User Guide

NSB-5

Troubleshooting Instructions PAMS Technical Documentation

Page 24 Nokia Mobile Phones Ltd. Issue 1 03/01

Figure 18: Fault Finding for Charger Failure (Cont’d)

Display information:

Not charging

Voltage at C119 is about

0.8V, power on, BSI

value 39k

Check X102, R115,

R123, C119

Voltage at C120 is about

0.5V, power on, BTEMP

value 47k

Check X101, R105,

V105, R124, C105,

R115, R123, C120

Yes

32Hz (fast charger) or 1Hz

(slow charger) at N101

(CHAPS) pin 7

Check R100, N100

N101 pin 5 & 12

same voltage as

Vbatt

Check R102, N101

voltage at N101 pin 5 &

12 rises when charger is

connected

Check N101

Check PCB

Yes