Display Problems - Sony Ericsson Cyber-Shot C905 Troubleshooting Manual

Dead Phone Problems part 3
Before following this guide the
Dead Phone Problems part 2 TRS guide
must be finished
Is the
1.1V – 1.2V DC
VCORE12
at MP 115
No
Voltage
(V2201_Cathode)
Ok
Yes
Is
MP 116 (ST2209)
Short circuit to the
PBA GND (Shield
Yes
Can Fence)
Is the
VCORE18/VMEM18 1.8 Volt DC at
No
Voltage MP 40 (ST2225)
Ok
No
Is
MP 40 (ST2225)
Short circuit to the
PBA GND
(Shield
Yes
Can Fence)
Step 1:
Disconnect:
VBATT and DCIO/SEPI
Step 2:
Connect:
Key Flex Assy and Slider FPC Assy Is the
to the PBA ITP SW Flash
Connect: VBATT Only Successful
Step 3:
Use EMMA SW
Press the "C" key and Connect
USB Cable from the PC to the PBA
Flash the Phone with ITP SW
TROUBLESHOOTING
START
NOTE !
3.8 Volt DC at Replace
No No
MP 114 (L2201) L2201
SL 5 Replace
V2201 or N2000
Yes
SL 4 Escalate
SL 5 Replace
N2000 or N2010
Yes
SL 4 Escalate
Replace
No
L2200
SL 5 Replace
N2010
Yes
SL 4 Escalate
SL 4 Replace
N2200
Yes
SL 5 Replace
N2010
SL 4 Replace
N2200
No
SL 5 Replace
L2202
SL 5 Replace
N2020
Yes
SL 4 Escalate
Go to USB and
Software Flash
No
Problems TRS guide
Dead Phone Problems - Display Problems

Display Problems

START
Step 1:
Flash the Phone with EMMA SUCR SW
If successful claim SW Flash
If not go to step 2.
Step 2:
Load ITP SW into the Phone
Use TRS Fixture
Connect:
PBA Key Flex Flip, Slider FPC Assy and Display
to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Display Pattern
Activate:
TV Test Pattern
If Display is working on the TRS Fixture
then Replace
Display, PBA Key Flex Flip or Slider FPC Assy
If not then continue with
Display illumination Problems TRS guide
Go to Is the
Dispaly illumination Display Backlights
No
Problems TRS guide Ok
Yes
Go to Is the picture
Opto Sensor too dark or
Yes
Problems TRS guide too light
Replace Are all
Z4200, Z4201 or Display Filters
No
Z4202 Ok
Yes
Replace
X4200
Is the Display
Problem solved
SEMC Troubleshooting Manual
Disconnect: VBATT and DCIO/SEPI and
Remove PBA from the TRS Fixture
Use Digital Multimeter instrument (DMM)
and perform:
Z4200, Z4201 and Z4202
No
Display Filter Test 1 and 2
NOTE !
Be very careful when you're cutting the
Shield Can Fence to avoid component damage
It is recommended to use microscope for these
measurements
Z4200, Z4201 and Z4202
Display Filter Test
Test 1:
Check if Pins: 1,2,3,4,5,6,7,8
are NOT short circuit to GND
Test 2:
Max 2 Ohm between the following pins:
Pin 1 and 5
Pin 2 and 6
Pin 3 and 7
Pin 4 and 8
NOTE !
Test 1 and 2 must be made on all filters
Claim Component
Yes
X4200
SL 5 Replace
N2010
No
SL 4 Escalate
1222-9526 rev. 1
C905
10 (124)