sony_MZ-R501_service_manual 维修电路图.pdf

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1、1 MZ-R501/R501PC SERVICE MANUAL Model Name Using Similar MechanismMZ-R500 Mechanism TypeMT-MZR500-172 Optical Pick-up NameLCX-4R System Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm Emission duration: continuous Laser output: less tha

2、n 44.6 W (This output is the value measured at a distance of 200 mm from the lens surface on the optical pick-up block with 7 mm aperture.) Recording and playback time When using MDW-80 Maximum 160 min. in monaural Maximum 320 min. in stereo Revolutions 350 rpm to 2,800 rpm (CLV) Error correction AC

3、IRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Sampling rate converter Input: 32 kHz/44.1 kHz/48 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding) ATRAC3-LP2 ATRAC3-LP4 SPECIFICATIONS Modulation system EFM (Eight to Fourteen Modulation) Number of channels 2 stereo

4、channels 1 monaural channel Frequency response 20 to 20,000 Hz 3 dB Wow and Flutter Below measurable limit Inputs Line in: stereo mini-jack, minimum input level 49 mV Optical (Digital) in: optical (digital) mini- jack Outputs i: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 o

5、hm General Power requirements Sony AC Power adaptor connected at the DC IN 3 V jack 120 V AC, 60 Hz (US, Canadian model) 230 V AC, 50/60 Hz (AEP model) 230 240 V AC, 50 Hz (UK model) 100 240 V AC, 50/60 Hz (E model) 220 V AC, 50 Hz (Chinese, Argentina model) One LR6 (size AA) alkaline dry battery (n

6、ot supplied) Continued on next page US Model Canadian Model AEP Model UK Model Chinese Model MZ-R501 E Model East European Model MZ-R501/R501PC US and foreign patents licensed from Dolby Laboratories. Ver 1.0 2001. 01 PORTABLE MINIDISC RECORDER Ver 1.1 2002. 03 Sony Corporation Personal Audio Compan

7、y Published by Sony Engineering Corporation 9-873-408-02 2002C0400-1 2002. 03 Photo: Silver 收音机爱好者资料库 Ra d i o Fa n s .CN 2 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 b

8、oard (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 damaged by heat. CAUTION Use of controls or adjustments or per

9、formance of procedures other than those specified herein may result in hazardous radiation exposure. Battery operation time Battery life1)(Unit: approx.hours) (JEITA2) LR6 (SG) alkaline dry battery3)NormalLP2LP4 Recording4)7.51013.5 Playback364248 1)The battery life may be shorter due to operating c

10、onditions, the temperature of the location, and varieties of batteries. 2)Measured value by the standard of JEITA (Japan Electronics and Information Technology Industries Association). 3)When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). 4)To prevent interrupted recording

11、 due to drained battery, use new battery for recording operations. Dimensions Approx. 83.0 27.8 75.8 mm (w/h/d) (3 3/8 1 1/8 3 in.) without projections. Mass Approx. 113 g (4.0 oz) the recorder only Supplied accessories AC power adaptor (except R501: US, Canadian, E model) (1) Headphones/earphones (

12、1) Optical cable (except R501: US, E model) (1) Design and specifications are subject to change without notice. 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 THESE C

13、OMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. MZ-R501/R501PC Ver 1.1 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 L

14、A SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL 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 Looking at the Controls . 5 3.DISASSEMBLY 3-1. Case (Lower) Assy . 6 3-2. Cas

15、e (Upper) Assy . 6 3-3. LCD Module . 7 3-4. Main Board . 7 3-5. MD Mechanism Deck . 8 3-6. Service Assy, OP . 8 3-7. Holder Assy. 9 3-8. Motor Flexible Board . 9 3-9. DC Motor (M602) . 10 3-10. DC Motor (M601), DC Motor (M603) . 10 4.TEST MODE 4-1. Outline.11 4-2. Setting Method of Test Mode. 11 4-3

16、. Operation in Setting the Test Mode.11 4-4. Releasing the Test Mode .11 4-5. Configuration of Test Mode . 12 4-6. Manual Mode . 12 4-7. Overall Adjustment Mode . 13 4-8. Self-Diagnosis Result Display Mode . 13 4-9. Reset the Error Display Code. 14 4-10. Sound Skip Check Result Display Mode . 15 4-1

17、1. Key Check Mode.15 TABLE OF CONTENTS 5.ELECTRICAL ADJUSTMENTS 5-1. Outline.17 5-2. Precautions for Adjustment .17 5-3. Adjustment Sequence . 17 5-4. NV Reset .17 5-5. Power Supply Manual Adjustment. 18 5-6. Temperature Correction. 19 5-7. Laser Power Check .19 5-8. Overall Adjustment Mode . 20 5-9

18、. Mode Settings .22 5-10. Resume Clear . 23 6.DIAGRAMS 6-1. IC Pin Function Description . 24 6-2. Block Diagram Servo Section . 30 6-3. Block Diagram Audio Section . 31 6-4. Block Diagram System Control/Power Section .32 6-5. Printed Wiring Board Main Section . 34 6-6. Schematic Diagram Main Section

19、 (1/3) .36 6-7. Schematic Diagram Main Section (2/3) .37 6-8. Schematic Diagram Main Section (3/3) .38 7.EXPLODED VIEWS 7-1. Panel Section. 43 7-2. Chassis Section . 44 7-3. MD Mechanism Deck Section .45 8.ELECTRICAL PARTS LIST.46 MZ-R501/R501PC 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MZ-R501/R501PC SECTION

20、 1 SERVICING NOTE NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in 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 atten

21、tion 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 with care. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking i

22、t for adjustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-4R) 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 perfor

23、m mea- sures against electrostatic break-down sufficiently before the op- eration. The flexible board is easily damaged and should be handled with care. OPTICAL PICK-UP FLEXIBLE BOARD In performing the repair with the power supplied to the set, removing the MAIN board causes the set to be disabled.

24、In such a case, fix a convex part of the open/close detect switch (S806 on MAIN board) with a tape in advance. Handle the FLEXIBLE board (overwrite head) with care, as it has been soldered directly to the MAIN board. In repairing the component side of MAIN board, connect the FLEXIBLE board (overwrit

25、e head) and the MAIN board with the lead wires in advance. (See page 7) Replacement of CDX2671-204GA (IC801) used in this set requires a special tool. On the set having the microcomputer version 1.000, some adjusted values were set in the manual mode at the shipment, but these data will be cleared w

26、hen the NV is reset. Therefore, on the set having the microcomputer version 1.000, change the adjusted values following the Change of Adjusted Values immediately after the NV was reset. (See page 17) laser-tap S806 MAIN board FLEXIBLE board (Over write head) Tape panel assy, upper 5 MZ-R501/R501PC S

27、ECTION 2 GENERAL This section is extracted from instruction manual. Looking at the controls See pages in ( ) for more details. The recorder A N button (11) (13) (17) (25) B VOL +/ buttons (13) (26) C x button (11) (13) (27) D X button (11) (13) (20) (26) (29) E HOLD switch (at the rear) (9) (25) F S

28、ELECT /. buttons (16) (23) (26) ./ (search /AMS) buttons (11) (13) (26) (29) G MENU/ENTER button (16) (23) (26) H OPEN switch (9) I Display window (18) (23) J END SEARCH button (11) (26) K T MARK button (28) REC (record) button (11) (17) L i (headphones) jack (9) (25) M Battery compartment (at the r

29、ear) (8) N LINE IN (OPTICAL) jack (10) (16) O DC IN 3V jack (10) (31) A C B E D F G I J K H O N M L The displ ay window AMONO (monaural) indication BLP mode indication (17) CDisc indication Shows that the disc is rotating for recording, playing or editing an MD DMega bass indication (24). EREC indic

30、ation Lights up while recording. When flashing, the recorder is in record standby mode. FSYNC (synchro-recording) indication (18) GLevel meter (21) Shows the volume of the MD being played or recorded. HREC REMAIN/REMAIN(remaining time/tracks) indication (21) (24) Lights up along with the remaining t

31、ime of the track, the remaining time of the MD, or the remaining number of tracks. IBattery indication (9) Shows approximate battery condition. JTime display KDisc name/track name indication Lights up when labeling a disc or a track. LCharacter information display (21) (25) Displays the disc and tra

32、ck names, error messages, track numbers, etc. MPlay mode indication (23) Shows the play mode of the MD. LMK L P 2.4Digital MEGA BASS CA BD JI F GHE 6 MZ-R501/R501PC 3-1.CASE (LOWER) ASSY (Page 6) 3-2.CASE (UPPER) ASSY (Page 6) 3-4.MAIN BOARD (Page 7) 3-5.MD MECHANISM DECK (Page 8) 3-6.SERVICE ASSY,

33、OP (Page 8) 3-7.HOLDER ASSY (Page 9) SET 3-10. DC MOTOR (M601) (Page 10) 3-3.LCD MODULE (Page 7) 3-9.DC MOTOR (M602) (Page 10) 3-8.MOTOR FLEXIBLE BOARD (Page 9) DC MOTOR (M603) (Page 10) Note : This set can be disassemble according to the following sequence. SECTION 3 DISASSEMBLY 3-2. CASE (UPPER) A

34、SSY Note : Follow the disassembly procedure in the numerical order given. 3-1. CASE (LOWER) ASSY 2screw (1.7), MI 1screw (1.7), MI 3screws (1.7), MI knob (hold) 6case(lower) assy 4claw 5 1screws (1.7), MI 3case (upper) assy 2CN801 4spring (POP-L), torsion spring (POP-L), torsion chassis assy 7 MZ-R5

35、01/R501PC 3-3. LCD MODULE 3-4. MAIN BOARD 1screws (1.7x3), tapping 4LCD module claws case (upper) assy 2screws (1.7x3), tapping 3 3screws (M1.4x2), toothed lock 4screws (M1.4x2), toothed lock 7 2Remove the solders 0Remove the solder 6claw qsRemove the solder qaterminal (+), battery qdterminal (-), b

36、attery 1CN701 9MAIN board 8CN501 5screw (M1.4x2), toothed lock 8 MZ-R501/R501PC 3-5. MD MECHANISM DECK 3-6. SERVICE ASSY, OP 1 screws (1.7), MI 2 chassis assy, set boss 3 MD mechanism deck 4spring (S), rack 6spring, thrust detent 3precision pan screw (M1.4) 5precision pan screw (M1.4) 1washer (0.8 -

37、 2.5) 2gear (SA) 8Pull off the lead screw. 7 B A 9Opening the over write head toward the direction A, remove the OP Service assy toward the direction B. Note: Do not open the entire assy forcibly, when opening the over write head. over write head section 9 MZ-R501/R501PC 3-7. HOLDER ASSY 3-8. MOTOR

38、FLEXIBLE BOARD 4 Remove the holder assy to direction of the arrow B. 1 Open the holder assy. A 2 B 3 boss 2 Remove two solders of DC motor (over write head up/down) (M603). 1 Remove four solders of DC motor (sled) (M602). 3 Remove four solders of DC motor (spindle) (M601). 5 motor flexible board 4 a

39、dhesive sheet Note: Align a circular hole in the stripping paper with a circular hole in the DC motor (sled), when mounting the motor flexible board. 10 MZ-R501/R501PC 3-9. DC MOTOR (M602) 3-10. DC MOTOR (M601), DC MOTOR (M603) 4 two precision pan screws (M1.4) 5 DC motor (sled) (M602) 1 Remove four

40、 solders of motor flexible board. 2 washer (0.8 - 2.5) 3 gear (SA) 1 Remove six solders of motor flexible board. 4 three precision pan screws (M1.4) qs DC motor (over write head up/down) (M603) 6 two precision pan screws (M1.4) qa chassis assy, gear 0 screw (M1.2 1.5) 9 gear (HA) 8 gear (HB) 7 washe

41、r (0.8 - 2.5) 2 washer (0.8 - 2.5) 3 gear (HC) 5 DC motor (spindle) (M601) DC motor (over write head up/down) (M603) gear chassis assy gear (HA) 2.65 mm Note: Press-fit the gear (HA) up to the position of the DC motor (over write head up/down) (M603) as shown below. 11 MZ-R501/R501PC 2 In the normal

42、 mode, turn on the HOLD switch. While press- ing the VOL - key press the following order: tt.t.tt .t t.tXtX SECTION 4 TEST MODE 4-3. Operation in Setting the Test Mode When the test mode becomes active, first the display check mode is selected. Other mode can be selected from the display check mode. When the test mode is set, the LCD repeats the following