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Apple imac 20 inch mid 2009 User Manual

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Page 101

iMac (20-inch, Early/Mid 2009) Take Apart — Memory 101 2010-11-24
First Steps
Remove:
• Access Door
Tools
• ESD wrist strap
•  Clean, lint-free cloth
•  Black stick
Memory  

Page 102

iMac (20-inch, Early/Mid 2009) Take Apart — Memory 102 2010-11-24
Removal
1 
Untuck tab 
in memory 
compartment  
(a black stick can 
help) and pull it 
to eject installed 
memory module.
Reassembly
1 
Orient notch on 
memory module with 
notch in memory slot.
2 Press memory 
module fully into slot 
until you hear a click.
3 Fold black plastic tab 
over each memory 
module.
4 Replace access door 
and tighten captive 
screw.  

Page 103

iMac (20-inch, Early/Mid 2009) Take Apart — Glass Panel 103 2010-11-24
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
•...

Page 104

iMac (20-inch, Early/Mid 2009) Take Apart — Glass Panel 104 2010-11-24
Removal
Glass panel is held in place 
by magnets in front bezel.
1 Lay computer on 
its back and press 
clean suction cups in 
opposite corners on 
clean glass panel.
Apple strongly 
recommends wearing 
clean, lint-free gloves 
whenever handling the 
glass panel, to reduce 
cleaning required on 
reassembly.
2 Lift panel straight up 
and off.  

Page 105

iMac (20-inch, Early/Mid 2009) Take Apart — Glass Panel 105 2010-11-24
3 Remove suction cups 
and slide glass into 
protective microfoam 
bag (922-8259).
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.  

Page 106

iMac (20-inch, Early/Mid 2009) Take Apart — Glass Panel 106 2010-11-24
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.  

Page 107

iMac (20-inch, Early/Mid 2009) Take Apart — Glass Panel 107 2010-11-24
6 Note alignment pins 
on inside of glass 
panel. 
 
Caution: Pins can 
break off if glass panel 
is removed or installed 
at an improper angle.
7 Wearing clean gloves, 
place glass directly 
onto unit.  Magnets 
will catch it and hold it 
in place.  
 
Make sure glass is flush 
with rear housing after 
it is reinstalled.  

Page 108

iMac (20-inch, Early/Mid 2009) Take Apart — Glass Panel 108 2010-11-24
8 Clean outside of glass 
panel with a clean 
microfiber cloth. 
Wipe glass until there 
is no longer any 
residue or haze.
9 Inspect glass for 
any remaining dust, 
fingerprints, or a hazy 
residue.  If there are 
contaminants trapped 
between LCD panel 
and glass panel, repeat 
cleaning procedure 
before returning unit 
to user.  

Page 109

iMac (20-inch, Early/Mid 2009) Take Apart — Front Bezel 109 2010-11-24
First Steps
Remove:
• Access Door
•  Glass Panel
Tools
• ESD wrist strap
•  Torx T8 screwdriver
Front Bezel  

Page 110

iMac (20-inch, Early/Mid 2009) Take Apart — Front Bezel 110 2010-11-24
Removal
1 
Lay computer down 
with rear cover and 
stand on a soft, 
protective surface.
2 Remove T8 screws: 
(8) 922-8206, 13mm 
(4) 922-8207, 25mm
Reassembly Note: 
The 4 longer screws 
attach along bottom 
of bezel.
3 Slowly lift bezel from 
top, without straining 
microphone cable.    
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