sony_MZ-E900_service_manual 维修电路图.pdf

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1、Ver 1.1 2001.01 MZ-E900 SERVICE MANUAL PORTABLE MINIDISC PLAYER SPECIFICATIONS US Model Canadian Model AEP Model UK Model E Model Tourist Model Model Name Using Similar MechanismNEW MD Mechanism TypeMT-MZE900-173 Optical Pick-up Mechanism TypeLCX-4E US and foreign patents licensed from Dolby Laborat

2、ories Licensing Corporation System Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: l = 790 nm Emission duration: continuous Laser output: less than 44.6 W* * This output is the value measured at a distance of 200 mm from the objective lens surfa

3、ce 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 Coding ATRAC (Adaptive TRansform Acoustic Coding) ATRAC3: LP2 ATRAC3: LP4 Modulation system EFM (Eight to Four

4、teen 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, load impedance 16 ohms Power requirements Nickel metal hydride rec

5、hargeable battery One NH-14WM(A) (supplied): 1.2V, 1,350 mAh (min) One LR6 (size AA) battery (not supplied) External power jack: Power rating 1.5V DC Battery operation time 1) 2) BatteriesStereo(normal)LP2 StereoLP4 Stereo Ni-MH rechargeable293337 battery NH-14WM (A) 1) LR6 (SG) Sony424958 alkaline

6、dry battery 3) LR6 (SG) Sony7687100 alkaline dry battery 3) and a Ni-MH rechargeable rechargeable battery 1) Unit:Approx. hours 1) With a fully charged battery 2) Measured in accordance with the EIAJ (Electronic Industries Association of Japan) standard (using a Sony MDW-series Mini-disc). 3) When u

7、sing a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). Note The battery life may be shorter depending on operating conditions, the surrounding temperature, and the battery type. Dimensions Approx. 77.7 x 12.7 x 71.0 mm (w/h/d) (3 1/8 x 1/2 x 2 7/8 in.) (not including projecting par

8、ts and controls) Mass Approx. 58g (2.0 oz) (the player only) Supplied accessories Headphones/earphones with a remote control (1) Battery charger (1) (EXCEPT Korean MODEL) Rechargeable battery (1) Rechargeable battery carrying case (1) (Tourist MODEL) Dry battery case (1) Carrying pouch (1) (EXCEPT U

9、S MODEL) AC plug adaptor (1) (E33, Tourist model) Design and specifications are subject to change without notice. 9-927-992-12 2001A0200-1 2001.1 Sony Corporation Audio Entertainment Group General Engineering Dept. 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MZ-E900 Specifications . 1 1.SERVICING NOTE. 2 2.GENE

10、RAL Location and Function of Controls . 3 3.DISASSEMBLY 3-1. “Lid ASSY, Upper”, Holder ASSY . 4 3-2. Mechanism Deck . 4 3-3. Audio Board. 5 3-4. Bracket (L) ASSY, Bracket (R) ASSY . 5 3-5. Main Board, Bracket (L) ASSY, SW Board . 6 3-6. Optical Pick-up ASSY . 6 4.TEST MODE. 7 5.ELECTRICAL ADJUSTMENT

11、S.11 6.DIAGRAMS 6-1. Block Diagram. 15 6-2. Printed Wiring Boards Main Section (1/2) . 16 6-3. Printed Wiring Boards Main Section (2/2) . 17 6-4. Schematic Diagram Main Section (1/2) . 18 6-5. Schematic Diagram Main Section (2/2) . 19 6-6. Printed Wiring Boards Audio Section . 20 6-7. Schematic Diag

12、ram Audio Section . 21 7.EXPLODED VIEWS 7-1. Front Section . 25 7-2. Mechanism Deck Section . 26 8.ELECTRICAL PARTS LIST. 27 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. REP

13、LACE 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

14、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. TABLE OF CONTENTS SECTION 1 SERVICING NOTE

15、 When 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). * Replacement of CXD2671-201GA (IC601) used in this set requires a special tool.

16、 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Open/Close detection switch (S809) Mechanism deck section r UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead-free mark (

17、LF) indicating 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 sold

18、er. Ordinary 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, s

19、o be careful! 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 ordinar

20、y solder. Ver 1.1 2001.01 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MZ-E900 SECTION 2 GENERALThis section is extracted from instruction manual. Ver 1.1 2001.01 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MZ-E900 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. “LID ASSY, UP

21、PER”, HOLDER ASSY 3-2. MECHANISM DECK r The equipment can be removed using the following procedure. Optical pick-up ASSY Set “Lid ASSY, Upper”, Holder ASSY Mechanism deck Audio board Main board, Bracket (L) ASSY, SW board Bracket (R) ASSY 1 Screws (MI 1.4) Panel, bottom 4 Bracket (stop) ASSY Holder

22、ASSY 3 Move it away from projection 3 Move it away from projection 1 Screws (MI 1.4) 2 Lid ASSY, upper 1 Screws (MD), step Panel, bottom 6 Motor flexible board 7 OP flexible board 4 Claw 2 5 3 Mechanism deck 5 MZ-E900 3-3. AUDIO BOARD 3-4. BRACKET (R) ASSY Panel, bottom 2 CN801 1 Switch flexible boa

23、rd Audio board 1 Screws (MI 1.4) 2 Screws (MI 1.4) 3 Bracket (R) ASSY Panel, bottom Ver 1.1 2001.01 6 MZ-E900 Panel, bottom Main board 6 Remove solder 2 Lid, battery case 1 Claw 5 3 7 8 Bracket (L) ASSY Knob (AVLS) SW board Knob (HOLD) Knob (open) 4 Screw (MI 1.4) 3 Screw (MI 1.4) 4 Spring, thrust d

24、etent 1 Washer 2 Gear (SA) 5 Optical pick-up ASSY (LCX-4E) 3-5. MAIN BOARD, BRACKET (L) ASSY, SW BOARD 3-6. OPTICAL PICK-UP ASSY Note :On installation of bottom panel assy, adjust the position of both two switches (S807, S808) and two knobs (AVLS, HOLD). 7 MZ-E900 Remote control LCD Press and hold d

25、own 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 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 an

26、d other part. When method 2 was used: Turn off the power. Note: If electrical adjustment (see page 11) has not been finished 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 Ove

27、rall Adjustment mode which 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 adj

28、ustments can be performed 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 Solde

29、r bridge and short TAP601 (TEST) on the main board. Then turn on the power. MAIN BOARD (SIDE A) 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 con

30、trol 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 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

31、LCD repeats a cycle of the fol- lowing displays: SECTION 4 TEST MODE 888 u 008 V1.000 F 1SHUFF PGM SOUND 1 2 BASS 1 2 All on All off Microprocessor version display C613C605 C810 C802 R911 R607 R617 C606 C610 TP921 SHORT: TEST MODE OPEN: NORMAL MODE TAP601 OPEN : Normal mode SHORT : Test mode TAP601

32、Test Mode (Display 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 abou

33、t 3 sec) Terminate key checking or open the top panel. 8 MZ-E900 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 assigned with a three-digit item number. The 100th place is a major item, 10th pl

34、ace is a middle item, and unit place is a minor item. Note: In the Power mode, the item title display is only displayed. 5. To terminate the Manual mode and return to the TEST MODE, press x key. 4-5. OVERALL ADJUSTMENT MODE 4-5-1. Outline of the function This mode is designed to adjust the servo sys

35、tem 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 ADJUST- MENTS. (See page 11) 4-6. SELF-DIAGNOSTIC DISPLAY MODE 4-6-1. Outline of the function The S

36、elf-diagnostic system is used in this set. If an error occurs during playback, this system detects the fault through the microprocessors mechanism and power control blocks and stores the cause in EEPROM in a history format. This history, which can be viewed in the TEST MODE, provides the means of lo

37、cating the fault in troubleshooting. 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

38、to clear the 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 4. During each test mode, the display is changed from one to another each time DISPLAY

39、 key is pressed. Address & Adjusted Value Display LCD display Jitter Value & Adjusted Value Display LCD display Block Error Value & Adjusted Value Display LCD display ADIP Error Value & Adjusted Value Display LCD display Item Title Display LCD display 000 Manual Change Major Item Change Middle Item

40、Change Minor Item Change Adjustment Value Write Adjustment Value . key : 100th place of mode number increase + key : 100th place of mode number decrease key : 10th place of mode number increase + key : 10th place of mode number decrease key : Up + key : Down key : When adjusted value is changed : Ad

41、justed value is written. When adjusted value is not changed : That item is adjusted automatically. keykey x key x N key N key : Unit place of mode number increase key : Unit place of mode number decrease N X 011 C68S01 adress mode number adjusted value 011 OFFJ01 jitter value mode number adjusted va

42、lue 011 063B01 block error value mode number adjusted value 011 059A01 ADIP error value mode number adjusted value 011 LrefPw 01 item title mode number adjusted value 9 MZ-E900 4-6-2. Self-diagnostic mode 1. Set the TEST MODE. 2. With all the LCD display segments blinking on the set, press DISPLAY k

43、ey and the Self-diagnostic mode is entered. 3. Hereinafter, each time N key is pressed, the reference information display changes as follows: Press . key to go back to the previous display. Contents of the history codes History code numberContents 1The first error that occurred. NThe last error that

44、 occurred. N-1The first error from the last one. N-2The second error from the last one. R Total recording time ( is displayed for MZ-E900) Contents of faultDisplay codeMeaning of code Simplified Description contents No error00No error No error 01Access target address illegally specifiedAdrsAn attemp

45、t to access an abnormal address. Servo system error 02HIGH TEMPTempHIGH TEMP 03FOCUS ERRORFcusFocus off-center. 04SPINDLE ERRORSpdlAbnormal rotation of disc 11TOC ERRORTOC TOC error 12READ DATA ERRORData Power system error22LOWBATTLBatInstantaneous interruption detected. 31OFFSET ERROROfstOffset err

46、or Offset error 32FE_ABCD_OFFSET_ERRABCDFE ABCD Offset error 33TE_ABCD_OFFSET_ERRTETE ABCD Offset error 34X1_TE_OFFSET_ERRX1TEX1 TE ABCD Offset error 001 1 Adrs History code Error display code Simplified contents 0XX 1 # # # # 0XX N # # # # 0XX N1 # # # # 0XX N2 # # # # 0XX R Description of the erro

47、r display codes 4-6-3. Clearing the error display code After servicing, reset the error display code. 1. Set the TEST MODE. 2. Press the DISPLAY key on the remote control activates the self- diagnosis display mode. 3. To reset the error display code press X key on the remote con- trol when the code is displayed.(except for R - - - - display) (All the dat