Trouble Shooting Guide, Standard
4/00021-2/FEA 209 544/31 B
18(23)
7 SIM Problems
7.1
What is SIM-fault
Insert a functional SIM-card and a charged battery into the phone.
If “Wrong card” or “Insert correct card” is displayed on the display when starting the
phone it means that the phone is SIM-locked.
NOTE!
If the phone shall be SIM-locked, make sure that a correct SIM-card is used.
If the fault remains, send the unit on according to the local company directives.
If the phone displays “Phone lock” on the display it means that the customer has locked the
phone with a personal code. It will be unlocked in the reset program. (Available in the Built
Swap process)
If “PIN:” or “Enter PIN:” is displayed, it means that the SIM-card has been locked with a
personal code.
It is only SIM-fault if “Insert card” is displayed.
7.2
Type of fault
Open the phone and check for liquid damage.
Replace J603.
Measure the resistance between pin 1 and pin 5 of J603 (1-15 kohms).
If the resistance is low, replace C734 and C736.
If the fault remains, replace C735.
Measure the resistance of R734 (10 kohms). Replace it if it is incorrect.
Measure the resistance of R730 (15 kohms). Replace it if it is incorrect.
Measure the resistance of R733 (33 ohms). Replace it if it is incorrect.
Measure the resistance of R731 (33 ohms). Replace it if it is incorrect.
Measure the resistance of R732 (6.8 ohm). Replace it if it is incorrect.
If the fault remains, send the unit on according to the local company directives.
