SEMC Troubleshooting Manual
TROUBLESHOOTING
Charging Problems - USB/VBUS Charging Problems
K630 - V640 - K660
USB/VBUS Charging problems
Yes
No
Use TRS Fixture and
Fault Trace SW
Connect:
VBATT and
DCIO/SEPI
Start
Battery Calibration
No
Battery Calibration
Passed
Current Calibration
Passed
No
No
Flash the phone with
EMMA SUCR SW
and go to
Charging Test
No
Is the
3.2V and 4.1V DC
at MP 89 (TP2200)
during Battery
Calibration
SL 5 Replace
R2200
SL 4 Escalate
5 Volt DC at
MP 126 (C2201)
DCIO
Replace
System Connector
X2400
Phone
consuming more
than 10mA
Charger (DCIO)
Current
Yes
Start
Current Calibration
(C.C.)
SL 5 Replace
R2201
SL 4 Escalate
Replace
V2202
Is
R2201
0.3 Ohm
No
MP 28 (C2241
DCIO_INT)
Higher than
3,8 Volt DC
MP 126 (R2201
CHSENSEP) Higher
than 3,8 Volt DC
(During C.C.)
MP 109
(V2202_Pin 2
CHREG) Lower than
MP 28 (C2241)
(During C.C.)
Yes
No
Yes
No
The Phone
Consuming
DCIO Current
(During Current
Calibration)
Yes
Replace
X2200
Yes
Is
MP 87 (TP2202)
Short circuit to
PBA GND
Yes
Yes
SL 5 Replace
C2423 and C2424
SL 4 Replace
V2421
Is
Connection
between PBA GND
and Power Supply
VBATT GND
Ok
Yes
No
SL 5 Replace
N2000
SL 4 Escalate
SL 5 Replace
N2000
SL 4 Escalate
Yes
Yes
No
No
No
Yes
Use TRS Fixture
Fault Trace SW
Connect:
VBATT and
DCIO/SEPI
SL 5 Replace
N2000
SL 4 Escalate
START
Step 1:
Perform System Connector Protection Test
If successful go to step 2.
Step 2:
Load ITP SW into the phone
Connect: Dummy Battery
Connect:VBATT and DCIO/SEPI
Use Fault Trace SW:
Logic, Phone Power
Perform
Battery and Current Calibration
It is very important to follow
instrument settings instructions when performing
the Battery and Current Calibration Test.
Disconnect
VBATT and DCIO/SEPI
Charging problems
5 Volt DC at
MP 25 (ST2201)
No
Replace
System Connector
X2400
Yes
Connect
DSU-60/USB Cable
from PC to
the phone
5 Volt DC at
MP 76 (R2409)
Yes
SL 5 Replace
R2409
SL 4 Escalate
No
D2405
Getting hot
Yes
SL 5 Replace
D2405
SL 4 Escalate
No
START
Step 1:
Perform System Connector Protection Test
If step 1 is Ok then continue with step 2.
Step 2:
Use Phone with Normal SW
Use TRS Fixture
Connect: VBATT
SL 5 Replace
N2000
SL 4 Escalate
1215-3608 rev. 1
14
(96)
TROU
B
L
E
S
H
O
OTIN
G