Apple 2009 iMac - Page 10

iMac (21.5-inch, Late 2009) — Updates 10
2010-11-18
Updated 5 March 2010
Take Apart
• Camera: Added screw part number 922-9239.
• LCD Panel:
• Step 2: added caution: “Tilt display out no more than 4 inches (10 cm). Pulling display
too far could damage cables or connectors.”
• Step 3: added reassembly note: “Verify that all cables are rmly seated into connectors.”
• Vertical Sync Cable: Added reassembly note: “Insert cable securely into connector and
replace all mylar tape.”
Updated 8 January 2010
Troubleshooting
• General: Reworded “Update System Software & Firmware” section to indicate that using the
wrong version of Mac OS X can cause certain symptoms, and added link to:
kBase #TS3101: iMac (Late 2009): Using the correct Mac OS X system software
• General: Updated Apple Service Diagnostic and Apple Hardware Test version numbers,
updated Apple Hardware Test error code table.
• Startup Power:
• Updated “No Video” symptom code ow to include a check of the LVDS cable
connection to back of LCD panel.
• Updated “Corrupted Video” symptom code ow to include a check for the correct Mac
OS X build version.
• Display: Updated “Noise/Unstable Flickering” symptom code ow to include a check of the
Vertical sync cable connections.
Views
• Exploded Views: Added note that Video Card is “only for MXM models; not present with
integrated graphics”.
Updated 24 November 2009
Troubleshooting
• General: Updated close-up image of diagnostic LEDs.
• Mechanical: Fan noise issues: updated two topics, “Noise/Hum/Vibration” and “Fan Failures/
Thermal Issues” with the following information:
• Check: Verify if any tape, gasket, cable label, or cable is touching the fan blades and
causing a ticking noise.
• Actions: Secure the material so it doesn’t touch fan blades. If tape adhesive has lost its
stickiness, replace that section of tape.
Take Apart
• General Information: Added images to section “How to Remove a Broken Glass Panel.”
• Hard Drive and Hard Drive Sensor Cable: Added information about connecting sensor cables
to Western Digital drives: Orient the drive with its circuit board facing up and connect the
sensor cable to the hard drive pins, leaving the 2 left pins unconnected (exposed).