Sony-CDFZW755-cs-sm 电路图 维修手册.pdf

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1、Ver 1.0 2000.03 CFD-ZW755 SERVICE MANUAL CD RADIO CASSETTE-CORDER SPECIFICATIONS US Model CD Model Name Using Similar MechanismCFD-ZW750/ZW770 CD Machanism TypeKSM-213CDM Section Optical Pick-up TypeKSS-213C TC Model Name Using Similar MachanismNEW Section Tape Transport Mechanism TypeMF-ZW755-117 A

2、UDIO 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 di

3、gital audio system Laser diode properties Material: GaAlAs Wave length: 780 nm Emission duration: Continuous Laser output: Less than 44.6 W (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

4、 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 Cassette-corder section

5、 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 he

6、adphones 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 Continued on page 2 RadioFans.CN 收音机爱 好者资料库 2 SAFETY-RELATED COMPONENT WARNING! COMPO

7、NENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. TABLE OF CONTENTS Specifications . 1 1

8、.SERVICING NOTES. 3 2.GENERAL. 4 3.DISASSEMBLY 3-1. Cabinet (Rear) . 6 3-2. Power Board, Back up Board, Battery Board. 6 3-3. CD Block ASSY . 7 3-4. Control Board . 7 3-5. Power Key Board, Mega Bass Board, Preset Board, Volume Board . 8 3-6. Key Board. 8 3-7. Headphone Board . 8 3-8. REC SW Board, P

9、B Board . 9 3-9. Mechanism Deck . 9 3-10. Capstan/reel Motor (M301), Belt . 10 3-11. Main Board. 10 3-12. CD Board.11 3-13. Optical pick-up Block .11 4.ADJUSTMENTS 4-1. Mechanical Adjustments. 12 4-2. Electrical Adjustments. 12 5.DIAGRAMS 5-1. Explanation of IC Terminals. 15 5-2. Block Diagrams . 17

10、 5-3. Schematic Diagram (Main Section) . 21 5-4. Printed Wiring Boards (Main Section) . 25 5-5. Printed Wiring Boards (Control Section) . 28 5-6. Schematic Diagram (Control Section). 31 5-7. Printed Wiring Boards (CD Section) . 34 5-8. Schematic Diagram (CD Section) . 37 6.EXPLODED VIEWS 6-1. Rear C

11、abinet Section. 44 6-2. Front Cabinet Section. 45 6-3. CD Section . 46 6-4. Tape Mechanism Section-1 (MF-ZW755-117). 47 6-5. Tape Mechanism Section-2 (DECK A) (MF-ZW755-117) . 48 6-6. Tape Mechanism Section-3 (DECK A) (MF-ZW755-117) . 49 6-7. Tape Mechanism Section-4 (DECK B) (MF-ZW755-117) . 50 6-8

12、. Tape Mechanism Section-5 (DECK B) (MF-ZW755-117) . 51 6-9. Optical pick-up Section (KSM-213CDM) . 52 6-10.Speaker Section. 53 7.ELECTRICAL PARTS LIST. 54 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure

13、. Power consumption AC 15 W Battery life For CD radio cassette-corder: FM recording Sony R20P:approx. 7.5 h Sony alkaline LR20:approx. 22 h Tape playback Sony R20P:approx. 7 h Sony alkaline LR20:approx. 20 h CD playback Sony R20P:approx. 3 h Sony alkaline LR20:approx. 10 h For memory back-up: approx

14、. 1 year Dimensions Approx. 650 x 265 x 256 mm (w/h/d) (25 58 x 10 12 x 10 18 inches) (incl. projecting parts) Mass Approx. 6.7 kg (14 lb. 12 oz) (incl. batteries) Supplied accessory AC power cord (1) Remote control (1) Design and specifications are subject to change without notice. NOTES ON HANDLIN

15、G THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- static breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown and

16、 also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the object

17、ive lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe more than 30 cm away from the objective lens. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C during repairing. Do not touch the soldering iron on the same conduc

18、tor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. RadioFans.CN 收音机爱 好者资料库

19、 3 CHUCK PLATE JIG ON REPAIRING On repairing CD section, playing a disc without the CD lid, use Chuck Plate Jig. Code number of Chuck Plate Jig : X-4918-255-1 SECTION 1 SERVICING NOTES LASER DIODE AND FOCUS SEARCH OPERATION CHECK 1.Turn on POWER button and press CD button to CD position. 2.Open the

20、CD lid. 3.Turn on S901 as following figure. 4.Confirm the laser diode emission while observing the objecting lens. When there is no emission, Auto Power Control circuit or Optical Pick-up is broken. Objective lens moves up and down three for focus search. SAFETY CHECK-OUT After correcting the origin

21、al service problem, perform the following safety check before releasing the set to the customer : Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST The AC leakage from any exposed meta

22、l part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5mA (500 microampers). Leakage current can be measured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manuf

23、acturers instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75V, so analog me

24、ters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) AC voltmeter (0.75V) To Exposed Metal Parts on Set Earth Ground 0.15 F 1

25、.5k Fig. A. Using an AC voltmeter to check AC leakage. Insert a precision screw driver and push SWITCH (S901) RadioFans.CN 收音机爱 好者资料库 4 SECTION 2 GENERAL This section is extracted from instruction manual. Basic Operations4 Playing a CD Basic Operations Track number Playing time 3 With the label side

26、 up Display For hookup instructions, see pages 26 28. 1Push 6 PUSH OPEN/CLOSE down to open the CD compartment and place the CD on the CD compartment. 2Close the lid of the CD compartment. 3Press . The player turns on (direct power-on) and plays all the tracks once. 1,2 Basic Operations Basic Operati

27、ons 5 Use these buttons for additional operations Tip Next time you want to listen to a CD, just press . The player turns on automatically and starts playing the CD. ToDo this adjust the volumeTurn VOLUME (Press VOL +, on the remote). stop playbackPress p. pause playbackPress ( P on the remote). Pre

28、ss the button again to resume play after pause. go to the next trackTurn PRESETTIME SET clockwise (Press + on the remote). go back to the previous trackTurn PRESETTIME SET counterclockwise (Press =on the remote). remove the CDPress 6 PUSH OPEN/ CLOSE. turn on/off the playerPress POWER. POWER6 PUSH O

29、PEN/CLOSE VOLUME p PRESET TIME SET Basic Operations6 Listening to the radio For hookup instructions, see pages 26 28. 1Press RADIO BAND until the band you want appears in the display (direct power-on). Each time you press the button, the indication changes as follows: FM1 n FM2 n AM. 2Hold down TUNE

30、 + or until the frequency digits begin to change in the display. The player automatically scans the radio frequencies and stops when it finds a clear station. If you cannot tune in to a station, press the button repeatedly to change the frequency step by step. Display 21 Indicates an FM stereo broad

31、cast Basic Operations Basic Operations 7 Use these buttons for additional operations Tips The FM1 and FM2 bands have the same functions. You can store the stations you want separately in FM1 and FM2. If the FM broadcast is noisy, press MODE until “Mono” appears in the display and radio will play in

32、monaural. Next time you want to listen to the radio, just press RADIO BAND. The player turns on automatically and starts playing the previous station. ToDo this adjust the volumeTurn VOLUME (Press VOL +, on the remote). turn on/off the radioPress POWER. To improve broadcast reception Reorient the an

33、tenna for FM. Reorient the player itself for AM. for FMfor AM VOLUME POWERMODE 5 Basic Operations8 Playing a tape For hookup instructions, see pages 26 28. 1Press p6 to open the tape compartment and insert a recorded tape. Use TYPE I (normal) tape only. Close the compartment. 2Press (. The player tu

34、rns on ( direct power-on) and starts playing. With the side you want to play facing you 1212 Display Basic Operations Basic Operations 9 Use these buttons for additional operations ToDo this adjust the volumeTurn VOLUME (Press VOL +, on the remote). stop playbackPress p6. fast-forward or rewind the

35、tapePress ) or 0. pause playbackPress P. Press the button again to resume play after pause. eject the cassettePress p6. turn on/off the playerPress POWER. Note During playback, do not press buttons on the other deck. Otherwise the playback speed may change. Tip Next time you want to listen to a tape

36、, just press (. The player turns on automatically and starts playing the tape. POWER VOLUME 0, ) 0, ) p6 P p6 P Basic Operations10 Recording on a tape For hookup instructions, see pages 26 28. 1Press p6 to open the tape compartment on deck B and insert a blank tape. Use TYPE I (normal) tape only. 2S

37、elect the program source you want to record. To record from the CD player: insert a CD (see page 4) and press CD. To record from the radio: tune in the station you want (see page 6). To record from the tape (dubbing): insert a recorded tape into deck A and press TAPE until “dUb” appears in the displ

38、ay. Display With the side you want to record on facing you 312 Basic Operations Basic Operations 11 3Start recording. To record from the CD player and the radio, press r on deck B ( is depressed automatically). To record from the tape, press r on deck B (is depressed automatically). Then press ( on

39、deck A. Deck B ToPress stop recordingp6 on deck B pause recordingP on deck B Press the button again to resume recording. turn on/off the playerPOWER Use these buttons for additional operations Tips Adjusting the volume or the audio emphasis (see page 25) will not affect the recording level. For the

40、best results, use the AC power as a power source. If the AM program makes a whistling sound after youve pressed r in step 3, press MODE repeatedly until the noise at a minimum. POWER p6 P To erase a recording, proceed as follows: 1Insert a tape whose recording you want to erase intodeck B. 2Press TA

41、PE untill “TAPE” appears in the display. 3Press r on deck B. Deck A MODE 6 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. CABINET (REAR) 3-2. POWER BOARD, BACK UP BOARD, BATTERY BOARD z The equipment can be removed using the following procedure. Cabi

42、net (Front) sub ASSY Power board, Back up board, Battery board Cabinet (Rear) Set CD block ASSYPower key board, Mega bass board, Preset board, Volume board Key board Control board Headphone board Main boardCD boardOptical pick-up block REC SW board, PB boardMechanism deckCapstan/reel motor (M301), B

43、elt 2 Screws (BVTP 3x10) 6 3 Screws (BVTP 3x14) 5 Screw (BVTP 3x14) 4 Screws (BVTP 3x14) 1 Handle Cabinet (rear) 7 CNP901 Cabinet (front) sub ASSY POWER board Back up board 6 Claw Battery board 3 Screws (BVTP 3x10) 8 Bracket (2), Yoke 1 CN903 4 Screws (BVTP 3x10) Cabinet (rear) 2 CN904 7 5 9 7 3-3.

44、CD BLOCK ASSY 3-4. CONTROL BOARD 2 CN310 4 2 CN305 2 CN303 2 CN311 3 To S901 (CD door open/close) CD block ASSY 2 Wire, parallel (23 core) (CN308) 2 CN306 1 Screws (BVTP 3x12) 1 Screws (BVTP 3x12) Cabinet (front) sub ASSY 2 Screws (BVTP 2.6x8) 3 Control board 1 CN808 2 Screws (BVTP 2.6x8) 1 CN806 1 CN807 Cabinet (front) sub ASSY 8 3-5. POWER KEY BOARD, MEGA BASS BOARD, PRESET BOARD, VOLUME BOARD 3-6. KEY BOARD3-7. HEADPHONE BOARD 7 Screw (