Nokia 3105 Servicehandbuch
RH-48
Troubleshooting — BB
CCS Technical Documentation
Page 20
©
2003 Nokia Corporation Confidential
Issue 1 11/2003
Figure 15: Interconnection diagram inside the battery pack
Charging Circuitry
The UEM ASIC controls charging depending on the charger being used and the battery
size. External components are needed for EMC, reverse polarity and transient protection
of the input to the baseband module. The charger connection is through the system con-
nector interface. The RH-48 baseband is designed to support DCT3 chargers from an
electrical point of view. Both 2- and 3-wire type chargers are supported. For the 3-wire
charger, the control line is not supported and not connected to the Baseband ASICs. See
Figure 16 for details.
size. External components are needed for EMC, reverse polarity and transient protection
of the input to the baseband module. The charger connection is through the system con-
nector interface. The RH-48 baseband is designed to support DCT3 chargers from an
electrical point of view. Both 2- and 3-wire type chargers are supported. For the 3-wire
charger, the control line is not supported and not connected to the Baseband ASICs. See
Figure 16 for details.
Figure 16: Charging circuitry
R200
V100
battery