Nokia 6610 - Flowchart Audio Faults

CONFIDENTIAL
20 (22)
Customer Care Europe, Middle East & Africa NHL-4u/NHL4/NHL-4j Repairhints
SCCE Training Group 6610/7210/7250 Version 3.0
Only
measurable when
pressing a
volume key
 2003 Nokia Mobile Phones
Date 21/05/2003
© NMP 2003
Checked by:
SCCE Training Group
Approved by:
CC Europe, Middle East & Africa
Flowchart audio faults
Connect the headset and make a
phone call or turn on the FM-Radio
and use volume side keys S300 and
S301 to change the volume.
Check VBat at
C167
Does the
volume change?
VBat ok?
Check
R161,R162, C164,
L151,L152 for shorts or
interruptions in IHF
speaker
line.
Audio faults
nOK
Check
ENA,CLK,DATA at
J152-154:
OK
Check
the sound if it
is poor or
low.
Phone okOK
OK
Resolder or
change faulty
components.
nOK
OK
Clean springs,
otherwise
change
C-cover I021.
Resolder or
change faulty
components.
Change IHF
power amplifier
N150.
Check
resistance ~ 7ohm with
ohm meter between both
IHF speaker contact springs.
Also check if the springs
are dirty or bent.
Check
R164-R167,
C157,C158 for shorts
or interruptions in
XEAR line.
nOK
nOK
OK
OK
OK
Change UPP. If
fault persists,
change PWB.
nOK
Check C167 for shorts
and change if
necessary.
nOK