Flash Memory Faults - Nokia 7088 Troubleshooting Manual

7088 (Flower)
Base band Description and Troubleshooting

Flash Memory Faults

Flash
Memory
Faults
Measure 19.2MHz
MSM_TCXO. Is it
OK?
YES
Can the mobile
terminal connect to
PC via USB?
YES
Check ROM_CS_N
and WE_N. Are they
toggling during
programming?
YES
Memory IC is
defective, phone can
not be repaired and
must be replaced.
Page 32 © 2006 Nokia Corporation
Measure the
19.2MHz CLK
NO
coming from the
TCXO. Is it OK?
YES
MSM6025 is defective,
phone can not be repaired
and must be replaced.
Memory IC is
defective, phone can
not be repaired and
NO
must be replaced..
Is it work?
YES
END
MSM6025 is
defective, phone can
NO
not be repaired and
must be replaced.
Check/ change
VREG_TCXO, Y102,
R839, R849, C870,
NO
C871, C868, C869,
R853 and C863
Mobile
Terminal is
NO
Jammed
Company Confidential Issue 1 12/2006