Sd (Memory) Card Is Not Recognized - Sharp TQ-GX30E Service Manual

17. SD (Memory) card is not recognized.

Is the SD card checked for operation?
Is the SD card recognized on PC, etc.?
Is the card insertion detected?
Is 2.75 V or more applied to VAPP?
Can the SD card be formatted?
After formatting, can the SD card be used?
File system on the SD card is damaged.
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CONFIDENTIAL
YES
YES
YES
YES
YES
YES
manuals search engine
NO
Use an SD card that has been checked.
NO
Is SD/SIM FPC properly inserted to CN104?
YES
Does the signal of SD_DET become "L" when the card is
inserted?
YES
IC106 is defective.
NO
IC103 or Q103 is defective.
SD card socket and CN104 are in poor contact. SD_CLK,
NO
SD_CMD, and SD_DAT [3:0] on PWB are broken or short-cir-
cuited. IC106 is defective or has come off.
NO
IC106 is defective or has come off.
2 – 65
GX30
NO
Reinsert SD/SIM FPC, and
try again.
NO
SD card socket and CN104
are in poor contact. Hardwir-
ing on PWB is broken.