•
Drive signals on + and - side of vibra
•
Drive signals on other side of L2105, L2106
Figure 16 Vibra drive
Component check and consider replacement of:
•
M2100 vibra motor
•
C2108 maybe short
•
C2109 maybe short
•
C2110 maybe short
•
L2105 maybe short
•
L2106 maybe short
•
N2200 audio asic
Tip:
Dilbert vibra drive signals are generated in N2200, so there is no point replacing D2800 to try
to fix a vibra fault.
ALS technical description and troubleshooting
Dipro ALS function
The automatic light sensor and proximity sensor functions are combined in N1100, "Dipro".
The ALS is used to change the brightness of the display and LED lighting. The proximity sensor picks up
reflected short pulses of infra-red light from LED V1100 and is used to turn the display off when in-call to
save power.
Check for the display changing brightness in different lighting, with the phone user setting adjusted
appropriately.
Perform Dipro Self Test.
RM-609
BB Troubleshooting and Manual Tuning Guide
Page 3 – 42
COMPANY CONFIDENTIAL
Issue 1
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