Mobile Terminal Is Dead - Nokia 7088 Troubleshooting Manual

Nokia Customer Care

Mobile Terminal is Dead

Mobile
Terminal is
Dead
Is the mobile
terminal current is
zero or too high?
NO
Is the current
< 60 mA?
YES
Check RESET_N
signals. Is it high
(2.8V)?
YES
Check PS_HOLD
signals. Is it high
(2.9V)?
NO
Check LCM_OE_N
(same as OE_N). Is it
toggling after
RESET_N goes high?
NO
MSM6025 is defective,
phone can not be repaired
and must be replaced.
Issue 1 12/20 06 © 2006 Nokia Corporation
♦
If current is zero, check L101,Q400, R710, F1
and check the power on sequence. If there is
no power output, reheat solder joints or
change PM6610.
♦
YES
Make sure all BB regulators are at their respective
voltage levels (VDD_MSMA, VDD_MSMP,
VDD_MSMC, VREG_TCXO). Reheat solder
joints / change PM6610 if necessary.
Check J101, C108, C109
and R110.
NO
Are they OK?
YES
Reheat solder
joints , check R836
NO
or change PM6610
Is flash memory
YES
programming OK?
YES
Memory IC is
defective, phone can
YES
not be repaired and
must be replaced.
Baseband Description and Troubleshooting
NO
NO
Company Confidential
7088 (Flower)
Reheat solder joints /
change PM6610.
MSM6025 is
defective, phone can
not be repaired and
must be replaced.
Flash
Memory
Faults
Mobile
Terminal is
Jammed
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