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RH-109
BB Troublesh0oting and Manual Tuning Guide
Headset
Set Headset mode
Check EAR_DET_N
-R712 : 1.8V to 0V
•Earphone detection Check
•Headset Output Check
Check signal path
-
R711, L701, C711, VR704
-
R710, L700, C710, VR703
-Headset and U100
•Button signal Check
•Mic Input Check
Check Mic Bias
-R702,C702: about 1.5V
Check signal path
-Headset, C706, U100
•Detection
Issue
•Headset
Receiver
Issue
•Headset
Mic Issue
•Send Key
Issue
Check SEND_END_N
-L702, R713 : 1.8V to 0V
-Headset and U100
J701
R712
VR704
VR703
L701
L701
R711
C701
R711
C701
L702
Page 3-22
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2008 Nokia. All rights reserved.
Summary of Contents for 1606Arte
Page 104: ......