North Star GPS/WASS CHART NAGIVATOR GM9571M 사용자 설명서

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SECTION SEVEN: Troubleshooting and servicing the 957 system
957 INSTALLATION MANUAL, Revision C1
Page 59
Getting technical 
support
Contacting Northstar
After you’ve followed the instructions in this manual, if you 
need technical assistance or have any other service-related 
questions, you can contact the Northstar Service Department. 
Please be as complete and accurate as possible when describing 
the problem so that a service technician can research the 
problem and provide the quickest response. You can reach 
Northstar’s Service Department by email, fax, U.S. mail, or 
phone as described in Table 13 below. 
Northstar’s Service Department is available between 9:00 AM 
and 5:00 PM Eastern Time, Monday through Friday, excluding 
major holidays.
If you want to buy parts, or would like to request brochures or 
have product questions, contact the Northstar Sales 
Department, as described in the table below. 
NOTE:
Please have the 957’s serial number — available
on the back of the unit or on the 
OPTIONS/
SERVICE INFO
 screen — ready before contacting
Northstar’s Service Department.
Table 13: Contacting Northstar
Email:
Service: service@northstarcmc.com
Sales: sales@northstarcmc.com
Fax:
Service: 978/897-1595
Sales: 978/897-7241
Telephone:
Main number: 978/897-6600 or 800/628-4487
U.S. mail: 
30 Sudbury Road
Acton, MA 01720 USA
You can email the 
Northstar Service 
Department right from 
Northstar’s website, 
www.northstarcmc.com. 
Here, you also can 
access additional 
technical information 
under either the 
Manuals link (you can 
download manuals in 
PDF form) or Support 
links.