One-Way Communication/ Low, Poor Or No Speech - Nokia 6610 Repair Hint
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Also See for 6610:
- User manual (185 pages) ,
- Troubleshooting instructions (42 pages) ,
- Service manual (273 pages)
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Customer Care Europe, Middle East & Africa
SCCE Training Group
2003 Nokia Mobile Phones
One way communication / low, poor or no speech
Pre-Check:
Try to test all audio functions of the phone, e.g. internal, external audio. Make a call between the faulty phone and the
tester, e.g. CMU.
If during a test call only a one way communication is possible or low, poor, no speech to be heard
o
or a high current consuption in connection with no audio on the docking station adapter MJF-13
follow repair instructions:
One way communication / low, poor or no speech
If one of the above mentioned faults appear connect headset and use the volume side keys S300 and S301 to change
the volume. If the change can be seen on the display but is not audible, check following signals:
Check Vbat at C167. If not ok, check C167 for shorts. Change component if necessary.
If VBAT is ok, check with oscilloscope ENA, CLK, DATA at J152-J154. These signals are only short peaks.
Note!
These signals are only measureable when pressing a volume key.
If one of the signals is missing, probably the UPP is not working and has to be changed; or there is an interruption
inside of PWB and this has to be changed.
If the IHF (internal handsfree speaker) is activated (phone call or FM-Radio on) but there is nothing to be heared, check
C164, R161, R162, L151, L152 for shorts or disconnections; resolder or change faulty component.
If the components are ok, check resistance on spring contacts of the I020 IHF speaker. A good value is around 7 ohm. If
the value is much higher, change the C-cover I021. The speaker cannot be changed seperatly.
Also check the spring contacts for dirt or bending and clean the contact if necessary;
or change C-cover if the contacts are bent.
If the IHF speaker way is ok, connect headset to the phone and check external audio.
If there is nothing to be heared or if the signal is poor or low and not changeable, check R164-R167, C157, C158 for
shorts or interruptions; resolder or change faulty components.
If these components are ok, change N150 IHF audio amplifier.
© NMP 2003
"One way communication / low, poor or no speech"
CONFIDENTIAL
NHL-4u/NHL4/NHL-4j
6610/7210/7250
Date 21/05/2003
Checked by:
SCCE Training Group
18 (22)
Repairhints
Version 3.0
Approved by:
CC Europe, Middle East & Africa
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