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Sony MZ-E25 Service Manual
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Sony MZ-E25 Service Manual

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SERVICE MANUAL
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
MICROFILM
Model Name Using Similar Mechanism
Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
PORTABLE MINIDISC PLAYER
MZ-E25
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
MT-MZE35-140
ODX-1B
NEW

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Summary of Contents for Sony MZ-E25

  • Page 1 MZ-E25 SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model Australian Model Model Name Using Similar Mechanism US and foreign patents licensed from Dolby Laboratories Licensing Corporation. Mechanism Type MT-MZE35-140 Optical Pick-up Name ODX-1B SPECIFICATIONS PORTABLE MINIDISC PLAYER...
  • Page 2 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 3 SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
  • Page 4 – 4 –...
  • Page 5 SECTION 2 DISASSEMBLY • This set can be disassembled in the order shown below. UPPER LID ASS’Y BOTTOM MAIN BOARD ORNAMENTAL MECHANISM OPTICAL PICK-UP PANEL ASS’Y BELT ASS’Y DECK SECTION (ODX-1B) (MT-MZE35-140) SECTION ASS’Y Note: Follow the disassembly procedure in the numerical order given. 2 precision screw UPPER LID ASS’Y (M1.4)
  • Page 6 MAIN BOARD 3 two screws 3 two screws (M1.4 × 2) (M1.4 × 2) 4 two precision screws (M1.4) 2 switch unit (CN801) 1 battery case lid 5 Open the MAIN board to the arrow direction. 8 MAIN board 6 flexible board (CLV) (CN551) 7 flexible board (CN501)
  • Page 7 ORNAMENTAL BELT ASS’Y 2 Expand ornamental belt ass’y in the arrow direction to remove. 1 boss 1 boss 1 boss 1 boss 1 boss 1 boss MECHANISM DECK SECTION (MT-MZE35-140) 1 two screws (MD) 2 Set chassis ass’y 3 mechanism deck section (MT-MZE35-140) –...
  • Page 8 OPTICAL PICK-UP (ODX-1B) SECTION ASS’Y 4 main shaft 1 precision screw 3 optical pick-up (ODX-1B) section ass’y 2 flexible board – 8 –...
  • Page 9 SECTION 3 TEST MODE General Configuration of TEST Mode • In the TEST mode, this set provides the Auto mode in which The TEST mode configuration of this set is as follows: both CD and MO are adjusted automatically. In the Auto mode, whether a disc is CD or MO is discriminated, then each +key adjsutment is automatically executed sequentially.
  • Page 10 2. Description of Each Mode (To page 9 ) 010 Offset Adjustment Mode Description Focus error offset Tracking error offset All servo ON LOW REF CD Adj. 0 4 0 020 Laser Power Adjustment Each time key is 041-048 pressed, Mode Description modes are switched.
  • Page 11 060 Sled Movement AUDIO Mode • Enter the TEST mode, and press VOL − key, ( key, and VOL Mode Description + key in this order to select the AUDIO mode. • To select other modes, refer to the TEST mode configuration. Sled IN Sled OUT 5 1.
  • Page 12 3 0 0 2. Insert the CD Test disc (TDYS-1) or commercially available SONY MO disc (already recorded). 3. Press ( key twice, and the CD or MO is discriminated, then UNREG Check respective items are automatically adjusted in the order as listed 3 1 0 in tables below.
  • Page 13 Adjustment in SERVO Mode • MO AUTO Adjustment 1. Select each adjusting mode following the configuration of Mode Description SERVO mode, and the lower 2 digits of mode number and the adjusted value written to the EEPROM are displayed on the Sled IN LCD.
  • Page 18 • Waveforms 6 IC601 $¡ (BCK) (Play Mode) 1 IC501 6, 7 (VI, VJ) (Play Mode) 1 V/DIV, 200 ns/DIV 500 mV/DIV, 500 ns/DIV 2.8 Vp-p Approx. 280 mVp-p 355 ns 2 IC501 0 (IA) (Play Mode) 20 mV/DIV, 1 µs/DIV 7 IC301 5 (XT1) (Play Mode) 500 mV/DIV, 20 ns/DIV Approx.
  • Page 19 • IC Block Diagrams IC301 AK4314-VF-E2 IC302 BA3577FS-E2 – 25 –...
  • Page 20 IC601 µPD63730AGC-9EU IC901 MPC1830VMEL – 26 –...
  • Page 21 IC551 MPC17A55FTA – 27 –...
  • Page 22 5-4. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC501 SN761050A (RF AMPLIFIER) Pin No. Pin Name Function 1 to 4 IE, ID, IC, IF Signal input from the optical pick-up detector AGND — Ground terminal (analog system) I-V converted RF signal I input from the optical pick-up block detector I-V converted RF signal J input from the optical pick-up block detector AVCC —...
  • Page 23 • MAIN BOARD IC801 RU6715MF-0007 (SYSTEM CONTROLLER) Pin No. Pin Name Function CHG MON Charge voltage monitor input terminal Not used (fixed at “L”) UREG MON Un-regulator voltage monitor input terminal VTEMP Temperature sensor detection signal input from the RF amplifier (IC501) VREF Reference voltage (+1.25V) input from the RF amplifier (IC501) PLAY KEY...
  • Page 24 Pin No. Pin Name Function CLV V MON Spindle servo (V) timing signal input from the optical pick-up driver (IC551) CLV W MON Spindle servo (W) timing signal input from the optical pick-up driver (IC551) CLV U CON Spindle servo (U) drive signal output to the optical pick-up driver (IC551) CLV V CON Spindle servo (V) drive signal output to the optical pick-up driver (IC551) CLV W CON...
  • Page 25 SECTION 6 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark may have some difference from the original are seldom required for routine service.
  • Page 26 (2) MECHANISM DECK SECTION (MT-MZE35-140) not supplied M902 M901 The components identified by Les composants identifiés par une mark ! or dotted line with marque ! sont critiques pour la mark ! are critical for safety. sécurité. Replace only with part num- Ne les remplacer que par une pièce not supplied ber specified.
  • Page 27 SECTION 7 MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 28 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C908 1-109-982-11 CERAMIC CHIP C909 1-135-259-11 TANTAL. CHIP 10uF 6.3V L554 1-414-400-11 INDUCTOR 22uH L555 1-412-031-11 INDUCTOR CHIP 47uH C910 1-162-970-11 CERAMIC CHIP 0.01uF L556 1-414-410-21 INDUCTOR 10uH C911 1-117-232-11 TANTALUM...
  • Page 29 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R823 1-216-857-11 METAL CHIP 1/16W ACCESSORIES & PACKING MATERIALS R825 1-216-825-11 METAL CHIP 2.2K 1/16W ******************************** R831 1-216-853-11 METAL CHIP 470K 1/16W 1-475-375-11 REMOTE CONTROL UNIT (RM-MZ35) R833 1-216-827-11 METAL CHIP 3.3K...
  • Page 30 MZ-E25 Sony Corporation 98C0590-1 Printed in Japan © 1998. 3 9-923-360-11 Personal A&V Products Company Published by Quarity Engineering Dept. – 36 – (Shibaura)