sony_MZ-E707_service_manual 维修电路图.pdf

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1、MZ-E707 SERVICE MANUAL PORTABLE MINIDISC PLAYER SPECIFICATIONS E Model Tourist Model Model Name Using Similar MechanismMZ-E909 MD Mechanism TypeMT-MZE909-173 Optical Pick-up Mechanism TypeLCX-4E US and foreign patents licensed from Dolby Laboratories Licensing Corporation Ver 1.1 2001.12 9-873-338-0

2、2 2001L0200-1 2001.12 Sony Corporation Personal Audio Company Published by Sony Engineering Corporation Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm Emission duration: continuous Laser output: less than 44.6 W* * This output is the v

3、alue measured at a distance of 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture. Revolutions Approx. 300 rpm to 2,700 rpm Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz CodingATRAC (Adaptive TRansform Acoustic Co

4、ding) ATRAC3: LP2 ATRAC3: LP4 Modulation system EFM (Eight to Fourteen Modulation) Number of channels 2 stereo channels 1 monaural channel Frequency response 20 to 20,000 Hz 3 dB Wow and Flutter Below measurable limits Outputs Headphones/earphones: stereo mini-jack, maximum output level 5 mW + 5 mW

5、load impedance 16 ohms Power requirements Nickel metal hydride rechargeable battery One NH-14WM(A) (supplied): 1.2V, 1,350 mAh One LR6 (size AA) battery (not supplied) External power jack (for the battery charging stand): Power rating 3V DC Battery operation time See “When to replace or recharge the

6、 battery” Dimensions Approx. 71.9 x 78.0 x 13.9 mm (w/h/d) ( 2 7 /8 x 3 1 / 8 x 9 /16 in.) (not including projecting parts and controls) MassApprox. 69 g (2.5 oz) (the player only) Supplied accessories Headphones/earphones with a remote control (1) Battery charging stand (1) AC power adaptor* (for t

7、he supplied battery charging stand) Rechargeable battery (1) Rechargeable battery carrying case (1) Dry battery case (1) Carrying pouch (1) AC plug adaptor (1) (world model only) Design and specifications are subject to change without notice. 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MZ-E707 Ver 1.1 2001.12 S

8、pecifications . 1 1.SERVICING NOTE. 3 2.GENERAL Playing an MD . 4 3.DISASSEMBLY 3-1. Upper Lid ASSY. 5 3-2. Mechanism ASSY . 5 3-3. Bracket (R) ASSY . 6 3-4. Main Board Sub ASSY, SW Board. 6 3-5. Optical Pick-up ASSY . 7 4.TEST MODE. 8 5.ELECTRICAL ADJUSTMENTS. 12 6.DIAGRAMS 6-1. Explanation of IC T

9、erminals. 16 6-2. Block Diagram. 17 6-3. Printed Wiring Boards Main Section (1/2) . 18 6-4. Printed Wiring Boards Main Section (2/2) . 19 6-5. Schematic Diagram Main Section (1/2) . 20 6-6. Schematic Diagram Main Section (2/2) . 21 6-7. Printed Wiring Boards Audio Section . 22 6-8. Schematic Diagram

10、 Audio Section . 23 7.EXPLODED VIEWS 7-1. Main Section. 27 7-2. Mechanism Deck Section . 28 8.ELECTRICAL PARTS LIST. 29 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE

11、 THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C during repairing. Do not touch the soldering iron on the same conductor of the circuit boar

12、d (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. TABLE OF CONTENTS * Replacement of CXD2671B-20

13、6GA (IC601) used in this set requires a special tool. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead-free mark (LF) ind

14、icating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.) : LEAD FREE MARK Unleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40C higher than ordinary solder. Ord

15、inary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be ca

16、reful! Strong viscosity Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solde

17、r. MAIN BOARD SUB ASSY Audio board is supplied with main board sub ASSY. Audio board can not be moved away from main bord.Give a damage when take it off forcibly. The part that audio board overlap with main board can not be repaired. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MZ-E707 SECTION 1 SERVICING NOTE W

18、hen repairing this device with the power on, if you remove the main board, this device stops working. In this case, you work without the device stopping by fastening the hook of the Open/Close detection switch (S809). Open/Close detection switch (S809) 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MZ-E707 SECTION

19、 2 GENERAL This section is extracted from instruction manual. The Player 1 9 7 F E C D 2 8 1 ./x/ N button 2 3 Color Info-LED 3 GROUP button 4 HOLD (Locking the control) switch 5 i (earphones) jack 6 OPEN switch 7 Terminals for charging stand/ dry battery case (at the bottom) 8 VOL +/ button 9 Batte

20、ry compartment The earphones with a remote control J + H I K D A L F B E G C 1 Headphones/earphones 2 Stereo mini plug 3 X (pause) button 4 SOUND button 5 RPT/ENT (Repeat/Enter) button 6 PLAYMODE button 7 DISPLAY button 8 x (stop) button* 9 Control (./N) q; Control VOL +/ Pull and turn to adjust the

21、 volume. qa HOLD (Locking the control) switch qs Display window * The stop button also operates as the enter button, depending on the function. The display window of the remote control F G ABCDE 1 Track number display 2 Charactor information display 3 Disc indication 4 Alarm indication 5 Play mode i

22、ndication 6 Battery level indication 7 SOUND indication The battery charging stand B A C 1 Terminals for charging 2 CHARGE lamp 3 DC IN (3V jack) (at the rear) To Find the beginning of the current track or the previous track3) Find the beginning of the next track4) Go backwards while playing Go forw

23、ard while playing Pause Remove the MD 2)You can turn off the beep sound. For more details, see “Turning off the beep sound.” 3)If you turn the control towards . on the remote control (or press . on the player) during the first track of the disc, the player goes to the beginning of the last track on

24、the disc. 4)If you turn the control towards N on the remote control (or press N on the player) during the last track of the disc, the player goes to the beginning of the first track on the disc. 5)If you open the lid, the playback will begin from the beginning of the first track (except when disc in

25、formation is stored to the personal disc memory or when group mode is on). z The MZ-E707 supports the newly developed DSP TYPE-R for ATRAC. It thus allows you to enjoy TYPE-R high-quality sound from MDs recorded in SP stereo on TYPE-R- equipped MD decks, etc. Note When removing the disc, make sure t

26、o press x first, and then slide OPEN. Viewing the display window of the remote control Track number Track name6) or elapsed time of the track 6)Appears only with MDs that have been electronically labeled. z The player can play the track recorded by 2 or 4 long playing mode (LP2 or LP4). Normal stere

27、o playback, LP2 stereo playback, LP4 stereo playback or monaural playback is automatically selected to match the audio source. The display on the remote control will turn off shortly after you press x. Do this (Beeps2) in the headphones) Turn the control towards . on the remote control once (three s

28、hort beeps). (Or press . on the player once.) Turn the control towards . on the remote control repeatedly (continuous three short beeps). (Or press . on the player repeatedly.) Turn the control towards N on the remote control (two short beeps). Press N on the player once. Turn and hold the control t

29、owards . on the remote control. Hold down . on the player. Turn and hold the control towards N on the remote control. Hold down N on the player. Press X on the remote control (continuous short beeps). Press X on the remote control again to resume play. Press x, and then slide OPEN.5) Playing an MD I

30、nsert an MD. 12 3 Play an MD. 2 N . VOLUME +/ GROUP x x X 1N VOL+ VOL . 1 Turn the control towards N on the remote control (or press N on the player) to play the disc. A short beep sounds in the headphones/earphones when using the remote control. The LED flashes and then lights up. 2 Pull and turn V

31、OL +/ on the remote control (or press VOLUME +/ on the player) to adjust the volume. The volume indicator appears in the display, allowing you to check the volume level. After you adjust the volume, push back the control. To stop play, press x. Playback starts from the point you last stopped playing

32、. To start playback from the beginning of the disc, turn and hold the control towards N on the remote control (or hold down N on the player) for 2 seconds or more. 1) The LED indicates the current operating status by the lighting up in the following colors. When the battery power is exhausted, the L

33、ED starts flashing. For more details, see “When to replace or recharge the battery.” LED colorOperating status RedNormal play (The LED lights up continuously) GreenGroup mode* (The LED lights up continuously) OrangeGroup skip mode* (The LED lights for about 5 seconds) *For more details, see “Using t

34、he group function.” 1 2 Insert an MD with the lable side facing up, pushing the MD to the direction of the arrow in the illustration. 1 Slide OPEN to open the lid.2 Insert an MD.3 Close the lid. 3 Color Info-LED1) 5 MZ-E707 Ver 1.1 2001.12 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedur

35、e in the numerical order given. 3-1. UPPER LID ASSY 3-2. MECHANISM ASSY r The equipment can be removed using the following procedure. Upper lid ASSYSet Optical pick-up ASSY Mechsnism ASSY Bracket (R) ASSY Main board Sub ASSY SW board 2 1 Screws (M1.4) 1 Screws (M1.4) Bracket (bottom) ASSY Upper lid

36、ASSY 7 5 2 4 9 Motor flexible board (CN551) 6 Claw 8 OP flexible board (CN501) 1 Move claw from bracket (stop) ASSY 3 Screw (step) Bracket (stop) ASSY Panel, bottom Bracket (R) ASSY Mechanism deck 6 MZ-E707 Ver 1.1 2001.12 3-4. MAIN BOARD SUB ASSY, SW BOARD Note :On installation, adjust the position

37、 of knob (HOLD). 3-3. BRACKET (R) ASSY 2 1 Screw, (M1.4) 1 Screw, (M1.4) Panel, bottom Bracket (bottom) ASSY Bracket (R) ASSY 6 8 9 5 2 Knob (HOLD) Main board Bracket (bottom) ASSY SW board Panel, bottom 7 Remove solder (Two places) 1 Screws (M1.4) 1 Screws (M1.4) 1 Screws (M1.4) 1 Screws (M1.4) 4 L

38、id, battery case Case (K), battery Belt, ornamental 3 Claw (Audio board) MAIN BOARD SUB ASSY Audio board is supplied with main board sub ASSY. Audio board can not be moved away from main bord. Give a damage when take it off forcibly. The part that audio board overlap with main board can not be repai

39、red. 7 MZ-E707 3-5. OPTICAL PICK-UP ASSY 5 3 Screw (MI 1.4) 4 Spring, thrust detent 1 Washer 2 Gear (SA) Optical pick-up ASSY (LCX-4E) 8 MZ-E707 Remote control LCD Press and hold down X to hold the current display while the key is being pressed. 4-2-3. How to release the TEST MODE When method 1 was

40、used: Turn off the power and open the solder bridge on TAP601 on the main board. Note: The solder should be removed clean. The remaining solder may make a short with the chassis and other part. When method 2 was used: Turn off the power. Note: If electrical adjustment (see page 11) has not been fini

41、shed completely, always start in the test mode. (The set cannot start in normal mode) 4-3. TEST MODE STRUCTURE 4-1. GENERAL When entered in the TEST MODE, this set provides the Overall Adjustment mode which allows CD and MO discs to be auto- matically adjusted. In the Overall Adjustment mode, the sy

42、stem discriminates between CD and MO discs, performs adjustments in sequence automatically, and displays the faulty location if any fault is found. In the Manual mode, selected adjustments can be performed automatically. The attached remote control is used to operate the TEST MODE. Unless otherwise

43、specified in the text, the key means that on the remote control. 4-2. SETTING THE TEST MODE 4-2-1. How to set the TEST MODE To set the TEST MODE, two methods are available. 1Solder bridge and short TAP601 (TEST) on the main board. Then turn on the power. MAIN BOARD (SIDE A) 2In the normal mode, oper

44、ate the keys on the set and those on the remote control as specified below: Turn on HOLD switch on the set. Holding down x (STOP) key on the set, press the keys on the remote control in the following sequence: N t N t . t . t N t . t N t . t X t X 4-2-2. Operations when the TEST MODE is set When the

45、 TEST MODE is entered, the system switches to the dis- play check mode within the TEST MODE. From this mode, the other Test modes can be accessed. When the TEST MODE is set, the LCD repeats a cycle of the fol- lowing displays: SECTION 4 TEST MODE 888 u 008 V1.000 F1SHUFF PGM SOUND 12 Test Mode (Disp

46、lay Check Mode) Manual Mode Servo Mode Audio Mode Power Mode OP Alignment Mode key key + key + key x x B key key xkey .or key xkey Overall Adjustment Mode Sound Skip Check Result Display Mode Self-diagnostic Display Mode Key Check Mode DISPLAY key DISPLAY key (Press and hold down about 3 sec) Termin

47、ate key checking or open the top panel. C613C605 C810 C802 C699 R607 R601 R80 C606 C610 TP921 SHORT: TEST MODE OPEN: NORMAL MODE TAP601 9 MZ-E707 2. During each test, press and hold down N key or . key for a while to move the optical pickup on the sled outer or inner perimeter. 3. Each test item is assigne