User Guide

CCS Technical Documentation

Company confidential RH-23

Issue 1 03/2004 Nokia Corporation. Page 47

Accessory detection fault

Figure 40: Accessory detection failure troubleshooting

Start

Is accessory detected

when connected to

Pop-port?

End

Yes

Repair solderings or clean

contacts if dirty. Retest.

Check Pop-Port X101

(soldering, contact

plates), are they OK?

No No

Measure Ven from

R111? Is it1.8V?

Check N100, L107,

R103, C102, C112 &

C101. Check also

VOUT and VBAT

lines. OK?

Measure VOUT (pin4).

Is it ~2.8V?

Check R111. OK?

Measure ACI-line when

accessory NOT connected

(pin 3). Is it ~2.8V?

Check L106, R103, R102,

C103 & R109 and line.

OK?

Change/fix

defect part

Change

UEM (D200)

Connect ACI accessory.

Eg. HS-3

Change UPP

(

D400

)

Change/fix

defect part

Yes

Figure 14: Accessory detection failure troubleshooting