Ambient Light Sensor Troubleshooting; Introduction To Als Troubleshooting; Gps Troubleshooting; Gps Antenna - Nokia RM-555 Service Manual

RM-555
BB Troubleshooting and Manual Tuning Guide

Ambient Light Sensor troubleshooting

Introduction to ALS troubleshooting

If the Ambient Light Sensor (ALS) functionality is inoperative, check the ambient light sensor (N503) and
change it, if necessary. Also, check the capacitor C519 (100n).
The ALS components are located at the top of the main FPC.

GPS troubleshooting

GPS antenna

The integrated GPS/WLAN/Bluetooth antenna is located on the top left side of the B-cover, near AV-jack, and
the GPS signal is routed to the antenna feed point through a diplexer. The GPS/WLAN/Bluetooth antenna has
2 contacts on the PWB with C-clips.
Issue 1
Figure 31 GPS/WLAN/Bluetooth antenna
Figure 32 GPS/WLAN/Bluetooth antenna assembled on B-cover
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