GH688,GA628, Standard Electrical Repairs
4/00021-2/FEA 209 544/1.G 43 (112)
7 SIM fault (“Insert card”).
7.1 Definition of SIM-fault.
Insert a working SIM card and a fully charged battery into the phone.
• If the display says “Wrong card” or “Insert correct card” when you start the
phone it means that the phone is SIM-locked and cannot be repaired at this level.
• If the display say “Phone lock” it means that the customer has locked the phone
with a personal code. The phone will be unlocked in the reset part of the level 3
test.
• If the display says “PIN:” or “Enter PIN” it means that the SIM-card is locked
with a personal code.
• Only if the display say “Insert card” there is a SIM fault.
7.2 Measuring VSIMPAD.
Measure the voltage at the system connector between pad 8 and 10 (~4.9V, fig. 7.1).
• If the voltage is too low or missing, proceed to section 7.3.
• If the voltage is correct, proceed to section 7.4.
Fig. 7.1
Fig. 7.2 shows the component side of the board and fig. 7.3 the front side.
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