Nokia 6020b 服务手册
Issue 1 03/2005
COMPANY CONFIDENTIAL
15
Copyright © 2005 Nokia. All Rights Reserved.
RM-31
6(a) - Baseband Troubleshooting Instructions
6(a) - Baseband Troubleshooting Instructions
Nokia Customer Care
■
Charger
Connect
charger
(ACP-7E)
Check R2001,
C2005 R2274,
C2271, R2271,
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.
Therefore the calibration should be
checked if the procedures in the flow
chart do not help.