Nokia 6020b Service Manual

Issue 1 03/2005

COMPANY CONFIDENTIAL

15

Copyright © 2005 Nokia. All Rights Reserved.

RM-31
6(a) - Baseband Troubleshooting Instructions

Nokia Customer Care

■ 

Connect 

charger

(ACP-7E)

Check R2001, 

C2005 R2274,  
C2271, R2271,  

and line.

Change UEM

Retest

Check X2001, 

C2006, C2007, 

F2000, L2003 

and line.

Yes

No

Yes

No

No

Yes

Yes

Remove (fuse)

 F2000 and measure 

current. Is it

 ~350...390 mA?

Read 

BTEMP value. 

(compare it to ambient 

temperature). Is it 

~25°C (0319)?

Measure

voltage over (TVS)

V2000. Is it

>3.0 Vdc?

Does

Battery bar

scroll?

Charger

Does

 the display show "Not 

charging"?

No

Check C2004, 

R2270, R2273 

and C2270.

Check FUSE 

F2000

Yes

No

  If charging does not work, the cause 

might be faulty or no calibration of BB. 
Therefore the calibration should be 
checked if the procedures in the flow 
chart do not help.