Apple iMac 2001 Service Manual
K
Service Source
iMac (Early 2001)
Marketing Reference: Winter 2000-2001
Updated 11 July 2005
Note
: The procedures for this product are almost identical to
the iMac (Summer 2000) computer. To differentiate the two
models, refer to the individual Service Source chapters, the
Knowledge Base, or the Technical Information Library.
© 2001 Apple Computer, Inc. All rights reserved.
K
Service Source
T ak e Apart
iMac (Early 2001)
Marketing Reference: Winter 2000-2001
Take Apart Version 2, 400 MHz Logic Board (June 2001) - 2
Version 2, 400 MHz
Logic Board (June
2001)
There is a Version 2, 400
MHz logic board for the iMac
(Early 2001), 661-2509.
backward
not
It is
compatible with the earlier
400 MHz board (661-
2427). Exchange like-forlike. Refer to Kbase article
58788 for information on
the iMac logic boards.
The bar code on the Ver. 2
board reads: “400 MHz,
P52A”.
Take Apart Version 2, 400 MHz Logic Board (June 2001) - 3
Thermal Pad Replacement
The following logic boards
utilize a thermal pad to help
cool the microprocessor:
661-2509 Ver. 2, 6612425, and 661-2426.
Failure to replace this pad
whenever the logic board is
separated from the divider
panel assembly may cause
the microprocessor to
overheat.
Refer to the Kbase article,
58792, “Microprocessor
Thermal Pad Replacement”
for more information.
Take Apart Version 2, 400 MHz Logic Board (June 2001) - 4
The take apart procedures for the iMac (Early 2001)
computers are identical to take apart procedures for iMac
(Summer 2000) slot loading computers. The slot-loading
iMac is referenced in all the pictures in this chapter.
Visible Differences on the iMac (Early 2001):
• White power-on LEDs
• Styles including Blue Dalmation and Flower Power, in
addition to Indigo and Graphite
• The following logic boards utilize the thermal pad (922-
4364) to help cool the microprocessor:
– 661-2509, 400 MHz, Ver. 2
– 661-2425, 500 MHz
– 661-2426, 600 MHz
Take Apart Version 2, 400 MHz Logic Board (June 2001) - 5
Tools
The following tools are
recommended for the take
apart procedures:
• phillips screwdriver
(No.1 and No.2)
• a stubby (short) phillips
screwdriver
• plastic flatblade
screwdriver to release
tabs on plastic housing
• jeweler’s screwdriver
• CRT discharge tool
• needlenose pliers
• ESD mat
Take Apart Bottom Housing With Flip Foot - 6
Procedures
Bottom Housing With Flip Foot
Before you begin, position
the computer face down,
resting the computer on an
ESD mat or other soft
surface.
Take Apart Bottom Housing With Flip Foot - 7
1. Using a plastic flatblade
screwdriver, remove
the VGA vented cover.
2. Remove the two screws
near the flip foot.
Take Apart Bottom Housing With Flip Foot - 8
3. Remove the video out
access door from the
bottom housing.
Take Apart Bottom Housing With Flip Foot - 9
4. Remove the two outer
screws located near the
video out port.
Replacement Note:
The
bottom housing uses two
sizes of screws. The two
shorter screws attach
near the flip foot.
Take Apart Bottom Housing With Flip Foot - 10
5. Pull the bottom housing
off the computer.
Take Apart Bottom Housing With Flip Foot - 11
Bottom Housing Replacement Note
1. Align the three tabs on
the bottom housing with
the tab slots on the front
outer bezel.
Ensure that the center
tab is properly aligned
or CDs and DVD discs
may not eject from the
slot.
2. Lower the bottom
housing into place and
replace the screws.
Take Apart EMI Cover - 1 2
EMI Cover
Before you begin:
• Position the computer
upside down, resting the
computer on an ESD mat
or other soft surface.
• Remove the bottom
housing.
Take Apart EMI Cover - 1 3
1. Remove the six screws
on the EMI cover.
Take Apart EMI Cover - 1 4
2. Lift the EMI cover off the
computer.
Note:
Be careful of the
VGA output port.
Take Apart EMI Cover - 1 5
Replacement Note:
Position
the rear of the EMI cover
into place first, positioning
the EMI cover over the video
port (if present). Continue
lowering the cover into
place by gently squeezing in
on both sides, as you lower
the cover into position.
Take Apart SDRAM DIMM - 1 6
SDRAM DIMM
Before you begin, position
the computer face down,
resting the CRT on an ESD
mat or other soft surface.
Take Apart SDRAM DIMM - 1 7
1. With a flatblade
screwdriver or coin,
turn the colored latch
counterclockwise on the
access door.
2. Pull the access door
down to open.
Take Apart SDRAM DIMM - 1 8
3. Push down on the plastic
tabs to release the
SDRAM module(s).
4. Carefully lift the SDRAM
from the slot.
Note:
Remove installed
SDRAM from the logic board
before returning the logic
board to Apple.
Take Apart AirPort Card - 19
AirPort Card
Before you begin, position
the computer face down,
resting the CRT on an ESD
mat or other soft surface.
If the AirPort Card is
Note:
not installed, a protective
antenna cap will be attached
to the antenna.
Take Apart AirPort Card - 20
1. With a flatblade
screwdriver or coin,
turn the colored latch to
open the access door.
The antenna and AirPort
Card will be visible
when you open the access
door.
If the AirPort card
Note:
is not installed, a clear
protective antenna cap
will be attached to the
antenna.
Take Apart AirPort Card - 21
2. Remove the AirPort Card
by lifting the card
straight up and out of the
card guides and
connector.
Take Apart AirPort Card - 22
3. Disconnect the antenna
from the small hole
AirPort Card.
Take Apart AirPort Card - 23
4. Remove the ground clip
from the AirPort
Adapter Card.
5. Using the pull tab,
separate the AirPort
Card from the adapter
card.
Take Apart CD/HD Carrier - 24
CD/HD Carrier
Before you begin, position
the computer upside down,
resting the computer on an
ESD mat or other soft
surface and remove the
following:
• bottom housing
• EMI cover
• SDRAM
Take Apart CD/HD Carrier - 25
1. Remove the four screws
connecting the CD/HD
drive carrier to the
metal chassis (also
known as the divider
panel).
Take Apart CD/HD Carrier - 26
2. Disconnect the following
cables fro the back of the
CD/HD carrier:
• hard drive power
cable
• hard drive data cable
• CD-ROM/DVD-ROM
data cable
• logic board cable
connector
Take Apart CD/HD Carrier - 27
3. Tilt the CD/HD carrier
forward and lift the
carrier out of the
computer.
Continue with the
Note:
Take Apart procedures if you
are replacing the CD-ROM,
DVD-ROM, or the hard
drive.
Take Apart CD-ROM / DVD-ROM/CD-RW - 28
CD-ROM / DVDROM/CD-RW
The procedures for
Note:
removing a CD-ROM, DVDROM and CD-RW are
identical. This procedure
will reference the CD-ROM
Take Apart.
Before you begin, position
the computer upside down,
and remove the following:
• bottom housing
• EMI cover
• SDRAM
• CD/HD carrier
Take Apart CD-ROM / DVD-ROM/CD-RW - 29
1. Using a Phillips
screwdriver, remove
the CD/HD carrier
mounting screws (two on
each side).
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