Nokia 6020b Service Manual

 RM-31

Nokia Customer Care                                6(a) - Baseband Troubleshooting Instructions

24

COMPANY CONFIDENTIAL

Issue 1 03/2005

Copyright © 2005 Nokia. All Rights Reserved.

■ 

Measure

voltage from S2419.

Is it 3.7V?

      Measure

     voltage from S2419

when power key

is pressed.

Is it high?

Check 

S2419.

Is it OK?

 

No

No

Yes

Yes

Yes

Yes

No

No

Keypad

faults

Is the 

power key

working?

Check R2423, 

C2402, C2400, 
S2419 and line.

If OK change UEM

Phone is 

dead

Change S2419

Phone is 

jammed

Keypad

faults

2

Retest