Sony DNW-A30 User manual

DIGITAL VIDEOCASSETTE PLAYER
DNW-A30/A30P
DNW-30/30P
MAINTENANCE MANUAL Part 1
1st Edition
Serial No. 10001 and Higher (DNW-A30)
Serial No. 10001 and Higher (DNW-A30P)
Serial No. 10001 and Higher (DNW-30)
Serial No. 10001 and Higher (DNW-30P)

!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
!WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden.Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen.Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
!AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.

1 (P)
Attention-when the product is installed in Rack:
1. Prevention against overloading of branch circuit
When this product is installed in a rack and is
supplied power from an outlet on the rack, please
make sure that the rack does not overload the supply
circuit.
2. Providing protective earth
When this product is installed in a rack and is
supplied power from an outlet on the rack, please
confirm that the outlet is provided with a suitable
protective earth connection.
3. Internal air ambient temperature of the rack
When this product is installed in a rack, please make
sure that the internal air ambient temperature of the
rack is within the specified limit of this product.
4. Prevention against achieving hazardous
condition due to uneven mechanical loading
When this product is installed in a rack, please make
sure that the rack does not achieve hazardous
condition due to uneven mechanical loading.

1
DNW-A30/A30P
DNW-30/30P
Table of Contents
Manual Structure
Purpose of this manual .............................................................................................. 5
Contents ..................................................................................................................... 5
Related manuals......................................................................................................... 6
1. Installation
1-1. Installation Procedure..................................................................................1-1
1-2. Supplied Accessories ..................................................................................1-1
1-3. Operating Conditions ..................................................................................1-2
1-4. Power Supply ..............................................................................................1-2
1-4-1. Voltage and Power Requirements ..............................................1-2
1-4-2. Power Cord.................................................................................1-2
1-5. Installation Space ........................................................................................1-3
1-6. Rack Mounting............................................................................................1-4
1-7. Connecting Connectors and Cables ............................................................1-9
1-8. Signal Inputs and Outputs .........................................................................1-10
1-9. Switch Settings on Connector Panel .........................................................1-11
1-10. Switch and Shorting Plug Setting on PC Boards ......................................1-12
1-10-1. APR-12 Board ..........................................................................1-12
1-10-2. APR-13 Board ..........................................................................1-14
1-10-3. DM-89 Board ...........................................................................1-16
1-10-4. TBC-23 Board ..........................................................................1-17
1-10-5. SS-63 Board .............................................................................1-18
1-11. Mode Switching of Search Dial ................................................................1-20
1-12. Setup Menu Items .....................................................................................1-21
1-13. Reference System......................................................................................1-23
1-14. Switching between 525/625 Line Systems ...............................................1-23
1-15. Settings and Adjustment when Peripheral Equipment is Connected ........1-24
1-15-1. VTR Constant Values Setting when Editor is Connected........1-24
1-15-2. System Phase Adjustment ........................................................1-24
1-15-3. Setup Menu Setting ..................................................................1-25
http://getMANUAL.com

2DNW-A30/A30P
DNW-30/30P
2. Service Overview
2-1. Notes on Power Supply Block ....................................................................2-1
2-1-1. Warning on Primary Circuit Block and Electric Shock .............2-1
2-1-2. Note on Resetting the Circuit Breaker .......................................2-1
2-2. Cleaning when the Heads are Clogged .......................................................2-1
2-3. Removal/Installation of Cabinet .................................................................2-2
2-3-1. Upper Lid, Side Panels, and Bottom Plate
Removal/Installation ..................................................................2-2
2-3-2. Control Panels Removal/Installation..........................................2-3
2-3-3. Connector Panel Assembly Removal/Installation ......................2-4
2-3-4. Power Supply Panel Assembly Removal/Installation ................2-5
2-4. Plate MD Assembly Removal/Installation ..................................................2-5
2-5. Cassette Compartment Removal/Installation ..............................................2-6
2-6. Lower Control Panel Assembly Removal/Installation................................2-7
2-7. Circuit Function ..........................................................................................2-8
2-8. Location of Main Parts ..............................................................................2-10
2-8-1. Printed Circuit Boards and Power Supply Unit Location ........2-10
2-8-2. Main Mechanical Parts Location .............................................2-13
2-9. Function and Location of Sensors .............................................................2-14
2-10. System of Cassette ....................................................................................2-16
2-11. Information of LEDs on Circuit Boards....................................................2-18
2-12. How to Take Out the Cassette when the Tape is Slacking .......................2-21
2-13. Pulling Out/Insertion of Plug-in Board .....................................................2-22
2-14. Fixtures and Adjustment Equipments List ................................................2-23
2-14-1. Equipment for Adjustment .......................................................2-23
2-14-2. Fixtures.....................................................................................2-24
2-15. ISR
(Will be available as a supplement.)
3. Error Message
3-1. Error Message .............................................................................................3-1
4. Maintenance Mode
(Will be available as a supplement.)

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DNW-A30/A30P
DNW-30/30P
5. Periodic Maintenance and Inspection
5-1. Periodic Maintenance..................................................................................5-1
5-1-1. Index...........................................................................................5-1
5-1-2. Periodic Replacement and Check Item List ...............................5-2
5-1-3. Hours Meter ...............................................................................5-3
5-2. Cleaning ......................................................................................................5-4
5-2-1. Cleaning by Cleaning Tape ........................................................5-4
5-2-2. General Information for Cleaning by Cleaning Cloth................5-4
5-2-3. Tape Running Surface of Upper Drum
and Video Heads Cleaning.........................................................5-6
5-2-4. Tape Running Surface of Lower Drum
and Lead Surface Cleaning ........................................................5-7
5-2-5. Stationary Heads Cleaning .........................................................5-8
5-2-6. Tape Running System and Tape Cleaner Cleaning....................5-9
5-2-7. Fan Motors Cleaning................................................................5-10
5-2-8. Cassette Compartment and Cassette Supports Cleaning..........5-11
6. Replacement of Plug-in Boards
(Will be available as a supplement.)
7. Spare Parts
7-1. Notes on Repair Parts..................................................................................7-1
7-2. Exploded Views ..........................................................................................7-2
7-3. Plug-in Boards.............................................................................................7-4
7-4. Packing Materials and Supplied Accessories..............................................7-5
7-5. Fixtures List ................................................................................................7-6
Appendix A Setting Check Sheet
Appendix B Block Diagrams
INDEX................................................................................................................... B-1
OVERALL (1/2).................................................................................................... B-3
OVERALL (2/2).................................................................................................... B-4

5
DNW-A30/A30P
DNW-30/30P
Purpose of this manual This manual is the Maintenance manual part1 of digital videocassette player DNW
series. DNW series include the following models .
DNW-A30/A30P
DNW-30/30P
This manual is intended for use by trained system and service engineers, and
provides the information that is required to install, maintenance information, and the
information for service such as replacement of plug-in boards.
Note: The figure in this manual is the DNW-A30 unless otherwise specified.
Contents This manual is organized by following sections.
Section 1 Installation
Explains the information that is required to install (environment, connection infor-
mation, initial setting, etc.) .
Section 2 Service Overview
Explains fundamental area of the information that is required to service , (removal of
cabinet and cassette compartment, the functions of printed circuit board, the loca-
tions of main part, fixture and measuring equipment information, notes, etc.) , the
measures against trouble and ISR (Interactive Status Reporting).
Section 3 Error Message
Explains the error messages.
Section 4 Maintenance Mode
Explains each menu of the maintenance mode.
Section 5 Periodic Maintenance and Inspection
Explains the recommended periodic maintenance, and the cleaning procedure.
Section 6 Replacement of Plug-in Boards
Explains how to replace the plug-in board and how to adjust and check after replace-
ment.
Section 7 Spare Parts
Describes the spare parts list and the exploded view for the service parts of this unit,
and the packing materials and supplied accessories list.
Manual Structure

6DNW-A30/A30P
DNW-30/30P
Appendix A Setting Check Sheet
The sheet is used for checking the setup conditions such as switch, setup menu under
the application.
Appendix B Block Diagrams
Describes the overall block diagrams
Related manuals Besides this “Maintenance manual part 1”, the following manuals are available for
digital videocassette player DNW series.
• Operation Manual Part 1 (Supplied with the DNW.)
This manual is necessary for application and operation (and installation) of the DNW.
• Maintenance Manual Part 2 (available on request )
This manual describes the information that premises the parts level service
(adjustments, board layouts, schematic diagrams, detailed parts list, etc.) for this
unit.
If this manual is required, please contact to Sony’s service organization.
• Protocol Manual of Remote (9-pin) Connector (available on request)
This manual explains the protocol for controlling the VTR via the RS-422A (9-pin
serial remote) .
If this manual is required, please contact to Sony’s service organization.