5
DNW-A22/A22P
Purpose of this manual
This manual is the maintenance manual part1 of the digital videocassette player
DNW-A22/A22P.
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.
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, the cleaning procedure, and the
video head tip protrusion check 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.
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
Manual Structure
