iMac (27-inch, Mid 2010) Symptom Charts — Mass Storage 84
2010-09-09
SD Card Not Recognized
Unlikely cause: LCD panel, logic board, optical drive, hard drive
Quick Check
Symptom Quick Check
SD Card Not Recognized
• Card does not show up on
desktop or in System Proler
1. Insert user ’s SD card into a known-good system
and verify that it functions properly. If card
cannot be read, contact card manufacturer for
support options.
2. Verify SD card slot with known-good SD card.
3. Check correct drivers are installed for user’s SD
card type. Standard SD cards are supported by
Mac OS X, but others may require specic driver
software to be used.
Deep Dive
Check Result Action Code
1. Verify if SD card inserts
correctly in SD slot.
Yes Go to step 2.
No Go to SD Card Will Not Insert
Into Slot symptom ow.
2. Unlock and insert user ’s SD
card and verify it shows up on
desktop or in System Proler.
Yes Go to step 6.
No Go to step 3.
3. Insert a known-good unlocked
SD card and verify if read/write
capabilities are working.
Yes User’s SD card not functioning
properly. Contact card
manufacturer for support.
No Go to step 4.
4. Run System Proler and verify
if SD card reader is now listed
in USB devices.
Yes Go to step 5.
No Reseat SD cable at SD board
and logic board
If issue persists, replace
SD reader cable.
If issue persists after cable
was replaced, replace
SD reader board.
If issue persists after card
reader was replaced, replace
logic board.
X03
X24
M17