Nokia 6020b 服务手册
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Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions
8
COMPANY CONFIDENTIAL
Issue 1 03/2005
Copyright © 2005 Nokia. All Rights Reserved.
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Phone is dead 1
Is voltage
=3,7VDC at L2200 and
C2239
Phone is
dead
Is VBAT=3.7VDC
(meas. on X2000)?
Is Pin 1 on
S2419 "high" when
power key is not
pressed?
Is Pin1 on
S2419=0VDC when
power key
is pressed?
Dead2
Yes
Failure in
VBAT line,
check: X2000
Check: L2200
and C2239
Yes
Check R2423,
C2402
Check S2419,
PWB
Yes
Yes
No
No
No
No
Retest