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Sony MD Walkman MZ-E33 Service Manual

Portable minidisc player
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Download this manual See also: Service Manual, Operating Instructions
SERVICE MANUAL
Ver 1.1 1999. 01
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
System
Audio 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 aperture.
Revolutions
400 rpm to 900 rpm (CLV)
Error correction
Advanced Cross Interleave Reed Solomon Code (ACIRC)
Sampling frequency
44.1kHz
Coding
Adaptive TRansform Acoustic Coding (ATRAC)
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 limit
Outputs
Headphones : stereo mini-jack, maximum output level 5mW+5mW,
load impedance 16 ohm
MICROFILM
Model Name Using Similar Mechanism
MD Mechanism Type
Optical Pick-up Mechanism Type
SPECIFICATIONS
General
Power requirements
One LR6 (size AA) alkaline battery (not supplied)
Ni-MH rechargeable battery NH-9WM/NH-14WM
(not supplied)
R-6 sized Ni-MH rechargeable battery NH-MDAA (supplied)
Sony AC Power Adaptor AC-MZR55 (supplied) connected at the
DC IN 3V jack
Battery operation time
Batteries
LR6 (SG) (size AA)
Sony alkaline battery
R-6 sized Ni-MH
rechargeable battery
NH-MDAA
Chewing gum type
Ni-MH rechargeable
battery NH-14WM
Chewing gum type
Ni-MH rechargeable
battery NH-9WM (N)
Dimensions
Approx. 80 17.3
(3
/
/
1
4
11
16
not including projecting parts and controls
PORTABLE MINIDISC PLAYER
MZ-E33
US Model
Canadian Model
AEP Model
E Model
MZ-E55
MT-MZE55-150
ODX-1A/1B
Playback
Approx. 9.5 hours
Approx. 8 hours
Approx. 7 hours
Approx. 6.5 hours
92 mm (w/h/d)
3
/
in.)
5
8
– Continued on next page –

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Summary of Contents for Sony MD Walkman MZ-E33

  • Page 1 Wavelength : =790 nm R-6 sized Ni-MH rechargeable battery NH-MDAA (supplied) Emission duration : continuous Sony AC Power Adaptor AC-MZR55 (supplied) connected at the Laser output : less than 44.6 W* DC IN 3V jack Battery operation time * 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.

  • Page 2: Table Of Contents

    Mass TABLE OF CONTENTS Approx. 113 g (4.0 oz.) the player only Approx. 155 g (5.5 oz.) incl. a premastered MD and a Sony 1. SERVICING NOTE ............3 alkaline LR6 (SG) battery Supplied accessories 2. GENERAL AC power adaptor AC-MZR55 (1) ...............

  • Page 3: Servicing Note

    SECTION 1 SERVICING NOTE 1. When repairing this de vice with the po wer on, if you remo ve the main boar d, this de vice stops w orking. In this case , you w ork without the de vice stopping b y fastening the hook of the DOOR OPEN/CLOSE s witc h (S801) with tape .

  • Page 4: General

    SECTION 2 GENERAL This section is extracted from instruction manual. – 4 –...

  • Page 5: Disassembly

    SECTION 3 DISASSEMBLY • The equipment can be removed using the following procedure. Bottom panel assy Main board Upper panel assy Main board MD assy OP service assy Note : Follow the disassembly procedure in the numerical order given. 3-1. BOTTOM PANEL ASSY Note : When installing, fit the knobs and switches.

  • Page 6: Main Board

    3-3. MAIN BOARD 4 step screw 3 precision pan (MD) screw (M1.4) 2 precision pan 5 toothed lock screw (M1.4) screw 1 battery case lid 9 MAIN board 7 CN501 8 CN551 3-4. MD ASSY 3-5. OP SERVICE ASSY 1 claw 3 MD assy 3 main shaft 2 OP service assy...

  • Page 7: Test Mode

    SECTION 4 TEST MODE Outline Configuration of Test Mode • In this set, overall adjustment mode is made a vailab le b y enter - The test mode has the configuration given belo ing test mode to perform automatic adjustment of CD and MO. In the overall adjustment mode, the disc is determined whether + key Overall...
  • Page 8 2. Description of Each Mode (See page 7.) 010 Offset adjustment Mode Description FE offset TE offset ” key p key MO adjustment All servo ON 0 3 0 020 Laser power adjustment 031 to 039 Mode Description p key MO power A ”...
  • Page 9 060 Sled movement Audio Mode ” • Enter the test mode and press the VOL – ke y. Then, press the Mode Description key and the VOL + ke y in this turn to enter audio mode Sled in • When entering another mode , ref er to the configuration of test Sled out 5 mode.
  • Page 10 Power Mode Char ge status code (fir st digit) ” • Enter the test mode and press the VOL – ke y. Then, press the Code Description key and the VOL – ke y in this turn to enter po wer mode .

  • Page 11: Electrical Adjustments

    1. Enter the test mode and press the VOL + ke y to enter o verall adjustment mode. MO FE balance 2. Insert the test CD (TGYS-1) or SONY MO disk (recorded) com- MO ABCD gain mer ciall y a vailab le. MO focus gain 3.
  • Page 12 * Remote commander display during automatic adjustment 0 5 7 Adjustment value (flashing) Mode No. under adjustment 4. If result of automatic adjustment is OK, the following display appears. End-OK 5. If result of automatic adjustment is NG, the following display appears.

  • Page 13: Diagrams

    SECTION 6 DIAGRAMS 6-1. IC PIN DESCRIPTION • IC801 RU6815MF-0004 (SYSTEM CONTROL) Pin No. Pin Name Pin Description HIDC MON HIDC voltage monitor input. UREG MON Unreg voltage monitor input. CHG MON CHG voltage monitor input. VREF Reference voltage for power supply voltage adjustlment. PLAY KEY Set PLAY key input.
  • Page 14 Pin No. Pin Name Pin Description CHG CONT CHG control signal output. CHG PWR CHG power supply voltage control signal output. — Digital power supply (+2.8V). — Power for on board light. — Digital ground. SLD 1R CON Sled motor control signal output. SLD 1F CON Sled motor control signal output.

  • Page 15: Block Diagram

    MZ-E33 6-2. BLOCK DIAGRAM – 15 – – 16 – – 17 –...

  • Page 16: Printed Wiring Board

    MZ-E33 6-3. PRINTED WIRING BOARD • Semiconductor Location Ref. No. Location D351 H-11 D352 H-11 D801 D-16 D841 D901 D902 H-14 D903 D905 D1001 H-16 IC301 IC302 IC501 B-13 IC551 G-14 IC552 H-12 IC601 C-15 IC603 B-16 IC801 F-16 IC802...

  • Page 17: Schematic Diagram

    MZ-E33 6-4. SCHEMATIC DIAGRAM • Refer to page 25 for IC Block Diagrams. • Waveforms (MODE:PLAY) * : The electrical components differ according to the version of the system control IC (IC801). When replacing the IC801, check its model name and add or remove D1001 and/or R1001 as shown below.
  • Page 18 • IC Block Diagrams IC301 BA3577FS-E2 IC552 TLC372CPWR IC802 AK93C55AV-L IC551 MPC17A55FTA IC501 SN761054 RF IN VREF EF BLANCE/ POWER VREF OUT GENERATOR EXCHANGE RF OUT TRACKING-ERROR BIAS IN ABCD EXCHANGE ABCD INSTRUCTION ADDITION DECODE PRE DRIVER PRE DRIVER PRE DRIVER PRE DRIVER POWER AGND...

  • Page 19: Exploded Views

    SECTION 7 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • -XX and -X mean standardized parts, so • Accessories and packing materials are number in the exploded views are not supplied. they may have some difference from the given in the last of this parts list.

  • Page 20: Main Board Section

    7-2. MAIN BOARD SECTION MT-MZE55-150 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-212-361-02 BUTTON (OPEN) X-4950-351-1 BRACKET (B) ASSY X-4950-429-1 STRIP ASSY (B), ORNAMENT AL (BLA CK) (US) X-4950-354-1 TERMINAL ASSY , BATTER Y X-4950-503-1 STRIP ASSY (N), ORNAMENT AL (GOLD) 4-212-366-01...

  • Page 21: Mechanism Deck Section

    7-3. MECHANISM DECK SECTION (MT-MZE55-150) R1001 M902 M901 The components identified by Les composants identifiés par une mark ! or dotted line with mark. marque ! sont critiques pour la ! are critical for safety. sécurité. Replace only with part number Ne les remplacer que par une piéce specified.

  • Page 22: Electrical Parts List

    SECTION 8 MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by the parts list may be different from the they are seldom required for routine service. mark ! or dotted line with mark.
  • Page 23 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C922 1-107-826-11 CERAMIC CHIP 0.1uF L902 1-416-668-11 CHOKE COIL 10uH C923 1-127-688-21 TANT AL. CHIP 10uF 6.3V L903 1-414-410-21 INDUCTOR 10uH C924 1-164-156-11 CERAMIC CHIP 0.1uF < FIL TER > <...
  • Page 24 MZ-E33 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark ( + ) R818 1-216-839-11 MET AL CHIP 1/16W S805 1-771-053-21 SWITCH, KEY BOARD ( R819 1-216-853-11 MET AL CHIP 470K 1/16W S806 1-771-053-21 SWITCH, KEY BOARD (...

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