Nokia n-gageqda Service Manual
Nokia Customer Care
3 - Service Software Instructions
Company Confidential
RH-47
Issue 1 05/04
Copyright © 2004 Nokia Corporation
Page 80
Company Confidential
Audio signal routing
The order in which you perform the tests has no importance.
Test procedure:
1
Select a test from the list and click
Loop ON.
2
Apply an acoustic signal to the respective input (e.g. when testing
Hp in Ext out
you should apply an acoustic signal to the phone’s microphone).
3
The acoustic signal will be looped to the respective output. (e.g. when testing
Hp
in Ext out you will hear the acoustic signal at the headset’s speaker)
4
During each test you can change the
UEM output and input gain to several val-
MALT
speaker
Earpiece
RH-47
Ext. Headset
Hp in Ext out
Headset
Connector
Connector
Ext in Hp out
RH-47
Headset
Connector
Connector
Ext. Headset
Earpiece
AF in
AF out
AF in
MALT
speaker
AF out
Ext in IHF out
RH-47
Headset
Connector
Connector
Ext. Headset
Earpiece
AF in
MALT
speaker
AF out
Speaker
Micro-
phone
phone
Micro-
phone
phone
Micro-
phone
phone
Micro-
phone
phone
Micro-
phone
phone
Micro-
phone
phone
Speaker
Speaker