Power Supply Board Fuse
There is a fuse on the AC line on the iMac power supply board. The fuse is located at F901 near the bottom right corner of the installed power supply board as you are facing the back side of the board . This fuse is an orderable service part and can be replaced by Service Providers. The fuse is included in the No Power section of the Troubleshooting chapter as a module to check if power problems occur in the system. Instructions for how to test the fuse are included in the Testing for Power...
White Balance
Note Perform the white balance adjustment after the monitor has been on for at least 10 minutes. 1 Use Display Service Utility to display the Gray Bars test pattern. 2 Set the contrast control clockwise to maximum and the brightness control to the center detent position. 4 Using a hex-head plastic adjustment tool, alternately adjust the red, green, and blue background controls until there is no predominant color in the four darkest bars. Note The darkest bar must remain completely black...
Subwoofer Speaker Assembly
Before you begin, remove the following Note The subwoofer speaker assembly is in the bottom of the chassis. Caution Review the ESD precautions in Bulletins Safety. 1 Lay the right side of the computer on a clean, smooth surface. 2 Using a T1 0 torx screw driver, remove the screws that secure the subwoofer speaker assembly to the bottom of the chassis. Pull the 2-pin connector from the audio monitor connection subassembly in the upper rear corner inside the chassis. 4 Pull the subwoofer speaker...
To set up a PPPoE connection
Have your user name, password, and if required, the domain name server DNS address from your ISP available as you configure your network see page 71 . 1 In Network preferences, choose Built-in Ethernet from the Show pop-up menu. 2 Click PPPoE and select Connect using PPPoE. 3 Type the information into the corresponding fields. If you want all users of your computer to use the same connection method, select Save password. Note To connect automatically when you start a TCP IP application, such as...
Transferring Files to Another Computer
You have several ways to transfer files or documents to or from your iMac G5. You can easily transfer files using the Setup Assistant. For more information, see Transferring Information to Your iMac G5 on page 8. You can transfer files via the Internet using .Mac or another Internet account. Go to www.mac.com for more information. If your computer is connected to an Ethernet network, you can transfer files to another computer on the network. To access another server or computer, open a Finder...
Side Covers
Before you begin, remove the top cover. Left Side Cover Tab Left Side Cover Tab 1 Release the tab that secures the left side cover and lift off the cover. Right Side Cover Right Side Cover 2 Release the tab that secures the right side cover and lift off the cover. Rear Cover Rear Cover
New Housing Color
In August 1 999, a new version of the Studio Display (21 CRT) was introduced. The display performance and internal circuitry remains the same as the original version. However, the new version offers a new housing color. Unlike the original colors of translucent blue and white, the new version of the display is translucent graphite and white. Important The housing parts (rear housing, bottom housing with colored control panel buttons, intermediate bezel, front bezel, product ID label, and USB...
Power Adapter Serial Number
The thermal pad is located on the bottom housing. A new thermal pad is included with the logic board and the bottom housing, and the pads can be ordered separately as a kit part number The logic board or the bottom housing is replaced The pad is torn, withered, or damaged Important Never use thermal paste in place of the thermal pad. You must replace the thermal
Troubleshooting Tips
When troubleshooting Power Macintosh systems, keep in 1 If a Power Macintosh system does not power up, you should first attempt to reset the logic board. Instructions are provided in the Additional Procedures chapter. 2 With Power Macintosh computers, you must install noncomposite RAM SIMMs only, and the RAM SIMMs must be installed in like pairs (that is, the same size and speed). Additional troubleshooting information is provided in the Symptom Charts section of the Troubleshooting chapter...
Make a Bootable USB Drive of OS X 10.8 Mountain Lion from the Recovery Hard Drive
On every OS X 10.8 Mountain Lion install a hidden partition is present to enable a method for Mountain Lion to be reinstalled on the machine, it is known as the Recovery Partition or drive and is 650mb in size. If you bought a new machine from Apple you have OS X 10.8 already installed but no back up disk and since you haven't bought the OSX Lion 10.
Reset Forgotten Admin Password OSX 10.8 Mountain Lion
The passwords for all accounts on OSX 10.8 Mountain Lion admin and standard users can be reset and changed when booted from the Recovery Partition on OSX. Boot into Recovery PartitionReboot into the Recovery Drive by choosing the Apple' menu Restart, hold down the command' + r' keys on the keyboard during the start up process when you see the start up screen you can let go. When the machine boots eventually you will see the OS X Utilities screen.
Identifying SE Logic Boards
Two logic boards are available as exchange modules for the Macintosh SE. If you are replacing the logic board of an SE that was originally shipped with a 1.4 MB SuperDrive, use logic board 661-0536. If you are replacing the logic board of an SE that was originally shipped with an 800K floppy drive, or an SE that has been upgraded to use a 1.4 MB SuperDrive, use replacement logic board 661-0526. Follow these guidelines to help identify the correct exchange module If the customer's battery is...
Saving SHSH Blobs from Cydia to Local Directory with Tiny Umbrella
Cydia saves your iPhones' SHSH blobs to their servers when the app is installed on the iPhone, the SHSH blob file is a security hash file that allows your iPhone to install a particular version of Apple's iOS, you can see which ones are saved for your device by checking out the top of the screen when you launch the Cydia app on the iPhone.
Resetting the Logic Board
System Management Controller SMC Reset The System Management Controller SMC is a chip on the logic board that controls all power functions for the computer. If the 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 It is also recommended that the SMC be reset after a logic board, ambient board, or...
How to identify your iMac
On the bottom of your iMac stand, you'll find a label with the serial number printed on it This label also provides other information, including the computer configuration and an EMC number EMC No. . The EMC number is unique for different iMac models just make note of the EMC number on the bottom of your computer and refer to the step 1 below to identify your model. 1. The EMC number for the Intel Core Duo model is 2105 for the 20-inch and 2104 for the 17-inch. 2. From the Apple menu, choose...
Math Coprocessor
Caution The PowerBook Duo Dock contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins Safety. Note You can add a Motorola 68882 math coprocessor to the logic board of the original Duo Dock, thereby increasing the overall performance of the Macintosh Duo System. Note The Duo Dock II includes a math coprocessor and therefore does not need this upgrade. 1 Position the math coprocessor with the beveled edge of the chip toward the front of the dock. 2...
Modem and DAA Cards
Before you begin, remove the following lnterconnect-to-logic-board cable Note The modem is a Macintosh PowerBook 550c option. This procedure explains how to install the modem and DAA cards and also includes special instructions on how to remove the modem. 1 Slide the modem card under the RAM card guides and connect the modem card to the motherboard. 2 Pull up and remove the modem cap. 3 Install the modem port frame on the DAA card. 4 Note The connector for the DAA card is on the underside of...
C Upgrade
Disconnect the power adapter Remove the end clutch covers Remove the center clutch cover Remove the trackball assembly Remove the display assembly Caution The display cable is fragile and should be handled with care. Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins Safety. Case Bottom, CPU Stiffener, and Logic Board Assembly Case Bottom, CPU Stiffener, and Logic Board Assembly Note A PowerBook Duo 280 280c upgrade...
Logic Board
Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness & Speaker Grill Left & Right Clutch Covers Ethernet or Ethernet Modem Card To avoid damage to its pins, lift the PCMCIA switch board straight up and off. 3 Using your fingers, disconnect the LED connector and gently guide the cable out of its 5 tabs on the CPU stiffener. 4 Lift off the air flow deflector, if present. (Note The PowerBook G3 does not include an air flow deflector.) 5 Using your fingers,...
Series Upgrade
RoverBook Duo 2300 Before you begin, do the following to disassemble the PowerBook Duo 200 being upgraded Remove the main battery. Remove the keyboard Remove the end clutch covers Remove the top case. Remove the hard drive Remove the backup battery Remove the display CPU stiffener assembly Remove the microphone cable, on-off board or modem , and optional RAM from the logic board Caution The PowerBook Duo contains CSMOS devices that are very susceptible to ESD damage. Review the ESD precautions...
Hard Drive
Disconnect the power adapter Remove the end clutch covers Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins Safety. Caution PowerBook cables are fragile and easily torn or damaged. Handle all cables with care. 1 Remove the three self-threading screws that secure the hard drive to the CPU stiffener. 2 Using an IC extractor, disconnect the hard drive cable. Replacement...
Self Threading Screws
Caution Improperly installed self-threading screws could damage the PowerBook Duo. Thread the screws properly and do not overtighten them. Caution To prevent damage to the circuitry, do not use magnetic screwdrivers when working on Apple systems. The PowerBook 200 systems use both machine screws and self-threading screws. Be aware when you are replacing a self-threading screw, and follow these guidelines Never overtighten self-threading screws. Before tightening a self-threading screw, back the...
Floppy Drive and Mount
Before you begin, remove the following Caution Review the ESD precautions in Bulletins Safety. Note To remove the floppy drive, you must remove the drive mount. Lift the LED holder on the front of the case and pull out the LED. 2 Remove the screw from the drive mount. 3 Pull up on the paper tab and disconnect the hard drive data cable from the logic board. Disconnect the floppy drive cable and hard drive power cable from the logic board. 5 Release the latch and pull the mount toward the rear of...
The DDS Tape Drive
The Power Macintosh G3 Minitower and Macintosh Server G3 offer a DDS-3 tape drive as a build-to-order option. This internal DDS-3 tape backup drive and accompanying software can perform full or partial backup and restore procedures for all of the data on the computer's hard drives. In addition, the tape drive automatically performs error correction and data compression of the files that are backed up and restored.The error-correction feature helps ensure a high level of data integrity. The...
Specifications
Canon HX LBP print engine 3 ppm in color 12 ppm in black, cyan, magenta, or yellow 1 ppm for transparencies 600x600 dpi with Color PhotoGrade Enhanced 600 dpi grayscale imaging (effective 200-line screen halftone, 122 gray levels) Semiconductor laser GaAlAs Wavelength 780 nm Output power 1 mW The specifications for the I O controller board are as follows AMD Am29030 30-MHz microprocessor 8 MB of ROM (including 39 Type 1 fonts) 12 MB of RAM (16 MB on CLW 12 660) 8 MB soldered + 4 MB (or 8 MB)...
Service Source
Studio Display 17 CRT, 16 VIS, 2002 Apple Computer, Inc. All rights reserved. Warning This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety from the displays product area of rollover links on Service Source online. Warning Never use a grounding wriststrap until after discharging the CRT and setting up an ongoing ground connection. Warning When the rear housing is removed, avoid the sharp sheet-metal edges of the EMI shield, board...
Laserwriter Select 360 Test Page
Select 360 High Voltage Power Supply The LaserWriter Select wiring diagram can be found on the next page. The detail in this document is too small to read easily at 100 view. You should either zoom into the diagram using the zoom tool above, or print the diagram on a laser printer with a resolution of 300 dpi 600 dpi preferred . - 5VA- READY IN-USE PAPER-OUT -JAM - 5VA- READY IN-USE PAPER-OUT -JAM OPTIONAL FEEDER LASER OPTIC ASSEMBLY REGISTRATION PAPER DELIVERY SENSOR SENSOR 1. Connect the...
PRAM and Power Manager Reset
Caution Resetting parameter RAM (PRAM) erases the contents of the RAM disk, if there is one. Resetting PRAM also restores the default settings in most control panels. After you reset PRAM, be sure to check any custom settings for the desktop pattern, memory, network, AppleTalk, trackpad, power conservation, and so forth. Reset zap PRAM from the shutdown state. Note that resetting PRAM when the computer is shut down also resets the power manager. Follow these steps to reset PRAM 1 Unplug the AC...
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. Note that resetting the SMC does not reset the PRAM. Resetting the SMC will not resolve issues in which your computer is...
Fire Wire Technology
This section explains what FireWire technology is and gives specific information on Apple Computer's FireWire card, which ships as an optional build-to-order module on the Power Macintosh G3 Desktop. FireWire technology refers to Apple Computer's cross-platform implementation of the high-speed serial data bus defined by IEEE Standard 1394-1995 that can move large amounts of data between computers and peripheral devices. A digital interface - no need to convert digital data into analog for...
Ultra Wide SCSI Card
Ultra Wide SCSI support is offered on the Power Macintosh G3 Desktop as an optional feature via an Ultra Wide SCSI PCI card (p n 661-201 1). If present, this card is installed in the first PCI slot on the logic board. Connecting Additional Internal Devices If you add an internal drive to the Ultra Wide SCSI bus, you need to assign it a SCSI ID number in the 8 to 15 range. Devices assigned to numbers 2 through 6 may not work reliably. Only internal SCSI devices may be attached to the primary...
System Management Controller SMC Reset
The System Management Controller SMC is a chip on the logic board that controls all power functions for the Xserve. If the Xserve is experiencing any power issue, resetting the SMC may resolve it. The SMC controls several functions, including Telling the Xserve when to turn on, turn off, sleep, wake, idle, and so forth Handling system resets from various commands It is also recommended that the SMC be reset on any new logic board after it is installed as part of a repair. Note that resetting...
Power but no video computer begins to start up fan and hard drive spins Caps Lock key lights up when pressed but there
An image may be barely present on the screen, but with no backlight clearly illuminating the image. In this case, the system is working properly except for the backlight. Refer to No display or dim display troubleshooting symptom to resolve this issue. 1. Reseat memory cards. Try known-good memory. If you or the customer do not fully seat the memory, the computer will not start up. See Knowledge Base articles 303083, Intel-based Mac Power On Self Test RAM...
Flashing question mark appears on the screen
Note This system will only boot with the version of Mac OS X system that shipped with this computer or later. It does not support booting into Mac OS 9. 1. Start up from the MacBook Pro Mac OS X Install Disc 1 DVD that came with the computer (hold down the C key during restart). 2. When the Installer opens, select Disk Utility from the Installer menu under Utilities. 3. When Disk Utility opens, all mounted disk and volumes will be listed on the left hand side. If you don't see the internal hard...
No Power No Video
The computer will not power on no sleep light, no fan movement, no hard drive spin-up, no Caps Lock LED illumination when pressed, and no display illumination . Note After each step, check that the system is not supplying power to the logic board. If you see the sleep LED come on or the Caps Lock LED illuminate when the key is pressed, then the system is indeed drawing power. In this case, hold down the power button for six seconds to insure the system is shut down before working on the...
No display or dim display but computer appears to operate correctly if dim display shows startup icon andor desktop
Try known-good power outlet, power adapter and power cord. 3. Make sure the F1 key is not stuck down. 4. Press F2 (with the fn key pressed and not pressed) to increase the screen brightness setting. 5. Open Display system preference panel and check brightness. If works, replace keyboard. 6. Reset PRAM. Restart the computer, then hold down the Option-Command-P-R keys until you hear the startup sound at least one additional time after the initial startup...
Troubleshooting
The first part of this chapter contains quick-reference troubleshooting information for the Personal LaserWriter 300 320 and LaserWriter 4 600 PS. We encourage you to review and print out this chapter before troubleshooting a printer. At the end of this chapter are troubleshooting flowcharts and tables. If a table name clearly addresses your problem, you can go directly to that table. If not, you should go to the flowchart associated with the version of the printer you are working on. The...
Battery Replacement
Before you begin, remove the top cover. Warning If handled or discarded improperly, the lithium battery could explode. Review battery handling and disposal instructions in Bulletins Safety. Caution Review the ESD precautions in Bulletins Safety. Using a small flat-blade screwdriver, pry open the latch at the end of the battery holder and lift off the cover. 2 Grasp the battery and remove it from the holder. 3 Return the battery to Apple for proper disposal. For battery packaging and labeling...
Removing the Glass Panel
Apple strongly recommends wearing clean lint-free gloves whenever handling the glass panel. The gloves protect the glass panel from body oils, dirt, and other contaminants. Put on a pair of clean gloves with the rubberized-side of the gloves on the palm side of your hand. 2. Position the computer on the rear cover, on a soft protective lint-free surface, with the stand facing you 3. Clean off the suction cups, making sure they are free of contaminants. It may be necessary to wash the suction...
DSL Cable Modem or LAN Internet Connections
If you connect to the Internet using a DSL or cable modem or Ethernet LAN, ask your ISP or network administrator how you should configure your Internet connection Manually With a manual configuration, your ISP or network administrator provides a static IP address and other information that you enter in Network preferences. Using Dynamic Host Configuration Protocol DHCP With a DHCP configuration, the DHCP server automatically enters the information for you. Using Point-to-Point Protocol over...
Liquid Cooler Disassembly
Tilt the processor inlet frame to the left and then up to unlatch the plastic piece from the heatsink. Note The processor in this procedure is secured by eight screws requiring a long-handled 2.5 mm hex wrench. 2. Loosen the four hex screws marked below, but do not remove them from their standoffs. 3. Loosen the four remaining hex screws but do not remove them from their standoffs. 3. Loosen the four remaining hex screws but do not remove them from their standoffs. 4. Hold the heatsink by...
Replacing Mitsumi Keycaps
Black stick Apple part number 922-5065 or other nonconductive nylon or plastic flatblade tool Before you begin, remove the battery. The Mitsumi keyboard comes in three versions ANSI, ISO, and JIS. Refer to the following keyboard layouts to help identify them. i amp 6 1 5 6 3 i J 33 Like the Darfon keyboard, the Mitsumi keyboard is integrated in the top case and cannot be removed from the top case. The Mitsumi keyboard comes in three versions ANSI, ISO, and JIS. The square keycaps for all three...
LVDS Cable with USB Line
Black stick Apple part number 922-5065 or other nonconductive nylon or plastic flatblade tool Permanent marking, felt-tip pen 1. Note the placement of the strips of tape that secure the LVDS cable and the USB line to the LCD panel. 2. Because the protective sheath for the flex cables can be delicate, use light pressure to hold the cables in place as you carefully peel up the strips of tape just enough to free the cables. 3. Disconnect the LVDS cable by pulling the connector straight down from...
Inverter Cable
Black stick Apple part number 922-5065 or other nonconductive nylon or plastic flatblade tool 1. With the display assembly resting on a clean, soft cloth, note the position of the inverter cable in relation to the left clutch barrel. 2. Remove the tape from the left clutch barrel. 3. Remove the 3-mm long ground screw, and disconnect the inverter cable from the left end of the inverter board. 4. Remove the inverter cable from the display assembly. 5. Replace the inverter cable, and reassemble...
Accessing the Diagnostic LEDs
The iMac G5 17-inch iSight has four built-in diagnostic LEDs on the main logic board that can help you troubleshoot the computer. Follow the steps below to access the LEDs. 1. Shut down the computer and disconnect all cables except the power cord. 2. Place a soft, clean towel or cloth on the desk or flat surface. Grasp the sides of the unit and slowly lay it screen-down on the cloth, with the bottom facing you. 3. Raise the stand and use a Phillips 2 screwdriver to loosen the two captive screws...
Diagnostic LEDs
The iMac 20-inch 2007 has four built-in diagnostic LEDs on the main logic board that can help you to troubleshoot the computer. The four LEDs are located to the right of the memory slot, under the hard drive data cable. It may be necessary to carefully remove the hard drive data cable to view the LEDs. It may be necessary to carefully remove the hard drive data cable to view the LEDs. Indicates that the trickle voltage from the power supply has been detected by the main logic board. This LED...
Power Button on the Midplane Board
The internal power button gives you the ability to power on the computer with the back cover off the computer.The power button is the top button of the two buttons, located to the left of the diagnostic LEDs. To power the computer on with the back cover off 1. First remove the back cover. 3. Press the power button with your finger or a nylon probe tool. The LEDs will come on indicating the computer status. 4. To shut the computer off with the back cover off, press the power button for at least...
PowerOn Self Test POST Error Codes
The computer automatically performs a power-on self test when it is turned on after being fully shut down not a restart . This section describes what to do if you hear beeps during startup. When this occurs, the sleep indicator light stays on, occasionally flashing. MacBook Air relies on a combination of tones and blinking sleep indicator light flashes to display power-on self test POST error codes. If the logic board has a RAM chip issue, the screen remains black and the LED blinks once per...
Mac Book Air Battery Diagnostic at Startup
If the MacBook Air's diagnostic LED displays five flashes upon startup, and the pattern repeats after a brief pause, the computer's battery may require service. If the power adapter is connected to a working power source, the MacBook Air will continue to start up normally however, the battery should still be serviced. This 5-flash LED diagnostic may also occur when waking the computer from sleep if the power adapter is connected and the battery requires service. This is intended to indicate a...
Remove the processor heatsink cover
Using an ohm meter, measure the resistance across Terminal 1 and Terminal 2 for CPU A. Refer to the Power Supply Verification photo for terminal locations. Hold the meter's probes on the terminals for 5 seconds minimum. Nominal resistance readings should be above 200 ohms. If the resistance is below 10 ohms, replace the power supply. 5. Check for trickle voltage from the power supply. Refer to Power Supply Verification in this chapter. If verification fails, replace power supply. 6. Verify...
Startup Failures
When testing a computer for the following symptoms, remove the side access panel so you can better observe or listen for fan movement. Note Be sure to check the Memory and Power-On Self Test topics in the General Information section of this chapter. Incorrect installation of DIMMs or incompatible memory will not allow the system to start up correctly. For information on how to correctly install DIMMs, see the Memory (DIMMs) topic in the Take Apart chapter. Important For troubleshooting...
Power Issues
The display has no picture or color and no sounds can be heard 1. Verify power outlet is good. Plug a different device into the socket to ensure there is power, or plug the iMac G5 into another outlet. 2. Check the power cord. Use a known good power cord. 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 the back of the computer. 4. Remove keyboard, mouse, and other peripherals such as...
Problems with floppy disks and floppy disk drives
If you can't eject a floppy disk in the usual way, by selecting the disk's icon and choosing Put Away from the Special menu or by dragging the disk's icon to the Trash, try the following in order Hold down the X and Shift keys and press the number 1 key on your keyboard. Shut down the computer. If the disk isn't ejected, hold down the button on your trackpad or other pointing device while you turn the computer on again. Locate the small hole near the disk drive's opening, and carefully insert...
Setting up your Apple Talk network connection
To set up your AppleTalk network connection, you must specify the port you use to connect your computer to the network. Larger networks use zones to create logical groupings of computers, printers, servers, and other network devices. For example, a network might have a zone for each floor in a multistory office building. If your network has more than one zone, you can choose the zone in which your computer is located. The zone you choose should be the zone that is automatically selected in the...
BatteryPcmcia Module
Before you begin, disconnect the power adapter. Note This procedure covers removal of the main battery, second battery or PCMCIA expansion module, and battery contact cover. Important Before removing the battery, use the Macintosh Shut Down command. Otherwise, all RAM contents will be lost. Caution The PowerBook 500 Series contains devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins Safety. 1 Slide the release...
Memory FBDIMMs and Memory Riser Cards
The Mac Pro Early 2008 computer has two memory riser cards with a total of 8 memory slots. On each card, the slots are arranged as two banks of two slots each. The computer comes with a minimum of 2 GB of memory, installed as a pair of 1 GB fully buffered, dual inline memory modules FB-DIMMs in two of the DIMM slots. Additional pairs of 1 GB, 2 GB, or 4 GB FB-DIMMs can be installed in the open DIMM slots, for a maximum of 32 GB of memory. It's important to install FB-DIMMs in matched pairs of...
Mac Pro Assembly
Using a long-handled, magnetized 1 Phillips screwdriver, remove the screw at the top rear of the front fan assembly that mounts the assembly to the logic board. 2. Remove the second Phillips screw at the bottom front of the assembly. 3. Place one hand on each end of the fan, lift straight up, and remove the fan from the enclosure. Replacement Note Before re-installing the front fan assembly in the enclosure, make sure that the fan cables are routed correctly in the fan channel. Replacement...
Serial Number Location
The Mac Pro 8x serial number is located on the configuration label, directly below the configuration description. lt v Because Mac Pro 8x is a product configuration of the original Mac Pro, Mac Pro 8x computers do not have serial numbers distinct from Mac Pro serial numbers. There is also no separate Mac Pro 8x product pull-down list in GSX. When using a computer's serial number to look up Mac Pro 8x parts in GSX, be aware that you will receive a list of parts for both Mac Pro and Mac Pro 8x ....
Mac Pro Cpu Heatsink
Disconnect the 2-pin cable for the upper processor CPU A heatsink from the logic board. 2. Using a long-handled, magnetized 3 mm flathead hex screwdriver, loosen the four captive mounting screws for the upper processor heatsink in the order indicated below. 3. Lift the heatsink straight up and out of the enclosure. 4. Disconnect the cable connector for the lower processor CPU B heatsink. 5. Using a long-handled, magnetized 3 mm flathead hex screwdriver, loosen the four captive mounting...
Removing the Front Bezel
Position unit on rear cover back . 2. Tilt up the front bezel and remove three screws along the bottom. Warning The ambient light sensor is located next to the center screw. Don't mistake the ambient light sensor for a screw. Sticking a screwdriver or other sharp object in the ambient light sensor could damage the computer. 3. Slightly bending the upper quarter of the access tool card will help engage the latch more securely. Refer to the Access Tool Modification if the bezel is difficult to...
Replacing the Glass Panel
Put on a pair of clean gloves with the rubberized-side of the gloves on the palm side of your hand. 2. Install the LCD display panel onto the computer if it was removed. 3. Replace the font bezel if it was removed, connect the microphone cable and replace the bezel screws. 4. Locate the sticky silicone roller and the dust removal pad. Remove the protective covering on the silicone roller and peel the protective cover off the dust removal pad. 5. Holding the sticky paper with your free hand,...
Resetting the PMU on the Logic Board
The PMU Power Management Unit is a microcontroller chip that controls all power functions for the server. The PMU is a computer within a computer. Its function is to tell the server 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 logic board. The PMU is very sensitive and touching the circuitry on the logic board can cause the PMU to crash. If the PMU...
CRT Discharge
Warning This product contains high voltage and a high-vacuum picture tube. To prevent injury, always review the Service Foundations CRT Displays course for safety information. It can be found at Click on Desktop Certification Courses and select the Service Foundations CRT Displays link. Warning Never use a grounding wriststrap until after discharging the CRT and setting up an ongoing ground connection. Whenever the rear housing of the computer is removed and before replacing a module, you must...
Zif Zero Insertion Force
Verify your repair by successfully starting up the system on battery power only. This procedure requires the following tools 00 and 000 Phillips screwdrivers magnetized Black stick nylon probe 922-5065 or other non-conductive nylon or plastic flat-blade tool Multi-compartment screw tray such as a plastic ice cube tray This procedure requires placing the unit upside down on its display housing. Always use a clean, debris-free static mat to avoid scratches and other cosmetic damage to the unit....
Ibook G4 12 Bluetooth
With the computer on a soft cloth, note the routing of the thin, black microphone cable and the LVDS low voltage data signal cable. 2. Disconnect the microphone cable from the logic board near the hard drive. 3. Pull up the flexible tab to disconnect the LVDS cable from the logic board. 4. Peel up any tape that secures the two cables. 5. Without straining the microphone and LVDS cables, carefully pull them up from the computer assembly. 6. Remove the 3.5-mm long screw that anchors the LVDS...
Remove the LVDS Cable
Locate the LVDS cable on the back side of the display panel, and remove the pieces of tape that secure the cable to the panel. Also, carefully remove the tape securing the LVDS connector to the panel connector. 2. Pinch together the connector locking levers, and disconnect the LVDS cable connector. 2. Pinch together the connector locking levers, and disconnect the LVDS cable connector.
Macbook Pro Battery Pinout
Disconnect the optical drive flex cable from the logic board. 2. Without straining the optical drive flex cable, note the position of the LVDS cable beneath it. Pull the pull-tab to disconnect the LVDS cable from the logic board. 4. Lift up the LVDS cable to locate the Bluetooth antenna cable at the edge of the logic board, and disconnect the Bluetooth antenna cable. 6. Disconnect the inverter cable and microphone cable from the logic board. 7. From the lower left corner of the logic board,...
Power Macintosh Logic Board Diagram
There are five versions of the Power Macintosh 7200 logic board one 75 MHz version, two 90 MHz versions, and two 120 MHz versions. The two 90 MHz versions of the logic board are functionally equivalent, as are the two 120 MHz versions However, one of the 90 MHz versions and one of the 120 MHz versions has an auxiliary fan that connects at J70. Important Do not unplug the Peltier device one red wire and one black wire that runs from the processor to the logic board or you will damage the board....
Apple Studio Display
15.1 inches diagonal viewable image size Screen type Thin film transistor TFT active-matrix liquid crystal display 120 horizontal 90 vertical 640 by 480 pixels at 60 Hz, 67 Hz, 72 Hz, or 75 Hz 800 by 600 pixels at 56 Hz, 72 Hz, or 75 Hz 1,024 by 768 pixels at 60 Hz, 70 Hz, 74.9 Hz, or 75 Hz User controls hardware and software On-screen display navigation Menu position vertical, horizontal Information display status Function adjustment Menu off On-screen display functions Tracking coarse, fine...
Main Battery
Before you begin, disconnect the power adapter. Note This procedure also covers removal of the main battery door. Important Before removing the main battery, use the Macintosh Shut Down command. Otherwise, all RAM contents will be lost. Warning The main battery contains toxic materials. Review battery-handling and disposal instructions in Bulletins Safety. 2 Using the battery door as a handle, pull out the main battery. 3 Slide the battery door completely open. 4 Pull the end tab until it...
RAM Expansion Card
Before you begin, remove the following Caution The PowerBook 1 50 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins Safety. Caution Handle the RAM expansion card by the edges only. Do not touch any components on the card. This procedure explains how to install the RAM expansion card kit. The kit is an option for the PowerBook 1 50 and includes a RAM expansion card, adapter, brace, and mounting screw. 1 Caution Be careful not to flex the RAM...
Classic II Upgrade
Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap Never use a grounding wriststrap until after discharging the CRT. Note A Macintosh Classic II upgrade kit upgrades a Macintosh Classic to a Macintosh Classic II. The upgrade kit includes a Classic II logic board, a Classic II...
Resetting the Power Manager Unit PMU
The PMU reset key sequence has been changed. Use the following procedure or the PMU Reset pad see PMU RESET pads on logic board, below . 1. If the computer is on, turn it off. 2. Disconnect the power adapter and remove the main battery. 3. Hold the power button down for five seconds, then release. 4. Install the main battery and connect the power adapter. 5. Press the power button to restart the computer. The pads are located near the edge of the logic board, just above center of the hard...
How to Reset the PMU on the Logic Board
Resetting the PMU (Power Management Unit) on the logic board can resolve many system problems. Note Whenever you have a unit that fails to power up, follow this procedure, starting with step 3, before replacing any modules. 1. Save open documents and quit all open applications. 2. Turn the computer off by choosing Shut Down from the Special menu (if using Mac OS 9), or choose Shut Down from the Apple menu if using OS X. 3. Unplug all cables, except the power cord, from the computer. 4. Place...
EMac ATI Graphics
To quickly identify the eMac (ATI Graphics) computer from t he original eMac, look at the user access door on the back of the computer. The user access door on the eMac (ATI Graphics) computer is white. The original eMac has a silver user access door. 2. There are two new logic boards with faster processors 661-2854 (1GHZ) with EEE code NMA and the 661-2853 (800 MHz). 3. The eMac (ATI Graphics) uses the AirPort Extreme Card for wireless networking. The original AirPort card can not be used in...
Powerbook Logic Board
Audio in pul Atk FireWire lO l ttAS T Ethernet. The PMU Power Management Unit is a micro controller 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 The PMU is very sensitive and touching...
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...
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 you have replaced a module, reinstall the original module before you proceed to the next cure. Apple Hardware Test is a diagnostic tool for detecting...
Power Button pads on logic board
With the top case removed, the power button is disconnected. Instead of having to reconnect the top case to turn on the system, there are two pads on the logic board that can be shorted across with a tool like a flat blade screwdriver to act as the power button. These pads are located about 5cm left of the back left corner of the optical drive, 1-1 2cm above the notch for the top case flex cable. It is marked POWER BUTTON. The pads are separated with a vertical white line. Note The component...
Reset the PMU with the Top Housing Off
You can also reset the PMU by directly pressing the PMU reset switch located on the logic board. Follow these steps to access the PMU reset switch on the logic boar 1. Unplug all cables from the computer. 3. If necessary, remove the internal frame to access the battery. 4. Measure the voltage of the battery in the battery holder. The battery should measure 2.6V to 3.0V. If the battery does not have minimum voltage, replace the battery. After replacing the battery, wait 10 seconds and then reset...
Preliminary Steps Uru
Before you begin, remove the following AirPort Card if installed Rib frame and heat exchanger 1. With the top case on a soft cloth, notice the placement of the transparent, orange Kapton tape and the routing of the PMU ribbon cable. 2. Use a black stick to peel off the Kapton tape from the PMU ribbon cable. Reserve the ribbon cable for the replacement top case. 3. Before installing the replacement top case, make sure it includes the following Fan heatstaked to top case Power button and board...
Symptom Charts Startup
Remove RAM card (if present) and restart computer. If startup sequence is normal, replace RAM card and retest. Reseat RAM card and check connection. Remove floppy drive from media bay and restart computer. If startup sequence is normal, insert floppy drive and retest Disconnect hard drive cable and restart computer. If startup sequence is normal, reconnect cable and retest. Startup failure Upgrade to System Enabler 1.2.1 or later. Refer to Apple occurs when using Software Updates on Service...
System Status LEDs
Power supply is providing trickle power. Normally OFF only flashes during boot cycle Normal sequence indicates control has passed from EFI operations to the OS. If light stays on after boot cycle, EFI is crashing. Important The red DS9C3 LED warns that the Xserve is in sleep mode. When this LED is ON, do not remove or replace PCI expansion cards or FB-DIMMs, because the Xserve is still powered on. If the DS9C4 LED is OFF, do the following Check that the AC cord is connected to a working AC wall...
Whats New
The following table shows the main feature differences between models at product introduction PC2-5300 667 MHz DDR2 FB-DIMM 240-pin 1 GB 2x512 PC2-5300 800 MHz DDR2 FB-DIMM 240-pin 2 GB 2x1GB 80 GB Serial ATA 300 7200 rpm 73 GB 300 GB 750 GB 80 GB Serial ATA 300 7200 rpm 73 GB 300 GB 750 GB 1TB FW 400 one at front FW 800 two at rear Serial-Attached-SCSI SAS drive modules supported Power supply redundancy supported Built-in video out via mini-DVI port PCI-X and PCI-E expansion cards supported...
Reinstalling software using Remote Install Mac OS X
Use Remote Install Mac OS X on the remote computer whose optical disc drive you want to share when you want to do one of the following tasks on the MacBook Air Reinstall Mac OS X and other software that came with the MacBook Air Use Disk Utility to repair the MacBook Air hard drive Note You can also perform these tasks using a MacBook Air SuperDrive. Refer to the next section. To use Remote Install Mac OS X 1. Insert the Mac OS X Install Disc 1 into the optical disc drive of the computer you...
Powerbook G4 Ram Slot Fix
Raise the display so you can access the keyboard. 2. Make sure the keyboard locking screw, located in the small plastic tab next to the Num Lock key, is not in the locked position. The iBook comes with the keyboard unlocked, so unless you or someone else locked the keyboard, you can skip this step. To unlock the keyboard, turn the screw 1 2 turn. Release the keyboard by pulling down on the keyboard release tabs located to the left of the F1 and F12 keys , then lift the top portion of the...
Powerbook G4 15 Inch Logic Board Replacement Thermal
Warning Flexing of the logic board can break solder joints to parts. Guard against flexing, to prevent damage to the board. 2. Remove the two screws holding the right speaker and move the speaker and its wires down and away from the logic board. 3. Remove the logic board screws, shown. Note If a right ambient light sensor board was removed, that procedure already removed the upper right logic board screw. 4. Important To prevent damage to the logic board chips, the thermal material between the...
General Information
At only three pounds, the MacBook Air is the most mobile Macintosh yet. Its sleek, new, ultra-thin enclosure streamlines it for portability while its features offer a completely wireless experience. Components in this system are smaller and more integrated than previous Macintosh portables thus, a watchmaker's finesse is crucial when handling repairs. Likewise, the MacBook Air's new system architecture requires troubleshooting methodology specific to its design. Because there are fewer parts,...
Procedure
Check for bent pins on the CRT neck see Figure 1 . Remove the video board and observe the pins on the CRT neck. Make sure all of them are straight. If the pins are not straight, carefully attempt to straighten them with a flatblade jeweler's screwdriver or needlenose pliers and test the board again. 2. Make sure the video board is properly seated on the CRT neck see Figure 2 . The top picture shows the video board improperly seated the bottom picture shows it properly seated. When the video...
At the 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...