Tools of the job.
Screwdriver set, Thermal Paste, Blanket, Anti-static
Wrist strap.
Ready to go.
Support the upper dome
seperately to the base.
Four screws hold on the
base. The base has the iMac's serial number and
original configuration.
Anti static wrist-band
connected. Touch the base reduce the risk of damage
due to static build up.
Gentle unclip the
SODIMM.
Pull the clear plastic
tab to remove the Airport (Extreme) card.
Disconnecting the
Airport aerial
Accessing the iMac G4
'Factory' compenents.
Four screws (T15) are
all that need to be removed to get at the 'Factory
only' components.
Cracking the case. Take
your time as the cables in there are short. You don't
want to rush and damage them.
Cracking the dome
open
Carefully seperate the
base from the dome.
Carefully lower the base
down
3.6volt ½ AA size - PRAM
Battery (abnout $5/£6)
Thermal Pipes across top
of logic board take heat away from the G4
processor
Open view
Close-in open view
Close-in view of
connectors
Power/electrical
connector
Internal mono speaker
for when you don't have the Apple Pro Speakers or
other external audio device connected.
All connectors are
closeby
Right-hand port view
Apply a petit pois size
blob to the pillar in the base.
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Line the Airport
(Extreme) connector up and then firmly push it
downwards. You will feel a click.
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Replacing the PRAM
Battery
Factory DIMM
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TDMS Video connector //
VERY FRAGILE //
TDMS Connector cover.
There are two sticky pads holding the cover down. An
AASP didn't replace these on my iMac following work
so I guess they aren't too essential.
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Close-in view of
connectors.
Gently loosen the audio
connector.
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Removing the old thermal
paste.
Scrape the old thermal
paste off the top and bottom pillars.
A small metallic strip
holds the shielding grill on to the Optical
Drive.
Shielding grill from
Optical Drive.
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Remove the old thermal
paste off the top and bottom pillars.
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Power Supply Unit and
internal view of the optical drive door
mechanism.
Half of the Power Supply
Unit.
All the internal cables
that connect the iMac top to the base.
ATA/ATAPI drives
Hard drive
Hard Drive covered in a
sticky white plastic wrapper.
The white wrapper
probably just keeps dust off the drive as the hard
drive is directly beneath the cooling fan.
700/800MHz have 5,400rpm
ATA66 drives, 1.0/1.25GHz have 7,200rpm ATA100
drives.
Rear of the
The optical drives tend
to use a thinner bezel.
The iMac G4 is the only
iMac to use a standard 5.25" Desktop-size optical
drive. Replacements are <$40/£25.
Under the white wrapper
is a bog-standard 3.5" IDE (ATA66/100) hard
drive.
Parallel IDE/ATA/ATAPI
connectors
The cooling fan is
located at the highest point centrally in the iMac's
base.
IDE cable for Optical
drive is taped to the base of the Optical drive. This
will probably tear off when you open the case.
Open view
Use the syringe to apply
small amount of Thermal Paste.
Apply small amount of
thermal paste to the pillar on the base. Spread it
slightly then allow the compression of the two
pillars to do the rest.
Blob of Thermal Paste on
pillar.
Line up the tab, then
push the SODIMM upwards until the notches on the side
line up. Then push the SODIMM towards the iMac base.
Don't touch the chips. Wash you hands and onlyh touch
the edges of the module.