Apple iMac 17 late 2006 Service Manual
Service Source
iMac (17-inch Late 2006)
29 October 2007
© 2006 Apple Inc. All rights reserved.
iMac (17-inch Late 2006)
Contents
Take Apart
General Information 6
Product View 6
Note About Images in This Manual 6
Tools Required 7
Serial Number Location 8
Safety 9
Opening the Computer 10
Access Tool Modication 11
EMI Shielding 13
What’s New 16
29 October 2007 16
23 April 2007 16
22 February 2007 16
16 February 2007 16
12 January 2007 16
11 November 2006 16
31 October 2006 17
29 September 2006 17
6 September 2006 17
Access Door 19
Memory 21
Front Bezel 24
Camera Board 33
Lower EMI Shield 37
IR Board 39
AirPort Extreme Card 42
Battery 47
LCD Display 50
ii
LVDS Display Cable 57
Inverter 61
Speakers 64
Bluetooth Board 68
Optical Drive 70
Hard Drive 77
DC-DC Board 82
Power Supply 85
Logic Board 90
CPU Fan 99
Optical Drive Fan 101
Hard Drive Fan 104
AC Power Inlet 107
Ambient Light Sensor Board 111
Clutch Mechanism 114
AirPort Antennas 119
Bluetooth Antenna 123
Camera Cable 127
Chassis 131
Rear Housing 134
DC Power Cable 135
Troubleshooting
General Information 139
Serial Number 139
Block Diagram 139
Power On Self Test (POST) 14 0
Intel-based Mac computers such as the iMac (17-inch Late 2006) rely on a combination of
tones and blinking LEDs to display Power On Self Test (POST) error codes. 140
DDR Memory 141
iii
How to Reset the System Management Controller (SMC) 142
Diagnostic LEDs 143
Symptom Charts 145
Power Issues 146
No Video 148
Display 151
Hard Drive 152
Optical Drive 154
Fan Sound 159
AirPort 162
Bluetooth 163
IR Remote 164
IR Sensor/Receiver 165
Built-in iSight Camera 166
Speakers 168
Mouse 169
Keyboard 170
Error Beep(s) 171
USB 172
Views
iMac (17-inch Late 2006)—Upper Exploded View 17 4
iMac (17-inch Late 2006)—Lower Exploded View 175
Screw Charts 176
Screw Charts 176
iv
Service Source
Take Apart
iMac (17-inch Late 2006)
© 2006 Apple Computer, Inc. All rights reserved.
Product View
General Information
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 dierences in appearance between the image pictured and the computer you are
servicing. However, although the appearance diers, the steps and sequence are the same unless
noted.
iMac (17-inch Late 2006) Take Apart — General Information 6
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 at-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 Late 2006) Take Apart — General Information 7
Serial Number Location
iMac serial numbers are located on the bottom of the computer stand.
iMac (17-inch Late 2006) Take Apart — General Information 8
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 even• t 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 Late 2006) Take Apart — General Information 9
Opening the Computer
Apple authorized, desktop certied 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 squeeze the top of the bezel, that will help
take pressure o of the latch and enable it to open easier. Note: If the bezel won’t open, read the
next topic, Access Tool Modication.
Once the card has been released it is safe to open the bezel. See the Front Bezel Take Apart
procedure for more information.
iMac (17-inch Late 2006) Take Apart — General Information 10
Access Tool Modication
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.
Remove the tape on the gasket to expose the sticky side of the gasket. Attach the sticky side 1.
of the EMI gasket to the top of the access card.
Cut the EMI gasket to the edge of the access card. 2.
iMac (17-inch Late 2006) Take Apart — General Information 11
Using packing tape, or something equivalent, fold the tape over the EMI gasket to attach the 3.
gasket to the card.
Bend the card at a slight angle at the top to make sure the card makes contact with each 4.
latch.
Refer to 5. Removing the Front Bezel for the complete procedure.
iMac (17-inch Late 2006) Take Apart — General Information 12
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
922-5026 (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 Late 2006) Take Apart — General Information 13
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 atten the EMI tape tightly and rub out air
pockets and wrinkles.
iMac (17-inch Late 2006) Take Apart — General Information 14
iMac (17-inch Late 2006) Take Apart — General Information 15
What’s New
29 October 2007
A note was added to the Logic Board Replacement section to inform service providers to install the
iMac Firmware Update 1.2 (or later)
For proper performance and reliability of the Intel Core 2 Duo processors, apply the iMac •
rmware update after replacing the logic board. The rmware update also allows Apple
service to consolidate the version 1 and version 2 logic boards. Refer to Kbase article:
Firmware updates for Intel-based Macs.
The 661-4105 logic board will be replaced by 661-4290•
The 661-4106 logic board will be replaced by 661-4291•
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.
22 February 2007
Updated Upper Exploded View and created hyperlink to EEE code compatiblilty chart. •
16 February 2007
The AirPort Extreme Card and Logic Board sections in Take Apart have been updated with •
EEE code compatibility information. Before replacing either part, check for compatibility.
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.
11 November 2006
The clutch (922-7074) was renamed “clutch mechanism” in the Exploded View drawing.•
iMac (17-inch Late 2006) Take Apart — General Information 16
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.
29 September 2006
Photos of the EMI tape (922-44786 and 922-5026), used to repair torn and damaged EMI •
shielding, have been added to the EMI Shielding section in the General Information chapter.
The logic board section has been updated with new photos for screw and cable locations. •
The inverter and display panel sections have an updated photo showing the clear tape •
locations on the back of the panel.
The display panel section has been updated to show the placement location of three pieces •
of EMI tape that attach from the bottom of the panel to the lower EMI shield.
6 September 2006
Product Introduction: iMac (17-inch Late 2006)
Logic board, 2GHz Intel Core 2 Duo processor•
Two built-in AirPort Extreme wireless antennas •
Built-in wireless Bluetooth 2.0 module standard •
1GB of 667MHz DDR2 SDRAM standard, PC2-5300, supports up to 3.0 GB system •
memory
160, 250, 500 GB hard drive with serial ATA•
Troubleshooting LED• s are located under the SATA drive cable and to the left of the
battery
iMac (17-inch Late 2006) Take Apart — General Information 17
iMac (17-inch Late 2006) Take Apart — General Information 18
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 Late 2006) Take Apart — Access Door 19
Removing the Access Door
Raise the stand and use a Phillips #2 screwdriver to loosen the two captive screws that 1.
secure the memory access door. Remove the access door.
Replacing the Access Door
Make sure the memory ejector tabs are in the closed position before attaching the access 1.
door.
Position the access door on the rear housing over the memory compartment. 2.
Lift the stand out of the way. 3.
Use a Phillips #2 screwdriver to tighten the captive screws. 4.
iMac (17-inch Late 2006) 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 Late 2006) Take Apart — Memory 21
Removing the Memory
After removing the access door, touch the metal frame around the memory compartment to 1.
discharge any static electricity from your body.
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 nished
replacing the memory.
Pull the two levers in the memory compartment toward you. If a memory module is installed 2.
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 ngers.
Set the memory modules aside.3.
iMac (17-inch Late 2006) Take Apart — Memory 22
Replacing the Memory
Make sure the DIMM levers are all the way open. 1.
With the computer face down, orient the DIMM with the notch on the left. 2.
With your ngers, press the DIMM fully into the slot until you hear a click. After inserting the 3.
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.
Replace the access door on the memory compartment.4.
Use a Phillips #2 screwdriver to tighten the captive screws on the access door.5.
iMac (17-inch Late 2006) Take Apart — Memory 23
Front Bezel
Tools
Access card tool 922-7172•
Torx T8 screwdriver•
Preliminary Steps
Before you begin, remove the access door and the memory.
Part Location
iMac (17-inch Late 2006) Take Apart — Front Bezel 24
922-7011 (x3)
922-7749 (x1)
Removing the Front Bezel
1. With the bottom facing toward you use a T8 torx screwdriver to remove the four bezel
mounting screws. The screws are shown in the order they were removed, left to right.
Stand the computer upright.2.
Located the access card tool. Bend the upper quarter of the access tool card slightly to 3.
engage the front bezel latches. Note: Refer to AccessToolModication in the General
Information chapter if the bezel is dicult to open.
iMac (17-inch Late 2006) Take Apart — Front Bezel 25
This picture shows how the access tool pushes the latch. Go on to the next step to use the 4.
tool.
Start on the left side (looking from the back of the unit). Insert the card to disengage the 5.
latch. Squeeze the top of the bezel, that will help take pressure o of the latch and enable it
to open easier. As the bezel releases, pull the bezel away from the rear housing.
iMac (17-inch Late 2006) Take Apart — Front Bezel 26
Repeat step 5 to release the locking latch in the right corner. Again, pull the bezel away as 6.
the card releases the latch.
If the bezel won’t release, pull the bottom of the bezel out a bit and insert the access card 7.
again.
iMac (17-inch Late 2006) Take Apart — Front Bezel 27
Repeat step 7 for the left side. 8.
Once the access card has been removed, it is safe to open the bezel. Position the unit on an 9.
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 Late 2006) Take Apart — Front Bezel 28
Lift the bottom of the front bezel straight up to remove it, and swing the bezel over onto its 10.
top edge. Disconnect the two cables attached to the top of the bezel.
iMac (17-inch Late 2006) Take Apart — Front Bezel 29
Swing the bezel up so you can disconnect the two camera board cables Remove the any 11.
kapton tape and disconnect the camera and microphone cables from the camera board..
If replacing a damaged front bezel, remove the camera board.12.
iMac (17-inch Late 2006) Take Apart — Front Bezel 30
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