Nokia 6220 Service Manual

CCS Technical Documentation

                                Company confidential 

RH-20

Issue 1  10/2003

Nokia Corporation.

Page 39

Start

Is the FBUS 

TX-line HIGH 

after startup?

Measure BSI-pulse 

during Flash 

operation. Is it OK?

Measure FBUSTX-line 

during Flash operation 

(J411). Is it ~1.8V?.

Check R104.

If OK, change UEM

Yes

End (retest)

No

No

Is FBUSTX-line 

set to LOW after 

it has been 

HIGH?

Yes

Yes

Check BSI-line including 

X100,C100,C240,R202 

and R206.

No

Wrong 

manufactor ID 

and device ID

Is phone totally 

dead?

No

No

Change UPP

Yes

No

Change Flash

Yes

Phone is dead

Phone is 

jammed

Phone doesn't 

start up or it's 

jammed?

Yes

Yes

No