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MDS-NT1
SERVICE MANUAL AEP Model
UK Model
Ver 1.0 2002.02
E Model
Model Name Using Similar Mechanism NEW
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
MD Mechanism Type MDM-7S2B
Optical Pick-up Name KMS-262E
• OpenMG, “MagicGate”, “MagicGate Memory
Stick”, “Memory Stick”, VAIO, MusicClip, Net MD,
SPECIFICATIONS
and their logos are trademarks of Sony Corporation.
•“WALKMAN ” is a trademark of Sony Corporation.
• Microsoft, Windows, Windows NT and Windows Me-
Syst
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MDS-NT1 SELF-DIAGNOSIS FUNCTION The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes which show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box in the instruction manual. For details on how to check error codes during servicing, refer to the following “Procedure for using the Self-Diagnosis Function (Error History Display Mode
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MDS-NT1 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Selecting the Test Mode Display Details of History op rec tm Cumulative recording time is displayed. When cumulative recording time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, “Under 1 min” is displayed. The displayed time shows how long the laser is in high power state. It is about one fourth the actual recording time. op play tm Cumulative playing time is displayed. When cumulative pla
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MDS-NT1 Table of Error Codes Error Code Details of Error 10 Loading failed 12 Loading switch combination is illegal 20 Head of PTOC could not be read within the specified time 21 Head of PTOC could be read but its content is erroneous 22 Access to UTOC could not be made within the specified time 23 UTOC could be not read within the specified 3time 24 Content of UTOC is erroneous 30 Playing could not start 31 Content of sector is erroneous 40 Cause of retry occurred during normal recording 41 D-R
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MDS-NT1 TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION ........................... 2 1. SERVICING NOTES ............................................... 7 2. GENERAL ................................................................... 12 3. DISASSEMBLY 3-1. Disassembly Flow ........................................................... 13 3-2. Case (Upper) ................................................................... 14 3-3. Main Board .............................................................
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MDS-NT1 The laser component in this product CAUTION is capable of emitting radiation Use of controls or adjustments or performance of procedures exceeding the limit for Class 1. other than those specified herein may result in hazardous ra- diation exposure. Notes on chip component replacement • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be dam- aged by heat. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER Flexib
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MDS-NT1 SECTION 1 SERVICING NOTES NOTES ON REPLACING BD BOARD OR MD MECHANISM NOTES ON HANDLING THE OPTICAL PICK-UP DECK BLOCK OR BASE UNIT In replacing the BD board or MD mechanism deck, perform the The laser diode in the optical pick-up block may suffer electro- work through the steps provided below: static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human 1. Remove the IC195 from the BD board to be replaced. bo
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MDS-NT1 JIG FOR CHECKING BD BOARD WAVEFORM The special jig (J-2501-149-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be performed are shown as follows. GND : Ground I+3V : For measuring Iop (Check the deterioration of the optical pick-up laser) Iop : For measuring Iop (Check the deterioration of the optical pick-up laser) TE : Tracking error signal (Traverse adjustment) VC : Reference level for checking the signal RF : RF signal (Check j
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MDS-NT1 Note 1:The test mode and recording of this set are controlled by a personal computer, thus requiring the set to be connected to the PC. Prepare the personal computer in which necessary software is already installed. • Attached software “OpenMG Jukebox” (necessary for recording (check in, check out)) (Part No. : 4-237-880-01) • Software for test mode “TestMode_S.exe” (“TestMode_S.exe” and essential files “data_files.csv”, “Net MDUSB.dil” are distributed to- gether with the Service Manual.
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MDS-NT1 CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS IN MD Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5. Electrical Adjustments”. Note: This set uses optical pick-up KMS-262E in the production, but for the repair, only the KMS-262A is supplied. As a result, two types of optical pick-ups are used for this set, and the specified values for the check and adjustment of the laser po
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MDS-NT1 SERVICE MODE Microcomputer Version Display Procedure: 1. Press the [B/> ] button and [x ] /Z button until the NetMD indicator turns off (for more than 3 seconds). (During this step, the USB cable must be disconnected) 2. Connect the set to the PC with the attached USB cable. 3. Start up the software for test mode. 4. Click the [TEST MODE]. 5. Enter the test mode, then click the [JOG UP] or [JOG DOWN] to display “ ”, and click the [ENTER/YES]. 6. “NT1-V**
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MDS-NT1 SECTION 2 This section is extracted from instruction manual. GENERAL • LOCATION OF CONTROLS – Front View – – Rear View – This chapter tells you about the location and function of the various buttons, controls on the MD deck. 13 2 1 6 5 4 1N/> button 5 Net MD lamp 4 3 2 Press while the unit is stopped to start playback. Indicates the USB connection status between the Press while the unit is playing to locate the unit and the computer. 1 DC IN 9V jack beginning of the next track. Lights
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MDS-NT1 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW Note: The process described in can be performed in any order. Note: Without completing the process described in , the next process can not be performed. SET 3-2. CASE (UPPER) (Page 14) 3-4. MD MECHANISM DECK 3-3. MAIN BOARD (MDM-7S2B) (Page 15) (Page 15) 3-5. FRONT PANEL SECTION 3-6. BD (MD) BOARD 3-6. BD (MD) BOARD (Page 16) (Page 16) (Page 16) 3-7. HOLDER ASSY 3-6. OVER WRIT
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MDS-NT1 Note: Follow the disassembly procedure in the numerical order given. 3-2. CASE (UPPER) Note 1: Fold down the flat type wire (7 core) in the direction of the arrow at the first setout, then install the upper case. wire (flat type) (7 core) 2 case (upper) wire (flat type) (7core) 1 three screws (BVTP3 × 10) 1 three screws (BVTP3 × 10) lead wire Note 2: Check that the lead wire is connected vertically to the chassis before installing the upper case. If the lead wire is not connected verti
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MDS-NT1 3-3. MAIN BOARD 1 wire (flat type) (23 core) (CN102) 1 wire (flat type) (27 core) 1 wire (flat type) (7 core) (CN101) (CN104) 3 screw 3 screw (BVTP3 × 8) (BVTP3 × 8) 4 MAIN board 2 screw (BVTT3 × 8) 3-4. MD MECHANISM DECK (MDM-7S2B) 1 wire (flat type) (23 core) (CN102) 2 four screws (BVTTWH M3) 1 wire (flat type) (27 core) (CN101) 3 MD mechanism deck (MDM-7S2B) 15
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MDS-NT1 3-5. FRONT PANEL SECTION 1 wire (flat type) (7 core) 4 two screws (CN104) (BVTT3 × 5) 5 front panel section wire (flat type) (7 core) Note: Set the wire (flat type) as illustrated, 2 lead wire then install the front panel section. 3 two screws (K3 × 8) 3-6. BD BOARD, OVER WRITE HEAD (HR901) Note: By means of removing 1 connector (CN104), BD board can be removed without removing 2 screw (P1.7 × 6) the over write head (HR901). 3 over write head (HR901) Note: The over write head (HR9
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MDS-NT1 3-7. HOLDER ASSY 2 claw 3 6 holder assy 5 4 boss 4 boss 1 tension spring (holder) 3-8. LOADING MOTOR ASSY (M103) 1 belt (loading) 2 two screws (PWH1.7 × 2.5) 3 loading motor assy (M103) 17
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MDS-NT1 3-9. SLED MOTOR ASSY (M102) 3 5 With holding the claw, 4 slider (EJ) slide the slider fully in the direction of arrow A. A 8 lever (head) 6 slider 2 guide (L) 1 two screws (B2 × 6) 9 two screws 7 lever (CHG) (PWH1.7 × 2.5) 0 sled motor assy (M102) 3-10. OPTICAL PICK-UP (KMS-262E) qa optical pick-up (KMS-262E) 7 Pull out the main shaft. 1 flexible board 0 SL base 9 screw (P1.7 × 6) 6 two screws 8 (KTP2 × 6) 4 screw (B2 × 6) 5 base (BU-A) 3 gear (SD) 2 screw (M1.7) 18
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MDS-NT1 3-11. SPINDLE MOTOR ASSY (M101) 2 spindle motor assy (M101) 1 three screws (M1.7) 19
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MDS-NT1 SECTION 4 TEST MODE Note 1:The test mode and recording of this set are controlled by a personal computer, thus requiring the set to be connected to the PC. Prepare the personal computer in which necessary software is already installed. • Attached software “OpenMG Jukebox” (necessary for recording (check in, check out)) (Part No. : 4-237-880-01) • Software for test mode “TestMode_S.exe” (“TestMode_S.exe” and essential files “data_files.csv”, “Net MDUSB.dil” are distributed to- gether wi
