Nokia 5140 Manuales De Servicio

Nokia Customer Care

System Module and User Interface

NPL-4/5

Issue 1 05/04

Copyright © 2004 Nokia Corporation. All rights reserved.

Page 31

Wv1 baseband engine has six different functional modes:

1. No supply

2. Backup

3. Acting Dead

4. Active

5. Sleep

6. Charging

In NO_SUPPLY mode, the phone has no supply voltage. This mode is due to disconnection 
of main battery and backup battery or low battery voltage level in both of the batteries.

Phone is exiting from NO_SUPPLY mode when sufficient battery voltage level is 
detected. Battery voltage can rise either by connecting a new battery with VBAT > 
VMSTR+ 

or by connecting charger and charging the battery above VMSTR+.

In BACKUP mode the backup battery has sufficient charge but the main battery can be 
disconnected or empty (VBAT < VMSTR and VBACK > VBUCOFF).

VRTC regulator is disabled in BACKUP mode. VRTC output is supplied without regula-
tion from backup

If the phone is off when the charger is connected, the phone is powered on but enters a 
state called ”Acting Dead”. To the user, the phone acts as if it was switched off. A bat-
tery-charging alert is given and/or a battery charging indication on the display is shown 
to acknowledge the user that the battery is being charged.

In the Active mode the phone is in normal operation, scanning for channels, listening to 
a base station, transmitting and processing information. There are several sub-states in 
the active mode depending on if the phone is in burst reception, burst transmission, if 
DSP is working etc.

In Active mode the RF regulators are controlled by SW writing into UEMEK’s registers 
wanted settings: