Air Port Card

Mac Mini Airport Antenna Detached

Position the screen face down on the cloth.Use a coin or flatblade screwdriver to turn the latch counterclockwise on the access door. 2. Lower the access door to open. 3. Touch the metal EMI shield inside the recessed latch area before touching any components on the main logic board. Detach the antenna from the left guide rail. Remove the protective antenna cap from the end of the antenna and store the cap in a safe place. 6. Slide the AirPort Card into the adapter card. Note It is probably...

IMac Early Exploded View

Mpa Mac10 Exploded View Parts

Cover, VGA Out, Vented 922-4280 922-4317, Snow LED Power Board, w White LED 922-4524 Refer to Colored Service Parts Exploded View LED Power Board, w White LED 922-4524 CD-ROM, 24x 661-2346 CD-RW, 6X 661-2424 DVD-ROM, 6x, 661-2342 DVD-ROM Education CTO only Hard Drive 661-2344 10 GB 661-2327 20 GB 661-2423 40 GB Refer to Colored Service Parts Exploded View

Resolution

Select a resolution for adjustment from the Resolution menu. Note Don't use the control strip or Monitors control panel to set the resolution. 4. Adjust the geometry settings by moving the appropriate slider bar. 5. Click the Save button to save the adjustments for that resolution. Note Repeat steps 2-4 for each resolution when adjusting width, height, horizontal, vertical, keystone, and pincushion. 6. Restart the computer and reset the parameter RAM to save geometry adjustments to the...

Focus Adjustment

Adjustment Pattern Images

Warning This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review the Safety information online at http service.info.apple.com. Select Troubleshoot and Repair, and click on Safety under the Tools list. 1 Remove the bottom and top rear housing to access the focus potentiometer on the Help Gray Bars Black White Red Green Blue flyback transformer. Note Make sure the jumper adjustment tool is installed see previous procedure . 3. Open the Display...

Testing the Power Analog Board Fuse

First remove the bottom housing, front outer bezel, and the top rear housing to access the power analog board. The fuse is located near the AC plug. Warning You must unplug the iMac to do a continuity test at the power supply board fuse. You will need an ohm meter to do a continuity test on the power supply board fuse. Refer to the picture below to located the necessary test point referenced in the following procedure. Unplug the computer to take this reading. Using an ohm meter, touch the red...

The PMU Chip

Ati Chip Imac

The PMU Power Management Unit is a microcontroller chip that controls all power functions for the computer. The PMU is a computer within a computer. It has memory, software, firmware, I O, two crystals, and a CPU. Its function is to Tell the computer to turn on, turn off, sleep, wake, idle, etc. Manage system resets from various commands. Maintain parameter RAM PRAM . Manage the real-time clock. Important Be very careful when handling the main logic board. Remove the battery when handling the...

Thin White Line

A a thin, white horizontal line scrolls from top to bottom, or bottom to top on the iMac display. Adjust the cutoff or white balance using the Display Adjustment and Display Service Utilities on the MacTest Pro CD. See Video in the iMac Adjustments chapter for instructions. Replace the power analog video board. Tinting Video refers to a predominant color tint or color covering the screen. Verify that the iMac unit is not near other equipment such as speakers, radios, phones, fluorescent...

Crt

Warning This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety on Service Source online and discharge the CRT. Rest the computer on an ESD mat or other soft surface, and remove the following 3. Lift the CRT from the inner bezel. Caution Be careful when working around the CRT neck rings. If the neck rings are bumped, the CRT will be knocked out of adjustment, and will require replacement of the CRT. There are two power analog video boards...

Jumper Adjustment Tool

Flyback Transformer Pinout

The jumper adjustment tool 922-4165 must be installed to save cutoff and white balance adjustments to the factory space. Warning This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review the Safety information online at http service.info.apple.com. Select Troubleshoot and Repair, and click on Safety under the Tools list. 1. Remove the bottom housing and the top rear housing to access the video board. 2. With the power off, remove the left ground cable...

Ejecting a CD or DVD Disc Part

The CD DVD eject mechanism is electrical rather than mechanical on the iMac. If you wish to eject a bootable CD-ROM disc at startup, simply hold down the mouse button until it ejects. If the CD is not a bootable disc, simply wait for the iMac to boot and drag the CD icon to the trash can. If this fails to release the CD, there is an eject button which can be activated by a small, blunt object such as a paper clip. The button is located on the right side of the CD slot. Note that the power must...

Screen Voltage

Warning This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review the Safety information online at http service, info, apple, com. Select Troubleshoot and Repair and click on Safety under the Tools list. before performing the cutoff and white balance adjustments 1. Remove the bottom housing and the top rear housing to access the flyback transformer that contains the screen voltage potentiometer. 2. With the power off, remove the left ground cable from...

HFS Plus Formatted Drives

The hard drive in the iMac is formatted with HFS Plus also referred to as Mac OS Extended format . It is important to note that Norton Utilities version 3.5 is not compatible with HFS Plus or Mac OS Extended format , and in fact, can destroy data on the hard drive. Norton Utilities version 3.5.3 or 3.5.2 will not attempt to repair a drive formatted with Mac OS Extended format and versions 3.5.1 and earlier cannot recognize that a hard drive is in Mac OS Extended format and can result in hard...

Symptom Cure Tables Startup Problems Before the Finder Appears

If you have trouble starting up the iMac, and the problem occurs before the Finder appears on the screen, you may have either a software or a hardware problem. Following are troubleshooting tables with problem symptoms that you may see before the Finder appears. Possible causes for each symptom can be found in the left-hand column with the corresponding fixes in the right-hand column. The troubleshooting information is presented in the order of the most probable cause and fix therefore, Apple...

Whats New and Different

Important Unlike previous iMac models, some versions of the iMac Early 2001 logic boards include a thermal pad 922-4364 to help cool the microprocessor. If this pad is not replaced when the main logic board is separated from the divider panel assembly, the microprocessor may overheat and become damaged. The following logic boards use the thermal pad 661-2509, Ver. 2 400 MHz , 661-2425 500 MHz and 661-2426 600 MHz . It is crucial that a fresh thermal pad be used each time you detach the logic...

Searching the Knowledge Base

In the Knowledge Base, use the expert search to locate troubleshooting articles. In the expert search window, type in the keywords kssts and imac, click the Use ALL words AND radio button and then click the Continue button see Figure 1 below . Here are some other keywords you can use to locate iMac articles kimac for original imac or generic iMac articles kimacsl for iMac slot loading kimacs2k for iMac Summer 2000 kssadj for Service Source adjustment articles kssev for Service Source exploded...

Cutoff Adjustment

Auto White Balance Adjustment For Crt

Warning This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review the Safety information online at http service, info, apple, com. Select Troubleshoot and Repair and click on Safety under the Tools list. whenever you replace the CRT or the power analog video board prior to the white balance adjustment Note Set the Screen Voltage if you haven't done so already. Refer to Screen Voltage mentioned earlier in this section. 1. Remove the bottom housing and...

EMI Cover

Position the computer upside down, resting the computer on an ESD mat or other soft surface. 1. Remove the six screws on the EMI cover. 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.

Down Converter Board

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following Note 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. Note Remove SDRAM to make cable removal easier. On the back of the CD HD carrier, disconnect the logic board cable connector Disconnect the antenna if it's connected to the AirPort Card, or it it's...

Microphone

Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety on Service Source online. Before you begin, discharge the CRT, rest the computer on an ESD mat or other soft surface, and remove the following 1. Unwrap the bendable cable wrap. 2. Disconnect the microphone connector. Pull the microphone from the inner bezel. 1. Insert the microphone into the inner bezel with the loop facing down, toward the CRT. 2. Push the microphone...

Important Take Apart Information

The take apart procedures for the iMac Early 2001 computers are identical to take apart procedures for iMac Summer 2000 slot loading computers. The slot loading iMac is referenced in all the pictures in this chapter. Visible Differences on the iMac Early 2001 North American models have white power-on LEDs New styles including Blue Dalmation and Flower Power, in addition to Indigo and Graphite North American 500 MHz and 600 MHz models - utilize a thermal pad 922-4364 to help cool the...

White Balance

Applevision Geometry

monitor has been on for at least 10 minutes. jumper adjustment tool is connected to the video board refer to Jumper Adjustment Tool mentioned earlier in this section . 1. Open the Display Service Utility and select the Gray Bars test pattern from the Pattern menu. 2. Adjust the red, green, and blue drive controls until there is no predominant color. 3. Select White from the Pattern menu to display the all-white test pattern. 4. Hold the light meter against the center of the all-white screen....

Distorted Video

Distorted Video refers to a problem with the screen geometry or focus. Adjust the focus using the Display Adjustment Utility on the MacTest Pro CD. See Focus in the iMac Adjustments chapter for instructions. Screen geometry is out of adjustment display is off center, sides or top of the screen are not straight, etc. . Adjust the screen geometry using the Display Adjustment Utility on the MacTest Pro CD. See Geometry in the iMac Adjustments chapter for instructions. Screen cutoff or white...

Kbase Til Article 58622

In a No Power situation, the system is completely dead. There is no LED, no hard drive power, and the screen is completely black. Refer to Testing for Power earlier in this chapter for instructions on how to test for power at each component referenced in this procedure. Bad power cord, connection, or outlet. - Verify the power outlet is good. - Try a known-good power cord to determine if the existing power cord could be the problem. Make sure the power cord is connected securely at both ends....

Logic Board

Down Converter Imac

Before you begin, position the computer upside down, resting the computer on an ESD mat or other soft surface and remove the following 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. Note Remove SDRAM to make cable removal easier. On the back of the CD HD carrier, disconnect the logic board cable connector Disconnect the antenna if it's connected to the AirPort Card, or it it's attached...

Cursor Problems

This section deals with a cursor that moves on the screen, but clicking the mouse has no effect or double-clicking the mouse does not open an application, disk or server. Reset parameter RAM. Hold down lt Command gt lt Option gt lt P gt lt R gt during startup but before Welcome to Macintosh appears. Boot off the system CD that came with the unit. Does the cursor work now Yes Reinstall system software. You must use the system software CD that came with the unit to get the correct version of Mac...

At the Logic Board

Pmu Logic Board

With the iMac placed with the CRT face down on a soft surface, remove the bottom housing and the EMI cover to access the logic board. Testing J9 for 5 V Trickle Power on the Logic Board You will need a volt meter to test for power on the logic board. Refer to the picture on the next page to locate the necessary test point referenced in the following procedure. Plug in the computer, but leave the iMac powered OFF. Ground the black probe on the volt meter to the logic board screw, as shown in the...

Resetting the PMU on the Logic Board

Resetting the PMU Power Management Unit on the logic board can resolve many system problems. Whenever you have a unit that fails to power up, you should follow this procedure before replacing any modules. 1. Disconnect the power cord and check the battery in the battery holder BT1 . The battery should read 3.3 to 3.7 volts. If the battery is bad, replace the battery, wait ten seconds, and then reset the PMU refer to the next step . If the battery is good, go to the next step. 2. Press the PMU...

USB Problems

Corrective Error Messages

USB problems refer to symptoms or issues that may occur with external USB devices that are attached to the iMac. This could include Apple and or third-party USB devices. Not enough power for the USB device to function. The following error message will appear confirming that a device cannot function at all due to a lack of power. This lack of power depending on the device can be a result of a disconnected external power source, or not enough power available from the hub the device is connected...

Sotiam Bottom Housing With Housing Flip Foot

Before you begin, position the computer face down, resting the computer on an ESD mat or other soft surface. 1. Using a plastic flatblade screwdriver, remove the VGA vented cover. 2. Remove the two screws near the flip foot. 3. Remove the video out access door from the bottom housing. 4. Remove the two outer screws located near the video out port. bottom housing uses two sizes of screws. The two shorter screws attach near the flip foot. 5. Pull the bottom housing off the computer. 1. Align the...