K850
1203-2528 rev. 1
TROUBLESHOOTING
Main Camera Problems
TROU
B
L
E
S
H
O
OTIN
G
START
Load ITP SW
into the phone.
Use TRS Fixture and
Connect: Display and Main Camera Module
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
If the Main camera module is not connected
or not working properly the Fault Trace SW
will show an error message in the Trace
window.
Fault Trace SW
MMI
Misc
Activate:
Main Camera Test
No
2.8 Volt DC at
MP 32 (TP2204
VCAMAF)
1.8 Volt DC at
MP 76 (R2280
CAM_LDO_EN)
Replace
D2420
Yes
Replace
N2206
No
1.8 Volt DC at
MP 27 (TP2206
VCAMIO)
Yes
Replace
N2203
No
1.2 Volt DC at
MP 28 (TP2207
VCAML)
Yes
No
Yes
2.8 Volt DC at
MP 82 (ST2275
VCAMSA)
Replace
N2208
No
Yes
1.8 Volt DC at
MP 54 (TP2208
VCAMSD)
No
Is
Result GPIO_11
= High
Replace
D2420
No
Yes
Yes
Replace
X4301
26MHz at
MP 77 (R4301)
SL 5 Replace
D2000
SL 4 Scrap
No
Yes
Fault Trace SW
Logic
GPIO Manager
Application
GPIO_11 Read
Main Camera problems
Fault trace SW
MMI
Misc
Activate:
VGA Camera Test
No
1.8 Volt DC at
MP 76 (R2280
CAM_LDO_EN)
Replace
D2420
Yes
1.8 Volt DC at
MP 27 (TP2206
VCAMIO)
Replace
N2203
No
Yes
2.8 Volt DC at
MP 82 (ST2275
VCAMSA)
Replace
N2208
No
Yes
Replace
X4300
13MHz at
MP 77 (R4301)
SL 5 Replace
D2000
SL 4 Scrap
Yes
No
START
Load ITP SW
into the phone.
Use TRS Fixture and
connect Display and VGA Camera
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
If the VGA camera is not connected
or not working properly the Fault
Trace SW will show an error
message in the Trace window.
VGA Camera problems
/ VGA Camera Problems
SEMC Troubleshooting Manual
12
(101)