Nokia 616 Service Manual

Nokia Customer Care TF4 Technical Information
Company Confidential TFE-4/RV-1
Issue 2.0 Mar/2005 Copyright © 2005 Nokia Corporation. Page 8b-9
Company Confidential
List of Status-Change Reasons
1VBAT < V
MSTR
and VBACK > V_BU
COFF
→ Go to BACK_UP
2VBAT < V
MSTR
and VBACK < V_BU
COFF
→ Go to NO_SUPPLY
3VBAT Ê V
MSTR+
. VBACK < V_BU
COFF
→ Go to DELAY1
4VBAT > V
MSTR
. DELAY1 elapses → Go to RESET
5VBAT Ê V
MSTR+
. VBACK > V_BU
COFF
→ Go to DELAY1
6 PWRONX = '0' or VCHAR Ê VCHAR
DET+
or ALARM = '1' → Go to DELAY1
7VBAT > V
COFF+
→ Go to DELAY2
8 DELAY2 elapses → Go to DELAY3
9VBAT > C
OFF+
. DELAY3 elapses → Go to DELAY4
10 DELAY4 elapses → Go to PWR_ON
11 SLEEPX = '0' → Go to SLEEP
12 SLEEPX = '1' → Go to PWR_ON
13 VBAT Ì V
COFF-
and VBAT > V
MSTR-
→ Go to PWR_OFF
14 No change
15 VBAT > V
MSTR
→ Stay in PWR_OFF
16 PWRONX Ê detection during DELAY2 → Go to PWR_OFF
17 Watchdog elapses (approx. 100 µs) → Go to PWR_OFF
18 Thermal shutdown → Go to PWR_OFF
19 PwrKeyWatchdog (4 sec.) elapses → Go to PWR_OFF
Description of the UEM-States
The different states of the UEM are explained further below:
No supply
In the NO_SUPPLY mode the UEM has no supply voltage (VBAT < V
MSTR
and VBACK <
V_BU
COFF-
). This mode is due to the fact, that both supply voltages, the main battery and
the backup battery, are either disconnected or both discharged to a low voltage level.
The UEM will recover from NO_SUPPLY into RESET mode if the VBAT voltage level rises
above the V
MSTR+
level by either reconnecting the main battery or charge it to such level.

Nokia 616 Specifications

General

Brand	Nokia
Model	616
Category	Automobile Electronics
Language	English