Nokia 7280 Service Manual

ISSUE 1 11/04

COMPANY CONFIDENTIAL

27

Copyright © 2004 Nokia. All Rights Reserved.

RM-14

Baseband Troubleshooting and Manual Tuning

Nokia Customer Care

Is problem present

both in hand

portable mode and

when using FM

radio/music player/

MIDI?

IHF is defective.

Check IHF speaker

and connections.

Check L155, L156

and C162.

Check UEME.

Is problem

related to

earpiece, IHF or

accessory?

No

Start

Defective
music file

Earpiec

e

Is problem

present both in

earpiece, IHF

and with

accessory?

Yes

Is problem

associated with

FM radio or

music player/

MIDI?

Music

player/MIDI

FM

radio

Is external

antenna

working?

No

Accessory is

not detected

or is defective

FM module is

defective

Yes

Accessory is

defective

Accessory

IHF

Earpiece is

defective. Check
IHF speaker and

connections. Check

L155, L156 and

C162.

Check UEME.

Software or

UEME is

defective

Yes

No

L153 and C164.
Check UEME.