Display Illumination Problems; To Search For Components Throughout The Entire Document Use The "Search" Function In Adobe Opto Sensor Problems - Sony Ericsson Cyber-Shot C905 Troubleshooting Manual

Display Illumination 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
Led and Backlight
Activate:
Display Backlight
If Display Backlight is working on the TRS Fixture
then Replace
Display, PBA Key Flex Flip or Slider FPC Assy
If not then continue with the
Display ilumination Problems TRS guide
1: Ues Fault trace SW and go to:
MMI
Misc
Init Screen Testing
Replace
Led and Backlight
V4201
Deactivate:
Display Backlight
2: Disconnect Slider FPC Assy from the PBA
Yes
3.7V - 3.8V DC
3.7V - 3.8V DC
at MP 119
No
at MP 51 (TP4200)
(V4201_Anode)
Yes
No
Fault trace SW
Replace
L4200 MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Replace
Display Backlight
X4200
Yes
0 Volt DC at 17V - 20V DC at
Yes
MP 52 (TP4201) MP 51 (TP4200)
No
Is the
Replace Display illumination
V4203 Problem solved
Yes
TROUBLESHOOTING
Replace
V4200
Yes
More than
4 Volt DC
Pk-Pk Pulses
No
at MP 117
(V4200_Pin 3)
No
SL 5 Replace
N2000
No
SL 4 Escalate
Claim Component
V4203
Display Illumination Problems - Opto Sensor Problems
Opto Sensor Problems
Replace PBA Key Flex Flip
If successful claim PBA Key Flex Flip
Replace Slider FPC Assy
If successful claim Slider FPC Assy
if not continue with the
Opto Sensor Problems TRS guide
Go to
Dispaly illumination
No
Problems TRS guide
Go to
Display Problems
No
TRS guide
Connect: VBATT and DCIO/SEPI
SL 5 Replace
N2000
No
SL 4 Escalate
Replace
No
N2201
SL 5 Replace
N2000
No
SL 4 Escalate
SEMC Troubleshooting Manual
START
Step 1:
and retest the Phone
if not go to step 2.
Step 2:
and retest the Phone
Is the
Display
Illumination (LEDs)
Ok
Yes
Can you see
any picture on
Display
Yes
Use TRS Fixture
1.8 Volt DC at
MP 73 (R2217
OPTO_EN)
Shortly after phone
Power On
Yes
3 Volt
Pk-Pk Pulses at
MP 59 (TP2203
VOPTO30) Shortly after
phone Power On
Yes
Replace
X4200
Is the
Claim Component
Opto Sensor Problem
Yes
X4200
solved
1222-9526 rev. 1
C905
11 (124)