Service manual

GX30

2 – 65

CONFIDENTIAL

17. SD (Memory) card is not recognized.

Is the SD card checked for operation? Use an SD card that has been checked.

Is the SD card recognized on PC, etc.?

Is the card insertion detected? Is SD/SIM FPC properly inserted to CN104?

Reinsert SD/SIM FPC, and

try again.

Does the signal of SD_DET become “L” when the card is

inserted?

IC106 is defective. SD card socket and CN104

are in poor contact. Hardwir-

ing on PWB is broken.

Is 2.75 V or more applied to VAPP? IC103 or Q103 is defective.

Can the SD card be formatted? SD card socket and CN104 are in poor contact. SD_CLK,

SD_CMD, and SD_DAT [3:0] on PWB are broken or short-cir-

cuited. IC106 is defective or has come off.

After formatting, can the SD card be used? IC106 is defective or has come off.

File system on the SD card is damaged.

YES

YES YES

YES NO

YES