Opto Sensor Problems; On Off Key Problems - Sony Ericsson W995 Troubleshooting Manual

Opto Sensor Problems

START
Step 1:
Replace Slider Flex Assy and retest the Phone
If successful claim Slider Flex Assy
if not go to step 2.
Step 2:
Replace PBA Navi Key and retest the Phone
If successful claim PBA Navi Key
If not go to step 3.
Step 3:
Replace Display and retest the Phone
If successful claim Display
if not continue with the
Opto Sense Problems TRS guide
Is the
Go to
Display
Display illumination No
illumination (LEDs)
Problems TRS guide
Ok
Yes
Go to Can you see
Display Problems No any picture/image in
TRS guide the Display
Yes
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
More than
SL 5 Replace
1.8V Pk-Pk Pulse at
N2000 No MP 77 (C4215 OPTOEN)
SL 4 Escalate Shortly after phone
Power On
TROUBLESHOOTING
SL 4 Replace
X4300
Yes
SL 5 Replace
N2000
Opto Sensor Problems - On Off Key Problems
On/Off Key Problems
Load ETS SW into the Phone
Use TRS Fixture Display Holder and Connect:
Slider Flex Assy and PBA Navi Key to the PBA
Key Flex Assy and Keyboard to the PBA
VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
Perform Keypad Scan Test by pressing
all keys on the Numeric Keypad and the On/Off Key
Replace
No
X4300
SEMC Troubleshooting Manual
START
Use TRS Fixture
Connect:
Connect:
MMI
Misc
Init Screen Testing
Activate
Keypad Scan Test
Are the Go to
Numeric Keys No Numeric Keyboard
Ok Problems TRS guide
Yes
Is the Replace
On/Off Key Yes PBA Navi Key or
Ok Slider Flex Assy
1230-1858 rev. 1
W995
10 (125)