Apple iMac DV Service Manual

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Service Source

iMac, iMac DV, iMac DV+,

iMac DV Special Edition

Updated 11 July 2005

Service Source

Basics

iMac, Mac DV, iMac DV+, iMac

DV Special Edition

Basics Overview - 1

Overview

Product Description

The new iMac models are available in four models: iMac, iMac DV, iMac DV+, and the iMac DV Special Edition. And, there five new colors: indigo, ruby, sage, graphite, and snow. The new iMacs offer several new, unique features, including increased processor speed and hard disk storage, a new keyboard an optical sensor mouse.

Basics New Features - 2

New Features

Processor Speed

There are four shipping configurations: 350, 400, 450, and 500 MHz, designed around the PowerPC G3 microprocessor.

• 350 MHZ (iMac)

• 400 MHz (iMac DV)

• 450 MHz (iMac DV+)

• 500 MHz (iMac DV Special Edition)

Basics New Features - 3

Memory

• 64 MB SDRAM

• 128 MB SDRAM of PC-100 SDRAM (168-pin, running at 125 MHz (8 ns) or faster

The RAM slots can support up to 512 MB each for a maximum total of 1 GB.

Hard Disk Storage

• 7 GB EIDE

• 10 GB EIDE

• 20 GB EIDE

• 30 GB EIDE

Basics New Features - 4

CD-ROM or DVD-ROM Drive

• 24x-speed, slot-load, ATAPI CD-ROM drive

• 6x-speed, slot-load, ATAPI DVD-ROM drive

Graphics Support

• The graphics controller IC is an ATI RAGE 128 Pro

Keyboard

• The computer comes with a new full-size keyboard with 15 function keys and separate groups of numeric keypad and editing keys.

There is no power key on this keyboard.

Note:

Basics New Features - 5

Mouse

• The computer comes with a new mouse. The mouse is a new design and uses optical tracking in place of the traditional rolling ball.

Basics New Features - 6

Logic Board: iMac DV Special Edition, 500 MHz

Basics Repair Strategy/Warranty - 7

Repair Strategy/Warranty

Strategy and Ordering

The iMac computers (Summer 2000) include a 1-year complimentary carry-in warranty. Service the computer through module exchange and parts replacement. Customers can request on-site service from an Apple-Authorized Service Provider Plus (AASP+) Apple Assurance (US only), or Apple Canada Technical Answerline (Cananda only).

The parenthetical product description (Summer

Note:

2000) refers to the summer of the Northern Hemisphere.

Basics Repair Strategy/Warranty - 8

Apple-service providers planning to support the computer systems covered in this manual may purchase Service modules and parts to develop servicing capability. To order parts, use the AppleOrder (U.S. only) or ARIS (Canada only) system and refer to the iMac Slot Load CD/DVD Service Price Pages.

Large businesses, universities, and K-12 accounts must provide a purchase order on all transactions, including orders placed through the AppleOrder (U.S. only) or ARIS (Canada only) system.

Basics Repair Strategy/Warranty - 9

USA Ordering

U.S. Service providers not enrolled in AppleOrder may fax their orders to Service Provider Support (512-908-

8125) or mail them to

Apple Computer, Inc. Service Provider Support MS 212-SPS 2323 Ridgepoint Drive Austin, TX 78754

For US inquiries please call Service Provider Support (800-919-2775, option1).

Basics Repair Strategy/Warranty - 10

Canadian Ordering

Canadian service providers not enrolled in ARIS may fax their orders to Service Provider Support in Canada (800903-5284).

For Canadian inquiries, please call Service Provider Support (800-217-9517).

Service Source

T ak e Apart

iMac, iMac DV, iMac DV+, iMac

DV Special Edition

Take Apart - 1

Important: Take Apart Information

The Take Apart procedures for the iMac computers (Summer

2000) are identical to take apart procedures for the slot loading iMac computers. The slot loading iMac is referenced in all the pictures in this chapter.

The parenthetical product description (Summer

Note:

2000) refers to the summer of the Northern Hemisphere.

Important:

the power/analog/video board and CRTs. Refer to the take apart sections for the power/analog/video board and the CRT for additional information.

The only noticeable

internal

differences are with

Take Apart - 2

Tools

The following tools are recommended for the take apart procedures:

• phillips screwdriver (#1 and #2)

• a stubby (short) phillips screwdriver

• plastic flatblade screwdriver to release tabs on plastic housing

• jeweler’s screwdriver

• CRT discharge tool

• needlenose pliers

• ESD mat

Take Apart Bottom Housing With Flip Foot - 3

Procedures

Bottom Housing With Flip Foot

Before you begin, position the computer face down, resting the computer on an ESD mat or other soft surface.

Take Apart Bottom Housing With Flip Foot - 4

1. Using a plastic flatblade

screwdriver, remove the VGA vented cover.

2. Remove the two screws

near the flip foot.

Take Apart Bottom Housing With Flip Foot - 5

3. Remove the video out

access door from the bottom housing.

Take Apart Bottom Housing With Flip Foot - 6

4. Remove the two outer

screws located near the video out port.

Replacement Note:

The bottom housing uses two sizes of screws. The two shorter screws attach near the flip foot.

Take Apart Bottom Housing With Flip Foot - 7

5. Pull the bottom housing

off the computer.

Take Apart Bottom Housing With Flip Foot - 8

Bottom Housing Replacement Note

1. Align the three tabs on

the bottom housing with the tab slots on the front outer bezel.

Ensure that the center tab is properly aligned or CDs and DVD discs may not eject from the slot.

2. Lower the bottom

housing into place and replace the screws.

Take Apart EMI Cover - 9

EMI Cover

Before you begin:

• Position the computer upside down, resting the computer on an ESD mat or other soft surface.

• Remove the bottom housing.

Take Apart EMI Cover - 10

1. Remove the six screws

on the EMI cover.

Take Apart EMI Cover - 11

2. Lift the EMI cover off the

computer.

Note:

Be careful of the

VGA output port.

Take Apart EMI Cover - 12

Replacement Note:

Position the rear of the EMI cover into place first, positioning the EMI cover over the video port (if present). Continue lowering the cover into place by gently squeezing in on both sides, as you lower the cover into position.

Take Apart SDRAM DIMM - 1 3

SDRAM DIMM

Before you begin, position the computer face down, resting the CRT on an ESD mat or other soft surface.

Take Apart SDRAM DIMM - 1 4

1. With a flatbade

screwdriver or coin, turn the colored latch counterclockwise on the access door.

2. Pull the access door

down to open.

Take Apart SDRAM DIMM - 1 5

3. Push down on the plastic

tabs to release the SDRAM module(s).

4. Carefully lift the SDRAM

from the slot.

Note:

Remove installed SDRAM from the logic board before returning the logic board to Apple.

Take Apart AirPort Card - 16

AirPort Card

Before you begin, position the computer face down, resting the CRT on an ESD mat or other soft surface.

If the AirPort Card is

Note:

not installed, a protective antenna cap will be attached to the antenna.

Take Apart AirPort Card - 17

1. With a flatbade

screwdriver or coin, turn the colored latch to open the access door.

The antenna and AirPort Card will be visible when you open the access door.

If the AirPort

Note:

card is not installed, a clear protective antenna cap will be attached to the antenna.

Take Apart AirPort Card - 18

2. Remove the AirPort Card

by lifting the card straight up and out of the card guides and connector.

Take Apart AirPort Card - 19

3. Disconnect the antenna

from the small hole AirPort Card.

Take Apart AirPort Card - 20

4. Remove the ground clip

from the AirPort Adapter Card.

5. Using the pull tab,

separate the AirPort Card from the adapter card.

Take Apart CD/HD Carrier - 21

CD/HD Carrier

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• EMI cover

• SDRAM

Take Apart CD/HD Carrier - 22

1. Remove the four screws

connecting the CD/HD drive carrier to the the metal chassis (also known as the divider panel).

Take Apart CD/HD Carrier - 23

2. Disconnect the following

cables fro the back of the CD/HD carrier:

• hard drive power cable

• hard drive data cable

• CD-ROM/DVD-ROM data cable

• logic board cable connector

Take Apart CD/HD Carrier - 24

3. Tilt the CD/HD carrier forward and lift the carrier out of the computer.

Continue with the

Note:

Take Apart procedures if you are replacing the CD-ROM, DVD-ROM, or the hard drive.

Take Apart CD-ROM / DVD-ROM - 2 5

CD-ROM / DVD-ROM

The procedures for

Note:

removing a CD-ROM or DVD-ROM are identical. This procedure will reference the CD-ROM Take Apart.

Before you begin, position the computer upside down, resting the computer on an ESD mat and remove the following:

• bottom housing

• EMI cover

• SDRAM

• CD/HD carrier

Take Apart CD-ROM / DVD-ROM - 2 6

1. Using a Phillips screwdriver, remove the CD/HD carrier mounting screws (two on each side).

Take Apart CD-ROM / DVD-ROM - 2 7

2. Carefully turn the CD/HD drive carrier over.

3. Holding onto the CD-ROM from the rear, lift the CD-ROM carrier out of the CD/HD carrier.

Important:

Don’t press or squeeze the front of the CD-ROM. Squeezing the front could bend the metal housing, making it impossible to insert or remove a CD or DVD disc.

Take Apart CD-ROM / DVD-ROM - 2 8

4. Using a jeweler’s screwdriver, remove the four screws (two on each side) on the CD/ DVD carrier.

5. Lift the CD-ROM from its carrier.

Take Apart CD-ROM / DVD-ROM - 2 9

6. On the back of the CDROM, Use a jeweler’s screwdriver to remove the two screws on the adapter board.

7. Remove the adapter board from the CD-ROM.

Return the CD-

Note:

ROM or DVD-ROM drive to Apple without the cables, carrier, or the adapter board. Refer to the parts database for more information.

Take Apart CD-ROM / DVD-ROM - 3 0

CD-ROM or DVDROM Module Replacement

Position the CD-ROM or DVD-ROM into its carrier as shown.

1. Check that the yellow warning label is face up.

if you are

Note:

installing a new CD/DVD carrier, remove the blue film covering the grounding pad.

Take Apart CD-ROM / DVD-ROM - 3 1

2. Lower the CD/DVD carrier into the CD/HD carrier.

3. Push the CD/DVD carrier forward so the carrier tabs go through the holes on the CD/HD carrier.

4. Replace the CD/HD carrier screws.

Take Apart CD-ROM / DVD-ROM - 3 2

5. Holding the drive carrier in the orientation shown, make sure the CD-ROM or DVD-ROM is correctly installed into the CD/HD carrier.

6. Make sure the Slave/ Master switch on the back of the drive is still set to the Slave mode (set to the left).

Take Apart CD/DVD Adapter Board - 3 3

CD/DVD Adapter Board

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• EMI cover

• SDRAM

• CD/HD carrier

Take Apart CD/DVD Adapter Board - 3 4

1. Using a jeweler’s screwdriver, remove the two screws on the CD/DVD adapter board.

2. Remove the adapter board from the back of the CD-ROM.

Note:

Return the CD/DVDROM drive to Apple without the cables, carrier, or the adapter board. Refer to the parts database for more information.

Take Apart Hard Drive - 35

Hard Drive

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• EMI cover

• SDRAM

Take Apart Hard Drive - 36

1. Disconnect the following

cables on the back of the hard drive:

• Hard drive power cable

• Hard drive data cable

Take Apart Hard Drive - 37

The hard drive

Note:

carrier shown was removed from the computer. However, you can easily remove the hard drive while the carrier is still screwed down to the chassis. Continue with the procedure.

2. Using a #1 Phillips screwdriver, remove the four hard drive mounting screws.

Take Apart Hard Drive - 38

3. Slide the hard drive out of the CD/HD carrier.

Return the drives

Note:

without the cables or carriers. Exchange Apple hard drive modules likefor-like in Apple packaging. Failure to comply with this requirement may result in a packaging noncompliance charge. Refer to the parts database for more information.

Take Apart Hard Drive - 39

Hard Drive Replacement

When installing the hard drive into the CD/HD carrier, make sure the hard drive is component side up (as shown).

Take Apart Logic Board - 40

Logic Board

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• EMI cover

The logic board and the down converter board are removed together (still connected to each other), and are separated once they are removed from the computer.

Take Apart Logic Board - 41

Remove SDRAM to

Note:

make cable removal easier.

1. On the back of the CD/HD carrier,disconnect the:

• hard drive power

cable

• hard drive data cable

• CD-ROM/DVD-ROM

data cable

• logic board cable

connector

2. Disconnect the antenna if it’s connected to the AirPort Card, or it it’s attached to the protective antenna cap.

Take Apart Logic Board - 42

3. Remove the six screws on the logic board and five screws on the down converter board.

Note:

The two screws located at the top of the down converter board (near the speaker) are larger screws than the other screws (with washers).

Take Apart Logic Board - 43

4. Gently lift the down converter board and logic board out of the computer.

Take Apart Logic Board - 44

5. Using a flatblade screwdriver, pry the plastic rivet off the board.

Put the top half of the rivet back into the bottom half so it doesn’t get lost.

Take Apart Logic Board - 45

6. Holding onto the down converter, press down on the black connector to separate the down converter board from the logic board.

If you are returning

Note:

the logic board to Apple refer to the parts database and remove the SDRAM, any cables, the modem, the AirPort Card, and I/O panel.

Replacement Note:

When reinstalling the logic board, make sure the antenna wire is not underneath the board .

Take Apart Down Converter Board - 4 6

Down Con verter Board

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• EMI cover

The logic board and

Note:

the down converter board are removed together (still connected to each other), and are separated once they are removed from the computer.

Take Apart Down Converter Board - 4 7

Remove SDRAM to

Note:

make cable removal easier.

1. On the back of the CD/HD

carrier, disconnect the:

• hard drive power cable

• hard drive data cable

• CD-ROM/DVD-ROM data cable

• logic board cable connector

2. Disconnect the antenna if it’s connected to the AirPort Card, or it it’s attached to the protective antenna cap.

Take Apart Down Converter Board - 4 8

3. Remove the six screws on the logic board and five screws on the down converter board.

Note:

The two down converter screws located near the speaker are larger screws than the rest of the down converter screws.

Take Apart Down Converter Board - 4 9

4. Lift the boards out of the computer.

Take Apart Down Converter Board - 5 0

5. Using a flatblade screwdriver, pry the rivet off the logic board.

Put the top half of the rivet back into the bottom half so it doesn’t get lost.

Take Apart Down Converter Board - 5 1

6. Holding onto the boards, press down on the black connector and separate the down converter board from the logic board.

Replacement Note:

When reinstalling the logic board, make sure the antenna wire is not underneath the board.

Take Apart Modem - 5 2

Modem

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• EMI cover

• logic board

The modem is located

Note:

on the underside of the logic board.

Take Apart Modem - 5 3

1. With the logic board facing right side up, disconnect the cable at J12.

2. Remove the two screws on the I/O panel.

Take Apart Modem - 5 4

3. Turn the logic board to the underside and remove the modem screw.

Take Apart Modem - 5 5

4. Rotate the logic board right side up again. Carefully slide the I/O panel off the logic board.

Note: As you slide the I/

O panel off the logic board, support the modem with your other hand so the modem doesn’t fall off the logic board.

5. Remove the modem from its connector slot on the underside of the logic board.

Take Apart Modem - 5 6

Modem Replacement

The I/O panel and the modem are sandwiched between the logic board and the metal frame of the I/O panel. The metal frame fits on top of the logic board, over the screw holes. On the underside of the logic board, the screw tab goes under the modem.

Replacement Note: After

replacing an international modem, use the Modem Country Selector utility to set the modem to the correct country.

Take Apart I/O Panel - 57

I/O Panel

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• EMI cover

• logic board

Take Apart I/O Panel - 58

1. Disconnect the cable at J12, going from the logic board to the I/O panel.

2. Remove the two screws on the I/O panel.

Take Apart I/O Panel - 59

3. Turn the logic board over and remove the modem screw.

Take Apart I/O Panel - 60

4. Rotate the logic board face up again and carefully slide the I/O panel off the logic board.

Note: As you slide the I/

O panel off the logic board, support the modem with your hand so the modem doesn’t fall off the logic board.

Take Apart Front Outer Bezel - 61

Front Outer Bezel

Before you begin, place the computer on an ESD mat and remove the bottom housing.

Take Apart Front Outer Bezel - 62

1. With a jeweler’s screwdriver, carefully remove the two tabs on the front outer bezel. Refer to the next graphic for a close-up of the tab removal.

Take Apart Front Outer Bezel - 63

2. After removing the tabs, remove the screws located under the tabs.

Take Apart Front Outer Bezel - 64

Note: The bezel tabs fit

tightly into the rear housing. A good, hard pull upward is required to release all the tabs.

3. Insert a plastic tool underneath the bezel.

4. Pry the outer bezel tabs from the rear housing with a plastic tool. As you push and pry the tool inside the bezel, the side tabs will start to release.

5. Insert the tool on the left side of the bezel and repeat.

Take Apart Front Outer Bezel - 65

6. As the tabs start to release, pull hard on the front outer bezel to release the tabs completely.

Take Apart Top Rear Housing - 6 6

Top Rear Housing

±Warning: This product

contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety. From the Service Source Online home page, click Troubleshoot and Repair. Then click on Safety under the Tools list.

Before you begin, rest the computer on an ESD mat and remove the following:

• bottom housing

• front outer bezel

Take Apart Top Rear Housing - 6 7

1. Remove the two tabs (screw caps) on the top inner bezel. Refer to the next page for a close-up of the tab removal.

Take Apart Top Rear Housing - 6 8

2. Pry the tabs off, and remove the two screws under each tab.

Take Apart Top Rear Housing - 6 9

3. Position the computer face down.

4. Remove four screws and loosen the fixed screw (at the top) on the rear housing.

Take Apart Top Rear Housing - 7 0

5. Position the computer right side up. Push down and pull out on the rear housing to unhook the rear housing tabs that connect to the inner bezel.

Take Apart Top Rear Housing - 7 1

6. Lift the top rear housing off the computer.

Take Apart Divider Panel - 72

Divider Panel

Many service parts, such as the speakers, power/ analog/video board, side panels, cables, and the headphone board, are connected to the divider panel. The divider panel is the metal chassis with EMI foam, part number 9224044, shown on the next page.

Take Apart Divider Panel - 73

This is the divider panel, service part number 922-

4044.

Take Apart Power/Analog/Video Board - 74

Power/Analog/Video Board

Before you begin, discharge the CRT, rest the computer on an ESD mat or other soft surface and remove the following:

• bottom housing

• front outer bezel

• top rear housing

Note: There are two power/

analog/video boards, part number 661-2347 (with a switch at SW901) and 661-

2370. Refer to “Identifying

the Power/Analog Boards”

Take Apart Power/Analog/Video Board - 75

mentioned later in this chapter.

Take Apart Power/Analog/Video Board - 76

±Warning: This product

contains high voltage and a high-vacuum picture tube. To prevent serious injury, discharge the CRT.

1. Disconnect the microphone connector located near the top of the CRT.

2. Unwrap the bendable cable wraps in the upper left and upper right corners of the CRT.

3. Disconnect the anode cap.

Take Apart Power/Analog/Video Board - 77

4. Lift the degauss cable out of the way to access the side panel screws.

5. Using a narrow shaft screwdriver, remove the four side panel screws (two on each side) that attach the left and right side panels to the inner bezel.

Take Apart Power/Analog/Video Board - 78

6. Open the CRT cable clamps. Remove the wires from the cable clamps.

Take Apart Power/Analog/Video Board - 79

7. Partially lift the side panels (with the power/ analog/video board attached to the divider panel) up and off the inner bezel to gain access to connector P501 located at the bottom of the power/ analog/video board.

Take Apart Power/Analog/Video Board - 80

8. Disconnect P501 and P701 on the power/ analog/video board. The cables are located near the high voltage capacitor.

Take Apart Power/Analog/Video Board - 81

9. On the other side of the CRT neck, disconnect the brown degauss cable, P901, from the power/ analog/video board. Remove P901 from the cable clamp.

Take Apart Power/Analog/Video Board - 82

10. At the very bottom of the power/analog/video board, near the bottom of the CRT, disconnect P902, which is part of the audio/headphone/ LED/speaker cable assembly.