Service manual

1.4 Service Manual CNS-9701
1. GENERAL
Maintenance Equipments
and Tools
Service Policy, Service Parts and Patient Safety Checks
Service Policy Our technical service policy for this monitor is to replace the faulty unit, board or
part or damaged mechanical part with a new one. Do not perform electrical device
or component level repair of the multilayer board or unit. We do not support
component level repair outside the factory for the following reasons:
• Most of the boards are multilayer boards with surface mount electrical
devices, so the mounting density of the board is too high.
• A special tool or high degree of repair skill is required to repair the multilayer
boards with surface mount electrical devices.
Only disassemble the monitor or replace a board or unit in an environment where
the monitor is protected against static electricity.
As background knowledge for repair, pay special attention to the following:
• To reduce the repair time, consider the problem before starting repair.
• To clarify the source of the troubles, use the information from the diagnostic
check function of the monitor and the information described in the
troubleshooting section.
Refer to “Replaceable Parts List” of this manual for the service parts for technical
service that we provide.
NOTE
When ordering parts or accessories from your Nihon Kohden
representative, please quote the NK code number and part name
which is listed in this service manual, and the name or model of the
unit in which the required part is located. This will help us to
promptly attend to your needs. Always use parts and accessories
recommended or supplied by Nihon Kohden Corporation to assure
maximum performance from your monitor.
Test equipment
When repairing or calibrating the monitor, the following test equipment is required.
• Digital voltmeter: standard type (An oscilloscope can be used instead of the
digital voltmeter.)
Service Parts