Troubleshooting; Dead Phone Problems - Sony Ericsson Aino - U10 Troubleshooting Manual

Dead Phone Problems part 1
START
Step 1:
Try to Recover the Phone by using EMMA SW:
Update SEMCBOOT after this Run EMMA SUCR SW
If successful claim SW Flash
If not go to step 2.
Step 2:
Use TRS Fixture
Perform a visual inspection of
the X2201 Battery Connector
Is the X2201
Battery Connector
Ok and L2203
= Max 1 Ohm
Yes
Connect VBATT to TRS Fixture
Is the
Current Consumption
more than
1mA
Yes
Try to trace the Faulty Component
by using Freezing Spray
Is the
RF Module
Replace
Yes N1200 (Tiger)
N1200
getting hot
SL 5 Replace
N2000 No
SL 4 Escalate
Try to trace the
Faulty Component
by using Freezing
Spray

TROUBLESHOOTING

Replace
No
X2201 or L2203
Go to
No Dead Phone
Problems part 2
SL 5 Remove
No N2000
SL 4 Escalate
Is the
Current Consumption
still more than
1mA
Yes

Dead Phone Problems

Dead Phone Problems part 2
START
NOTE !
Before following this guide the Dead Phone Problems part 1 TRS guide
must be finished.
Use TRS Fixture
Connect VBATT and DCIO/SEPI
1.8 Volt DC at
No MP 36 (ST2218
VDDE18)
SL 5 Replace
N2000 Yes
SL 4 Escalate
2.8 Volt DC at
No MP 13 (C1218
LDOA_OUT)
2.6 Volt DC at
No MP 14 (ST2216
VAUDIO26)
SL 5 Replace
N2000 Yes
SL 4 Escalate
2.5 Volt DC at
No MP 2 (ST2300
VANA25)
SEMC Troubleshooting Manual
SL 4 Replace
32 kHz
B2100
RTCCLK at No
SL 5 Replace
MP 37 (ST2103)
N2000
Yes
26 MHz SL 5 Replace
No at MP 4 (R2123 Yes N2010 or N2000
MCLK) SL 4 Escalate
2.8 Volt DC at
Replace
Yes MP 33 (C1207 No
N1211
VRAD28)
Yes
SL 4 Replace
1.2 Volt DC at
L2200
Yes MP 3 (C2316 No
SL 5 Replace
VCORE12)
N2000
SL 4 Replace
1.8 Volt DC at
N1200
Yes MP 39 (ST2232 Yes
SL 5 Replace
VMEM)
N2010 or N2000
No
Disconnect:
VBATT and DCIO/SEPI
Remove the PBA from TRS Fixture
Is L2202 Replace
No
= Max 1 Ohm L2202
Replace
Yes
N2207
1235-5821 rev. 1
Aino - U10
7 (57)