Apple 17-INCH LATE 2006 CD Personal Computer User Manual

 Service Source
iMac
iMac (17-inch Mid 2006) and
iMac (17-inch Late 2006 CD)
24 April 2007
© 2006 Apple Computer, Inc. All rights reserved.
iMac
Contents
General Information 5
Product View 5
Note About Images in This Manual 5
Tools Required 6
Serial Number Location 7
Safety 8
Opening the Computer 9
Access Tool Modification 9
EMI Shielding 12
Lower EMI Shield 13
What’s New 16
23 April 2007 16
12 January 2007 16
31 October 2006 16
3 October 2006 16
2 October 2006 16
6 September 2006 16
11 July 2006 17
5 July 2006 17
Take Apart
Access Door 19
Memory 21
Front Bezel 24
Camera Board 33
Lower EMI Shield 37
IR Board 39
AirPort Extreme Card 42
Battery 45
LCD Display 48
ii
LVDS Display Cable 56
Inverter 61
Speakers 64
Optical Drive 67
Hard Drive 74
Power Supply 79
Logic Board 87
CPU Fan 92
Optical Drive Fan 94
Hard Drive Fan 96
AC Power Inlet 98
Ambient Light Sensor Board 102
Clutch Mechanism 106
AirPort Antenna 110
Camera Cable 113
Chassis 117
Rear Housing 120
Troubleshooting
General Information 122
Serial Number 122
Power On Self Test (POST) 122
DDR Memory 123
How to Reset the System Management Controller (SMC) 124
Diagnostic LEDs 125
Symptom Charts 127
Power Issues 128
No Video 130
Display 133
Hard Drive 134
Optical Drive 136
Fan Sound 141
iii
AirPort 144
IR Remote 145
IR Sensor/Receiver 146
Built-in iSight Camera 147
Speakers 149
Mouse 150
Keyboard 151
Error Beep(s) 152
USB 153
Views
Upper Exploded View 156
Lower Exploded View 157
Screw Chart 158
Screw Chart Page 1 158
Screw Chart Page 2 159
iv
General Information
Product View
Note About Images in This Manual
Because a pre-production model was used for most of the images shown in this manual, you may
notice small differences in appearance between the image pictured and the computer you are
servicing. However, although the appearance differs, the steps and sequence are the same unless
noted.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information Tools Required
The following tools are required to service the computer. Note that a special access card (part
922-7172) is required to open the front bezel.
•
ESD-safe workstation and mat
•
Soft, clean towel or cloth (to protect the display and removed parts from scratches)
•
Access card (part 922-7172)
•
Black stick (or other nonconductive nylon or plastic flat-blade tool)
•
Phillips #1 screwdriver
•
Phillips #2 screwdriver
•
Torx T8 screwdriver (magnetized)
•
Torx T6 screwdriver (magnetized)
•
Torx T10 screwdriver (magnetized)
•
Flat-blade screwdriver
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information Serial Number Location
iMac serial numbers are located on the bottom of the computer stand. Note: iMac computers
using Intel processors will not have the G5 listed in the configuration (as shown below).
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information Safety
Warning: When the iMac is under power, be aware that the power supply contains high voltages
that pose a potential hazard to your personal safety. Never work on or near the power supply
with the unit powered on, and as a further precaution always make sure the unit is unplugged
when working on it with the front bezel removed.
WARNING: HIGH VOLTAGE
Text or photographs marked by this symbol indicate that a potential hazard to your personal
safety exists from a high voltage source.
The power supply board is a high voltage source with the unit under power, and remains
powered up whenever the system is plugged in, whether or not the system is turned on. Use
extreme caution when troubleshooting the system with the front bezel removed.
•
Disconnect power to the system before performing maintenance.
•
Don’t work alone. In the event of an electrical shock it is important to have another
individual present who can provide assistance.
•
Keep one hand in your pocket when working on any iMac that is plugged in. This will
help ensure that your body does not provide a path to ground in the event that you
accidentally make contact with the line voltage.
•
Don’t wear jewelry, watches, necklaces, or other metallic articles that could present a risk
if they accidentally make contact with the power supply circuitry.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information Opening the Computer
Apple authorized, desktop certified technicians only should ever remove the front bezel on the
iMac. When the front bezel is removed, be sure to always ground yourself and follow ESD-safe
repair practices
Removing the front bezel requires using a special access card (part 922-7172) to release latches
located inside the upper corners of the front bezel. Slightly bending the upper quarter of the
access tool card will help engage the latch more securely.
As you are inserting the card to disengage the latch you should squeeze the top of the bezel,
that will help take pressure off of the latch and enable it to open easier. Note: If the bezel won’t
open, read the next topic, Access Tool Modification.
Once the card has been released it is safe to open the bezel. See the Front Bezel Take Apart
procedure for more information.
Access Tool Modification
If you wish to modify the access card tool, order kit 076-1213. The kit contains an access card and
a piece of EMI gasket that can be cut and added to the top of the card. The additional thickness
on the card will improve the contact with each bezel latch.
1.
Remove the tape on the gasket to expose the sticky side of the gasket. Attach the sticky side
of the EMI gasket to the top of the access card.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 2.
Cut the EMI gasket to the edge of the access card.
3.
Using packing tape, or something equivalent, fold the tape over the EMI gasket to attach the
gasket to the card.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 10
4.
Bend the card at a slight angle at the top to make sure the card makes contact with each
latch.
5.
Refer to Removing the Front Bezel for the complete procedure.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 11
EMI Shielding
The iMac enclosure is wrapped in EMI shielding that is easily torn and damaged. To maintain
a properly shielded unit, you must repair all accidental tears and cracks to the shielding by
covering them with EMI tape. Order ������������������������������������������������������������
EMI tape, part number 922-4786 (a long, thin strip) or 9225026 (short, wide strips).
Cover nicks, such as the those shown below, with EMI tape. Pay particular attention to the EMI
shielding inside the rear housing, shown below. The EMI shield is easily damaged when replacing
modules.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 12
Lower EMI Shield
EMI tape covers the top and sides of the display panel, and the lower EMI shield covers the logic
board along the bottom of the unit. The EMI tape and lower EMI shield are easily damaged when
removed, and removal is necessary in order to access most components within the unit.
Should the EMI tape that seals the display, or the EMI shield covering the bottom of the
enclosure (see photo below) accidentally tear, use EMI tape (922-4786 or 922-5026) to repair and
completely seal the unit.
When properly repaired, all edges shown below will be wrapped by EMI tape, and the tape
securely adhered to all edges. Use a black stick to flatten the EMI tape tightly and rub out air
pockets and wrinkles.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 13
Pay particular attention to the EMI shielding inside the rear housing, shown below. The EMI shield
is easily damaged when replacing modules
Lower EMI Shield
EMI tape covers the top and sides of the display panel, and the lower EMI shield covers the logic
board along the bottom of the unit. The EMI tape and lower EMI shield are easily damaged when
removed, and removal is necessary in order to access most components within the unit.
Should the EMI tape that seals the display, or the EMI shield covering the bottom of the enclosure
(see photo below) accidentally tear, use EMI tape to repair and completely seal the unit.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 14
When properly repaired, all edges shown below will be wrapped by EMI tape, and the tape
securely adhered to all edges. Use a black stick to flatten the EMI tape tightly and rub out air
pockets and wrinkles.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 15
What’s New
23 April 2007
•
•
The optical drive removal procedure has been updated. Using a screwdriver to release the
optical drive tabs is causing damage to the logic board. The updated procedure shows how
to remove the optical drive using a needlenose pliers.
Additional information on handling slot-load optical drives can be referenced in Kbase
article 305282.
12 January 2007
•
The “No Power” symptom in Troubleshooting has been updated. If your computer won’t
turn on, try removing and reinstalling the SO-DIMMs.
31 October 2006
•
Troubleshooting has been updated with a new symptom, “Fans running at full speed after
computer turns on.” Note: The customer may have entered a diagnostic mode that causes
the fans to run at full speed. This symptom is very easy to resolve at the customer level.
3 October 2006
•
The symptom “Starts Up To Black Screen or No Video (iMac 17-inch Mid 2006 only)” has been
added to the troubleshooting chapter. Upgrading to Mac OS X v10.4.8 resolves the issue.
2 October 2006
•
EMI tape photos (922-4786 and 922-5026), used to repair torn and damaged EMI shielding,
have been added to the�� EMI Shielding section in the General Information chapter.
6 September 2006
Introduction: iMac (17-inch Late 2006 CD)
•
1.83 GHz Intel Core 2 Duo processor
•
160 GB Serial ATA hard drive
•
Slot-loading Combo drive (DVD-ROM/CD-RW)
•
512MB of 667MHz DDR SDRAM; supports up to 2GB
•
Intel GMA 950 graphics processor with 64MB of DDR2 SDRAM shared with main
memory
•
New service parts for the iMac (17-inch Late 2006 CD)
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 16
•
•
•
•
Logic board (661-4116)
Hard Drive (661-4175)
Stand (922-7832)
Screw, T10, Flat head (922-7749)
11 July 2006
•
Updated the screw chart with photos of 922-7654 and 922-7655
5 July 2006
•
Introduction: iMac (17-inch Mid 2006)
•
Troubleshooting LEDs on the logic board
•
Logic board, dual core 1.83 GHz
•
DC-DC board is now incorporated onto the main logic board
•
Power supply, 120W single rail 12V
•
One wireless antenna (for AirPort)
•
No built-in Bluetooth
•
All units will have two identical DIMMs installed, 2x256MB. Configure to order (CTO)
option of 2x512MB and 2x1GB
•
80 GB hard drive standard, 160 GB CTO option
•
Remote control is CTO
•
Slated for the education market
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — General Information 17
 Service Source
Take Apart
iMac (17-inch Mid 2006), iMac (17-inch Late 2006 CD)
© 2005 Apple Computer, Inc. All rights reserved.
Access Door
Tools
•
•
•
Phillips #2 screwdriver.
ESD-safe workstation and mat
Soft, clean towel or cloth
Preliminary Steps
Before you begin, lay the computer down so the panel is face down and the bottom is facing
you.
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Access Door 19
Removing the Access Door
1.
Raise the stand and use a Phillips #2 screwdriver to loosen the two captive screws that
secure the memory access door. Remove the access door.
Replacing the Access Door
1.
Make sure the memory ejector tabs are in the closed position before attaching the access
door.
2.
Position the access door on the rear housing over the memory compartment.
3.
Lift the stand out of the way.
4.
Use a Phillips #2 screwdriver to tighten the captive screws.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Access Door 20
Memory
Tools
•
•
•
Phillips #2 screwdriver.
ESD-safe workstation and mat
Soft, clean towel or cloth
Preliminary Steps
Before you begin, lay the computer down so the panel is face down and the bottom is facing
you.
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Memory 21
Removing the Memory
Important: Always discharge static before you touch any parts such as the memory board. To
avoid generating static electricity, do not walk around the room until you have finished replacing
the memory.
1.
Pull the two levers in the memory compartment toward you. Pull HARD! If a memory module
is installed in the slot, pulling the levers will dislodge it. Note: The levers are used to remove
memory not to install memory. . Always install memory with your fingers.
2.
Set the memory modules aside.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Memory 22
Replacing the Memory
1.
Make sure the DIMM levers are all the way open.
2.
With the computer face down, orient the DIMM with the notch on the left.
3.
With your fingers, press the DIMM fully into the slot until you hear a click. After inserting the
memory, fold the DIMM levers closed. There will be a slight resistance and you will hear a
click when they fold into the closed position.
4.
Replace the access door on the memory compartment.
5.
Use a Phillips #2 screwdriver to tighten the captive screws on the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Memory 23
Front Bezel
Tools
•
•
Access card tool 922-7172
Torx T8 screwdriver
Preliminary Steps
Before you begin, follow steps for removing the access door and the memory.
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 24
Removing the Front Bezel
1.
With the bottom facing toward you use a T8 torx screwdriver to remove the four bezel
mounting screws. Note: The screw to the right of the door is longer.
2.
Stand the computer upright.
3.
Located the access card tool. Bend the upper quarter of the access tool card slightly to
engage the front bezel latches. Note: Refer to Access Tool Modification in the General
Information chapter if the bezel is difficult to open.
Note: Shown in the order they
were removed.
922-7011, short
922-7749, long
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 25
4.
This picture is intended to show how the access tool disengages the latch. Pushing the
tool up the vent on the rear cover releases the latch on the inside of the front bezel. Refer to
the next step for the procedure.
5.
Start on the left side (looking from the back of the unit). Insert the card to disengage the
latch. Squeeze the top of the bezel, that will help take pressure off of the latch and enable it
to open easier. As the bezel releases, pull the bezel away from the rear housing.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 26
6.
Repeat step 5 to release the locking latch in the right corner. Again, pull the bezel away as
the card releases the latch.
7.
If the bezel won’t release, pull the bottom of the bezel out a bit and insert the access card
again.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 27
8.
Repeat step 7 for the left side.
9.
Once the access card has been removed, it is safe to open the bezel. Position the unit on an
ESD mat, with the bottom facing toward you. Caution: Make sure the memory levers are
closed and not protruding from the bezel when removing the bezel.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 28
10. Lift the bottom of the front bezel straight up to remove it, and swing the bezel over onto its
top edge so you can disconnect two cables attached to the top of the bezel.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 29
11. Swing the bezel up so you can disconnect the two camera board cables Remove the any
kapton tape and disconnect the camera and microphone cables from the camera board..
12. If replacing a damaged front bezel, remove the camera board.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 30
Replacing the Front Bezel
1.
Position the front bezel near the top edge of the unit and connect the two camera board
connectors.
2.
Make sure the black EMI shielding along the top of the LCD panel is not in the way of the
locking mechanisms when you lower the front bezel onto the computer. Use a black stick to
press (re-stick) the EMI shielding along the top of the panel.
3.
Tuck the cables neatly into the channel on the rear housing.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 31
Note: Shown in the order they
were removed.
922-7011, short
922-7749, long
4.
Make sure the memory ejector levers are in the closed position (as shown) before lowering
the front bezel over the ejectors.
5.
Continue to lower the font bezel down and press the top corners of the front bezel to
connect the latches. Note: Check that the latches are connected by lifting the front bezel at
each corner.
6.
Replace the four bezel screws along the bottom of the computer.
7.
Replace the access door and tighten the two captive screws.
8.
Install any removed DIMMS after the unit is fully assembled. Important: Memory DIMMs
must be installed by hand. Do not use the memory ejector levers to install memory.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Front Bezel 32
Camera Board
Tools
The only tool required for this procedure is a T6 screwdriver.
Preliminary Steps
Before you begin, follow steps for removing the access door and front bezel.
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Board 33
Removing the Camera Board
1.
The camera board and cables are visible as you lift the front bezel off the computer.
2.
Disconnect the camera and microphone cables.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Board 34
3.
Using a T6 screwdriver, peel back the mylar and kapton tape as necessary and remove the
two camera board mounting screws. Pull the camera board straight out of the lens aperture
in the bezel to remove it.
922-7713
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Board 35
Replacing the Camera Board
922-7713
1.
Carefully align and insert the camera lens until it is snug in the bezel aperture.
2.
Install the camera board to the bezel with two mounting screws.
3.
Replace the front bezel.
4.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Board 36
Lower EMI Shield
Tools
The only tool required for this procedure is a “black stick” (or other nonconductive nylon or
plastic flat-blade tool).
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
Part Location
iMac (17-inch Mid 2006/Late 2006) Take Apart — Lower EMI Shield — 37
Removing the Lower EMI Shield
1.
Carefully peel the lower EMI shield off the bottom edge and side of the rear housing. Use a
black stick to help peel back the shield.
2.
If replacing a torn or damaged lower EMI shield, peel the lower EMI shield off the bottom
edge of the display.
Replacing the Lower EMI Shield
1.
Position the lower EMI shield over the bottom of the unit so that the holes in the shield are
properly aligned.
2.
Press the sticky, top edge of the EMI shield onto the bottom side of the display panel. The
crease in the EMI shield should align with the edge of the panel.
3.
Fold down the EMI shield and press it firmly over the bottom edge of the rear housing. Use a
black stick to rub out wrinkles and ensure that the EMI shield adheres firmly along all edges.
4.
Replace the front bezel.
5.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006) Take Apart — Lower EMI Shield — 38
IR Board
Tools
•
Torx T8 screwdriver (magnetized)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — IR Board 39
Removing the IR Board
1.
Using a Torx T8 screwdriver, remove the two IR screws and disconnect the IR cable from the
IR board connector. Remove the IR board from its mounting bracket.
922-7655
Replacing the IR Board
1.
Install the IR board and two mounting screws.
2.
Connect the IR cable to the IR board connector.
3.
Replace the lower EMI shield.
4.
Replace the front bezel.
5.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — IR Board 40
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — IR Board 41
AirPort Extreme Card
Tools
The only tool required for this procedure is a Torx T6 screwdriver (magnetized).
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — AirPort Card 42
Removing the AirPort Extreme Card
1.
Disconnect the antenna cable from the AirPort Extreme card connector and remove the two
T6 screws securing the card to the logic board.
2.
The card will spring up when the screws are removed. Grab the card from the connector end,
pull the card from its socket on the logic board.
922-7010
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — AirPort Card 43
Replacing the AirPort Extreme Card
922-7010
1.
Install the AirPort Extreme card into the socket.
2.
Install the two mounting screws securing the card to the logic board.
3.
Connect the AirPort antenna cable to the connector closest to the memory slot.
4.
Replace the lower EMI shield.
5.
Replace the front bezel.
6.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — AirPort Card 44
Battery
Tools
The only tool required for this procedure is a black stick.
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
Part Location
iMac (17-inch Mid 2006/Late 2006) Take Apart — Battery 45
Removing the Battery
1.
Pry the battery from the battery slot.
Replacing the Battery
1.
Slide the battery (with voltage information face up) into the battery holder.
2.
Replace the lower EMI shield.
3.
Replace the front bezel.
4.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006) Take Apart — Battery 46
iMac (17-inch Mid 2006/Late 2006) Take Apart — Battery 47
LCD Display
Tools
•
•
•
Torx T10 screwdriver
Torx T6 screwdriver
Black stick (or other nonconductive nylon or plastic flat-blade tool)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 48
Removing the LCD Display
1.
Using the black stick, or access tool, carefully peel back the EMI shielding from the left, right,
and bottom edges of the computer
2.
Using a Torx T6 screwdriver, remove the two LVDS cable connector screws. Disconnect the
LVDS display cable from the logic board. Below the LVDS connector, disconnect the inverter
cable from the logic board.
922-7010
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 49
3.
Peel the EMI tape away from each side of the panel. Using a Torx T10 screwdriver, remove the
four panel mounting screws.
4.
Pivot the panel up, as shown, then carefully peel the top edge of the panel away from the
EMI shield.
922-7023
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 50
Note: If replacing a bad LCD display, you will also need to remove the lower EMI shield
(if still attached), the display panel mounting brackets, and the LVDS cable as follows.
5.
If attached, peel the lower EMI shield off the bottom edge of the display panel.
6.
Using a torx T10 screwdriver, push the tape aside and remove two screws from the left side
panel mounting bracket. Repeat for the other side.
7.
Peel back the tape where shown below, and disconnect the two white inverter-to-display
cable connectors.
92-7158
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 51
8.
To access the LVDS cable connector, peel back the black mylar tape that partially covers the
LVDS connector.
9.
Remove the tape securing the LVDS connector to the panel connector.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 52
10. Pinch together the connector locking levers, and disconnect the LVDS cable connector.
11. Return the panel to Apple.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 53
Replacing the LCD Display
1.
Replace the LVDS cable on the rear of the display panel.
2.
Secure the LVDS cable with tape.
3.
If you are replacing the display, a piece of black mylar is enclosed in the box with the display
module. The dotted lines below show the correct placement of the mylar. Note: The LVDS
locking lever (on one side) should be covered by the mylar when positioned correctly.
(
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 54
922-7158
922-7023
4.
Replace the right panel mounting bracket on the display panel with two screws.
5.
Replace the left bracket on the display panel with two screws.
6.
Connect the two inverter-to-display cable connectors and tape them to the back of the
display panel. Tape the middle inverter cable to the back of the display as well.
7.
Turn over the panel. If the lower EMI shield was removed, reattach the lower EMI shield
across the bottom of the panel.
8.
Position the panel into the rear housing. Make sure the inverter cable and the LVDS cable are
accessible and not tucked under the panel.
9.
Secure the panel with four T10 mounting screws.
10. Connect the inverter cable connector to the logic board.
11. Connect the LVDS cable connector to the logic board and secure it with two T6 screws.
922-7010
12. Fold the EMI tape firmly over the left, top, and right edges of the display panel. Use the black
stick to adhere the tape firmly and rub out wrinkles.
13. Replace the lower EMI shield.
14. Replace the front bezel.
15. Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Display Panel 55
LVDS Display Cable
Tools
No tools are required to remove the LVDS (Low Voltage Differential Signaling) cable.
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD Display
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — LVDS Cable 56
Remove the LVDS Cable
1.
Locate the LVDS cable on the back side of the display panel. Remove the piece of tape
(circled) that secure the cable to the panel. To access the connector, peel back the black
mylar tape that partially covers the LVDS connector.
2.
Remove the tape securing the LVDS connector to the panel connector.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — LVDS Cable 57
3.
Pinch together the connector locking levers, and disconnect the LVDS cable connector.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — LVDS Cable 58
Replacing the LVDS Cable
1.
Position the LVDS cable on the back of the display panel as shown.
2.
Connect the LVDS cable connector. When connected correctly the locking levers will secure
the connector and it cannot be disconnected without depressing the levers.
3.
Secure the LVDS cable to the panel with one strip of tape.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — LVDS Cable 59
4.
Replace the display panel. Note: If you are replacing the display, a piece of black mylar is
enclosed in the box with the display module. The dotted lines below show the correct
placement of the mylar. The LVDS locking lever (on one side) will be covered by the mylar
when positioned correctly.
922-7023
(
5.
Replace the lower EMI shield.
6.
Replace the front bezel.
7.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — LVDS Cable 60
Inverter
Tools
Removing the inverter requires using a flat-blade screwdriver
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD Display
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Inverter 61
Removing the Inverter
1.
Remove three pieces of tape that secure the inverter cables to the back of the display panel,
and disconnect the two white inverter connectors shown.
2.
Using a flat-blade screwdriver as shown, pry up the inverter to remove it from inside the
display panel mounting bracket.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Inverter 62
Replacing the Inverter
1.
Insert the long, black inverter cable through a hole at the back center of the right mounting
bracket, and press the sticky side of the replacement inverter onto the back edge of the
bracket.
2.
Connect the inverter-to-display cables and tape them to the back of the display panel.
.
3.
Replace the display panel.
4.
Replace the lower EMI shield.
5.
Replace the front bezel.
6.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Inverter 63
Speakers
Tools
•
•
Torx T10 screwdriver (magnetized)
Torx T6 screwdriver (magnetized)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD Display
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Speaker 64
Removing the Speakers
1.
Using a T10 torx screwdriver, remove the screws from the left and right speakers.
Replacement Note: The longer of the two speaker mounting screws is used to secure the
left speaker; the shorter screw secures the right speaker.
2.
Lift the speakers straight up and disconnect the speaker cable under the right speaker.
922-7067
922-7068
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Speaker 65
Replacing the Speakers
1.
Connect the speaker cable connector to the logic board.
2.
Install the speakers and route the speaker wire above the heatsink and around the fan.
3.
Secure the right speaker with the shorter of the two mounting screws.
4.
Secure the left speaker with the longer of the two mounting screws.
5.
Replace the display panel.
6.
Replace the EMI shield.
7.
Replace the front bezel.
8.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Speaker 66
Optical Drive
Tools
•
•
•
Torx T10 screwdriver (magnetized)
Torx T6 screwdriver (magnetized)
Needlenose pliers (with teeth)
Preliminary Step
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD Display
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive 67
Removing the Optical Drive
1.
Disconnect the sensor cable from the temperature sensor on top of the optical drive and
remove the two T10 screws from the optical drive clip on the logic board.
2.
Note: Make sure to use a needlenose pliers with teeth to remove the optical drive. The pliers
must have a textured surface to properly grasp the optical drive release tabs.
922-6842
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive 68
3.
Locate the black tabs at each side of the plastic optical drive mounting bracket. Starting
at the release tab that is furthest from the logic board, grasp the tab with needlenose
pliers, and flex the tab toward the optical drive flexible cable. (Note: This graphic shows a
different iMac model, but the removal procedure is the same for each model.) Use one finger
underneath the edge of the optical drive to gently lift up that corner of the drive.
Caution: Never press down on or grasp the body (silver) of the optical drive when removing
or installing it. Depressing the body of the optical drive could damage the mechanism. Grasp
the optical drive by its mounting bracket only.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive 69
4.
Warning: iMac main logic boards returned with physical damage such as scratches, fractures,
or broken or missing components caused by improper servicing may be classified as
customer abuse. When using a tool to release the latches, be careful not to apply pressure to
the logic board or it may be damaged.
While avoiding the logic board, grasp the tab with needlenose pliers, and flex the tab toward
the optical drive. Use one finger underneath the rear edge of the optical drive to gently tilt
up the end of the drive and remove the optical drive out of the housing. Note: This graphic
shows a different iMac model, but the removal procedure is the same.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive 70
5.
Lift the rear of the drive and pull the front bezel of the drive straight back and out of the disc
opening in the rear housing.
6.
If replacing a bad optical drive, use a T6 torx screwdriver to remove two optical drive board
mounting screws. Disconnect and keep the board for installation on the replacement drive.
7.
If replacing a bad optical drive, also remove the temperature sensor from the top of the
drive. Discard the sensor—the replacement drive comes with a new sensor already installed.
922-7656
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive 71
Replacing the Optical Drive
1.
If removed, install the optical drive board to the optical drive with two T6 screws.
2.
Insert the optical drive “bezel-end-first” into the opening in the housing. Be sure to align the
two guide holes in the front bezel with guide posts at each end of the bezel opening.
922-7656
Push down on the black mounting bracket to lock the optical drive securely into place on
the chassis.
Caution: Never press down on or grasp the body (silver) of the optical drive when removing
or installing it. Depressing the body of the optical drive could damage the mechanism. Grasp
the optical drive by its mounting bracket only.
3.
Secure the optical drive board to the logic board with the metal mounting clip and two T10
screws.
4.
Connect the optical cable (593-0324) to the optical sensor on one end and to the logic board
on the other end.
5.
Replace the display panel.
6.
Replace the lower EMI shield.
7.
Replace the front bezel.
8.
Replace the access door.
922-6842
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive 72
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive 73
Hard Drive
Tools:
•
•
•
Torx T10 screwdriver (magnetized)
T8
Flat-blade screwdriver
Preliminary Steps
Before you remove:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
Part Location
iMac (17-inch Mid 2006/Late 2006 CD ) Take Apart — Hard Drive 74
Remove the Hard Drive
1.
Position yourself at the base of the computer closest to the stand.
2.
Pull in on the edge of the mounting bracket until you feel it release from the chassis. Pull
HARD! The hard drive bracket will release on the end near your hands.
3.
Disconnect the hard drive power and data cables. Set the hard drive aside.
iMac (17-inch Mid 2006/Late 2006 CD ) Take Apart — Hard Drive 75
4.
Note: If you are replacing a bad hard drive, remove the mounting bracket and the mounting
pins shown in the following steps before returning the bad drive to Apple.
5.
Using a T10 torx screwdriver, remove two screws and the mounting bracket from the drive.
6.
Using a T8 torx screwdriver, remove two mounting pins from the other side of the drive.
922-7019
922-7001
iMac (17-inch Mid 2006/Late 2006 CD ) Take Apart — Hard Drive 76
Replacing the Hard Drive
922-7019
922-7001
1.
If necessary, install two mounting pins on side of the hard drive mounting bracket.
2.
If necessary, install the mounting bracket to the top of the hard drive with two screws.
3.
Connect the hard drive power and data cables.
4.
Insert the hard drive mounting pins and position the drive on the chassis. Make sure the
hard drive power and data cables are routed correctly and don’t get pinched as you lower
the drive into the chassis. Press down on the mounting bracket to lock it in place on the
chassis.
5.
Replace the display panel.
6.
Replace the lower EMI shield.
7.
Replace the front bezel.
8.
Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD ) Take Apart — Hard Drive 77
iMac (17-inch Mid 2006/Late 2006 CD ) Take Apart — Hard Drive 78
Power Supply
The iMac (17-inch MId 2006/Late 2006 CD) computer was built with two versions of the power
supply:
•
Version 1: iMac (Mid 2006) power supply
•
Version 2: iMac (Early 2006) power supply
This procedure provides instructions for replacing both versions.
Note: The power supplies must be replaced like for like.
Tools
Removing the power supply requires using the following tools:
•
Torx T8 screwdriver (magnetized)
•
Torx T10 screwdriver (magnetized)
•
Black stick
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 79
Part Location
Version 1 Power Supply (661-4018)
(
Version 2 Power Supply (661-3780)
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 80
About the Power Supply
Warning: When the iMac is under power, be aware that the power supply contains high voltages
that pose a potential hazard to your personal safety. Never work on or near the power supply
with the unit powered on, and as a further precaution always make sure the unit is unplugged
when working on it with the front bezel removed.
WARNING: HIGH VOLTAGE
Text or photographs marked by this symbol indicate that a potential hazard to your personal
safety exists from a high voltage source.
The AC/DC power supply board is a high voltage source with the unit under power, and remains
powered up whenever the system is plugged in, whether or not the system is turned on. Use
extreme caution when troubleshooting the system with the front bezel removed.
• Disconnect power to the system before performing maintenance.
• Don’t work alone. In the even of an electrical shock it is important to have another
individual present who can provide assistance.
• Keep one hand in your pocket when working on any iMac that is plugged in. This will
help ensure that your body does not provide a path to ground in the event that you
accidentally make contact with the line voltage.
• Don’t wear jewelry, watches, necklaces, or other metallic articles that could present a risk
if they accidentally make contact with the power supply circuitry.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 81
Removing the Power Supply
Version 1 Power Supply (661-4018)
1. WARNING: HIGH VOLTAGE
Disconnect the AC power inlet connector on the left and the power supply-to-logic board
connector on the right. Note: The power supply connector is on the underside of the logic
board. See the next photo for another view of the connector underneath the logic board.
2.
Rotate the computer so that the stand is away from you. Locate the power supply connector
underneath the logic board. Use a black stick to release the connector.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 82
3.
Using a T8 screwdriver, remove the two self-tapping screws on the left side of the power
supply board and the two machine screws on the right side of the board. Note: Self-tapping
screw labeled S1 is longer than self-tapping screw S2.
4.
Remove the power supply from the enclosure.
922-7066
922-7654
(S2 in photo
922-7159 (S1
in photo)
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 83
Version 2 Power Supply (661-3780)
1. WARNING: HIGH VOLTAGE
Disconnect the short AC power inlet connector on the right side of the power supply board,
and the power supply-to-logic board connector at the top of the board.
2.
Using a T10 screwdriver, Remove the T10 AC power inlet ground-to-chassis screw.
922-7069
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 84
3.
Using a T10 screwdriver, remove the three self-tapping screws on the top and left sides of the
power supply board and the one machine screw on the lower right corner of the board.
4.
Remove the power supply from the enclosure.
5.
If you are replacing the power supply-to-logic board cable, disconnect the cable from the
logic board and remove the cable from the enclosure.
Note: To disconnect the cable, do the following:
• Rotate the computer so that the stand is away from you.
• Locate the power supply connector underneath the logic board.
• Use a black stick to release the connector.
922-7066
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 85
Replacing the Power Supply
Power Supply (661-4018)
1. WARNING: HIGH VOLTAGE
Position the power supply loosely in its mounting location.
2.
Connect the power supply-to-AC power inlet cable. Tuck the cable beneath the chassis and
away from the hard drive bay.
3.
Connect the power supply-to-logic board cable to the underside of the logic board.
4.
Install the four power supply screws, starting with the machine screw in the lower right
corner of the power supply. Then install the other screws (see photo above for locations).
5.
Replace the hard drive.
6.
Replace the display panel.
7.
Replace the lower EMI shield.
8.
Replace the front bezel.
9.
Replace the access door.
Power Supply (661-3780)
1. WARNING: HIGH VOLTAGE
Position the power supply loosely in its mounting location.
2.
Connect the power supply-to-AC power inlet cable. Tuck the cable beneath the chassis and
away from the hard drive bay.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Power Supply 86
Logic Board
Tools
Removing the optical drive requires using the following tools:
•
Torx T10 screwdriver (magnetized)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Logic Board 87
Removing the Logic Board
1.
Disconnect the ten cables from the connectors on the logic board. Note: The speakers would
already be removed.
2.
Using a T10 torx screwdriver, remove the screws from the logic board. Note the locations of
the three self-tapping screws (marked by and “S” in the photo). The rest of the screws are
machine screws.
922-6800
922-6842
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Logic Board 88
3.
Rotate the unit so the power supply is in the bottom right corner and the optical drive is on
your left. With a black stick, disconnect the power supply cable on the underside of the logic
board.
4.
Pull the board toward you and slightly lift the board up. Note: The I/O ports fit tightly into
the port hole openings on the rear cover. You may have to fidget with the board a bit to free
the ports from the rear cover. Remove the logic board out of the rear housing.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Logic Board 89
Replacing the Logic Board
1.
Pull all cables up and away from the logic board bay and gently place down the logic board
so that all screw holes are aligned with screw mounts in the chassis.
Replacement Note: The logic board should rest on the screw mounts without any binding
or bowing—if it doesn’t, adjust any cables that are interfering with the logic board.
2.
Install the optical drive.
3.
Secure the logic board by installing the machine screws, and then installing three selftapping screws, marked with an “S.”
4.
Connect all the cables. Note: The speaker cable is attached under the right speaker.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Logic Board 90
5.
Replace the hard drive.
6.
Replace the speakers.
7.
Replace the display panel.
8.
Replace the lower EMI shield.
9.
Replace the front bezel.
10. Replace the memory.
11. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Logic Board 91
CPU Fan
Tools
No tools are required to remove the CPU fan.
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — CPU Fan 92
Removing the CPU Fan
1.
Lift the CPU fan off the white mounting posts.
Replacing the CPU Fan
1.
Align the CPU fan with the two mounting posts in the rear housing, and push it straight
down onto the posts. Note: Route the antenna cable under the fan (as shown above), but
pull it aside (to the left side) when installing the logic board.
2.
Replace the logic board.
3.
Replace the optical drive.
4.
Replace the hard drive.
5.
Connect the CPU fan cable and the rest of the cables to the logic board.
6.
Replace the speakers.
7.
Replace the display panel.
8.
Replace the lower EMI shield.
9.
Replace the front bezel.
10. Replace the memory.
11. Replace the access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — CPU Fan 93
Optical Drive Fan
Tools
No tools are required to remove the optical drive fan.
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive Fan 94
Remove the Optical Drive Fan
1.
Lift the optical drive fan straight up and off three mounting posts.
Replace the Optical Drive Fan
1.
Align and install the optical drive fan on three mounting posts. Push it down snug onto the
posts.
2.
Replace the logic board.
3.
Replace the optical drive.
4.
Replace the hard drive.
5.
Replace the speakers.
6.
Replace the display panel.
7.
Replace the lower EMI shield.
8.
Replace the front bezel.
9.
Replace the memory.
10. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Optical Drive Fan 95
Hard Drive Fan
Tools
No tools are required to remove the optical drive fan.
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart —Hard Drive Fan 96
Remove the Hard Drive Fan
1.
Carefully pull the hard drive fan cable from under the chassis.
2.
Lift the hard drive fan straight up and off three mounting posts.
Replacing the Hard Drive Fan
1.
Route the hard drive fan cable under the metal chassis and above the I/O ports.
2.
Align and install the hard drive fan on mounting posts. Push it down snug onto the posts.
3.
Replace the logic board.
4.
Replace the optical drive.
5.
Replace the hard drive.
6.
Replace the speakers.
7.
Replace the display panel.
8.
Replace the lower EMI shield.
9.
Replace the front bezel.
10. Replace the memory.
11. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart —Hard Drive Fan 97
AC Power Inlet
Tools
Removing the AC power inlet requires using the following tools:
•
Torx T10 screwdriver (magnetized)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
•
Hard drive fan
Part Location
iMac (17-inch Mid 2006/Late 2006) Take Apart — AC Power Inlet 98
Removing the AC Line Filter
1.
Using a torx T10 screwdriver, remove the three self-tapping screws from the power inlet.
2.
Using a torx T10 screwdriver, remove the machine screw from the power inlet ground cable.
3.
Peel the EMI tape off the power inlet.
4.
Disconnect the power inlet-to-power supply cables and unlace the power inlet cable from
beneath the chassis.
922-6800
922-7069 (x1)
iMac (17-inch Mid 2006/Late 2006) Take Apart — AC Power Inlet 99
Replacing the AC Line Filter
1.
Install the AC power inlet on the rear housing screw mounts with three self tapping screws.
2.
Install the power inlet ground cable to the chassis with a machine screw.
3.
Route the power inlet cable beneath the chassis as shown in the photo above, and connect
it to the power supply.
4.
Using EMI tape, securely tape the top and bottom edges of the AC power inlet to the rear
housing.
5.
Replace the hard drive fan.
6.
Replace the logic board.
7.
Replace the optical board
8.
Replace the hard drive.
9.
Replace the speakers.
10. Replace the display panel.
11. Replace the lower EMI shield.
12. Replace the front bezel.
13. Replace the memory.
14. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006) Take Apart — AC Power Inlet 100
iMac (17-inch Mid 2006/Late 2006) Take Apart — AC Power Inlet 101
Ambient Light Sensor Board
Tools
No tools are required to remove the ambient light sensor board.
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
•
Logic board
Part Location
iMac (17-inch Mid 2006/Late 2006) Take Apart — ALS Board 102
Removing the Ambient Light Sensor Board
1.
Remove the rubber bumper from between the chassis and the board.
2.
With a black stick, pry the ambient light sensor board from the frame.
iMac (17-inch Mid 2006/Late 2006) Take Apart — ALS Board 103
Replacing the Ambient Light Sensor Board
1.
Press the sticky side of the ambient light sensor board to the bottom inside edge of the rear
housing.
2.
Install the rubber bumper between the back of the ambient light sensor board and the
chassis.
3.
Replace the logic board.
4.
Replace the optical drive.
5.
Replace the hard drive.
6.
Replace the speakers.
7.
Replace the display panel.
8.
Replace the lower EMI shield.
9.
Replace the front bezel.
10. Replace the memory.
11. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006) Take Apart — ALS Board 104
iMac (17-inch Mid 2006/Late 2006) Take Apart — ALS Board 105
Clutch Mechanism
Tools
Removing the clutch requires using the following tools:
•
Torx T10 screwdriver (magnetized)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
• Hard drive fan
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Clutch 106
Removing the Clutch
1.
Carefully peel the three pieces of EMI tape up and off the metal clutch cover.
2.
Remove the metal clutch cover.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Clutch 107
3.
Using a T10 torx screwdriver, remove the four clutch mounting screws.
4.
Stand up the unit and remove the four T10 clutch-to-stand mounting screws. Separate the
clutch from the rear housing and the stand.
922-7020
922-7012
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Clutch 108
Replace the Clutch
1.
Make sure the stand is erect and the end of the stand is inserted through the mounting hole
in the rear housing.
2.
Position the clutch on the stand with the spring at bottom right. Install the four long, clutchto-stand mounting screws.
3.
Adjust the clutch so that its chassis mounting holes align, and install the four machine
screws that secure the clutch to the chassis.
4.
Replace the optical drive.
5.
Replace the hard drive fan.
6.
Replace the logic board.
7.
Replace the speakers.
8.
Replace the display panel.
9.
Replace the lower EMI shield.
10. Replace the front bezel.
11. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Clutch 109
AirPort Antenna
Tools
Removing the wireless antenna requires using the following tools:
•
Flat-blade screwdriver
•
Black stick (or other nonconductive nylon or plastic flat-blade tool)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
• CPU fan
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — AirPort Antenna 110
Removing the AirPort Extreme Antenna
1.
Carefully peel back the tape (circled) and the EMI backing from the top left inside corner of
the rear housing as shown below. Peel back just enough EMI backing to access the antenna
board. Using a flat-blade screwdriver, pry the antenna board off the rear housing.
2.
Remove any tape that secures the antenna cable to the rear housing.
3.
Pull the antenna cable through the access hole in the EMI shield at the top, near the antenna
board.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — AirPort Antenna 111
Replacing the AirPort Extreme Antenna
1.
Locate the antenna mounting channel inside the left corner of the rear housing, and position
the antenna board in the channel. Compress the sticky side of the antenna board to the
housing until securely fastened.
2.
Route the antenna cable through the EMI shield and on top of the EMI.
3.
Secure the antenna cable to the housing with two pieces of tape.
4.
Replace the CPU fan.
5.
Replace the logic board.
6.
Replace the DC power supply.
7.
Replace the optical drive.
8.
Replace the hard drive.
9.
Replace the speakers.
10. Replace the display panel.
11. Replace the lower EMI shield.
12. Replace the front bezel.
13. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — AirPort Antenna 112
Camera Cable
Tools
No tools are required to remove the camera cable.
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive (if you feel it necessary)
• Optical drive
Part Location
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Cable 113
Removing the Camera Cable
1.
Disconnect the two camera board cables from the logic board.
2.
Disconnect the camera cables and pull the cable through the access hole at the top of the
EMI shield. Remove the camera cable from the rear housing.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Cable 114
Replacing the Camera Cable
1.
Insert the camera cables through the access hole in the upper EMI shield. Replace any
Kapton tape or EMI grounding tape. The EMI tape should secure the cable to the metal
chassis.
2.
Route the camera cable around the hard drive and under the chassis (as shown). Connect
the two cables to the connectors on the logic board.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Cable 115
3.
Replace the hard drive (if removed).
4.
Replace the optical drive.
5.
Replace the display panel.
6.
Replace the lower EMI shield.
7.
Replace the front bezel.
8.
Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Camera Cable 116
Chassis
Tools
Removing the chassis requires using the following tools:
•
Torx T10 screwdriver (magnetized)
Preliminary Steps
Before you begin, follow steps for removing the following:
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
• CPU fan
• Hard drive fan
• Optical fan
• AC Power Inlet
• Clutch mechanism
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Chassis 117
Part Location
Removing the Chassis
1.
With all the other parts removed, use a T10 torx screwdriver to remove the self-tapping
screws circled below. Lift the chassis from the rear housing.
922-6850
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Chassis 118
Replacing the Chassis
1.
Position the chassis on the rear housing and install the self-tapping mounting screws.
2.
Replace the clutch mechanism.
3.
Replace the AC power inlet.
4.
Replace the three fan fans.
5.
Replace the power supply.
6.
Replace the hard drive.
7.
Replace the optical drive.
8.
Replace the logic board.
9.
Replace the speakers.
10. Replace the display panel.
11. Replace the lower EMI shield.
12. Replace the front bezel.
13. Replace the memory access door.
iMac (17-inch Mid 2006/Late 2006 CD) Take Apart — Chassis 119
Rear Housing
Tools
No tools are required to remove the rear housing in addition to those referenced below.)
Remove and Replace the Rear Housing
To remove the rear housing, follow steps for removing the parts below. Reverse these steps to
replace the rear housing.
• Access door
• Front bezel
• Lower EMI shield
• LCD display
• Hard Drive
• Optical drive
• Speakers
• Memory
• Logic board
• CPU fan
• Hard drive fan
• Optical fan
• AC Power Inlet
• Clutch mechanism
• Chassis
• Ambient Light Sensor
iMac (17-inch Mid 2006/Late 2006 CD ) Take Apart — Rear Housing 120
 Service Source
Troubleshooting
iMac (17-inch Mid 2006) and iMac (17-inch Late 2006 CD)
© 2006 Apple Computer, Inc. All rights reserved.
General Information
Serial Number
iMac serial number is located on the bottom of the computer stand.
Power On Self Test (POST)
Intel-based Mac computers rely on a combination of tones and blinking LEDs to display Power
On Self Test (POST) error codes.
•
If the computer detects out-of-specification or no SDRAM or the RAM installed does not
meet the appropriate specifications, the screen will remain black but the power LED on the
front of the computer will blink once per second to signal the error. This error condition may
be due to physically damaged RAM, installing the incorrect type of RAM, or not having RAM
installed.
•
Some RAM may appear to pass the Power-On-Self-Test (POST) but still cannot be used by the
operating system. In this case, the computer will display a gray screen, sound three tones and
blink the power LED on the front of the computer three times, pause, and repeat the blinking
until the computer is turned off.
•
The solution to both of these situations is to first re-seat the memory and test the computer
again. If the memory fails the POST test again, try memory that has been verified to work
correctly on another system (i.e., “known-good”) or order new memory.
iMac (17-inch Mid 2006/Late 2006 CD) Troubleshooting — General Info 122
DDR Memory
The iMac computer has two SDRAM slots in the bottom of the computer. The iMac ships from the
factory with at least 512 MB of DDR2 SDRAM, installed as a 256 MB DIMM in the top slot and a
256 MB DIMM in the bottom slot. (The computer may come with more RAM, depending on how
the computer was ordered from Apple.)
Although you can install a single SO-DIMM, it is recommended that memory be installed in
matched pairs for improved graphics performance.
The maximum amount of RAM you can install in the iMac is 2 GB total (a 1 GB SO-DIMM in each
of the two slots). You can use small-outline dual inline memory modules (SO-DIMMS) of 512 MB or
1 GB that meet all of these criteria:
•
PC2-5300
•
unbuffered
•
nonparity
•
200-pin
•
667 MHz DDR2 SDRAM
Note: DIMMs with any of the following features are NOT supported in this iMac:
•
registers or buffers
•
PLLs
•
ECC
•
parity
•
EDO RAM
•
iMac (17-inch Mid 2006/Late 2006 CD) Troubleshooting — General Info 123
How to Reset the System Management Controller (SMC)
The System Management Controller (SMC) is a chip on the logic board that controls all power
functions for your computer. If your computer is experiencing any power issue, resetting the SMC
may resolve it. The SMC controls several functions, including:
•
Telling the computer when to turn on, turn off, sleep, wake, idle, and so forth.
•
Handling system resets from various commands.
•
Controlling the fans.
Note that resetting the SMC does not reset the PRAM. Resetting the SMC will not resolve issues
in which your computer is unresponsive—in these situations, restarting your computer will
generally suffice. If your computer isn’t responding, perform these steps one at a time, in this
order, until the issue has been resolved:
1.
Force Quit (Option-Command-Escape).
2.
Restart (Control-Command-Power).
3.
Force Shut Down (press the power button for 10 seconds).
Resetting the SMC can resolve some computer issues such as not starting up, not displaying
video, sleep issues, fan noise issues, and so forth. If your computer still exhibits these types of
issues after you’ve restarted the computer, try resetting the SMC.
To reset the SMC on an iMac
1.
From the Apple menu, choose Shut Down (or if the computer is not responding, hold the
power button until it turns off).
2.
Unplug all cables from the computer, including the power cord.
3.
Wait at least 15 seconds.
4.
Plug the power cord back in, making sure the power button is not being pressed at the time.
5.
Reconnect your keyboard and mouse to the computer.
6.
Press the power button on the back to start up your computer.
iMac (17-inch Mid 2006/Late 2006 CD) Troubleshooting — General Info 124
Diagnostic LEDs
The iMac has three built-in diagnostic LEDs and a front LED on the main logic board (shown
below) that can help you to troubleshoot the computer.
To Access the LEDs:
1.
Follow the take apart instructions to remove the RAM access door, front bezel, and lower
EMI shield.
2.
Locate the SO-DIMM slot and LVDS video connector. The three troubleshooting LEDs 1, 2,
and 3 are located to the right of the LVDS cable connector, under a square of black tape. Peel
back the tape to view the LEDs. Note that the LEDs are marked 1, 2, 3 from left to right, as
show below. An additional front LED is located in an opening at the center of the right
speaker, as shown below.
iMac (17-inch Mid 2006/Late 2006 CD) Troubleshooting — General Info 125
LED #1
Indicates that the trickle voltage from the power supply has been detected by the main
•
logic board. This LED will remain ON whenever the iMac (Mid 2006 17-inch) is connected to
a working AC power source. The LED will remain on even when the computer has been shut
down or put to sleep. The LED will turn off only if the AC power source is disconnected or the
power supply is faulty.
LED #2
Indicates that the main logic board has detected proper power from the power supply when
•
the computer is turned on. This LED will be ON when the computer is turned on and the
power supply is working correctly.
LED #3
Indicates that the computer and the LCD display are communicating. This LED will be ON
•
when the computer is turned on and video signal is being generated.
Front LED
Indicates that the computer has power but no video signal (e.g., the computer is starting up
•
or the display has entered Sleep mode, turning off the video signal). This LED will pulse when
the entire system has entered Energy Saver mode.
iMac (17-inch Mid 2006/Late 2006 CD) Troubleshooting — General Info 126
Symptom Charts
How to Use the Symptom Charts
The Symptom Charts included in this chapter will help you diagnose specific symptoms related
to the product. Because cures are listed on the charts in the order of most likely solution, try
the cures in the order presented. Verify whether or not the product continues to exhibit the
symptom. If the symptom persists, try the next cure.
Note: If a cure instructs you to replace a module, reinstall the original module before you
proceed to the next cure.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 127
Power Issues
No Power
The iMac will not turn on. The display remains black and there are no sounds from the fans or
drives.
1. Verify the power outlet is good. Plug a different device into the socket to ensure there is power,
or plug the iMac into another outlet. Does the iMac power on now?
Yes: Resolved. Bad outlet.
No: Go on to the next step.
2. Check the power cord. Use a known good power cord. Does the iMac power on now?
Yes: Your power cord has failed. Replace the AC power cord.
No: Go on to the next step.
3. Check the connection of the power cord on both ends. Verify that the power cord is securely
plugged into both the AC outlet and back of the computer. Does the iMac power on now?
Yes: You may have a loose fit to your power cord. Replace the AC power cord and test.
No: Go on to the next step.
4. Follow instructions in the General Information chapter to reset the SMC. Does the iMac power
on now?
Yes: Issue resolved.
No: Go on to the next step.
5. Remove and reinstall the SO-DIMM memory modules. Does the iMac power on now?
Yes: Issue resolved.
No: Go on to the next step.
6. Remove the RAM access door, front bezel, and lower EMI shield to gain access to the three
diagnostic LEDs. See “Diagnostic LEDs” in the General Information chapter for complete
instructions on this procedure.
7. Plug the power cord into the iMac and the power cord into the AC outlet. Check to see if LED
#1 is On or Off.
LED #1 is On: This indicates that the power supply is getting good power from the AC outlet.
Go on to the next step.
LED #1 is Off: This indicates that either the power inlet assembly or the power supply should
be replaced.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 128
8. Press the power button. Check to see if LED # 2 comes On, comes on momentarily, or stays Off.
LED # 2 is On: The Power Supply is functioning. Go on to the next step.
LED # 2 comes on momentarily or stays Off: Replace the Power Supply.
9. At this point in the Power On process, you should hear a boot chime and see the front LED on
the computer light up. When the main logic board and LCD panel communicate to deliver video,
the front LED should go off, and LED # 3 should be on. Does the Front LED go off?
Yes: The LCD and main logic board have communicated. If there is no picture on the display,
follow “No Video” troubleshooting.
No: Your logic board is not communicating with LCD panel. Go on to the next step.
10. Check to see if LED # 3 is On or Off.
LED # 3 is On: The logic board is communicating with LCD panel. Follow “No Video”
troubleshooting.
LED # 3 is Off: The logic board is not communicating with LCD panel. Reseat the LVDS cable
and test again. If the issue persists, replace the main logic board.
Audible buzzing, whining, or ticking noise
The iMac contains several mechanical devices such as motors and fans that may make audible
buzzing, ticking, or whining noises when they are operating in a normal manner. The sounds will
vary depending on how the system is used.
When troubleshooting abnormal noises try the following:
1.
Verify that the computer is running a supported version of the Mac OS X operating system.
If an earlier version of the operating system has been installed then the fans may run at
excessive speeds.
2.
Determine that this noise is related to the computer by removing and shutting down all
other devices in the vicinity of the computer that could be causing a sound.
3.
Eject any media inserted into the optical drive. The optical drive will make a variety of normal
sounds when accessing the optical media.
4.
Quit all applications and test the computer again. Processor intensive applications may cause
the fans to run at a higher RPM and therefore be more audible.
5.
Boot to the latest version of Apple Service Diagnostic for iMac (Mid-2006) and select the EFI
test suite by holding down the D key during startup. The diagnostic tests fan speeds and
thermal sensor functionality. Should tests fail, replace any parts indicated by the diagnostic.
6.
Reboot the computer and check the computer again. If the noise persists and is unusually
loud, contact Apple Technical Support.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 129
No Video
No Video, No Boot Chime, White LED ON (Symptom 1)
The iMac will turn on (indicated by the front LED ON), but there is NO boot chime and No Video
on the display. The faint sound of the fans, hard drive, and optical drive may also be heard.
1. Follow instructions in the “General Information” chapter to reset the SMC. Does the computer
display video after successfully resetting the SMC?
Yes: Problem solved.
No: Continue to next step.
2. Verify that only supported SDRAM memory has been installed and that it has been installed
correctly. Unsupported and/or defective memory can prevent the iMac from booting. It may be
necessary to install known good memory for testing purposes and replace any unsupported
or defective SO-DIMM’s identified during this process. Does the computer display video after
verifying and/or replacing the memory with known good memory?
Yes: Problem solved. Verify full system functionality before return the system to the customer.
No: Replace the logic board.
No Video, Boot Chime heard, White LED ON (Symptom 2)
The iMac will turn on, the boot chime can be heard, a white LED appears on the front bezel and
sounds from the fan or drive activity can be heard, but the display has no picture or color.
1. Check if the computer is sleeping. Press the space bar to wake the computer from sleep mode.
Did the computer wake from sleep?
Yes: Put the computer to sleep from the Apple menu and wake the computer again to test.
Check Energy Saver setting to see when the computer has been designated to sleep.
No: Continue to next step.
2. Reset your computer’s PRAM (Parameter RAM):
- If your iMac is on, turn it off by holding the power button until the unit powers off. You
should hear the fans go quiet.
While the computer is off, with your left hand, hold down the Apple key, the Option key
next to it, and the letter “R” key on the keyboard. When you have these keys all pressed
down, push the power button with your right hand and then quickly move that hand
to hold down the letter “P” on the keyboard. Keep these four keys pressed while the
computer starts up.
Make sure you hold down the four keys (P - R - Apple - Option) while the computer is
starting up. When you hear the computer’s start up chime for the second time, you can
let go of the keys on the keyboard.
- If you didn’t hear at least two startup chimes, go to the top of this section and begin
again. It’s important that you hear two startup chimes when performing this procedure.
This indicates that you have successfully reset the computer’s PRAM (Parameter RAM).
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 130
3. Does the computer display video after successfully resetting the computer’s PRAM?
Yes: Restart the computer from the Apple menu and make sure the computer is now
working correctly.
No: Continue to next step.
4. Make sure the machine is powered off; power off the machine by holding in the Power Button
on the rear of the machine. Turn on the machine. Observe the white LED on the front bezel
during startup; it should go out after a few moments. Did the LED go off?
Yes: If the LED went off, this indicates that the main logic board has communicated with the
LCD display for video signal and your main logic board should be good. You can confirm by
connecting an external monitor and checking to see that you have video out. Go to Step 7.
No: Continue with the next step to reset system power management (SMC).
5. Follow instructions in the “General Information” chapter to reset the SMC. Does the computer
display video after successfully resetting the SMC?
Yes: Press and hold the power button until the computer powers off. Start the computer
again and confirm that front LED is reliably going off. If the computer still has no video but
the LED is reliably going off, continue with step 7.
No: Go to the next step.
6. Unplug the iMac and remove the SDRAM. Replace with known good SDRAM. Plug the iMac
back in and power the unit on. Does the front LED go off after a few moments now?
Yes: Replace the original SDRAM and test again. If the front LED does not go off with the only
the original SDRAM installed, replace the SDRAM. If the LED is now reliably going off after a
few moments, but yet you still do not have any video, go to step 7.
No: If the LED remained on, the main logic board is not communicating with the LCD panel
to generate video. Replace the main logic board.
7. With the LED going off, you may have a No Backlight condition or an LCD failure. In a dim room,
turn the display at an angle to you and look closely at the display. Is the display completely black
or can you see a dim, purplish light or glow to the display?
- Completely black: Replace the inverter
- Dim purplish light or glow: Replace the LCD panel.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 131
Starts Up to Black Screen or No Video (iMac 17-inch Mid 2006 only)
Refer to Knowledge Base article 303870 or follow the procedure below.
An iMac (17-inch Mid 2006) may start up to a black screen (with no video). It may also occur if
you have just changed the brightness of the display. If this happens, the computer will sound like
it’s starting up, but the display stays black. In this case, if you hold down the power key to shut
the computer down and then try to start it up again, the situation would not be resolved.
1.
Shut down the computer by pressing and holding the power button on the back of the iMac
until it turns off.
2.
Reset the NVRAM. The computer should display a grey screen, then start normally.
3.
To prevent it from happening again, update the system software to Mac OS X 10.4.8 .The
update will require that you restart your computer after installing.
Note: If you choose not to install the Mac OS X 10.4.8 software update, the following steps
will also prevent the issue from occurring again:
1.
From the Apple menu, choose System Preferences.
2.
Choose the Displays pane of System Preferences.
3.
Temporarily select a resolution other than the 1440 x 900 native resolution.
4.
Switch back to your preferred resolution and close System Preferences.
Display is tinted another color.
1.
Reset the parameter RAM. Press the Command-Option-P-R keys. When you keep all the keys
held down, you will hear the startup chime over and over again (about every ten seconds)
until you let go. After you hear the second chime, you can let go of the keys.
Does the computer display video after successfully resetting the computer’s PRAM?
Yes: Problem resolved. Restart the computer from the Apple menu and make sure the
computer display is no longer tinted another color.
No: Continue to the next step.
2.
Connect an external monitor to the mini-VGA port. Does the external display exhibit the
same color tinting?
Yes: Replace the logic board.
No: Check the LVDS cable connection. If connected and same color tinting persists, replace
the LVDS cable. Does color tinting persist after changing the LVDS cable?
Yes: Replace the LCD display panel.
No: Problem solved. Restart the computer from the Apple menu and make sure the
computer display is no longer tinted another color.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 132
Display
When displaying a single color over the screen area, the LCD panel shows one or
more pixels that are not properly lit
Active-matrix LCD technology uses rows and columns of addressable locations (pixels) that
render text and images on screen. Each pixel location has three separate subpixels (red, green,
and blue) that allow the image to be rendered in full color. Each subpixel has a corresponding
transistor responsible for turning the subpixel on or off.
There are typically millions of these subpixels on an LCD display. For example, the LCD panel used
in the Apple Cinema HD display is made up of 2.3 million pixels and 6.9 million red, green, and
blue subpixels. Occasionally, a transistor does not work perfectly, which may result in the affected
subpixel being turned on (bright) or turned off (dark). With the millions of subpixels on a display,
it is quite possible to have a low number of faulty transistors on an LCD. Therefore, a certain
number of subpixel anomalies is considered acceptable. Rejecting all but perfect LCD panels
would significantly increase the retail price for products using LCD displays. These factors apply
to all manufacturers using LCD technology—not just Apple products.
To determine whether or not the display has an acceptable number of pixel anomalies, follow the
steps below:
1.
Set the display image to one of the following colors: all-white display, all-red display, all-green
display, or all-blue display.
2.
Using a jeweler’s loupe, pocket microscope, or other magnifying device, identify and count
each subpixel anomaly:
• Bright subpixel anomaly = subpixel that is always on
• Dark subpixel anomaly = subpixel that is always off
3.
Important: Check the number of subpixel anomalies with the following chart:
LCD Size
(inches)
17 to 20
Acceptable Number of Subpixel
Anomalies
Replace the Display
Bright
Dark
Both
Bright
Dark
Both
up to 4
up to 6
up to 8
5 or more
7 or more
9 or more
4.
If the number of subpixel anomalies exceeds the acceptable number listed in the chart,
replace the LCD panel.
5.
If the number of subpixel anomalies is acceptable, explain to the customer that the pixel
anomalies are within specifications, and no repair is necessary.
Important: Do not release the specifications to customers. Instead, inform them that a
certain number of subpixel anomalies is considered acceptable, and these factors apply to all
manufacturers using LCD technology—not just Apple products.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 133
Hard Drive
Flashing question mark, or an alternating question mark and Mac OS (face or a
folder)
Note: When troubleshooting hard drive problems it is a good idea, if possible, to back up any
important data. Some troubleshooting steps may require erasing the contents of the hard drive.
1.
Boot from the system CD that came with the computer, and open Disk Utility. Does the hard
drive show in Disk Utility?
Yes: Run Repair Disk and Repair Permissions to correct any directory and permissions issues.
Go on to Step 2.
No: Go to Step 3.
2.
Did Disk Utility successfully repair directory or permissions?
Yes: Restart the computer to the hard drive. Go on to Step 3.
No: Go to Step 3.
3.
Did the computer successfully start to the internal Hard Drive?
Yes: Run Apple Hardware Test version 3A108 or later for this machine and return to the
customer if it passes.
No: Boot the machine to Apple Hardware Test, version 3A108 or later, or to Apple Service
Diagnostic for iMac, version 3S106 or later.
4.
Did the machine successfully boot to the Diagnostic?
Yes: Run the test suites. No: Make sure you’re using the correct version of the Diagnostic, and that the disc is able to
boot another machine that it supports. If so, then try booting from an external optical drive.
If this is successful, you should replace the optical drive and retest the machine booting to
the diagnostic disc. 5.
Did the tests pass?
Yes: Reinstall the System Software that came with the computer and test. No: Replace the component (s) indicated by the test results. Hard Drive Issues
Note: The following information is for Intel-based and PPC Macintosh drive compatibility
Drives to be used in booting Intel-based Macintosh hardware should be formatted and
•
partitioned with an Intel-based Macintosh disk utility running on Intel-based Macintosh
hardware. That should ensure you get the correct default partition map and structure for
reliable booting.
Intel-based Macintosh CPUs in Target Disc Mode will only mount on PPC machines running
•
Mac OS X 10.4 or later, and may show one contiguous partition rather than separate
partitions on the host machine.
Always make sure to use the OS that came with the machine if you need to reinstall software
•
(ask the customer for the discs if necessary), and the diagnostics specifically designated for
that hardware.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 134
System hangs during normal startup process
1.
Boot from the system CD that came with the computer. Use Disk Utility to verify the hard
drive.
2.
Using Disk Utility, reformat the hard drive.
3.
Check all cable connections to and from the hard drive.
4.
Replace the hard drive data cable.
5.
Replace the hard drive.
6.
Replace the logic board.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 135
Optical Drive
CDs or DVDs don’t show up on the Desktop.
1.
Select Preferences from the Finder menu and make sure the option to show CDs, DVDs and
iPods is checked: in the General window as shown below.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 136
2.
Select System Preferences from the Apple menu and open the CDs & DVDs preferences
window. Make sure that audio CDs are set to launch iTunes and movie DVDs set to launch
DVD Player when those media are inserted, as shown below.
3.
Check that the drive can read discs normally. Insert an audio CD and check whether it shows
up on your desktop or launches iTunes.
Does the audio CD mount on the desktop or in iTunes?
Yes: The drive seems to read CD discs okay. Go on to Step 4.
No: Make sure the disc is readable by other computers. Try other CD discs. If none mount or
no audio CDs launch iTunes, replace the optical drive.”
4.
Eject the audio CD and insert the iMac Software Install and Restore DVDs that came with the
customer’s computer, or insert a DVD movie.
Does this disc show up on the desktop, or does the movie launch DVD Player? Yes: The computer is reading CD and DVD media. This may be related to a specific disc or
discs the customer is using and you should examine those discs.
No: The optical disc is reading CD media, but not DVD media. Try other DVD discs. If none
mount or movie DVDs do not launch DVD Player, replace the optical drive adapter board
5.
If after replacing the optical drive adapter board the drive still won’t mount any optical
media, replace the optical drive. If the issue persists, then replace the logic board.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 137
The computer won’t burn discs.
1.
Check whether the drive can read CDs and DVDs normally. Perform the steps above for “CDs
or DVDs don’t show up on the Desktop.”
2.
Try a test burn by creating a Burn Folder, as follows.
• In the Finder, choose “New Burn Folder” from the File menu.
• Open the Burn Folder, drag an item inside for testing, and click “Burn” in the upper right
corner of the window.
• When prompted, insert a blank disc and follow the dialog instructions.
Does the disc burn successfully (problem solved), fail with an error, or is the disc ejected?
3.
If the disc fails to burn with an error, check for these error messages.
Unknown Error -2147352480. See Knowledge Base article 25480 and 25750 for more
information.
Buffer underrun error. See Knowledge Base articles 25480 and 25750 for more information.
Unknown Error. If you see “Unknown Error” without “-2147352480”, you will want to see
Knowledge Base article 152224 for more information.
4.
If the blank disc is ejected, try another blank disc. If the issue persists, try another brand and
speed of blank media; if you’re using blank CD media, see if this happens with blank DVD
media. If the drive consistently rejects all blank media, or only rejects blank CD media while
accepting blank DVD media or vice versa, replace the optical drive adapter board and test.
Does the drive successfully burn to disc after replacing the optical drive adapter board?
Yes: Problem solved.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 138
No: Replace the optical drive. Does it burn correctly now?
Yes: Problem solved.
No: Replace the logic board.
Discs won’t insert.
1.
Is there a disc already in the drive?
Yes: Eject the disc before inserting another. Refer to Knowledge Base article 51008 - “iMac: If
You Can’t Eject a CD or DVD, or Open the Drive Tray”. If none of these options will eject the
disc, you may have to disassemble the drive to recover the disc. See Knowledge Base article
86382 - “Macintosh: How to Remove a Stuck Disc From a Slot-Loading Drive.”
No: Reseat the optical drive. Perform the “Optical Drive” procedure in Take Apart to reseat the
drive in the mounting aperture and reconnect the optical drive to the logic board.
2.
After reinstalling the optical drive, can you now insert a disc?
Yes: Issue resolved. Run diagnostics and return the system to the customer. No: Replace the optical drive adapter board. Yes: Problem solved. Run diagnostics and trying inserting a disc again.
3.
After replacing the optical drive adapter board, can you insert a disc now?
Yes: Issue resolved. Run diagnostics and return the system to the customer. No: Replace the optical drive.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 139
Optical disc constantly ejects
1.
Disconnect all peripheral devices, especially the mouse in cases where the disc is constantly
ejecting. Retest. If the issue is resolved, reconnect peripherals one-at-a-time until faulty
peripheral is identified.
2.
Try cleaning the disc. If the disc is dirty or scratched, it may not mount.
Is the issue resolved?
Yes: Problem solved.
No: Try a different disc. If the issue persists, go on to the next step.
3.
Boot from Apple Hardware Test (hold down the “D” key at startup). If you can boot to this
volume, run the Quick and Extended tests.
Does the unit pass the tests?
Yes: Restart to the internal hard drive and test again.
No: Replace the component (s) indicated by the test results. If you cannot boot to Apple
Hardware Test because it ejects, go on to step 4.
4.
Boot from the system install DVD (use Startup Manager, hold down the Option key at
startup). If you can boot from this volume, perform an Archive and Install with the Install
DVD that came with the computer and test.
Is the issue resolved?
.
Yes: Problem solved.
No: If you cannot boot to Apple Hardware Test or to the Install DVD because they eject,
reseat the optical drive adapter board to the logic board and retest.
6.
Replace the optical drive adapter board.
7.
Replace the optical drive.
8.
Replace the logic board
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 140
Fan Sound
Fans running at full speed after the computer turns on
The customer may have entered a diagnostic mode that causes the fans to run at full speed.*
Restarting the system will not restore normal fan operation. To solve the problem, the user or
technician should do the following:
1.
Shut down the system.
2.
Disconnect the power cord and wait 15 seconds.
3.
Reconnect the power cord and wait 5 seconds.
4.
Power on the system.
*Note: Customers reporting this symptom should be told to press the power button AFTER the
power cord has been fully inserted. Inserting the power cord while pressing the power button
will cause the fans to run at full speed.
Loud fan noise coming from inside the computer
The iMac has a trio of fans that circulate air throughout the system. It also includes temperature
sensors, and advanced thermal software that spins the fans fast or slow as needed. As the system
usage increases, the fans will adjust their speed using advanced thermal software to meet the
cooling needs of the system.
Under normal conditions, rotating fans will make a slight hum that varies in relationship with
their rotational speed and the amount of air that they are moving. In addition, the normal
functioning of the hard drive and optical drive will generate additional whirring and scratching
sounds that may be audible. All of these sounds are normal and do not indicate a failure with
your computer.
To begin troubleshooting a possible fan issue, we need to qualify the sound that you’re
experiencing.
1.
Does the sound occur only under specific light/heavy usage conditions?
Yes: CPU intensive applications such as iTunes, Garage Band, DVD Player, etc., or two or more
applications open at once will cause the fans to run at an increased rate making them more
noticeable. If the sound only occurs when one or more of these applications is running, this
is normal.
No: If the sound isn’t affected by CPU intensive application it may be due to other factors. Go
on to the next step.
2.
Is the sound always present, or does the sound vary?
The sound is always present: The normal functioning of the hard drive and optical drive will
generate additional whirring and scratching noises that may be audible. Check whether this
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 141
sound is related to one of the components. Go to step 4.
The sound varies: Under normal conditions rotating blowers will make a slight hum that
varies in relationship with their rotational speed and the amount of air that they are moving.
Let’s see if this is indeed the case. Go to Next Step.
3.
Are the fans making a normal humming sound that increases/decreases in relation to
processor usage? As the fans increase their speed to cool the system the sound level will
increase.
Launch the Activity Monitor application included with Mac OS X in the Utilities folder to
determine whether the noise corresponds with heavy usage of the CPU. Does fan activity
increase / decrease with the CPU Usage graph in Activity Monitor? Check by running CPU
intensive applications such as iTunes.
Yes: This is normal operation and none of the fans require replacement.
No: If the fan activity does not coincide with CPU usage, the sound you’re hearing may not
be fan activity. Go to the Next Step.
4.
The normal functioning of the hard drive and optical drive will generate additional whirring
and scratching noises that may be audible. We can isolate these noises by booting the
computer to the iMac Install Mac OS X Install Disc 1.
- Place the disc in the drive, and restart your machine while holding down the “C” key as the
machine starts up.
- Once at the Installer window, choose Open Disk Utility from the Installer Menu.
- Once Disk Utility is open, select the system’s hard drive and on the toolbar choose
Unmount. Note: if the drive has multiple partitions, unmount each of these partitions.
This will spin down the hard drive. The optical drive will also be busy at this time; wait a
moment for the optical drive to spin down also and then listen to the machine.
Is the sound still present?
Yes: With the hard drive and optical drive inactive, all you should be hearing are the fans
in the machine. While booted to the CD, these fans should be running at a lower level
since CPU activity is low with both drives inactive. Fan sound that includes objectionable
ticking, whistling, or squealing may require further investigation and/or replacement of the
particular fan. Go on to the next step.
No: The normal functioning of the hard drive and optical drive will generate additional
whirring and scratching sounds that may be audible. All of these sounds are normal and do
not indicate a failure with the machine. If you wish to check the health of the hard drive, see
Knowledge Base article 152349, “Replacing a disk before it fails.”
5.
Shut down the computer, remove the power cord and any other connected cables, and
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 142
remove the access door, front bezel, and EMI shield.
Stand up the computer, plug it in, and start it up by pressing the external power button.
As the machine starts up, listen carefully to each of the three fans, and see if you can locate
the fan from which the objectionable ticking, whistling, or squealing sound is coming. The
CPU fan is the left-most fan, the hard drive fan is in the center, and the optical drive fan is on
the right.
Can you pinpoint the fan making the sound?
Yes: Replace the noisy fan.
No: If you can hear an objectionable ticking, whistling, or squealing sound, but you cannot
identify the source of the sound, contact Apple Technical Support.
Fans are running at a constant high speed
If the fans on the system are running at a constant high speed, or ramp very quickly to high
speed and do not vary once this speed is reached, the fans are most likely receiving incorrect
thermal input. Follow these steps:
1.
Reset the SMC and then test to see if the fans still exhibit the issue.
2.
Boot to the EF1 tests of the latest version of Apple Service Diagnostic for iMac. This will
test the fans and thermal input of the sensors. If the tests fail, replace the component (s)
indicated by the test.
3.
Replace the optical drive temperature sensor.
4.
Replace the hard drive.
5.
Replace the logic board.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 143
AirPort
Not able to connect wirelessly with AirPort
1. From the Apple menu, choose About this Mac.
2- Click on More Info. System Profiler should open.
3- In System Profiler, in the column on the left, look under Network for a line called “AirPort Card”.
Select that line.
4- Does the section to the right say “No Information Found”?
Yes: The computer doesn’t realize it has an AirPort card installed. Go to step. 5
No: The iMac recognizes that it has an AirPort card installed. Go to step 6.
5- Remove the front bezel, lower EMI shield, and two card mounting screws and reseat the
AirPort card. Re-install the two card mounting screws and check System Profiler again to see if
the computer sees the AirPort card. Does it recognize the card now?
Yes: Problem solved. Replace the lower EMI shield and front bezel and re-test the system to
verify that the original symptom is resolved.
No: Replace the AirPort card. Refer to the Take Apart section for AirPort Card. If the issue
persists after replacing the AirPort card, replace the logic board.
6- Now that we know the iMac recognizes the AirPort card, check the antenna. If the antenna is
not plugged in all the way, you may have very short AirPort range.
7- Remove the access door, front bezel, lower EMI shield, and the two AirPort card mounting
screws . Disconnect the card, turn it over and reconnect the antenna cable connector to the card.
Make sure the antenna lead is firmly seated. Replace the card and other components and retest.
8- If the antenna lead is plugged in properly and the AirPort card is recognized but the problem
persists, there are a number of other things that could cause issues with wireless networking.
Refer to Knowledge Base document 106858 for more networking information.
9- Replace the AirPort card. Refer to Take Apart/Airport Card.
10- Replace the AirPort antenna. Refer to Take Apart/AirPort Antenna.
11- Replace the logic board. Refer to Take Apart/Logic Board.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 144
IR Remote
Remote won’t communicate with system applications such as iTunes or iPhoto, or with the
optical drive.
Make sure of the following when using the Apple Remote:
•
You are within 30 feet of the front of the computer.
•
You have an unobstructed line-of-sight to the front of the computer.
•
You are pointing the lens end of the Apple Remote directly at the front of the computer.
•
The computer is powered on and awake.
•
The “Disable remote control infrared receiver” checkbox in the Security pane of System
Preferences is NOT checked.
•
Make sure the active application works with Apple Remote. Apple Remote uses Front Row,
and from Front Row it can access DVD Player, iPhoto, iTunes, and QuickTime Player.
•
Make sure the remote is paired with the computer. Access the System Preferences/Security
pane and check “Unpair” if available. Close the Security pane, and re-pair the Apple Remote
with the computer. See Knowledge Base article 302545.
1.
Use a digital camera to test your Apple Remote.
If you have a digital camera or DV camera with an LCD display, you can use it to see if your
Apple Remote is emitting a signal. Infrared beams are invisible to the human eye, but most
digital cameras and video cameras use Charged-Coupled Device (CCD) chips or image
sensors that are sensitive to infrared light.
To use a camera to test your Apple Remote, follow these steps:
• Turn on your digital camera or DV camera and remove any lens cover.
• Point your Apple Remote toward the camera lens.
• Press and hold the Menu button on the remote while looking at your camera’s LCD display.
• If you see a faint blinking light coming from the Apple Remote in the camera’s LCD, then
the remote is working properly.
• If you don’t see any blinking light in the camera’s LCD, replace the battery in your Apple
Remote and then test it again with your computer (see “iMac G5 (iSight): How to replace the
Apple Remote battery” for instructions). (KBase article 302543)
2.
Does the IR remote now communicate with an active application that works with Apple
Remote?
Yes: IR remote is functioning correctly.
No: Replace Apple Remote.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 145
IR Sensor/Receiver
Supported applications do not respond to input from the remote control.
1.
Perform the checks above under “IR Remote” to verify that the Apple Remote is functioning
correctly, and retest. Do supported applications now respond to input from the IR remote?
Yes: Problem resolved.
No: Go to the next step.
2.
Verify that the IR Sensor can be seen in the Apple System Profiler. Open the Apple System
Profiler and click on the “USB” section. You should see the following listed:
Do you see the IR Receiver listed under the USB section of the Apple System Profiler?
Yes: Go on to the next step.
No: Replace the IR cable and retest. Refer to the “IR Board” take apart procedure
Do supported applications now respond to input from the IR remote?
Yes: Problem resolved.
No: Replace the IR sensor board and retest. Refer to the “IR Board” take apart procedure.
If the issue persists after replacing these parts, replace the logic board.
3.
Access System Preferences and click Security. In the Security pane check the following:
• Make sure “Disable remote control infrared receiver” checkbox is not checked.
• If “Unpair” is available in the Security pane of System Preferences, another Apple Remote
may be paired to the computer (pairing allows only one Apple Remote to control the
computer). To delete a pairing between the remote and the iMac, click Unpair. (You may
have to enter your Administrator password to make changes in the Security pane.)
After making sure these features are disabled, does the Apple Remote control the machine
now?
Yes: Problem resolved.
No: Replace the IR sensor board and retest. Refer to the “IR Board” take apart procedure.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 146
Built-in iSight Camera
The built-in camera is not recognized.
1.
Boot the iMac to the desktop and launch iChat AV. Note: You do not need to be connected
to a network to use iChat AV to troubleshoot. Verify that the correct versions of Mac OS X
and iChat AV are installed. Reinstall or update software as needed.
2.
Open the iChat AV preferences and click on the ‘Video’ icon. Verify whether the camera is
recognized by the iChat AV software. Is the camera recognized?
Yes: the camera is recognized and video preview is normal: This indicates the camera is
functioning. Pull down the ‘Video’ options from the menu bar and verify that the camera is
enabled. The camera must be enabled to function.
No: the camera is not recognized and no video preview is visible. This indicates the camera
may not be functioning properly. Open the iMac and inspect the camera board (inside the
front bezel) and the attached cable. Reseat the cable on the camera board and check the
other end of the camera cable connections to the logic board. The camera cable connectors
are on the right side of the logic board, below the optical drive and to the right of the fan.
Go on to the next step if this didn’t solve your problem.
3.
Replace the camera board located inside the front bezel.
4.
Replace the camera cable.
5.
If the iSight camera still doesn’t appear in System Profiler on the USB bus after replacing the
camera board or camera cable, replace the logic board.
Camera recognized but no video.
1.
Verify that the lens assembly for the iSight camera located in the top middle of the front
bezel is not obstructed by anything including Post-It notes or other objects.
2.
Replace the camera board in the front bezel and retest.
Camera image quality poor.
The built-in camera is recognized by iChat AV and other supported video applications however
the image quality is poor.
1.
Verify that the lens assembly for the iSight camera is clean. Fingerprints and other
contaminants can affect image quality. Clean the lens using a lint free lens cleaning cloth
being while being careful not to scratch the lens.
2.
Verify that there is sufficient lighting to produce a good quality image. Lighting which is
comparable to that found in a well lit office will product a good quality image. If possible,
avoid having a brightly lit background. Diffused lighting is preferred over direct lighting.
3.
Launch iChat AV and open the iChat AV preferences. Click on the ‘Video’ tab. Is the video
quality acceptable?
Yes: The camera is functioning normally. The image quality problems may be caused by
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 147
bandwidth limitations when using iChat over the internet. Instruct the customer to use the
iChat AV connection doctor feature to verify that there is sufficient bandwidth to have a
video iChat session without a significant degradation of image quality.
No: The camera may not be functioning normally. Replace the camera board in the front
bezel and retest.
Camera recognized but no audio
1.
Open the System Preferences window and click on Sound.
2.
Verify that the built in iSight camera has been selected as the device for sound input.
3.
Verify that the volume settings (on the slider bar) are appropriate.
4.
Launch iChat AV and open the iChat AV preferences. Click on the ‘Video’ icon. Speak into
the microphone while monitoring the microphone level indicator. Does the line level meter
respond while you are speaking?
Yes: The microphone circuit is functioning correctly. Check the preference settings of any
supported AV applications the customer is experiencing problems with to make sure that
the microphone feature is enabled and that the internal iSight microphone has been
selected as the input device.
No: Inspect the microphone / camera cable attached to the camera board inside the front
bezel. If the cable is damaged, replace the cable and retest. If the issue continues, replace the
front bezel. The front bezel contains the microphone.
Audio Quality Poor
The camera is recognized but the built-in microphone’s audio quality is poor.
1.
Open the System Preferences window and click on Sound.
- Verify that the built-in camera has been selected as the sound input port.
- Verify that the input volume settings are appropriate. Use the volume level meter to verify
settings.
2.
Open iMovie and create a new project. Click on the Audio button and record a sound
sample. Is the sound quality acceptable?
Yes: The microphone is functioning normally. The audio quality problems may be caused by
bandwidth limitations when using iChat over the internet. Instruct the customer to use the
iChat AV connection doctor feature to verify that there is sufficient bandwidth to have an
audio iChat session without a significant degradation of audio quality.
iChat AV allows the user to limit the allocated bandwidth which could impact audio quality.
Check the settings and increase the bandwidth if needed.
No: The microphone may be faulty. Replace the front bezel which houses the microphone.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 148
Speakers
Can’t hear sound from the speakers.
1.
Disconnect any external microphones, speakers, or headphones.
2.
Access System Preferences and select Sound. In the Sound pane, select Output and make
sure the Internal speakers are selected as the device for sound output, the Output volume is
adequate, and Mute is not selected. Do you have sound now?
Yes: Problem resolved.
No: Go to the next step.
3.
Reset parameter RAM. Press Command-Option-P-R during startup but before “Welcome to
Macintosh” appears. Do you have sound now?
Yes: Problem resolved.
No: Go to the next step.
4.
Plug headphones or external speakers into the Line out /headphone port. Do you have
sound through these devices when plugged in?
Yes: Verify that the speaker cable connector is securely attached to the logic board. If the
issue persists, replace the speakers.
No: Replace the logic board
5.
Verify that the speaker cable connector is securely attached to the logic board. Do you have
sound now?
Yes: Problem resolved.
No: Replace the speakers.
I hear sound out of only one speaker.
1.
Are there any external microphones, speakers or headphones plugged into the iMac?
Yes: Disconnect any external microphones, speakers, or headphones. Do you hear audio from
both of the built in speakers on your iMac?
Yes: Good. It looks like the built-in speakers are working properly. This may be an issue
with the microphone, speakers or headphones that were plugged into your iMac. Please
work with the manufacturer to troubleshoot this issue.
No: Go to step 2.
No: Check your speaker balance. If your balance setting was set to the left or right speaker,
you would only hear sound from one speaker. Go to step 2.
2.
Open System Preferences. (System Preferences can be found under the Apple menu.)
3.
Click once on the sound icon.
4.
Click once on the Output tab.
5.
Make sure your balance setting is in the middle. After adjusting the audio balance, do you
have audio from both speakers now?
Yes: It looks like the issue was the balance was not set properly.
No: Replace the speakers.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 149
6.
If the speakers did not solve the problem, replace the logic board.
Mouse
My mouse doesn’t work at all.
1.
Turn over the mouse and check the if the red LED on the underside of the mouse. Is the LED
lit?
Yes: The mouse has power. Try using the mouse on another surface. Non-reflective, opaque
surfaces without repetitive patterns work best. The surface should be clean, but not shiny.
Optical mice won’t work on glass, mirrored surfaces, glossy materials or mouse pads with
pictures.
No: There is no power to the mouse. Try plugging the mouse into one of the USB ports
on the machine. If the mouse won’t power on from any USB port, try it on a known good
machine. If the mouse fails to power on with known good machine, replace the mouse. If the
mouse will power on with a known good machine, replace the main logic board.
2.
If the underside LED is lit and the surface is good, and the mouse still does not track, try
plugging the mouse into another USB port on the machine. Does the mouse track now?
Yes: Issue resolved. Try the other USB ports on the system to make sure you don’t have a bad
port.
No: Try using a known good mouse. If a known good mouse resolves the issue, replace the
mouse. If a known good mouse does not resolve the issue, replace the main logic board.
My mouse works intermittently (the cursor freezes randomly) or is slow to
respond.
1.
Try using the mouse on another surface. Non-reflective, opaque surfaces without repetitive
patterns work best. The surface should be clean, but not shiny. Optical mice won’t work on
glass, mirrored surfaces, glossy materials or mouse pads with pictures. Does the mouse track
correctly on a proper surface?
Yes: Issue resolved.
No: Check the Mouse Tracking setting in the Mouse control panel.
2.
Boot to another volume (like the System Install Disc). Does the mouse track properly now?
Yes: Reinstall System Software
No: Try a using a known good mouse. If a known good mouse resolves the issue, replace the
mouse. If the issue persists with a known good mouse, replace the main logic board.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 150
Keyboard
Certain keys or none of the keys on the keyboard function.
1.
Unplug all devices from your computer, including your mouse and keyboard as well as
printer, scanner, external hard drives, and hubs. (Warning: Some devices may require you
to perform steps before it is safe to unplug them, e.g., external storage devices.) Be sure to
unplug your hub, if you have one.
2.
Plug your keyboard into the back of your computer firmly and securely. Plug your mouse
into the back of your computer firmly and securely. Take special care to make sure the
connector is completely in the socket. Go on to step 3.
3.
Does your keyboard work now?
Yes: Problem solved.
No: Unplug your keyboard and plug it into another USB slot on the back of your iMac. Does
it work now?
Yes: Replace the logic board.
No: Unplug your keyboard and plug your mouse into the port the keyboard just
occupied. Go on to step 4.
4.
Does your mouse work now?
Yes: Replace the keyboard.
No: Replace the logic board.
My keys are sticky or slow to respond.
1.
Try a known good keyboard.
2.
Open System Preferences. Click on the keyboard and mouse icon. Adjust the “key repeat
speed and delay until repeat” rate.
3.
Replace the keyboard.
When I type, strange characters appear on the screen.
1.
Depending on your iMac’s settings, a simple keystroke can change your keyboard from
English to Japanese. This can result in some pretty funny characters showing up when you
type. To switch to the US keyboard,
2.
Open System Preferences.
3.
Click on the International icon.
4.
Click on the Input Menu near the top of the screen.
5.
Scroll down the list and uncheck any non-US keyboard layouts.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 151
6.
Close the System Preferences. Try typing a few characters. Did is solve the problem?
Yes: Problem solved.
No: Replace the keyboard.
The USB port on my keyboard doesn’t work.
1.
Unplug all devises from your keyboard.
2.
Plug your Apple mouse into the left USB port on your keyboard. Does your mouse work
when it’s plugged into this port?
Yes: Now plug the mouse into the right port. Does it work?
Yes: Try a known good keyboard.
No: Try a known good mouse to rule out the mouse. Then go to step 3.
No: Try a different mouse or keyboard.
3.
Now unplug the keyboard from the USB port on the back of the iMac, and plug the mouse
into the port the keyboard had been in. Does the mouse work now?
Yes: Replace the keyboard?
No: It appears that your USB port isn’t functioning properly. Go on to step 4.
4.
Replace the logic board.
Error Beep(s)
Refer to� Power On Self Test (POST) covered in the General Information section of this manual.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 152
USB
A USB device doesn’t work
1.
Please unplug all of your USB devices from your iMac except your Apple Keyboard and Apple
mouse.
2.
Now plug your device directly into the back of your iMac. Does it work as expected now?
Yes: Your device works when plugged directly into the computer. This indicates a conflict
with one of the other USB devices. You can test by gradually adding your devices back
and seeing where the issue occurs, then contacting the manufacturer of the device(s)) for
assistance.
No: Unplug your device from the iMac and plug the keyboard into the port your device just
occupied. Is your keyboard still working?
Yes: Your Apple Keyboard works when plugged into the USB port your device was
plugged into. This points to an issue with your device. Please review the documentation that
came with your device. Install any necessary drivers and contact the manufacturer of your
device for assistance.
No: Replace the logic board
I see a message saying not enough power to function.
It appears that this device needs to be plugged into the computer’s USB port, rather than the
keyboard USB port. Any USB device connected to the keyboard needs to be either a self-powered
device (a USB device with its own AC power supply), or a low-power device (a device that does
not need a large amount of voltage to operate). Your device may draw more power than the
keyboard can provide.
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 153
iMac (17-inch (Mid 2006/Late 2006 CD) Troubleshooting — Symptom Charts 154
 Service Source
Views
iMac (17-inch Mid 2006) and iMac (17-inch Late 2006 CD)
© 2006 Apple Computer, Inc. All rights reserved.
Upper Exploded View
iMac (17-inch Mid 2006) and iMac (17-inch Late 2006 CD)
Lower EMI Shield
922-7653
Camera Board
661-3811
Front Bezel
922-7243
Access Door
922-7246
LCD Display, 17 Inch
661-4020
LVDS Cable
922-7642
Left Bracket
922-7078
Optical Temp. Sensor
922-7282
Power Supply
661-4018
661-3780
Speakers
922-7057
Clutch Cover
922-7080
Logic Board, 17-Inch
661-4017 (Mid 2006)
661-4116 (Late 2006/CD)
Right Bracket
922-7077
Inverter
661-3841
Optical Adapter Board
922-7281
Optical Drive, Combo
922-3999
Optical Sensor Cable
922-7644
Clip, Optical Drive
922-7652
AirPort Extreme Card
661-3874
SO-DIMM SDRAM,
661-4021, 256 MB, 667
661-4035, 512 MB, 667
661-4036, 1 GB, 667
iMac (17-inch Mid 2006/Late 2006 CD) — Views 156
Lower Exploded View
Optical Drive Fan
922-7062
CPU Fan
922-7641
HD Mounting Bracket
922-7057
HD Power Cable
922-7646
HD SATA Cable
922-7645
Hard Drive Fan
922-7643
Hard Drive
661-3943 80 GB, 7200
661-4175 160 GB, 7200
Hard Drive Pins
922-7001
Camera Cable / Microphone
922-7675
Clutch
922-7074
Wireless Antenna
922-7649
IR Board
922-7639
Chassis
922-7247
IR Cable
922-7648
Not shown:
EMI tape 922-5026
EMI tape 922-4786
Rear Cover
922-7657
AC Power Inlet
922-7155
Stand
922-7651 (Mid 2006)
922-7832 (Late 2006/CD)
iMac (17-inch Mid 2006/Late 2006 CD) — Views 157
Screw Chart
Screw Chart Page 1
iMac (17-inch Mid 2006/Late 2006 CD)
922-6800
T10
Logic board to rear cover (3)
922-6842
Note: Screws are not to scale.
T10
922-6850
T10
Logic board to rear cover (6)
Chassis to rear cover (13)
922-7010
922-7011
(x3)
AC power inlet to rear cover
(3)
922-7001
T8
T6
922-7749
(x1)
Hard drive pins (2)
LVDS cable to logic board (2)
AirPort card to logic board (2)
922-7012
T10
Stand to interconnect
mechanism (4)
922-7018
T10
Optical drive to optical bezel
(4)
T10, shorter
T10, longer
Front bezel to bottom
housing
922-7019
T10
Hard drive clip to hard drive
(2)
iMac (17-inch Mid 2006/Late 2006 CD) Views 158
Screw Chart Page 2
922-7020
T10
922-7023
T10
922-7066
T10
Clutch mechanism to
chassis((4)
LCD assembly to rear cover
via left and right brackets (4)
Power supply to rear chassis
(2)
922-7067
922-7068
922-7069
T10
T10
T10
Left speaker to rear cover (1)
Right speaker to rear cover(1)
AC power inlet ground to
chassis (1)
922-7158
922-7159
922-7654
T8
T8
T10
Left and right LCD bracket to
LCD (4)
Power supply to (top right
corner) rear chassis (1)
Power supply to (bottom left
corner) rear cover/chassis (1).
*Longer power supply screw.
922-7655
922-7656
922-7713
T8
T6
T6
Coming soon
IR board to heatsink (2)
Optical direct connect board
to optical drive (2)
Camera board to front bezel
iMac (17-inch Mid 2006/Late 2006 CD) Views 159
iMac (17-inch Mid 2006/Late 2006 CD) Views 160