NorthStar Navigation Explorer 538i - Manual (Page 58)

Northstar Explorer 538i/538 Installation and Operation Manual 58
1-1 The Explorer 538/538i won’t turn on:
a The Explorer 538/538i is designed to operate
on a 12 volt battery system, where the
voltage may vary from 10 to 16 volts. If an
excessive voltage is supplied, a fuse will be
tripped, turning the display unit off. Check
the fuse.
b Check that the power cable connector at the
back of the display unit is securely plugged
in and the collar is locked in place. The collar
must be secure for watertight connection.
c Measure the battery voltage while the battery
is under load - turn on some lights, radio or
other electrical equipment connected to the
battery. If the voltage is less than 10 volts:
- the battery terminals or wiring on the
terminals may be corroded.
- the battery may not be charging
correctly or may need replacing.
d Inspect the power cable from end to end for
damage such as cuts, breaks, squashed or
trapped sections.
e Ensure that the red wire is connected to the
positive battery terminal and the black wire
to the negative battery terminal. If wired for
the Auto Power option, ensure the yellow
wire is connected to the ignition circuit. Also
check the boat’s main switch circuit (see
section 15-4).
This troubleshooting guide is written with
the assumption that the user has read and
understood the relevant sections in this manual.
It is possible in many cases to solve difficulties
without having to send the display unit back to
the manufacturer for repair. Please follow this
troubleshooting section before contacting the
nearest Northstar dealer.
There are no user serviceable parts. Specialized
methods and testing equipment are required
to ensure that the display unit is reassembled
correctly and is waterproof. Users who service the
product themselves will void the warranty.
Repairs to the product may only be carried out
by a service centre approved by Northstar. If the
product must be sent into a service centre for
repair, it is essential to send in the transducer(s) at
the same time.
More information can be found on our Website:
www.Northstarnav.com.
f Check for corrosion on the power cable
connector and clean or replace if required.
g Check fuses that are placed in line with the
power cable. A fuse can be blown despite
appearing to be good or the fuse may be
corroded. Test the fuse or replace it with a
fuse known to be good.
1-2 The Explorer 538/538i won’t turn off:
The Explorer 538/538i may have been wired
for Auto power. In this case, the Explorer
538/538i cannot be turned off while the
ignition power is on (see section 2-3).
1-3 If the Explorer 538/538i beeps when
turned on but nothing is displayed:
The Explorer 538/538i may be operating, but
the backlight settings may have been set too
low (see section 2-4).
1-4 The wrong language is displayed:
See section 14-1.
Appendix B - Troubleshooting
B-1 General Problems