Nokia 6020b Service Manual

 RM-31

Nokia Customer Care                                6(a) - Baseband Troubleshooting Instructions

20

COMPANY CONFIDENTIAL

Issue 1 03/2005

Copyright © 2005 Nokia. All Rights Reserved.

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Change

speaker.

Is it working 

now?

Check C2164, C2180. If 

OK change UEMEK.

Check C2164, 

L2151, L2152, 
L2154, L2155, 

R2152, R2155, 

lines and  Vbat. If 

OK change 

UEMEK.

Yes

Yes

Yes

No

No

Audio

faults

4

Is

IHF speaker

working?

Set Phone in LOCAL 

mode.

Use Phoenix Audio Test. 

Set Ext microphone in Ihf 

speaker out, Loop On.

Measure

DC volts on speaker pads. 

Are they ~0.5Vbat (to 

GND)

Retest

END

No