Charger Failure - Nokia NSB-1 Series Troubleshooting Instructions

PAMS
Technical Documentation

Charger failure

Nothing happens when charger is connected
Voltage level at pin 60 of CCONT (N100)
is higher than 0.4 V when charger is con-
nected
32 Hz square wave frequency at pin 7 of CHAPS (N110)
Voltage levels at pins 5 and 12 of CHAPS (N110)
are same as VBAT
Voltage levels at pins 5 and 12 of CHAPS (N110)
rises when charger is connected
Original 06/98
YES
YES
Check N100
Display Information: Not charging
YES
Voltage level at pin 62 of CCONT (N100)
is about 0.8 V (BSI –resistor 39K) when
power is connected
Depends about BSI resistor value
YES
Voltage level at pin 63 of CCONT (N100)
is about 0.5 V when power is connected
BTEMP resistor value should be 47 k
YES
YES
YES
Troubleshooting Instructions
Check
NO
X131, F100, L109
R127,R134,R146,
C140
Check
NO
X101, R107
Check
NO
X101, R107
NO
Check
N100
NO
Check
R109, N110
Check
NO
N110
NSB–1/3
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