Sony MZ-E501 Service Manual
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Sony MZ-E501 Service Manual

Sony MZ-E501 Service Manual

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Download this manual See also: Operating Instructions
SERVICE MANUAL
Ver 1.2 2001. 12
With SUPPLEMENT-1
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 790 nm
Emission duration: continuous
Laser output: less than 44.6 µW*
* 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 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 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 limits
Sony Corporation
9-873-162-03
2001L1600-1
Personal Audio Company
© 2001.12
Published by Sony Engineering Corporation
MZ-E501
Model Name Using Similar Mechanism
MD Mechanism Type
Optical Pick-up Mechanism Type
SPECIFICATIONS
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 mAh
One LR6 (size AA) battery (not supplied)
External power jack: Power rating 3V DC
AC power adaptor for the battery charging stand (supplied): AC230~240V,
50Hz
Battery operation time
See "When to replace or recharge the battery"
Dimensions
Approx. 74.5 × 80.5 × 17.9 mm (w/h/d) (3 × 3
(not including projecting parts and controls)
Mass
Approx. 80 g (2.8 oz) (the player only)
Supplied accessories
Headphones/earphones with a remote control (1)
Battery charging stand (assembly needed)(1)
AC power adaptor*
Rechargeable battery (1)
Rechargeable battery carrying case (1)
Dry battery case (1)
Carrying pouch (1)
AC plug adaptor (1) (world model only)
US and foreign patents licensed from Dolby Laboratories.
Design and specifications are subject to change without notice.
PORTABLE MINIDISC PLAYER
AEP Model
Hong Kong Model
MZ-E500
MT-MZE500-174
LCX-4E
×
23
1
/
/
in.)
32
4

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  • Page 1 Wow and Flutter US and foreign patents licensed from Dolby Laboratories. Below measurable limits Design and specifications are subject to change without notice. PORTABLE MINIDISC PLAYER Sony Corporation 9-873-162-03 2001L1600-1 Personal Audio Company © 2001.12 Published by Sony Engineering Corporation...

  • Page 2: Table Of Contents

    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 WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

  • Page 3: Servicing Note

    MZ-E501 SECTION 1 SERVICING NOTES When repairing this device with the power on, if you remove the NOTES ON HANDLING THE OPTICAL PICK-UP main board, this device stops working. BLOCK OR BASE UNIT In this case, you work without the device stopping by fastening the The laser diode in the optical pick-up block may suffer electrostatic hook of the Open/Close detection switch (S809).

  • Page 4: General

    MZ-E501 SECTION 2 This section is extracted from instruction manual. GENERAL LOCATION AND FUNCTION OF CONTROLS VOL+ GROUP VOL+/– VOL– 1N> 3 Color Info-LED >N PLAYMODE RPT/ENT DISPLAY SOUND HOLD ./N> VOL +/– GROUP 3 Color Info-LED HOLD...

  • Page 5: Disassembly

    MZ-E501 SECTION 3 DISASSEMBLY Disassemble the unit in the order as shown below. Mechanism deck Bracket assy MAIN board Case assy, Holder assy Optical pick-up assy (LCX-4E) Note : Follow the disassembly procedure in the numerical order given. 3-1. CASE ASSY, HOLDER ASSY case assy 1 screws (1.4), MI...

  • Page 6: Mechanism Deck

    MZ-E501 3-2. MECHANISM DECK 1 step screw (MD) mechanism deck 6 MOTER FLEXIBLE board (CN551) 5 OP FLEXIBLE board (CN501) 2 claw 3 claw 3 claw 3-3. BRACKET ASSY 3 screw (1.7) 1 screw (1.7) 4 bracket (L) assy 2 bracket (R) assy...

  • Page 7: Main Board

    MZ-E501 3-4. MAIN BOARD 1 screw (1.7) 5 Remove the soldering 7 battery case assy 6 MAIN board 5 Remove the soldering 2 claw 4 ornamental strip 3 battery case lid case (rear) 3-5. OPTICAL PICK-UP ASSY (LCX-4E) optical pick-up assy (LCX-4E)

  • Page 8: Test Mode

    MZ-E501 SECTION 4 TEST MODE 4-1. GENERAL Remote control LCD • When entered in the TEST MODE, 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...
  • Page 9 MZ-E501 4-4. MANUAL MODE 4. During each test mode, the display is changed from one to another each time DISPLAY key is pressed. 4-4-1. Outline of the function The Manual mode is designed to perform adjustments and operational checks on the set’s operation according to each individual function.
  • Page 10 The last error that occurred. The first error from the last one. The second error from the last one. Total recording time ( – – – – is displayed for MZ-E501) • Description of the error display codes Simplified Contents of fault...
  • Page 11 MZ-E501 4-7. Sound Skip Check Result Display Mode 4-8. KEY CHECK MODE This set can display and check the error count occurring during 4-8-1. Outline of the function play. This mode is used to check to make sure that each of the keys •...

  • Page 12: Electrical Adjustments

    MZ-E501 SECTION 5 ELECTRICAL ADJUSTMENTS 5-1. GENERAL 5-4. MANUAL POWER ADJUSTMENTS In this set, CD and MO discs can be automatically adjusted by setting 5-4-1. Adjustment sequence the Overall Adjustment mode within the TEST MODE, The adjustments should be always performed in the following...
  • Page 13 MZ-E501 5-4-3. Vc PWM Duty (H) adjustment method 3. Press X key to write the adjustment value. 1. Set the Manual mode and set the item No. to 763. The adjustment completion display appears as follows. LCD display LCD display...
  • Page 14 MZ-E501 3. If NG in the overall CD adjustments, return to Reset NV and 5-5-4. Overall CD and MO adjustment items perform from the electrical offset adjustment again. 1. Overall offset adjustment Item No. Contents LCD display GRV setting • Sarvo OFF • Head UP...
  • Page 15 MZ-E501 Item No. Contents Tracking servo ON ABCD gain adjustment KF gain adjustment RF gain adjustment FCS gain adjustment TRK gain adjustment READ GRV adjustment 1 R GRV setting • servo OFF SLED move to outside Focus servo OFF TON offset adjustment...

  • Page 16: Diagrams

    MZ-E501 SECTION 6 DIAGRAMS Note on Printed Wiring Boards: MAIN SECTION WAVEFORMS • X : parts extracted from the component side. IC501 1 TE • : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

  • Page 17: Block Diagram

    MZ-E501 6-1. BLOCK DIAGRAM MAIN BOARD RF AMP,FOCUS/TRACKING ERROR AMP IC501 HEADPHONE AMP CN501 IC301 VREF VREF RF OUT AOUT L J301 PEAK PEAK PEAK BOTM RF AMP, /BOTM BOTM AOUT R IN B OUT B Jx Jy Jx FOCUS...

  • Page 18: Printed Wiring Board - Main Section (Side A)

    MZ-E501 6-2. PRINTED WIRING BOARD – MAIN SECTION (SIDE A) – MAIN BOARD (SIDE A) • Semiconductor Location Ref. No. Location D101 D201 C-10 D801 IC 301 S801 D855 D-10 D902 D903 F-10 IC 601 IC301 CSP (Chip Size Package)

  • Page 19: Printed Wiring Board - Main Section (Side B)

    MZ-E501 6-3. PRINTED WIRING BOARD – MAIN SECTION (SIDE B) – TO MOTOR FLEXIBLE BOARD OPTICAL MAIN BOARD (M901 : SPINDLE MOTOR) (SIDE B) PICK-UP (M902 : SLED MOTOR) BLOCK (LCX-4E) • Semiconductor Location Ref. No. Location D901 IC 801...

  • Page 20: Schematic Diagram - Main Section (1/3)

    MZ-E501 • See page 16 for Waveforms. • See page 25, 26 for IC Pin Function Description. 6-4. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) – OPR_LED_G_H OPR_LED_G_L OPR_LED_R_H OPR_LED_R_L TAP602...

  • Page 21: Schematic Diagram - Main Section (2/3)

    MZ-E501 6-5. SCHEMATIC DIAGRAM – MAIN SECTION (2/3) – • See page 23, 24 for IC Block Diagrams. IC B/D IC B/D C956...

  • Page 22: Schematic Diagram - Main Section (3/3)

    MZ-E501 6-6. SCHEMATIC DIAGRAM – MAIN SECTION (3/3) – • See page 23 for IC Block Diagrams. (INFO) IC B/D...

  • Page 23: Ic Block Diagrams

    MZ-E501 6-7. IC BLOCK DIAGRAMS IC301 TA2131FL (EL) BEEP V REF VREF LPF1 TC MT BST NF1 BST1 LPF2 BEEP BST2 BST NF2 OUTB BST OUT BEEP OUTA IC551 SC111257FCR2 VC VG VC VG VC VG PRE DRIVER PRE DRIVER...
  • Page 24 MZ-E501 IC901 XPC18A32FCR2 42 41 SERIAL PASS POWER STEP-UP STEP-UP REGULATOR VA SWITCH 1 PRE DRIVEER PRE DRIVEER SERIAL PASS REGULATOR VD SERIAL PASS INM1 REGULATOR VIF DTC1 XRST (INT) XRST DTC2 CRST RSTREF BANDGAP INM2 VREF REFERENCE PWM1 PWM2...

  • Page 25: Ic Pin Function Description

    MZ-E501 6-8. IC PIN FUNCTION DESCRIPTION • IC501 SN761057DBT (RF AMP, FOCUS/TRACKING ERROR AMP) Pin No. Pin Name Description Tracking error signal output to the system controller (IC601) REXT Connect terminal to the external resistor for ADIP amp control WPPLPF...
  • Page 26 MZ-E501 • IC601 CXD2671-205GA (SYSTEM CONTROL) Pin No. Pin Name Description OPR_LED_G_H High intensity green LED control (open) OPR_LED_G_L Low intensity green LED control (open) XTEST Input terminal for the test mode detection OPR_LED_R_H High intensity red LED control (open)
  • Page 27 MZ-E501 Pin No. Description Pin Name Focus error signal input AUX1 Support signal input (A/D input) Middle point voltage input ADIO Not used (open) ADRT A/D converter the upper limit voltage input — AVD2 AVDD — AVS2 AVSS ADRB A/D converter the lower limit voltage input...
  • Page 28 MZ-E501 Pin No. Description Pin Name — DSPVDD2 Power supply (for DSP block) DSPVSS1 — Ground (for DSP block) SPCU Brushless spindle motor drive comparison signal input (U) SPCV Brushless spindle motor drive comparison signal input (V) SPCW Brushless spindle motor drive comparison signal input (W) SRDR/SL1F Sled servo drive PWM signal output (–)
  • Page 29 MZ-E501 Ver 1.2 2001.12 Pin No. Description Pin Name 156, 157 TEST1, TEST0 Terminal 1, 0 for the main test EVA/FLASH chip discrimination terminal OPR LED Operation LED control (Not used in this set) SSB DATA Input/output of SSB serial data SSB CLK —...
  • Page 30 MZ-E501 Pin No. Description Pin Name LCD STB Not used (open) LCD RST Not used (open) REC LED Not used (open) LD ON Not used (open) TSB SLV CHK TSB slave check K-TAI_MON Not used (open) K-TAI_SW Not used (open) —...

  • Page 31: Exploded Views

    MZ-E501 SECTION 7 Ver 1.2 2001.12 EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • Hardware (# mark) list and accessories and The components identified by mark 0 or have some differences from the original one.

  • Page 32: Mechanism Deck Section

    MZ-E501 7-2. MECHANISM SECTION M902 M901 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-680-453-11 MOTOR FLEXIBLE BOARD 4-222-203-01 SCREW, LEAD 3-222-392-01 SCREW (M1.4), TAPPING 0 62 X-3379-869-1 OPTICAL PICK-UP ASSY (LCX-4E) 3-222-394-01 CHASSIS 3-222-391-01 SPRING (M), RACK...

  • Page 33: Electrical Parts List

    MZ-E501 SECTION 8 ELECTRICAL PARTS LIST MAIN NOTE: • Due to standardization, replacements in the • CAPACITORS: • SEMICONDUCTORS parts list may be different from the parts uF: µF In each case, u: µ, for example: specified in the diagrams or the components •...
  • Page 34 MZ-E501 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C956 1-107-820-11 CERAMIC CHIP 0.1uF R515 1-208-895-11 METAL CHIP 2.2K 0.5% 1/16W C963 1-107-820-11 CERAMIC CHIP 0.1uF R516 1-208-895-11 METAL CHIP 2.2K 0.5% 1/16W R517 1-208-895-11 METAL CHIP 2.2K...
  • Page 35 MZ-E501 Ver 1.1 2001.11 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < SWITCH > ACCESSORIES ∗∗∗∗∗∗∗∗∗∗∗∗ S801 1-786-033-11 SWITCH, TACTILE (x) S802 1-786-033-11 SWITCH, TACTILE (>N) 1-251-895-11 BATTERY CASE S803 1-786-033-11 SWITCH, TACTILE (.)
  • Page 36 MZ-E501 MEMO...
  • Page 37 MZ-E501 AEP Model Hong Kong Model SERVICE MANUAL Ver 1.2 2001. 12 SUPPLEMENT-1 Subject : 1. Schematic diagram and printed wiring board are changed. (ECN-DAB01214)
  • Page 38 MZ-E501 How to distinguish the sets Parts code of printed wiring board are changed. Before change After change Part No. Description Part No. Description 1-681-868-11 MAIN BORD 1-681-868-12 MAIN BORD Location of parts code on changed printed wiring board. MAIN BOARD...
  • Page 39 MZ-E501 SECTION 2 DIAGRAMS 2-1. BLOCK DIAGRAM MAIN BOARD RF AMP,FOCUS/TRACKING ERROR AMP IC501 HEADPHONE AMP CN501 IC301 VREF VREF R-CH L-CH RF OUT AOUT L J301 PEAK PEAK R-CH PEAK RF AMP, BOTM /BOTM BOTM IN B OUT B...
  • Page 40 MZ-E501 2-2. PRINTED WIRING BOARD – MAIN SECTION (SIDE A) – MAIN BOARD (SIDE A) • Semiconductor S801 IC 301 Location Ref. No. Location D101 C-13 IC 601 D201 C-13 D801 G-10 D855 E-13 CSP (Chip Size Package) S806 D902...
  • Page 41 MZ-E501 2-3. PRINTED WIRING BOARD – MAIN SECTION (SIDE B) – OPTICAL TO MOTOR FLEXIBLE BOARD PICK-UP (M901 : SPINDLE MOTOR) MAIN BOARD (SIDE B) BLOCK (M902 : SLED MOTOR) (LCX-4E) • Semiconductor Location Ref. No. Location IC 801 D901...
  • Page 42 MZ-E501 2-4. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) – • See page 11, 12 for IC Pin Function Description. Note on Schematic Diagram WAVEFORMS • All capacitors are in µF unless otherwise noted. • Voltages are taken with a VOM (Input imped- * Replacement of IC601 used in this set requires pF: µµF 50 WV or less are not indicated except...
  • Page 43 MZ-E501 2-5. SCHEMATIC DIAGRAM – MAIN SECTION (2/3) – • See page 9, 10 for IC Block Diagrams. IC B/D IC B/D Note on Schematic Diagram • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
  • Page 44 MZ-E501 2-6. SCHEMATIC DIAGRAM – MAIN SECTION (3/3) – • See page 9 for IC Block Diagrams. IC B/D Note on Schematic Diagram • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
  • Page 45 MZ-E501 6-7. IC BLOCK DIAGRAMS IC301 TA2131FL (EL) BEEP V REF VREF LPF1 TC MT BST NF1 BST1 LPF2 BEEP BST2 BST NF2 OUTB BST OUT BEEP OUTA IC551 SC111257FCR2 VC VG VC VG VC VG PRE DRIVER PRE DRIVER...
  • Page 46 MZ-E501 IC901 XPC18A32FCR2 42 41 SERIAL PASS POWER STEP-UP STEP-UP REGULATOR VA SWITCH 1 PRE DRIVEER PRE DRIVEER SERIAL PASS REGULATOR VD SERIAL PASS INM1 REGULATOR VIF DTC1 XRST (INT) XRST DTC2 CRST RSTREF BANDGAP INM2 VREF REFERENCE PWM1 PWM2...
  • Page 47 MZ-E501 6-8. IC PIN FUNCTION DESCRIPTION • IC501 SN761057DBT (RF AMP, FOCUS/TRACKING ERROR AMP) Pin No. Pin Name Description Tracking error signal output to the system controller (IC601) REXT Connect terminal to the external resistor for ADIP amp control WPPLPF...
  • Page 48 MZ-E501 • IC601 CXD2671-207GA (SYSTEM CONTROL) Pin No. Pin Name Description OPR_LED_G_H High intensity green LED control (open) OPR_LED_G_L Low intensity green LED control (open) XTEST Input terminal for the test mode detection OPR_LED_R_H High intensity red LED control (open)
  • Page 49 MZ-E501 Pin No. Description Pin Name Focus error signal input AUX1 Support signal input (A/D input) Middle point voltage input ADIO Not used (open) ADRT A/D converter the upper limit voltage input — AVD2 AVDD — AVS2 AVSS ADRB A/D converter the lower limit voltage input...
  • Page 50 MZ-E501 Pin No. Description Pin Name — DSPVDD2 Power supply (for DSP block) DSPVSS1 — Ground (for DSP block) SPCU Brushless spindle motor drive comparison signal input (U) SPCV Brushless spindle motor drive comparison signal input (V) SPCW Brushless spindle motor drive comparison signal input (W) SRDR/SL1F Sled servo drive PWM signal output (–)
  • Page 51 MZ-E501 Pin No. Description Pin Name 156, 157 TEST1, TEST0 Terminal 1, 0 for the main test EVA/FLASH chip discrimination terminal OPR LED Operation LED control (Not used in this set) SSB DATA Input/output of SSB serial data SSB CLK —...
  • Page 52 MZ-E501 Pin No. Description Pin Name LCD STB Not used (open) LCD RST Not used (open) REC LED Not used (open) LD ON Not used (open) TSB SLV CHK TSB slave check K-TAI_MON Not used (open) K-TAI_SW Not used (open) —...
  • Page 53 MZ-E501 SECTION 2 ELECTRICAL PARTS LIST MAIN NOTE: • Due to standardization, replacements in the • CAPACITORS: • SEMICONDUCTORS parts list may be different from the parts uF: µF In each case, u: µ, for example: specified in the diagrams or the components •...
  • Page 54 MZ-E501 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C954 1-107-820-11 CERAMIC CHIP 0.1uF R302 1-218-963-11 RES-CHIP 6.8K 1/16W C955 1-107-820-11 CERAMIC CHIP 0.1uF R303 1-218-981-11 RES-CHIP 220K 1/16W C956 1-107-820-11 CERAMIC CHIP 0.1uF R501...
  • Page 55 MZ-E501 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < COMPOSITION CIRCUIT BLOCK > RB301 1-233-970-11 RES, NETWORK (CHIP TYPE) 33K RB302 1-233-966-11 RES, NETWORK (CHIP TYPE) 6.8K RB551 1-233-959-11 RES, NETWORK (CHIP TYPE) 470...
  • Page 56 MZ-E501 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2001.12...

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