sony_MZ-E60_service_manual 维修电路图.pdf

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1、 1 MICROFILM MZ-E60 SERVICE MANUAL PORTABLE MINIDISC PLAYER SPECIFICATIONS US Model Canadian Model AEP Model E Model System 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 (Th

2、is output is the value measured at a distance of 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.) Revolutions 800 rpm to 1,800 rpm Error correction Advanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency 44.1 kHz Coding Adaptive TRansform Acoust

3、ic Coding (ATRAC) 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 limit Outputs Headphones: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohms

4、 General Power requirements One LR6 (size AA) battery (not supplied) Battery operation time You can check the battery condition with the battery indication which is displayed while using the player. t Battery power decreasing v r Weak battery v e The battery has gone out. “LOW BATT” flashes in the d

5、isplay on the remote control, and the power goes off. Battery Life Approximately 12 hours of playback can be expected with one LR6 (size AA) alkaline battery (not supplied). Note The battery life may shorter depending on operating conditions and temperature of the location. Continued on next page US

6、 and foreign patents licensed from Dolby Laboratories Licensing Corporation. Model Name Using Similar MechanismMZ-E90 MD Mechanism TypeMT-MZE60-169 Optical Pick-up Mechanism TypeLCX-2E (Photo: Silver) 收音机爱好者资料库 Ra d i o Fa n s .CN 2 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 O

7、R DOTTED LINE WITH MARK 0 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. Flexible Circuit Board Repairing Keep the temperature of the solde

8、ring iron around 270C during repairing. Do not touch the soldering iron on the same conductor 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 tha

9、t the minus side of a tantalum capacitor may be damaged by heat. Precautions for Laser Diode Emission Check When checking the emission of the laser diode during adjust- ments, never view directly downwards as this may lead to blindness. Precautions for Using Optical Pick-up (LCX-2E) As the laser dio

10、de inside the optical pick-up damages by static electricity easily, solder the laser tap of the Optical pick-up flexible board when handling. Also take the necessary measures to prevent damages by static electricity. Handle the Optical pick- up flexible board with care as it breaks easily. Laser tap

11、 Optical Pick-up flexible board CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. IN NO EVENT SHALL SELLER BE LIABLE FOR ANY DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE, OR LOSSES OR EXPENSE

12、S RESULTING FROM ANY DEFECTIVE PRODUCT OR THE USE OF ANY PRODUCT. “MD WALKMAN” is a trademark of Sony Corporation. This MiniDisc player is classi- fied as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the bottom exterior. Dimensions Approx. 81 25 74 mm (w/h/d) (3 1/4 1 3 in.

13、) not including projecting parts and controls Mass Approx. 95 g (3.4 oz.) the player only Approx. 136 g (4.8 oz.) incl. a premastered MD and a LR6 (size AA) alkaline battery Supplied accessories Headphones with a remote control (1) Carrying pouch (1) Design and specifications are subject to change w

14、ithout notice. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL

15、OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 1.SERVICING NOTE.4 2.GENERAL.5 Playing an MD right away!.5 3.DISASSEMBLY.7 3-1. Panel Assy, Upper .7 3-2. Holder Assy.7 3-3. Mechanism Deck .8 3-4. Main Board .8 3-5. Service Assy, OP .9 4.TEST MODE.10 4-1. General .10 4-2. Sett

16、ing the Test Mode .10 4-2-1. How to Set the Test Mode .10 4-2-2. Operations when the Test Mode is Set .10 4-2-3. How to Release the Test Mode .10 4-3. Test Mode Structure .10 4-4. Manual Mode .11 4-4-1. Outline of the Function .11 4-4-2. How to Set the Manual Mode.11 4-5. Overall Adjustment Mode .11

17、 4-5-1. Outline of the Function .11 5.ELECTRICAL ADJUSTMENTS.12 5-1. General .12 5-2. Notes for Adjustment .12 5-2-1. Jigs.12 5-2-2. Adjustment Sequence .12 5-2-3. Power.12 5-3. Reset NV.12 5-3-1. How to Reset NV .12 5-4. Overall Adjustment Mode .12 5-4-1. Overall Adjustment Mode Structure.12 5-4-2.

18、 Overall CD and MO Adjustment Method .12 5-4-3. Overall CD and MO Adjustment Items.13 TABLE OF CONTENTS 6.DIAGRAMS.14 6-1. IC Pin Description . 14 6-1-1. IC801 RU6915MF-0006 (System Control).14 6-2. Block Diagrams . 17 6-2-1. MD Block Diagram .17 6-2-2. Servo, System Control Block Diagram .19 6-3. P

19、rinted Wiring Boards and Schematic Diagrams. 21 6-3-1. Printed Wiring Board Main Board . 21 6-3-2. Schematic Diagram Main Board (1/4) . 25 6-3-3. Schematic Diagram Main Board (2/4) . 27 6-3-4. Schematic Diagram Main Board (3/4) . 29 6-3-5. Schematic Diagram Main Board (4/4) . 31 6-4. IC Block Diagra

20、ms .33 7.EXPLODED VIEWS.37 7-1. Main Unit Section .37 7-2. Mechanism Deck Section .38 8.ELECTRICAL PARTS LIST. 39 收音机爱好者资料库 Ra d i o Fa n s .CN 4 1) When repairing this device with the power on, if you remove the main board or open the upper panel assy, this device stops working. In this case, you c

21、an work without the device stopping by fastening the hook of the OPEN/CLOSE switch (MAIN board S809) with tape. 2) This set is designed to perform automatic adjustment for each adjustment and write its value to EEPROM. Therefore, when EEPROM (MAIN board IC802) has been replaced in service, be sure t

22、o perform automatic adjustment and write resultant values to the new EEPROM. Refer to section 4 Test Mode (page 10) for details. SECTION 1 SERVICING NOTE MAIN board S809 5 SECTION 2 GENERAL This section is extracted from instruction manual. 6 7 Note : This set can be disassemble according to the fol

23、lowing sequence. SECTION 3 DISASSEMBLY 3-1. PANEL ASSY, UPPER 3-2. HOLDER ASSY Note : Follow the disassembly procedure in the numerical order given. SetPanel Assy, UpperHolder AssyMechanism Deck Service Assy, OP Main Board 4 screws(1.4),MI 3 screws(1.4),MI 5 panel assy, upper 1 2 2 shaft 3 holder as

24、sy 1 shaft 8 3-3. MECHANISM DECK 3-4. MAIN BOARD 7 mechanism deck 1 sheet (BLIND) 6 CN551 5 CN501 claw 2 screw (MD), step 3 4 3 2 screws(1.7x2.5) 1 screws(1.7x2.5) 4 MAIN board knob (HOLD) S808 S806 S807 knobs (MB) Note : When installing, fit the knobs (HOLD, MB) and the switchs (S806, 807, 808). 9

25、3-7. SERVICE ASSY, OP 4 M 1.4 3 M 1.4 1 washer 2 gear (SA) 5 service assy, OP 10 Press and hold down PLAY MODE to hold the current display while the key is being pressed. 4-2-3. How to release the TEST MODE When method 1 was used: Turn off the power and open the solder bridge on TAP801 on the main b

26、oard. 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. 4-3. TEST MODE STRUCTURE SECTION 4 TEST MODE 4-1. GENERAL When entered in the TEST MODE, this set provides the Overall Adjustment mode wh

27、ich allows CD and MO discs to be auto- matically adjusted. In the Overall Adjustment mode , the system 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 perfor

28、med automatically. The attached remote control is used to operate the TEST MODE. Unless otherwise 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. 1 Solder bridge and short TAP

29、801 (TEST) on the main board. Then turn on the power. 2 In the normal mode, operate 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 .

30、t . t N t . t N t . t X t X 4-2-2. Operations when the TEST MODE is set When the TEST MODE is entered, the system switches to the display 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 following display

31、s: Remote control LCD L501 C518 CN551 815 TP518 CN501 1 5 10 15 20 TAP801 TAP801 MAIN BOARD (SIDE B) 888u 004 V1.100 All on All off Microprocessor version display Test Mode (Display Check Mode) Manual Mode Servo Mode Audio Mode Power Mode OP Alignment Mode key key + key + key x x key key Overall Adj

32、ustment Mode 11 Note: In the Power mode, the power adjustment value is only displayed. 4. 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. 5. To terminate the Manual mode and return to the TEST MODE, press x key. 4-5. O

33、VERALL ADJUSTMENT MODE 4-5-1. Outline of the function This mode is designed to adjust the servo system automatically by going through all the adjustment items. Usually, this mode is used to perform automatic adjustments when servicing the set. For further information, refer to section 5. ELECTRICAL

34、ADJUST- MENTS (page 12). 4-4. MANUAL MODE 4-4-1. Outline of the function The Manual mode is designed to perform adjustments and operational checks on the sets operation according to each individual function. Usually, no adjustments are made in this mode. However, the Manual mode is used to clear the

35、 memory before performing automatic adjustments in the Overall Adjustment mode. 4-4-2. How to set the Manual mode 1. Set the TEST MODE and press + key to set the Manual mode. Remote control LCD display 3. During each test mode, the display is changed from one to another each time DISPLAY key is pres

36、sed. 2. Each test item is assigned with a three-digit item number. The third digit stands for a major item, the second digit for a middle item, and the first digit for a moniro item. 000 AAASCC Change Major Item Change Middle Item Change Minor Item Change Adjustment Value Write Adjustment Value . ke

37、y : Up + key : Down key : Up + key : Down key : Up + key : Down key : Write keykey x key x N key N key : Up key : Down N X 011 XXXSXX 011 XX BXX 011 XX AXX 011 XXXJXX 011 XX RXX 731 XX VXX Address Value (FE) (TP525) 2 IC501 7890 Approx. 10mVp-p Approx. 180mVp-p 3 IC501 ed (RF OUT) (TP528) Approx. 0.

38、8Vp-p Waveforms(MODE:PLAY) 4 IC501 rf (TE) (TP523) Approx. 12mVp-p 100mV/div 5s/div 0.5V/div 5s/div 5mV/div 1s/div5mV/div 1s/div 27 6-3-3. SCHEMATIC DIAGRAM MAIN BOARD (2/4) Refer to page 34 for IC Block Diagrams. 28 MZ-E60 (OPEN/CLOSE) Note: All capacitors are in F unless otherwise noted. pF: F 50

39、WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. %: indicates tolerance. C : panel designation. A : B+ Line. Power voltage is dc 1.5V and fed with regulated dc power supply from battery terminal. Voltage is dc wit

40、h respect to ground under no-signal condition. no mark : PB : Impossible to measure Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Signal path. F: PB (Page 26) (Page 31) 29 30 6-3-4. SCHEMATIC DIAGRAM MAIN BOARD (3/4) Refe

41、r to page 34 for IC Block Diagrams. MZ-E60 TOTAL CURRENT PLAY : 40mA PAUSE : 36mA FF/REW : 60mA Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. %: indicates tolerance. A : B+ Line. Power voltage is dc 1.5V and fed with regulated dc power supply from battery terminal. Voltage is dc with