Nokia 7230 Memory Card Not Inserted Problem Solution
First, ensure that the memory card slot pins are free from oxidation and foreign objects. Check also that it is not damaged or misaligned and still properly soldered. Trace and check the voltage supply line paths as well also the ground line. If the voltage supply and ground lines is okay, but the problem still exists, you may then suspect that the problem lies on the GAZOO IC, reworking or re-balling the chip might possibly solved and fix the problem