Nokia Lumia 1320 - ALS Troubleshooting

RM-994/ RM-995/ RM-996
BB Troubleshooting Guide
NOKIA INTERNAL USE ONLY Page 71
Copyright © 2013 Nokia. All rights reserved.
ALS troubleshooting
Phone ALS
does not work
Run ALS In Care Suite “Als Test”
Use finger to touch the window of
Light sensor& proximity sensor
Is the light
intensity change ?
Measure Vreg_L9_2V85
from C3606 and C3610.
Is voltage 2.85V?
Change Main PWB
Is I2C I/F ok?
Yes
Fail
Pass
Try to re-assemble the
MB on A-Cover and
make sure the screws
are tightened on the MB
Fail
Fail
Change J3601
Fail
Change Sensor
sub-board on A-
cover
Pass
End
No
Check same I2C bus
component Accelerometer
and E-compass is fail? Find
out which is broken
Go to Accelerometer
and E0compass
trouble shooting
Fail