sony_MZ-E500_service_manual 维修电路图.pdf

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1、MZ-E500 AEP Model UK Model Australian Model E Model SERVICE MANUAL PORTABLE MINIDISC PLAYER SPECIFICATIONS Model Name Using Similar MechanismNEW MD Mechanism TypeMT-MZE500-174 Optical Pick-up Mechanism TypeLCX-4E US and foreign patents licensed from Dolby Laboratories Licensing Corporation Audio pla

2、ying 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 value measured at a distance of 200 mm from the objective lens surface on the optical pick-up block with 7 mm aper

3、ture. 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 Fourteen Modulation) Number of channels 2 stereo c

4、hannels 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 Cadmium rechargeable battery One NC-6WM (supplied): 1.2V, 600

5、mAh One LR6 (size AA) battery (not supplied) External power jack: Power rating 1.5V DC Battery operation time Dimensions Approx. 74.5 17.7 80.5 mm (w/h/d) (3 23/32 3 1/4 in.) (not including projecting parts and controls) Mass Approx. 76g (2.7 oz) (the player only) Supplied accessories Headphones/ear

6、phones with a remote control (1) Battery charger (1) Rechargeable battery (1) Rechargeable battery carrying case (1) Dry battery case (1) Carrying pouch (1) (except for the U.S.A model) AC plug adaptor (1) (world model only) Design and specifications are subject to change without notice. Battery lif

7、e(EIAJ1) Batteries Ni-Cd rechargeable battery NC-6WM2) LR6 (SG) Sony Alkaline dry battery3) LR6 (SG)3) and NC-6WM2) (Unit: Approx. hours) 1) Measured in accordance with the EIAJ (Electronic Industries Association of Japan) standard (using a Sony MDW-series Mini-disc). 2) With a fully charged battery

8、 3) When using 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. Stereo (normal)LP2 StereoLP4 Stereo 141618 424958 596575 Ver 1.0 2000. 12 收音机爱好者资料库 Ra d i o F

9、a n s .CN 2 1. SERVICING NOTE 3 2. GENERAL 4 3. DISASSEMBLY 3-1. “Panel Block Assy, Upper”, “Holder Assy” 5 3-2. Mechanism Deck 5 3-3. Bracket Assy 6 3-4. Main Board 6 3-5. Optical Pick-up Block 7 4. TEST MODE 8 5. ELECTRICAL ADJUSTMENTS 12 6. DIAGRAMS 6-1. Block Diagram 17 6-2. Printed Wiring Board

10、s Main Section (1/2) 19 6-3. Printed Wiring Boards Main Section (2/2) 21 6-4. Schematic Diagram Main Section (1/3) 23 6-5. Schematic Diagram Main Section (2/3) 25 6-6. Schematic Diagram Main Section (3/3) 27 6-7. IC Block Diagrams 29 6-8. IC Pin Function Description 31 7. EXPLODED VIEWS 7-1. Main Se

11、ction 37 7-2. Mechanism Deck Section (MT-MZE500-174) 38 8. ELECTRICAL PARTS LIST 39 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 THESE COMPONENTS WITH SONY PARTS WHO

12、SE 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 board (within 3 times). Be careful not to

13、 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 CAUTION Use of controls or adjustments or performance of procedur

14、es other than those specified herein may result in hazardous radiation exposure. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 * Replacement of CXD2671-203GA (IC601) used in this set requires a special tool. When repairing this device with the power on, if you remove the main board, this device stops working. In

15、this case, you work without the device stopping by fastening the hook of the Open/Close detection switch (S809). SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potentia

16、l difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and 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 w

17、ith care. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-4E) The laser diode in the optical pick-up block may suffer electrosta

18、tic break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform measures against electrostatic break-down sufficiently before the operation. The flexible board is easily damaged and should be handled with care. OPTICAL PICK-UP FLEXIBLE BOARD las

19、er-tap Open/Colse detection switch (S809) 收音机爱好者资料库 Ra d i o Fa n s .CN 4 SECTION 2 GENERAL LOCATION AND FUNCTION OF CONTROLS This section is extracted from instruction manual. . x VOL +/ x X 1N . N VOL+ VOL 2 ./N VOL +/ HOLD DISPLAYSOUND PLAYMODERPT/ENT x HOLD AVLS PLAY MODE OPERATE lamp Indicador

20、OPERATE 5 r Disassemble the unit in the order as shown below. Note : Follow the disassembly procedure in the numerical order given. 3-1. “PANEL BLOCK ASSY, UPPER”,“HOLDER ASSY” 3-2. MECHANISM DECK SECTION 3 DISASSEMBLY Optical pick-up block Mechanism deck“Panel block assy,upper”,“Holder assy”SetBrac

21、ket assyMain board Panel block assy, upper 1 Screws (MI 1.4 2.5) 3 Move it away from projection Case (rear) Holder assy 2 1 Screws (MI 1.4 1.6) 3 Move it away from projection Mechanism deck 1 Screw (MD), step 4 OP flexible board 5 Motor flexible board 2 Claw 3 6 3-3. BRACKET ASSY 3-4. MAIN BOARD Bra

22、cket assy 1 Screws (1.7) Projections 2 5 Case (rear) 2 Lid, battery case Main board 6 Remove the soldring Case (battery) 6 Remove the soldering 3 Screws (1.7) 1 Claw 4 7 3-5. OPTICAL PICK-UP BLOCK Optical pick-up block (LCX-4E) 3 Screw (M 1.4) 5 4 Spring, thrust detent 2 Gear (SA) 1 Washer 8 Remote

23、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 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 mak

24、e a short with the chassis and other part. When method 2 was used: Turn off the power. Note : If electrical adjustment (see page 12) 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 M

25、ODE, this set provides the Overall 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

26、 the Manual mode, selected adjustments 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

27、methods are available. 1 Solder bridge and short TAP601 (TEST) on the main board. Then turn on the power. MAIN BOARD (SIDE B) 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, pr

28、ess 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 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. Whe

29、n the TEST MODE is set, the LCD repeats a cycle of the following displays: SECTION 4 TEST MODE 888 u 009 V1.050 F 1SHUFF PGM SOUND 1 2 BASS 1 2 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 keyVOL+

30、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) Terminate key checking or open the top panel. VOL VOL VOL+ 42 43 TP901 OPEN : Normal mode SHORT : Tes

31、t mode TAP601 9 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 place is a middle item, and unit place is a minor i

32、tem. 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 system automatically by going through all the adjust

33、ment items. The power adjustment manual setting is performed in this mode also. Usually, this mode is used to perform automatic adjustments when servicing the set. For further information, refer to section 5. ELECTRICAL ADJUSTMENTS. (See page 12) 4-6. SELF-DIAGNOSTIC DISPLAY MODE 4-6-1. Outline of t

34、he function The Self-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, provide

35、s the means of locating 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 Man

36、ual mode is used 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 VOL+ key to set the Manual mode. Remote control LCD display 4. During each test mode, the display is changed from one to anoth

37、er each time DISPLAY 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

38、 Change Middle Item Change Minor Item Change Adjustment Value Write Adjustment Value . key : 100th place of mode number increase VOL+ VOL VOL+ VOL 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 : Whe

39、n adjusted value is changed : Adjusted 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 VOL+ VOL 011 C68S01 adress mode number adjusted value 011 OF

40、FJ01 jitter value mode number adjusted value 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 10 4-6-2. Self-diagnostic mode 1. Set the TEST MODE. 2. With all the LCD display segments bl

41、inking on the set, press DISPLAY key 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 Description No error An attempt to access an a

42、bnormal address. HIGH TEMP Focus off-center. Abnormal rotation of disc Faulty TOC contents Data could not be read at SYNC Instantaneous interruption detected. Offset error FE ABCD Offset error TE Offset error X1 TE Offset error 001 1 Adrs History code Error display code Simplified contents 0XX 1 # #

43、 # # 0XX N # # # # 0XX N1 # # # # 0XX N2 # # # # 0XX R Description of the error display codes 4-6-3. Clearing the error display code After servicing, reset the error display code. 1. Set the TEST MODE. 2. Pressing the DISPLAY key on the remote control activates the self-diagnosis display mode. 3. To

44、 reset the error display code, press X key (2 times)on the remote control when the code is displayed. (except “R - - - -” ) (All the data on the 1st, N, N-1 and N-2 will be reset) Meaning of code No error Access target address illegally specified HIGH TEMP FOCUS ERROR SPINDLE ERROR TOC ERROR READ DA

45、TA ERROR LOWBATT OFFSET ERROR FE_ABCD_OFFSET_ERR TE_OFFSET_ERR X1_TE_OFFSET_ERR Contents of fault No error Servo system error TOC error Power system error Offset error Display code 00 01 02 03 04 11 12 22 31 32 33 34 Simplified contents Adrs Temp Fcus Spdl TOC Data LBat Ofst ABCD TE X1TE History cod

46、e numberContents 1The first error that occurred. NThe last error that 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-E500) 11 4-8. KEY CHECK MODE 4-8-1. Outline of the function This mode is used to check to make sur

47、e that each of the keys (including the slide switch) on the set operates normally.(The 1 kHz signal is outputted from the L and R channels of head phones) 4-8-2. Setting the Key Check mode 1. Set the TEST MODE. Press and hold down DISPLAY key (for more than 3 sec) to set the Key Check mode. LCD disp

48、lay 2. When each key on the set and on remote control is pressed, its name is displayed on the LCD. (The operated position is displayed for 4 sec after the slide switch is operated. If any other key is pressed during this display, the LCD switches to its name display) Example: When N key on the set

49、is pressed: LCD display Example: When N key on the remote control is pressed: LCD display XX: AD value of the remote control key (hexadecimal 00 to FF) 3. When all the keys on the set and on the remote control are considered as OK, the following displays are shown for 2 sec. (The key pressed to enter the Key Check mode has been checked even if it is not pressed in this mode) Example: When the keys on the set are considered as OK: LCD display Example: When