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RM-12
Headset speaker (1)
External Earpiece does n't work
START
C heck sy s tem connector
NO
and PW B c ontacts.
Are they OK?
YES
C onnect a working
Pop-Port headset to the
sy s tem connector
Play MID I, AAC or
MP3 play bac k f ile
f rom Headset (HS).
Ensure that v olum e
lev el is high enough.
NO
Is HS speaker
working?
YES
See the following flow chart,
Issue 1 11/2004
Note! OMAP, UEM and UPP are unchangeable.
Clean contac ts
and replace
system
c onnector
(X2021)
C hec k audio path f rom the
s y stem connector to the
NO
Is the DC bias
Audio PA (L2004, L2005,
f rom Audio PA to
R 2026, R 2027, R 2032, R 2033,
sy s tem connector
C 2036, C 2027, C 2011, C 2010,
OK? (~1.8Vdc at
C 2009, C 2008, R 2028, R 2029,
X2021's pin
11,12,13,14)
C hange com ponents if
YES
Is the D C bias
f rom C ODEC to
NO
Audio PA
(~1.4Vdc at C 2104
and C 2105)
OK?
YES
NO
Is digital audio
C hange OMAP
signal f rom OMAP
to C ODEC present
(D 4800)
at J 4100?
YES
C hange audio
C ODEC
(N 4100)
COMPANY CONFIDENTIAL
Copyright © 2004 Nokia. All Rights Reserved.
Is the D C bias
f rom Audio PA to
sy stem connec tor
OK? (~1.8Vdc at
R 2030, R 2031).
needed.
Are the C OD EC
NO
Control-signals
(at R 4800) OK?
YES
C hange Audio
C OD EC (N 4100)
Nokia Customer Care
NO
C hange Audio P
(N 2100)
X2021's pin
11,12,13,14)
C hange OMAP
(D 4800)
55
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Troubleshooting
