sony_MZ-E800_service_manual 维修电路图.pdf

《sony_MZ-E800_service_manual 维修电路图.pdf》由会员分享，可在线阅读，更多相关《sony_MZ-E800_service_manual 维修电路图.pdf（44页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL PORTABLE MINIDISC PLAYER E Model Tourist Model SPECIFICATIONS MZ-E800 US and foreign patents licensed from Dolby Laboratories Licensing Corporation. Photo: Silver type Model Name Using Similar MechanismNEW MD Mechanism TypeMT-MZE800-170 Optical Pick-up Mechanism TypeLCX-2E System Audi

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

3、 aperture. Revolutions 600 rpm to 2250 rpm Error correction Advanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency 44.1 kHz Coding Adaptive TRansform Acoustic Coding (ATRAC) Modulation system EFM (Eight to Fourteen Modulation) Number of channels 2 stereo channels 1 monaural channel F

4、requency response 20 to 20,000 Hz 3 dB Wow and Flutter Below measurable limit Outputs Earphones: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohms General Power requirements Nickel metal hydride rechargeable battery One NH-14WM (supplied): 1.2V, 1,400 mAh One LR6 (size AA) b

5、attery (not supplied) Sony AC Power Adaptor* (supplied) connected to the DC IN 3V jack Battery operation time Dimensions Approx. 79.5 76.7 17.0 mm (w/h/d) (not including projecting parts and controls) Mass Approx. 110g (the player only) Supplied accessories Earphones with a remote control (1) Chargi

6、ng stand (1) Nickel metal hydride rechargeable battery (1) AC power adaptor (1) Dry battery case (1) Rechargeable battery carrying case (1) Carrying pouch (1) Design and specifications are subject to change without notice. Playback Approx. 24 hours* Approx. 37 hours Approx. 64 hours Battery life* Ba

7、tteries Ni-MH rechargeable battery (NH-14WM) One (size AA) alkaline battery* One (size AA) alkaline battery* and a Ni-MH rechargeable battery (NH-14WM) *With a fully charged battery * When using a LR6 (SG) Sony “STAMINA” alkaline dry battery (produced in Japan). Note The battery life may be shorter

8、depending on operating conditions, the surrounding temperature, and the battery type. About power sources For use in your house or car: Use the supplied AC power adaptor or the DCC-E230 car battery cord (not supplied) to supply power to the player. Do not use any other power supply. Polarity of the

9、plug Ver 1.1 2001.02 9-927-939-12Sony Corporation 2001B0500-1Audio Entertainment Group C 2001.2General Engineering Dept. 收音机爱好者资料库 Ra d i o Fa n s .CN 2 TABLE OF CONTENTS 1.SERVICING NOTES.3 2.GENERAL.6 3.DISASSEMBLY.7 4.TEST MODE. 12 5.ELECTRICAL ADJUSTMENTS. 17 6.DIAGRAMS 6-1.Block Diagram MAIN Se

10、ction (1/2) . 21 6-2.Block Diagram MAIN Section (2/2) . 23 6-3.Block Diagram DISPLAY/KEY CONTROL/ POWER SUPPLY Section . 25 6-4.Printed Wiring Board . 27 6-5.Schematic Diagram MAIN Board (1/4) . 29 6-6.Schematic Diagram MAIN Board (2/4) . 31 6-7.Schematic Diagram MAIN Board (3/4) . 33 6-8.Schematic

11、Diagram MAIN Board (4/4) . 35 6-9.IC Pin Function Description . 40 7.EXPLODED VIEWS. 47 8.ELECTRICAL PARTS LIST. 50 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THE

12、SE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. Features Compact body with newly developed head-loading system. Insert or eject an MD with the slightest touch of a finger. Simple-to-charge folding standup battery charger Insert t

13、he MD player into the folding standup battery charger for simple, one- step charging. By connecting an optional car battery cord to the battery charger, you can listen to the player in the car without worrying about battery rundown. LCD display built into player for easy viewing in the car An easy-t

14、o-see LCD display built into the player allows you to monitor track numbers when the remote control display is out of view. Personalized sound through Digital Sound Preset functions You can store two sets of sound quality adjustments (made during playback) to two switches. Small body almost the size

15、 of a MiniDisc jacket Low power-consumption design for extended battery life. Easy-to-operate earphones remote control with backlit LCD Shock-resistant memory offsets up to 40 seconds of optical read errors. Notes on chip component replacement Never reuse a disconnected chip component. Notice that t

16、he minus side of a tantalum capacitor may be dam- aged by heat. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur- ing 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 t

17、he conductor when soldering or unsoldering. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in

18、the optical pick-up block may suffer electro- static break-down because of the potential 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 inc

19、luded in the repair parts. The flexible board is easily damaged and should be handled with 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 PI

20、CK-UP BLOCK (LCX-2E) The laser diode in the optical pick-up block may suffer electro- static break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform mea- sures against electrostatic break-down sufficiently before the op- eration. The flexibl

21、e board is easily damaged and should be handled with care. OPTICAL PICK-UP FLEXIBLE BOARD SECTION 1 SERVICING NOTES In performing the repair with the power supplied to the set, removing the MAIN board causes the set to be disabled. In such a case, fix a convex part of the open/close detect switch (S

22、809 on MAIN board) with a tape in advance. Replacement of CXD2661GA-2 (IC601) and CXR701080- 016GA (IC801) used in this set requires a special tool. There- fore, they cannot be replaced. On the set having the microcomputer version 1.000, the NV reset failure will occur. Therefore, in executing the N

23、V reset during electrical adjustment, follow the troubleshooting method of NV reset to perform the NV reset (see page 17). laser-tap mechanism deck section MAIN board tape open/close detect switch (S809) 收音机爱好者资料库 Ra d i o Fa n s .CN 4 open/close detect switch (S809) eject lever 2 shutter 1 Disc ins

24、ertion. ON (Fig. 1) a eject lever 2 Lock slider 4 Disc insertion. (Fig. 2) eject lever 2Unlock slider 4 (Fig. 3) b slider 4 (Fig. 4) b holder assy 3 Moving down to MAIN board side (downward). OPERATION OF MECHANISM When a disc is loaded. Open the shutter 1. (Fig. 1) j When a disc is inserted, the Ej

25、ect lever 2 moves in arrowdirection and the holder Assy 3 is unlocked. (Fig. 1 - Fig. 4) j The slider 4 slides in arrowdirection, and the holder Assy 3 moves down to the MAIN board side (downward). (Fig. 4) j When a disc lowers, the open/close detect switch (S809) turns on. (Fig. 1) j The Wake-up mo

26、de becomes active and the power circuit starts to operate. a b 5 When a disc is unloaded. Open the shutter 1. (Fig. 5) j The slider 2 slides in arrowdirection, and the holder Assy 3 moves up. (Fig. 6, Fig. 8) j When a disc rises, the open/close detect switch (S809) turns off. (Fig. 5) j The optical

27、block 4 moves in arrowdirection (inward). (Fig. 5) j The disc 6 is pushed out by the Eject lever 5 and ejected from the holder Assy 3. (Fig. 7) j The Sleep mode becomes active and the power supply stops. a b b open/close detect switch (S809) eject lever 5 shutter 1 Disc ejection. 6 OFF (Fig. 5) opti

28、cal block 4 a eject lever 5Unlock slider 2 (Fig. 6) eject lever 5 Lock slider 2 Disc ejection. 6 (Fig. 7) a slider 2 (Fig. 8) holder assy 3 UP 6 SECTION 2 GENERAL A I B C D E F G H J Parts and controls The Player 1 i (earphones) jack 2 DIGITAL SOUND PRESET switch 3 VOL (volume) +/ button 4 Battery c

29、ompartment (at the bottom) 5 Mini-disc loading shutter (EJECT) 6 HOLD (Locking the control) switch 7 AVLS (Automatic Volume Limiter System) NORM/LIMIT switch 8 Mini-disc control button 9 Terminals for charging stand (at the bottom) 1 Earphones Can be replaced with optional earphones. 2 Stereo mini p

30、lug 3 HOLD (Locking the control) switch 4 X (pause) button 5 PLAYMODE button 6 DISPLAY button 7 x (stop) button 8 Control To play, press towards N/ during stop. Press towards N/ during play to search the beginning of the succeeding track; hold in this position to fast-foward. Press towards .during p

31、lay to search the beginning of the preceding track; hold in this position to rewind. 9 VOL (volume) +/ button q; Display window 1 4 5 6 7 8 9 2 3 The earphones with a remote control This section is extracted from instruction manual. 7 This set can be disassemble in the order shown below. SECTION 3 D

32、ISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. PANEL ASSY, REAR Panel Assy, Rear Set Front Panel Section Shutter Section MD Mechanism Deck (MT-MZE800-170) Display Panel, Liquid Crystal (LCD901) Main BoardOP Service Assy (LCX-2E) “Motor, DC SSM17A/C-NP (Spindle) (M901

33、)”, “Motor, DC (Sled) (M902)” Holder Assy 2claw 3lid, battery case holder assy LCD flexible board 4two MI screws (1.4) 5panel assy, rear 4two MI screws (1.4) 1Open the battery case lid. Note: In removing or mounting the rear panel, insert a disc into the mechanism deck so as to keep the holder Assy

34、in down position. Note: In mounting the rear panel assy, take care not to get entangled with the LCD flexible board. 8 FRONT PANEL SECTION SHUTTER SECTION 1Open the shutter block assy in the direction of arrow A. 3boss 2convex portion of screw hole two claws 4front panel section knob (BASS BOOST) kn

35、ob (AVLS) knob (HOLD) two claws knob (HOLD) knob (AVLS) knob (BASS BOOST) 3boss 2convex portion of screw hole S806 S808 S807 Note on installation front panel section: When mounting, shift S806, S807, and S808 in the arrow B direction, then shift the knobs (AVLS), (BASS BOOST), and (HOLD) in the arro

36、w C direction so as to adjust each knob and switch position. Note: Claws (4 pcs) are very fragile and require careful handling. A B C Note: Do not apply an excessive force when removing an adhesive sheet (FPC) from the bracket (FPC). LCD flexible board mounting method. Meeting with the screw holes (

37、2 pcs) and claws (4 pcs), mount the LCD flexible board and bend it into S shape before the connector (CN801), and then fix with the sheet (flexible) as shown in the figure. sheet (flexible) screw 6screw, step 5spring, torsion bracket (FPC) 3four claws 6screw, step 1sheet (flexible) 7shutter section

38、2LCD flexible board (CN801) 4sheet (FPC), adhesive bracket (A) spring, torsion a b Torsion spring mounting method. Mount the torsion spring on the bracket (A), and hook the part to the shutter leg, and then hook the part to the bracket (A) as shown in the figure. b a 9 spring (holder), torsion brack

39、et (A) 8motor flexible board (CN551) 1MI screw (1.4 x 1.4) 2bracket (FPC) 3spring (MD), torsion 7OP flexible board (CN501) 9MD mechanism deck (MT-MZE800-170) 4screw (MD), step spring (holder), torsionspring (holder), torsion spring (MD), torsionshaft Torsion spring (holder) mounting method. 5Remove

40、the torsion spring (holder) from the bracket (A). 6 2. Hook the part in arrow B direction. 1. Pull the torsion spring (holder) in arrow A direction. A spring (holder), torsion B a a Torsion spring (MD) mounting method. 1. Let the part through in arrow C direction. Note: Place the part on the shaft o

41、f mechanism deck. 2. Hook the part to the shaft. 3. Hook the part in arrow D direction. shaftspring (MD), torsion C D b d c b b c d DISPLAY PANEL, LIQUID CRYSTAL (LCD901) MD MECHANISM DECK (MT-MZE800-170) Note: Do not open the claws (2 pcs) forcibly, as they are very fragile. 1two MI screws (1.4) 5h

42、older (LCD) 3Open the two claws. 4display panel, liquid crystal (LCD901) 2shutter 10 1screw (1.4), MI 4boss 7case, battery 5bracket (A) bracket (A) MAIN board open/close detect switch (S809) 6Remove the two solders of battery terminal (plus) assy and terminal board (minus). 3three screws (1.4), MI 8

43、MAIN board 2bracket (B) block assy Note: In mounting the bracket (A) on the MAIN board, let the part through under the MAIN board in arrow A direction, and then insert the part into the MAIN board. Note: In disconnecting the solder on the terminal board (minus) side, take care not to allow the solde

44、ring iron to touch the open/close detect switch (S809). 1three screws (1.4), MI A a b a b MAIN BOARD OP SERVICE ASSY (LCX-2E) 5bearing (N) 7OP service assy (LCX-2E) 3two screws 6screw block assy, lead 1washer (0.8-2.5) 2gear (SA) 4 11 “MOTOR, DC SSM17A/C-NP (SPINDLE) (M901)”, “MOTOR, DC (SLED) (M902

45、)” HOLDER ASSY 4motor, DC (sled) (M902) 3three screws (M1.4) 5motor, DC SSM17A/C-NP (spindle) (M901) 3two screws (M1.4) 1washer (0.8-2.5) 2gear (SA) 3holder assy 1washer (0.8-2.5) 2 12 C521 C522 02 R620 C813 + R802 R830 X801 R205 R1 C811 C204 8 5 1 4 IC802 149148578 151150460 3215211 142141140 13913

46、8136 137135134 3336394244485154565758 3235384145475053555960 MAIN Board (Component Side) TAP801 (TEST) 2 In the normal mode, turn on the HOLD switch on the set. While pressing thexkey on the set, press the following remote commander keys in the following order: N tN t.t.tN t .t N t.tXtX SECTION 4 TE

47、ST MODE Operation in Setting the Test Mode When the test mode becomes active, first the display check mode is selected. (Press thexkey once, when the display check mode is not active) Other mode can be selected from the display check mode. When the test mode is set, the LCD repeats the following dis- play. Set LCD display Remote commander LCD display When theXkey is pressed and hold down, the display at that time is held so that display can be checked. Caution: On the set having the microcomputer version 1.000, t