Phone Is Totally Dead - Nokia 6610 Repair Hint

Customer Care Europe, Middle East & Africa
SCCE Training Group
 2003 Nokia Mobile Phones

Phone is totally dead

Pre-check:
Try to turn on the phone.
If nothing happens, follow repair instructions:
o
If the phone powers up but shuts down automatically, follow repair instructions:
o
If a loose battery causes the symptom "powers down", follow repair instructions:
o
Phone is totally dead
If the phone is totally dead, try to flash the phone.
If an error message from the flash prommer is shown e.g.:
check VIO = 1.8V DC at C405. If the voltage is not ok, check components in VIO line from Flash D450 to UEM D200 for
shorts or interruptions and change or resolder faulty components.
Check Vcore = 1.8V DC at C403. If the voltage is not ok, check components in Vcore line from UPP D400 to UEM D200 for
shorts or interruptions and change or resolder faulty components.
If both voltages are ok, check general signals,
Figure 1
If both signals are ok, probably the D450 Flash is faulty and has to be changed. After changing it is necessary first to
flash the phone and than rebuilt IMEI/ESN and tune the phone.
Note! These signals are only measurable for about 5 – 10 seconds after connecting the phone to power.
© NMP 2003
"Phone is totally dead"
"Phones powers down"
"Phone powers down"
Boot serial line fail
o
Phone fail response received
o
Vpp voltage level fail
o
Data block NAK
o
Fiasco general
o
RFCLK 26MHz at C420.
o
32kHz SleepClk at J404
o
RFClk 26MHz
CONFIDENTIAL
NHL-4u/NHL4/NHL-4j
6610/7210/7250
Date 21/05/2003
32kHz SleepClk
Figure 2
Checked by:
SCCE Training Group
10 (22)
Repairhints
Version 3.0
Approved by:
CC Europe, Middle East & Africa