Charging Problem - Nokia NHM-1 Series Troubleshooting Instructions

CCS Technical Documentation

Charging problem

START
Battery bars are
scrolling
NO
Measure
v oltage over
V100 (TVS). Is
it > 3V ?
YES
Read BTEMP
value. Is the
value close to
ambient
temperature
(~+25C) ?
YES
Read BSI value.
Is the value
close to battery
BSI value
82kohm ?
YES
Measure charge
current through
R200 with
empty battery.
Is it ~800mA
wi th ACP-1 2
charger?
YES
Retest
Issue 1 11/03
YES
Retest
Check X100,
NO
F100, L100,
V100, C100,
C101 and line.
Check X300,
NO
C309, R202,
R214, C234 and
lines. Are they
OK?
Check X300,
NO
C308, R201,
R213, C233 and
lines. Are they
OK?
NO
Check R200. Is
it OK ?
YES
Change N200
(UEM).
Recalibrate all
AD converters.
Retest.
Nokia Corporation.
Troubleshooting instructions
Change defect
part (if any).
Recalibrate
charge current
and voltage.
Retest.
Recalibrate
YES
BTEMP with
Phoenix SW.
Retest.
Change defect
part.
NO
Recalibrate
BT EMP an d
retest.
YES
Recalibrate BSI
with Phoenix
SW. Retest.
Change defect
NO
part.
Recalibrate BSI
and retest.
NO
Change defect
part.
Recalibrate
c harge curreny
an d voltage.
Retest.
NHM-1
Page 43