Ambient Light Sensor troubleshooting
Introduction to ALS troubleshooting
If the Ambient Light Sensor (ALS) functionality is inoperative, check the ambient light sensor (N6502) and
change it, if necessary. Also, check the capacitor C6504 (100n).
The ALS components are located at the top of the UI flex as illustrated in the figure below.
Figure 22 ALS placement
GPS troubleshooting
GPS antenna
The GPS antenna is located on the back side of the B-cover (left-hand side, next to the camera). The GPS
antenna contacts the GPS antenna pad (connected to the ground) on PWB through the poco pin (in the B-
cover, above the camera).
Figure 23 GPS antenna
RM-505; RM-506
BB Troubleshooting and Manual Tuning Guide
Issue 1
COMPANY CONFIDENTIAL
Page 3 –41
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