K850
1203-2528 rev. 1
TROUBLESHOOTING
On/Off Problems
TROU
B
L
E
S
H
O
OTIN
G
1. Customize the phone into DPY/Z
2. Startup the phone and wait for
the configuration to take place
(takes less than a minute)
3. Customize with correct CDA
4. Activate the phone
No
No
START
Connect:
Dummy Battery connected
to VBATT
Go to
Dead phone
Problems part 1
Yes
No
No
Connect a charger
No
Yes
Go to
Key problems
Yes
Go to
Dead Phone
Problems part 1
Yes
Yes
Go to
System Connector
Protection Test.
After this go to
Flash problems
Yes
Yes
No
Yes
No
Is the phone
consuming more than
1mA when the phone
is powered off
Is it possible to
power on the phone
Is the
phone consuming
any current when
powering on the
phone
Problem
solved
Is the phones
behavior as normal
Optimized
charging
Flash process
started
Flash
the phone with
ITP software
successful
Problem
solved
Is it possible to power
off the phone
Yes
Go to
Current
Consumption Test
After this go to
Charging Test.
Yes
No
Claim for a
SW Upgrade
Yes
No
No
Go to
Flash problems
No
No
Is the current
consumption between
10mA and 70mA
Press
2 and 5
Connect USB
Run Pre-config 1 and 2
Run DPY/Z
Successful
Flash
CDA Software
Flash
Successful
Flash
the phone with
correct CDA
software
Yes
On/Off problems
START
Step 1:
Perform System
Connector Protection Test.
Step 2:
Phone with Normal SW
Use TRS Fixture
Connect:
Display and Keypad
Connect: VBATT
Try to Flash the phone by
using EMMA III SW
No
SL 5 Replace
Z2450
SL 4 Scrap
The phone
indicate charging
on display
5 Volt DC at
MP 123 (C2414)
Yes
No
Yes
Yes
Max 2 Ohm between
MP 119 (X2400_Pin11)
and MP 117
(Z2450 pin 3)
No
SL 5 Replace
R2484
SL 4 Scrap
Yes
No
Power up the phone
Connect USB Cable
From PC
Go to
USB/VBUS Charging
problems
No
3.3 Volt DC
Pulses at
MP 120 (C2476)
Yes
1.8 Volt DC
Pulses at
MP 125 (C2474)
Disconnect the
phone from
TRS Fixture
Flash process
Start-up
When using
EMMA
No
Yes
Download
ITP SW
By using EMMA
Passed
Yes
SL 5 Replace
D2010
SL 4 Scrap
No
1.8 Volt DC
Pulses at
MP 23 (R2427)
SL 5 Replace
D2000
SL 4 Scrap
No
Replace
D2404
Yes
Max 0.5 Ohm between
MP 119 (X2400_Pin11)
and MP 121
(Z2450 pin 2)
No
Max 2 Ohm between
MP 118 (X2400_Pin10)
and MP 116
(Z2450 pin 4)
Yes
Max 0.5 Ohm
between
MP 118 (X2400_Pin10)
and MP 122
(Z2450 pin 1)
No
Replace
System Connector
X2400
Replace
System Connector
X2400
SL 5 Replace
Z2450
SL 4 Scrap
Yes
No
Replace
D2404
Yes
Problem
solved
Claim
D2404
Yes
SL 5 Replace
D2000
SL 4 Scrap
No
Flash problems
/ Flash Problems
SEMC Troubleshooting Manual
8
(101)