Hall Sensor Troubleshooting - Nokia NHL-2NA Series Troubleshooting Instructions

NHL-2NA

Hall sensor troubleshooting

There might be two kind of malfunction concerning Hall sensor; The out put of the Hall
sensor keeps to high or low regardless the position of the magnet.
Phone thinks grip is
open all the time
Check that magnet is
in its place and it's as
effective as specified
Measure that N380 is
properly soldered and it
has ~2.78V in pin 1. Pin
3 should be down when
magnet is not above the
component. ~1.8V
when magnet is above
it.
no
Change the N380 to a
new one and retest.
Page 50
Hall sensor
malfunction
yes
Hall sensor works
¤Nokia Corporation
CCS Technical Documentation
Phone thinks grip is
closed all the time
Issue 1 07/02