Apple imac 21 5 inch late 2009 User Manual

iMac (21.5-inch, Late 2009) Take Apart — Access Door 111 2010-11-18
First Steps
• Shut down computer.
•  Unplug all cables and 
the power cord.
•  Put on ESD strap. 
•  Place computer face 
down on a clean, flat 
surface so the bottom 
is facing you.
Tools
• ESD wrist strap
•  Phillips #2 screwdriver
Access Door  

iMac (21.5-inch, Late 2009) Take Apart — Access Door 112 2010-11-18
Removal
1 
Raise the stand and 
loosen 3 captive 
Phillips #2 screws.
2 Remove access door.
Important: To ensure 
proper cooling, iMac 
should not be operated 
without access door 
installed.  

iMac (21.5-inch, Late 2009) Take Apart — Memory 113 2010-11-18
First Steps
Remove:
• Access Door
Note: This computer 
uses PC3-8500, DDR3, 
1066 MHz SO-DIMMs. 
The maximum amount 
of memory is 16GB, with 
a 4GB DIMM installed in 
each slot.
Tools
•  ESD wrist strap
•  Black stick
Memory  

iMac (21.5-inch, Late 2009) Take Apart — Memory 114 2010-11-18
Removal
1 
Untuck tabs 
in memory 
compartment.
2 Pull tab to eject 
installed memory 
module. 
Tip: For better grip, 
attach double-stick 
tape to end of tabs.  
Reassembly
1 
Orient notch on 
memory with 
notch in memory 
compartment.
2 Press memory firmly 
into slot until you 
hear a click.
3 Tuck black plastic 
tabs into memory 
compartment.
4 Replace access door 
and tighten 3 captive 
screws.
Important: To ensure 
proper cooling, iMac...

iMac (21.5-inch, Late 2009) Take Apart — Glass Panel 115 2010-11-18
First Steps
• Shut down computer.
•  Unplug all cables and 
the power cord.
•  Put on ESD strap.
Caution: The glass panel 
is not tempered and will 
break into sharp pieces if 
mishandled.  A scratched 
or broken glass panel is 
not covered by warranty. 
Important:  
This procedure requires 
special tools, which are 
offered individually or as 
part of a cleaning kit.  See 
General Take Apart section 
for more information.
Tools
•  ESD...

iMac (21.5-inch, Late 2009) Take Apart — Glass Panel 116 2010-11-18
Removal
Note: Glass panel is held 
in place by magnets.
Caution: The glass panel 
has tabs along bottom 
that align with rear 
housing. Be careful not 
to damage tabs when 
removing glass panel.
Apple strongly 
recommends wearing 
clean, lint-free gloves 
whenever handling the 
glass panel, to reduce 
cleaning required on 
reassembly.
1 Glass panel can be 
removed in various 
ways:
•  Lay computer on 
its back and press 
clean suction...

iMac (21.5-inch, Late 2009) Take Apart — Glass Panel 117 2010-11-18
3 Remove suction cups 
and slide glass into 
protective microfoam 
bag.
Reassembly
1 
Remove protective 
covering from silicone 
roller and sticky sheet.
2 Clean silicone roller 
by rolling it back and 
forth a few times on 
sticky sheet. 
 
If sticky sheet looks 
dirty, use a new one.  
If roller is no longer 
tacky, wash it in warm 
soapy water.   
If tackiness does not 
return, replace silicone 
roller.  

iMac (21.5-inch, Late 2009) Take Apart — Glass Panel 118 2010-11-18
3 Set unit in upright 
position to minimize 
settling of dust.
4 Roll silicone roller over 
LCD panel to remove 
any particles.
5 Remove glass panel 
from microfoam bag.
Clean INSIDE of glass  panel with the silicone 
roller to remove dust.  
 
Note: If fingerprints 
or oils are on inside of 
glass, clean first with a 
microfiber cloth made 
damp with water.  

iMac (21.5-inch, Late 2009) Take Apart — Glass Panel 119 2010-11-18
6 Wearing clean gloves, 
place glass directly 
onto unit, aligning 
tabs along bottom 
with notches in rear 
housing.  Magnets will 
catch it and hold it in 
place. 
 
Make sure glass is flush 
with rear housing after 
it is reinstalled.
7 Clean outside of glass 
panel with a clean 
microfiber cloth.  Wipe 
glass until there is no 
longer any residue or 
haze.
8 Inspect glass for 
any remaining dust, 
fingerprints, or a hazy 
residue....

iMac (21.5-inch, Late 2009) Take Apart — Camera 120 2010-11-18
First Steps
Remove:
• Glass Panel
Tools
• ESD wrist strap
•  Torx T10 screwdriver
•  Black stick
Camera