Empty Battery - Nokia NSW-5 Series Service Manual

PAMS Technical Documentation

Empty battery

VBAT > 3.0 V
VCHAR
VR1, VBB, VR6,
V2V
RFCEN
RFCSETTLED
RFC (VCXO)
COBBACLK
PURX
SLCLK
CCONTINT
t1
Before battery voltage voltage rises over 3.0 V CHAPS gives an initial
charge (with limited current) to the battery. After battery voltage reaches
that voltage limit the power up procedure is as described in the previous
chapters.
Anyway, if the standard charger is connected and power–up requested
from the power button, the current consumption is kept in the minimum in
the beginning because the charger output current is rather low and the
battery voltage is on the minimum limit. Thus, the phone receiver parts
and the user interface lights are not powered up immediately, but after a
short delay.
Issue 1 10/00
t2
t3
E Nokia Mobile Phones Ltd.
NSW-5
System Module UT5U
Page 21