
With SUPPLEMENT-1
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 3.2-ohm loads, both channel driven from 150 - 6,300 Hz; rated 1.6
W per channel-minimum RMS power, with no more than
10 % total harmonic distortion in AC operation.
Other Specifications
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 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/–1 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM: 87.5 - 108 MHz
AM:530 - 1,710 kHz
Antennas
FM: Telescopic antenna
AM: Built-in ferrite bar antenna
Sony Corporation
9-927-694-13
Personal Audio Company
2004H02-1
Published by Sony Engineering Corporation
© 2004.08
CFD-ZW755
Model Name Using Similar Mechanism
CD
CD Machanism Type
Section
Optical Pick-up Type
Model Name Using Similar Machanism
TC
Section
Tape Transport Mechanism Type
SPECIFICATIONS
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal): 80 - 10,000 Hz
General
Speaker
Full range: 10 cm (4 in.) dia.,
3.2 ohms, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones
Power requirements
For CD radio cassette-corder:
120 V AC, 60 Hz
9 V DC, 6 size D (R20) batteries
For memory back-up:
4.5 V DC, 3 size AA (R6) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries
CD RADIO CASSETTE-CORDER
US Model
CFD-ZW750/ZW770
KSM-213CDM
KSS-213C
NEW
MF-ZW755-117
– Continued on page 2 –

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  • Page 1 4-track 2 channel stereo W per channel-minimum RMS power, with no more than Fast winding time 10 % total harmonic distortion in AC operation. Approx. 120 s (sec.) with Sony cassette C-60 Frequency response Other Specifications TYPE I (normal): 80 - 10,000 Hz...

  • Page 2: Table Of Contents

    LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE pick-up block. Therefore, when checking the laser diode PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN emission, observe more than 30 cm away from the objective SUPPLEMENTS PUBLISHED BY SONY.

  • Page 3: Servicing Notes

    SECTION 1 SERVICING NOTES SAFETY CHECK-OUT CHUCK PLATE JIG ON REPAIRING On repairing CD section, playing a disc without the CD lid, use After correcting the original service problem, perform the Chuck Plate Jig. following safety check before releasing the set to the customer : •...

  • Page 4: General

    SECTION 2 This section is extracted from GENERAL instruction manual. Basic Operations Playing a CD Use these buttons for additional operations POWER 6 PUSH OPEN/CLOSE VOLUME PRESET TIME SET Do this With the label side up Display Track number Playing time Basic Operations Basic Operations Listening to the radio...

  • Page 5: Playing A Tape

    Playing a tape Use these buttons for additional operations POWER VOLUME Note Do this With the side you want to play facing you Display Basic Operations Basic Operations Recording on a tape Deck B Deck A Tips Use these buttons for additional operations POWER MODE With the side you want to...

  • Page 6: Disassembly

    SECTION 3 DISASSEMBLY The equipment can be removed using the following procedure. Cabinet (Rear) Power board, Back up board, Battery board Cabinet (Front) CD block ASSY Control board Power key board, Mega bass board, sub ASSY Preset board, Volume board Key board Headphone board Main board...

  • Page 7: Cd Block Assy

    3-3. CD BLOCK ASSY 1 Screws (BVTP 3x12) 1 Screws (BVTP 3x12) 2 CN310 CD block ASSY 2 CN306 2 CN305 3 To S901 (CD door open/close) 2 Wire, parallel (23 core) (CN308) 2 CN311 Cabinet (front) sub ASSY 2 CN303 3-4.

  • Page 8: Power Key Board, Mega Bass Board, Preset Board, Volume Board

    3-5. POWER KEY BOARD, MEGA BASS BOARD, PRESET BOARD, VOLUME BOARD 1 Screws (BVTP 2.6x8) Power key board qs Screw 7 Screw (BVTP 2.6x8) (BVTP 2.6x8) 3 Screws (BVTP 2.6x8) Preset board Cabinet (front) sub ASSY Mega bass board 8 Claws Volume board 6 Nut and washer qd Claws...

  • Page 9: Rec Sw Board, Pb Board

    3-8. REC SW BOARD, PB BOARD 6 Screw 5 Remove solder (BVTP 3x10) PB board 3 Screw (BVTP 3x10) 1 CN304 Shield REC SW board 2 Remove solder Cabinet (front) sub ASSY Shield 3-9. MECHANISM DECK 1 Screws (BVTP 3x10) Mechanism deck Cabinet (front) sub ASSY –...

  • Page 10: Capstan/Reel Motor (M301), Belt

    3-10. CAPSTAN/REEL MOTOR (M301), BELT 1 Screws (+PTT 2x5) Chassis (sub) 5 Capstan/reel motor (M301) 3 Belt 1 Screws (+PTT 2x5) 4 Screws (M2.6x2.5) DECK ASSY, A 3 Belt 1 Screw (+PTT 2x5) DECK ASSY, B 3-11. MAIN BOARD 2 Screws (BVTP 3x10) 2 Screws (BVTP 3x10) Main board CD board...

  • Page 11: Cd Board

    3-12. CD BOARD 3 Screws (BVTP 3x10) 3 Screws (BVTP 3x10) CD board 1 Wire, parallel (16 core) (CN701) 2 CN702 CD block ASSY 3-13. OPTICAL PICK-UP BLOCK 1 Screws (+PWH 2.6x10) 1 Screws (+PWH 2.6x10) Optical pick-up block Chassis, CD –...

  • Page 12: Adjustments

    SECTION 4 ADJUSTMENTS 4-1. MECHANICAL ADJUSTMENTS 4-2. ELECTRICAL ADJUSTMENTS PRECAUTION TAPE SECTION 0 dB = 0.775V 1. Clean the following parts with a denatured-alcohol-moistened Standard Output level swab : Outout terminal SP OUT PHONES OUT record/playback head pinch roller load impedance erase head rubber belt capstan...
  • Page 13 • Repeat the procedures in each adjustment several times, and the TUNER SECTION 0 dB = 1 V frequency coverage and tracking adjustments should be finally • FM Section done by the trimmer capacitors. Setting : AM IF ADJUSTMENT RADIO BAND button : FM Adjust for a maximum reading on level meter.
  • Page 14 Adjustment Location : [MAIN BOARD] (Component side) L3 : AM Tracking Adjustment CT2 : AM Tracking Adjustment L4 : AM Frequency Coverage Adjustment VT (JW13) JW13 FM Tracking Adjustment L2 : FM Frequency Coverage Adjustment T2 : FM IF Adjustment T1 : AM IF Adjustment CD SECTION CD section adjustments are done automatically in this set.

  • Page 15: Diagrams

    SECTION 5 DIAGRAMS 5-1. EXPLANATION OF IC TERMINALS IC801 CXP83516-606Q (SYSTEM CONTROL) Pin No. Pin name Description C-SCOR/R-CNT CD SCOR input. Sircs receiver input. CD function output. C-MUT CD block mute output. C-SEN1 CD SENSE-1 input. C-SEN2 CD SENSE-2 input. C-SQCK CD Sub-Q read clock output.
  • Page 16 Circuit Boards Location CD MOTOR board CD board KEY board MAIN board CONTROL board POWER board BATTERY board POWER KEY board HEADPHONE board PRESET board BACK UP board PB board VOLUME board MEGA BASS board REC SW board – 16 –...

  • Page 17: Block Diagrams

    CFD-ZW755 5-2. BLOCK DIAGRAMS • Signal path. : FM : AM : PB (DECK B) : REC (DECK B) : PB (DECK A) : CD – 17 – – 18 – – 19 – – 20 –...

  • Page 18: Schematic Diagram (Main Section)

    CFD-ZW755 5-3. SCHEMATIC DIAGRAM (MAIN SECTION) Refer to page 40 – 41 for IC Block Diagrams. Waveforms (MAIN SECTION) 247mVp-p 75kHz IC2 wa VOLT/DIV : 0.1 V AC (X-OUT) TIME/DIV : 20 sec 31.4Vp-p 19.45 sec : 1/10 VOLT/DIV : 1 V AC...

  • Page 19: Printed Wiring Boards (Main Section)

    CFD-ZW755 5-4. PRINTED WIRING BOARDS (MAIN SECTION) Refer to page 16 Circuit Boards Location. Semiconductor Location Ref. No. Location Ref. No. Location CONTROL BOARD CONTROL BOARD CNJ801 CN803 [MAIN BOARD] (Page 30) (Page 29) [REC SW BOARD] Q101 Q102 [PB BOARD]...

  • Page 20: Printed Wiring Boards (Control Section)

    CFD-ZW755 5-5. PRINTED WIRING BOARDS (CONTROL SECTION) Refer to page 16 Circuit Boards Location. Semiconductor Location Ref. No. Location CD BOARD MAIN BOARD D801 CN308 CN703 D802 (Page 36) (Page 25) [PRESET BOARD] IC801 [CONTROL BOARD] [VOLOME BOARD] IC802 IC803...

  • Page 21: Schematic Diagram (Control Section)

    CFD-ZW755 5-6. SCHEMATIC DIAGRAM (CONTROL SECTION) Refer to page 30 for Notes. Refer to page 30 for Waveforms. – 31 – – 32 – – 33 –...

  • Page 22: Printed Wiring Boards (Cd Section)

    CFD-ZW755 5-7. PRINTED WIRING BOARDS (CD SECTION) Refer to page 16 Circuit Boards Location. Semiconductor Location Ref. No. Location MAIN BOARD D701 D702 CNJ307 D703 (Page 25) [CD BOARD] IC701 IC702 IC703 [CD MOTOR BOARD] Q701 JW746 JW747 JW727 JW748...

  • Page 23: Schematic Diagram (Cd Section)

    CFD-ZW755 5-8. SCHEMATIC DIAGRAM (CD SECTION) Refer to page 42 – 43 for IC Block Diagrams. Waveforms (CD SECTION) (PLAY MODE) 0.9 – 1.5Vp-p IC701 ed VOLT/DIV : 0.5 V AC (RFO) TIME/DIV : 1 sec (PLAY MODE) 0.6Vp-p IC701 6...
  • Page 24 IC Block Diagrams (MAIN SECTION) IC Block Diagrams (CD SECTION) IC701 CXA1992BR IC1 TA2149N IC301 TA2068N GND1 FM RF OUT FM RF VCC1 FM RF IN AM RF OUT LOGIC AM LOW CUT PD2 IV MONITOR MONITOR PD1 IV SUMMING MIX OUT FM OSC F.
  • Page 25 IC703 CXD2589Q 59 58 57 54 53 52 51 50 SYSM SERIAL-IN INTERFACE LRCKI LRCK AVSS ASYO OVER SAMPLING DIGITAL FILTER ASYI ASYMMETRY AVDD DEMODULATOR CORRECTOR BIAS 3rd-ORDER AOUT1 NOISE SHAPER AIN1 AVDD LOUT1 AVSS CLTV XVDD TIMING ERROR XTAI LOGIC CORRECTOR AVSS...

  • Page 26: Exploded Views

    SECTION 6 EXPLODED VIEWS NOTE : • -XX, -X mean standardized parts, so they • The mechanical parts with no reference The components identified by mark 0 may have some difference from the original number in the exploded views are not or dotted line with mark 0 are critical one.

  • Page 27: Front Cabinet Section

    6-2. FRONT CABINET SECTION LCD801 not supplied 64 65 not supplied 68 69 70 71 Supplied with VR801 Supplied with VR802 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3378-796-1 CABINET (FRONT) SUB ASSY 3-031-155-02 KNOB(2), PAUSE 3-033-111-01 HOLDER (B), CASSETTE 3-031-168-01 SPRING, CASSETTE 3-922-112-21 DAMPER...

  • Page 28: Cd Section

    Ver 1.2 6-3. CD SECTION not supplied S901 KSM-213CDM Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 A-3322-589-A MAIN BOARD,COMPLETE 3-911-135-01 SCREW (2.6X10), (+PWH) TAPPING * 102 A-3322-588-A CD BOARD,COMPLETE * 112 1-790-242-11 WIRE, PARALLEL (FFC) (16 CORE) 3-049-782-01 DAMPER 1-639-678-12 CD MOTOR BOARD 3-031-136-11 LID, CD...

  • Page 29: Tape Mechanism Section-1 (Mf-Zw755-117)

    6-4. TAPE MECHANISM SECTION-1 (MF-ZW755-117) M301 not supplied DECK ASSY, A DECK ASSY, B Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-025-846-01 LEVER (REC) M301 A-3328-913-A MOTOR ASSY (W) (CAPSTAN/REEL) 3-016-031-11 BELT (INCLUDING PULLEY) 3-343-251-01 SCREW (M2.6X2.5) –...

  • Page 30: Tape Mechanism Section-2 (Deck A) (Mf-Zw755-117)

    6-5. TAPE MECHANISM SECTION-2 (DECK A) (MF-ZW755-117) HP301 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-010-01 SPRING (S/P), TORSION * 213 3-008-591-01 SLIDER (PAUSE) 3-933-025-01 SPRING (P), TORSION 3-933-004-01 CLAW, REEL 3-040-857-01 LEVER (P) * 215 3-933-021-01 SLIDER (FRP) 3-933-024-01 ROLLER, PINCH 3-933-019-01 SPRING (F/R), TORSION...

  • Page 31: Tape Mechanism Section-3 (Deck A) (Mf-Zw755-117)

    6-6. TAPE MECHANISM SECTION-3 (DECK A) (MF-ZW755-117) S304 S305 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-182-01 SPRING, CASSETTE X-3373-572-1 REEL ASSY (N), T 3-932-995-01 GEAR (MID) X-3374-077-1 FLYWHEEL ASSY (W) X-3371-667-1 CLUTCH ASSY 3-932-993-01 CHASSIS, OUTSERT 3-932-997-01 GEAR (CAM) 3-343-358-01 RING, RETAINING * 255...

  • Page 32: Tape Mechanism Section-4 (Deck B) (Mf-Zw755-117)

    6-7. TAPE MECHANISM SECTION-4 (DECK B) (MF-ZW755-117) HRP301 HE301 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-010-01 SPRING (S/P), TORSION * 312 3-008-587-01 SLIDER (STOP) 3-933-025-01 SPRING (P), TORSION * 313 3-008-591-01 SLIDER (PAUSE) 3-040-857-01 LEVER (P) 3-933-004-01 CLAW, REEL 3-933-024-01 ROLLER, PINCH * 315...

  • Page 33: Tape Mechanism Section-5 (Deck B) (Mf-Zw755-117)

    6-8. TAPE MECHANISM SECTION-5 (DECK B) (MF-ZW755-117) S307 S306 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-029-01 LEVER, ERASING PREVENTION X-3373-572-1 REEL ASSY (N), T 3-933-182-01 SPRING, CASSETTE X-3374-077-1 FLYWHEEL ASSY (W) 3-932-995-01 GEAR (MID) 3-932-993-01 CHASSIS, OUTSERT X-3371-667-1 CLUTCH ASSY 3-343-358-01 RING, RETAINING...

  • Page 34: Optical Pick-Up Section (Ksm-213Cdm)

    6-9. OPTICAL PICK-UP SECTION (KSM-213CDM) not supplied (INCLUDING M701) M701 M702 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No.

  • Page 35: Speaker Section

    6-10. SPEAKER SECTION not supplied SP901 (L-CH), SP902 (R-CH) supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3377-577-1 FRAME ASSY, NET 3-031-177-01 CABINET (REAR) (R), SPEAKER 3-031-182-11 RUBBER 3-033-107-01 CABINET (FRONT), SPEAKER SP901 1-529-245-11 SPEAKER (10cm) (L-CH) 3-031-176-01 CABINET (REAR) (L), SPEAKER SP902 1-529-245-11 SPEAKER (10cm) (R-CH)

  • Page 36: Electrical Parts List

    SECTION 7 BACK UP BATT ELECTRICAL PARTS LIST NOTE : • Due to standardization, replacements in the • SEMICONDUCTORS The components identified by mark 0 parts list may be different from the parts In each case, u : , for example : or dotted line with mark 0 are critical specified in the diagrams or the components uA..
  • Page 37 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C776 1-162-294-31 CERAMIC 1000PF R719 1-249-393-11 CARBON 1/4W C780 1-162-284-31 CERAMIC 150PF R720 1-249-430-11 CARBON 1/4W C781 1-162-292-31 CERAMIC 680PF R721 1-247-862-11 CARBON 1/4W C782 1-126-963-11 ELECT 4.7uF R722 1-247-886-11 CARBON 200K...
  • Page 38 CD MOTOR CONTROL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-639-678-12 CD MOTOR BOARD < DIODE > *************** D801 8-719-991-33 DIODE 1SS133T-77 < CONNECTOR > D802 8-719-059-97 LED L-34HD (OPR/BATT) CNP707 1-564-722-11 PIN, CONNECTOR (SMALL TYPE) 6P <...
  • Page 39 CONTROL HEADPHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R837 1-249-425-11 CARBON 4.7K 1/4W 1-677-744-11 HEADPHONE BOARD R838 1-249-425-11 CARBON 4.7K 1/4W ***************** R839 1-249-441-11 CARBON 100K 1/4W R840 1-249-441-11 CARBON 100K 1/4W < JACK > R841 1-247-872-11 CARBON 1/4W...
  • Page 40 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-126-959-11 ELECT 0.47uF C226 1-104-664-11 ELECT 47uF 1-127-888-21 CERAMIC 0.1uF C227 1-162-282-31 CERAMIC 100PF 1-162-215-31 CERAMIC 47PF 1-161-494-00 CERAMIC 0.022uF C232 1-130-485-00 MYLAR 0.015uF 1-127-888-21 CERAMIC 0.1uF C235 1-104-665-11 ELECT 100uF...
  • Page 41 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRIMMER > < TRANSISTOR > 1-141-605-11 CAP, ADJ (FM TRACKING) 8-729-036-77 TRANSISTOR KRC107M 1-141-601-11 CAP, ADJ (AM TRACKING) Q101 8-729-036-80 TRANSISTOR KRC110M Q102 8-729-036-89 TRANSISTOR KTC3198GR-AT <...
  • Page 42 MAIN MEGA BASS PB Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R110 1-249-409-21 CARBON 1/4W R380 1-249-417-11 CARBON 1/4W R114 1-249-431-11 CARBON 1/4W R381 1-249-437-11 CARBON 1/4W R115 1-249-425-11 CARBON 4.7K 1/4W R116 1-249-385-11 CARBON 1/6W R382 1-249-429-11 CARBON...
  • Page 43 POWER POWER KEY PRESET REC SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > 1-677-751-11 POWER KEY BOARD ***************** R121 1-247-815-91 CARBON 1/4W R122 1-249-439-11 CARBON 1/4W < SWITCH > R123 1-249-403-11 CARBON 1/4W R124 1-247-883-00 CARBON...
  • Page 44 CFD-ZW755 REC SW VOLUME Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > MISCELLANEOUS ************** D301 8-719-991-33 DIODE 1SS133T-77 1-533-233-31 HOLDER, FUSE < IC > 1-792-553-11 WIRE, PARALLEL (23 CORE) 1-790-241-11 WIRE, PARALLEL (FFC) (10 CORE)
  • Page 45 CFD-ZW755 US Model SERVICE MANUAL 2002.06 SUPPLEMENT - 1 File this Supplement with the Service Manual. Subject : CHANGE OF CD MECHANISM (SPM-02027) CD mechanism changed to KSM-213RDM from KSM-213CDM after serial No.0560201. Please check serial No. when you exchange the parts of CD mechanism.
  • Page 46 CFD-ZW755 OPTICAL PICK-UP SECTION (KSM-213RDM) M701 M702 (including M701) The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No.
  • Page 47 CFD-ZW755 Printing Method for Large Sized Documents Such As Circuit Diagrams Printing the page that exceeds A4-size two pages (or letter size) is possible by specifying the print range. (Acrobat Reader Version 4.0 or later) 1. The enlarged print is made, if a smaller range than A4 size is specified and the A4 size is selected as a print paper.
  • Page 48 CFD-ZW755 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2000.03...

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