Service Source eMac ATI Graphics/ USB 2.0/2005 Updated 12 July 2006 © 2005 Apple Computer, Inc. All rights reserved.
Service Source Repair Extension Program eMac (USB 2.0) © 2006 Apple Computer, Inc. All rights reserved.
eMac Repair Extension Program for Video and Power Issues The eMac Repair Extension Program (REP) for Video and Power Issues covers repairs for eMac (USB 2.0) computers exhibiting issues due to specific component failure. Program instructions and the CompTIA code for eMac REP repairs are provided in this chapter. Overview The eMac REP for Video and Power Issues covers eMac (USB 2.
qualifies. If the computer does not qualify, contact the customer for resolution. Note: Some eMac (2005) models were manufactured with serial numbers within the same upper number ranges noted above, but these models are not covered under the eMac REP for Video and Power Issues. The eMac REP covers computers based on their system serial number and the symptoms diagnosed, not on the serial numbers of the logic boards. All eMac computer serial numbers are printed inside the optical drive door.
Repair Strategy Required service parts for this program are available so that certified technicians may repair eligible eMac (USB 2.0) computers at an Apple service provider location. Service providers should create the repair for an eligible eMac in the usual manner, whether or not the computer is covered by an Apple warranty or extended service agreement. However, it is extremely important that you select the specific CompTIA code created for this program (see “Special CompTIA Code”).
Special CompTIA Code Apple has created the following CompTIA code to use for repair on eMac (USB 2.0) computers eligible under the eMac REP for Video and Power Issues. Use CompTIA Code 559: eMac MLB REP when replacing a logic board under the eMac REP, whether or not the computer is covered by warranty or an extended service agreement. Europe For repairs covered under the eMac REP for Video and Power Issues, IMCs in Europe must order logic boards as stock parts using the part numbers listed above.
Verification and Repair Procedure To verify whether the eMac REP for Video and Power Issues covers the repair of an eMac (USB 2.0) computer, do the following. 1. Verify that the eMac (USB 2.0) computer exhibits one or more of the following symptoms: • Scrambled or distorted video • No video • No power • Intermittent system freezes or crashes • System crashes during the startup process 2. Verify that the computer is eligible for the eMac REP for Video and Power Issues.
4. Affected capacitors have a “+” sign stamped into the top of the capacitor. Note: Not all capacitors stamped with a “+” sign are faulty, so further inspection is required to determine whether any capacitors are faulty.
5. Failed capacitors no longer have a flat top and can be identified by signs of bulging or venting (shown below). The top may bulge upward. In severe cases, the top of the capacitor may also show signs of electrolyte venting, which appears as a small amount of tan-colored paste around the top of the capacitor. One or both of these signs indicate that the capacitor has failed or will likely fail. Warning: Use caution when handling failed electronic components, and be sure to wash your hands afterwards. 6.
Service Source Basics eMac ATI Graphics/USB 2.0/ 2005 © 2005 Apple Computer, Inc. All rights reserved.
Overview What’s New (May 2005) eMac (2005) Apple introduced new eMac models, featuring faster PowerPC G4 processors, more RAM, larger hard drives, faster graphics and more graphics memory, and an improved SuperDrive. • Revised logic boards • 661-3539 1.42 GHz board: • 661-3610 1.
What’s New (April 2004) eMac (USB 2.0) Apple announced a revision to the eMac product family. Powered by G4 processors running at up to 1.25GHz, with a system bus of 167 MHz, the new eMac models come with Mac OS X v.10.3 and include Apple's iLife application suite, providing iMovie, iPhoto, and iTunes as a standard software configuration. The changes include the following: • No-optical drive configuration: This computer is available in a low-cost no-optical drive configuration • Mac OS X 10.
• Inner AirPort Door (blank, used on the no-optical drive configuration only) • 922-6406 • Heatsink with/clip • 076-1079 • Wireless Antenna • 922-6401 • Wireless Antenna clips • 922-6405 • Kit, Feet, Captive Screws • 076-1034 Service and Support The service and support strategy for the new eMacs is the same as previous eMac models. Overview eMac ATi Graphics/ USB 2.
What’s New (October 2003) Apple announced a revision to the eMac product family. Powered by G4 processors running at up to 1GHz, the new eMacs come with Mac OS X v.10.3 “Panther,” and include Apple's iLife application suite, providing iMovie, iPhoto, and iTunes as a standard software configuration. The revision to the eMac (ATI Graphics) includes the following: • Revised logic board, part number 661-3014, 1 GHz, Ver.
Overview eMac ATi Graphics/ USB 2.
Service Source Take Apart eMac ATI Graphics/ USB 2.0/2005 © 2005 Apple Computer, Inc. All rights reserved.
Tools The following tools are recommended for the take apart procedures. • 2.5 mm hex (for rear housing) • Nylon probe tools (922-5065) • Phillips #1 screwdriver • Phillips #2 screwdriver • Jeweler’s screwdriver set • Needlenose pliers • ESD wriststrap and mat • CRT discharge tool Note: Do not use a power driver on the rear housing screws. Tools eMac ATI Graphics/ USB 2.
CRT Neck/Display/Analog Assembly Handling Information Handling Important: It is imperative that proper handling and packaging guidelines be followed when working with the display/analog assembly. Do NOT lift, handle, bump, or manipulate the CRT neck/neck board (see arrows below) on the Display/Analog assembly. Modules damaged by mishandling are NOT covered by Apple Warranty. Apple Authorized Service Providers can be liable for broken CRT necks due to improper handling.
Rear Housing Tools • 2.5 mm hex (for the rear housing) • Phillips #2 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. Rear Housing eMac ATI Graphics/ USB 2.
Procedure 1. Remove seven hex screws around the perimeter of the rear housing. 2. Remove the three Phillips screws; one used for the user access door, and two used for the feet. Note: Newer models have a captive screws. 4 - eMac ATI Graphics/ USB 2.
3. Gently lift the rear housing up about four inches. 4. Disconnect the power button cable located on the inside the rear housing. 5. Lift the rear housing off the computer. Rear Housing eMac ATI Graphics/ USB 2.
User Access Door Tools This procedure requires the following tools: • Phillips #2 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. 6 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the screw on the user access door (shown below). Note: Newer models have a captive screw. 2. Gently remove the access door. User Access Door eMac ATI Graphics/ USB 2.
Feet Tools This procedure requires the following tools: • Phillips #2 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. 8 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the two foot screws. Note: Newer models use captive screws. Feet eMac ATI Graphics/ USB 2.
Power Button Tools • Needlenose pliers Note: Follow the Replacement Note procedure (step 2) only if you are replacing a defective power button. Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access panel. • Remove the feet. • Remove the rear housing. 10 - eMac ATI Graphics/ USB 2.
Procedure 1. Disconnect the power button cable from the power button located inside the rear housing. 2. Lift the rear housing off the bezel. Replacement Note: Refer to the topic on the next page, “Power Button Cable Check” before replacing the rear housing. Power Button eMac ATI Graphics/ USB 2.
Power Button Cable Check 1. Check that the power button cable in drawn tight before you attach the other end of the cable to the power button (located inside the rear housing). 2. Also, check that the cable is tucked under the chassis tab (as shown) and that the black mark on the cable lines up with the chassis (circled below). 12 - eMac ATI Graphics/ USB 2.
Power Button Replacement 1. Continue with this procedure only if you are replacing a defective power button. With a needlenose pliers, push the power button through the retaining ring. The power button will pop off rear housing and the retaining ring may get stuck on the pliers. 2. Obtain the new power button and peel the sticky backing off the power button. Position the power button into the hole on the rear housing (as shown below).
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: http://service.info.apple.com/service_training/training.html. 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.
Faraday Plate Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps • • • • • Faraday Plate Place the computer face down on an ESD mat. Remove the user access door. Remove the feet. Remove the rear housing. Discharge the CRT. eMac ATI Graphics/ USB 2.
Procedure 1. Remove the four screws on the Faraday plate. Replacement Note: Note the position of the gray cable (see red arrow) on the top left side of the Faraday plate. Be careful the cable doesn’t get pinched when the Faraday plate is replaced. 2. Gently pry the top half of the Faraday plate away from the chassis in the direction of the arrows. Note: The gray cable (on left) rests in a groove under the Faraday plate. 16 - eMac ATI Graphics/ USB 2.
3. Pull the Faraday plate back (#1) and then push it down (#2) to unhook the metal tabs on the Faraday plate from the cutouts (see graphic on the next page) in the chassis. 4. Continue to pull the Faraday plate back (#1) to unhook the tabs from the chassis. Pull the Faraday plate up (#2) to remove it from the chassis. Faraday Plate eMac ATI Graphics/ USB 2.
Faraday Replacement 1. Looking from the top down, line up the metal tabs with the cutouts in the chassis (circled on the right and left) and the slots on the Faraday plate with the white plastic guides on the bezel (circled on the right and left sides of the optical drive). 2. Raise the Faraday plate up and attach it to the frame on the digital assembly. Be careful that the gray cable (shown in step 2 on the previous page) does not get pinched in the Faraday plate. 18 - eMac ATI Graphics/ USB 2.
Speakers Tools This procedure requires the following tools: • Phillips #2 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the Faraday plate Speakers eMac ATI Graphics/ USB 2.
Procedure 1. Remove the left and right speaker screws (circled in the top photos). There are three screws per speaker. 2. Disconnect the two spade connectors (see rectangles in the top photos) on each speaker. 3. Lift the speakers out of the front bezel. 20 - eMac ATI Graphics/ USB 2.
Fan Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. Fan eMac ATI Graphics/ USB 2.
Procedure 1. On the left side of the fan, disconnect the fan cable and remove the two screws (circled). 2. On the right side of the fan, remove three screws (the green cable goes to the ground screw). Replacement Note: The screw circled on the top left is a self-tapping screw, and the screw on the bottom left is a fine thread screw. 22 - eMac ATI Graphics/ USB 2.
3. Wiggle the fan cable up and out of the groove in the chassis and then disconnect the fan connector from the board. 4. To remove the fan, turn the computer so the fan is facing you. Grab onto the fan near the AC plug and the bottom right corner of the fan. Gently pull the fan toward you and away from the chassis. Be very careful of the CRT neck. Fan eMac ATI Graphics/ USB 2.
Optical Drive Tools This procedure requires the following tools: • Phillips #2 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. • Remove the Faraday plate. 24 - eMac ATI Graphics/ USB 2.
Procedure 1. Disconnect the data cable and the power cable at the top of the optical drive. 2. Remove the four screws connecting the optical drive to the chassis. 3. Holding the optical drive by the top or bottom end, tilt the optical drive out of the chassis. Replacement Note: Remove the EMI shield off the end of the defective optical drive. Place the EMI shield on the replacement drive. Optical Drive eMac ATI Graphics/ USB 2.
No Optical Configuration Note: There is new configuration on the eMac (USB 2.0) that is sold without an optical drive (shown below). If you decide to add an optical drive at a later date, order the parts mentioned in the Upgrades chapter under the topic “Optical Drive Installation.” 26 - eMac ATI Graphics/ USB 2.
Bluetooth Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat • Remove the user access door • Remove the feet • Remove the rear housing • Discharge the CRT • Remove the Faraday plate Bluetooth eMac ATI Graphics/ USB 2.
Procedure 1. Remove the two screws on the Bluetooth board. 2. With two fingers, gently wiggle the Bluetooth board off the connector on the logic board. 28 - eMac ATI Graphics/ USB 2.
3. Turn the Bluetooth board over and carefully disconnect the Bluetooth antenna cable from the board. 4. To remove the Bluetooth antenna cable, pull the cable through the hole in the chassis. Bluetooth eMac ATI Graphics/ USB 2.
5. WIth the nylon tool (922-5065), pry the antenna fixture off the front bezel. The antenna is attached to the front bezel with double-stick tape. 30 - eMac ATI Graphics/ USB 2.
Digital Assembly Tools This procedure requires the following tools: • Phillips #2 Part Location Digital Assembly eMac ATI Graphics/ USB 2.
Part Location (without optical drive) Note: There is new configuration on the eMac (USB 2.0) that is sold without an optical drive (shown below). The take apart for the digital assembly is the same.
Procedure 1. With the back of the computer facing you, remove the three screws near the top of the digital assembly. 2. On the top left side of the digital assembly, disconnect the power button cable and the video cable Note: The power connector (the smaller connector) was on the other side of the board on previous eMac models. This picture shows the most recent model. Digital Assembly eMac ATI Graphics/ USB 2.
3. Remove two screws; one on each side of the digital assembly. 4. On the bottom left side of the digital assembly, remove three screws.Note: The two screws (towards the top of this photo) are the same type screw; the third screw is a larger, self-tapping screw that attaches to the front bezel. 34 - eMac ATI Graphics/ USB 2.
5. Disconnect the four cable connectors on the bottom left side of the assembly. From left to right the connectors are: microphone, fan, LED, and speakers. 6. Remove the two screws on the bottom right side of the assembly. Note: The screw that attaches to the plastic bezel is a larger, self-tapping screw. Digital Assembly eMac ATI Graphics/ USB 2.
7. Hold the digital assembly by the sides and pull the assembly straight back. The digital assembly disconnects from the blind mate connector (circled) on the chassis. Set the digital assembly aside. 36 - eMac ATI Graphics/ USB 2.
Hard Drive Tools This procedure requires the following tools: • Phillips #2 • Phillips #1 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. Hard Drive eMac ATI Graphics/ USB 2.
• Remove the fan. • Remove the Faraday plate. • Remove the digital assembly. 38 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the four screws along the back of the metal chassis. Note: The two outer screws are fine thread screws. 2. Gently unhook (see circle) and lift the hard drive carrier up and off the chassis. Flip the drive carrier over to access the data and power cables. Hard Drive eMac ATI Graphics/ USB 2.
3. With the drive carrier flipped over (#1), disconnect the data cable (#2) and the power cable (#3) from the hard drive. 4. To remove the hard drive from the carrier, remove two screws on the side of the carrier. 40 - eMac ATI Graphics/ USB 2.
5. Tilt the drive to access the cable. Disconnect the cable from the hard drive. Note: If you are replacing the drive carrier, review the procedure “Thermal Pad and EMI Replacement” below. Thermal Pad and EMI Replacement 1. If you are replacing the hard drive carrier, attach the thermal pad, and two rubber bumpers to the top side of the carrier. Note: These pieces come with the replacement carrier. Then, go on to the next step. Hard Drive eMac ATI Graphics/ USB 2.
2. Attach two the EMI pads to the bottom side of the carrier. 42 - eMac ATI Graphics/ USB 2.
Logic Board Heatsink Tools This procedure requires the following tools: • Screwdriver to pry the heatsink clip Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. • Remove the Faraday plate. • Remove the digital assembly. • Remove the hard drive carrier. Logic Board Heatsink eMac ATI Graphics/ USB 2.
Procedure 1. Remove the one screw attaching to the chassis (on the top left side). Next, with a nylon probe tool (922-5065), push the heatsink clip through the hole in the logic board. The clip will come loose on the top side of the logic board. 2. Unclip the other end of the heatsink clip on the top side of the logic board. 44 - eMac ATI Graphics/ USB 2.
3. Lift the heatsink from the logic board. Warning: The the CPU heatsink should have minimum handling of the fins. Be very careful when handling this part. Replacement Note: Whenever the heatsink is removed, the bottom side of the heatsink and the top of the microprocessor must be cleaned and new thermal paste must be applied to the microprocessor. If the mating surfaces are not cleaned and thermal paste is not applied, the CPU may overheat and become damaged.
Thermal Paste Application The microprocessor uses a heatsink/thermal pipe to transfer heat away. Whenever the heatsink is removed, the bottom side of the heatsink and the top of the microprocessor must be cleaned and thermal paste must be applied. If the mating surfaces are not cleaned and thermal paste is not applied, the CPU may overheat and become damaged.
2. Carefully remove the old thermal paste from the surface of the microprocessor. Gently remove the paste with a plastic stylus or nylon probe tool. 3. Squeeze a drop of thermal paste onto the middle of the microprocessor as shown. Thermal Paste Application eMac ATI Graphics/ USB 2.
4. Spread the paste evenly over the processor. Important: On this product, it is critical to spread the paste over the processor, or the chip could overheat. 5. Reinstall the heatsink and the heatsink clip. 48 - eMac ATI Graphics/ USB 2.
Logic Board Tools This procedure requires the following tools: • Phillips #2 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. • Remove the Faraday plate. Logic Board eMac ATI Graphics/ USB 2.
• Remove the digital assembly. • Remove the hard drive carrier • Remove the AirPort Extreme Card (if present) 50 - eMac ATI Graphics/ USB 2.
Procedure 1. Disconnect the optical data cable, the optical power cable and release the heatsink clip. Note: On education models the optical cables are not present because there isn’t an optical drive. 2. Remove the down converter screw that attaches to the chassis frame. Logic Board eMac ATI Graphics/ USB 2.
3. On the left side, disconnect the power button cable and the modem cable. Note: On newer models the power button connector is in the same general location, but on the other side of the logic board. 4. Remove the one screw attaching to the chassis (on the top left side). Push the heatsink clip through the hole in the logic board. The clip will come loose on the top side of the logic board. 52 - eMac ATI Graphics/ USB 2.
5. Unclip the heatsink clip on the top side of the logic board. 6. Lift the heatsink from the logic board. Warning: The the CPU heatsink should have minimum handling of the fins. Be very careful when handling this part. Replacement Note: Whenever the heatsink is removed, the bottom side of the heatsink and the top of the microprocessor must be cleaned and new thermal paste must be applied to the microprocessor.
7. Remove the four screws on the logic board. 8. To remove the logic board from the chassis frame, unhook the chassis clips under the I/O panel and on the top right side of the chassis frame. 54 - eMac ATI Graphics/ USB 2.
9. Hold the board by the down converter (#1) and gently pull the chassis frame (#2) forward, away from the board. Remove the logic board (#3) from the chassis frame. Carefully maneuver the board out of the frame. Important: The microprocessor uses a heatsink/thermal pipe to transfer heat away. Whenever the heatsink is removed, the bottom side of the heatsink and the top of the microprocessor must be cleaned and thermal paste must be applied to the microprocessor.
Logic Board Identification: There is one 800 MHZ board, three 1 GHz logic boards, and one 1.25 GHz board for this product. The boards need to be exchanged like-for-like. Use the EEE codes to identify the boards. The graphic below shows the general location of the barcode label for the logic boards. • 661-2853, 800 MHz: EEE code PLB • 661-2854, 1 GHz: EEE code, NMA • 661-3014, 1 GHz, Ver.
eMac (USB 2.0) 1.25 GHz logic board, 661-3280 Replacement Note: Before returning the logic board to Apple, remove the following items: • I/O panel frame • RJ-11 connector (if present) • Modem board • Memory • Heatsink • Down converter • AirPort Extreme Card (if present) • Bluetooth board (if present) Logic Board eMac ATI Graphics/ USB 2.
Down Converter Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. • Remove the Faraday plate. • Remove the digital assembly. 58 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the screw attaching the down converter to the chassis frame. 2. Turn the logic board right side up. Hold the board by the down converter (#1) and gently pull the chassis frame (#2) away from the board. Remove the logic board (#3) out of the chassis frame. Carefully maneuver the logic board out of the frame. Down Converter eMac ATI Graphics/ USB 2.
3. Important: The down converter board is fragile. Be careful not to flex the board too much when removing or inserting a replacement down converter. 4. Turn the logic board over so you can see the logic board-to-down converter connector. Pull the down converter in the direction of the arrow to disconnect the board from the logic board. 60 - eMac ATI Graphics/ USB 2.
5. Slide the down converter off the logic board in the direction of the arrow. Important: For replacement instructions, refer to the next topic. Down Converter eMac ATI Graphics/ USB 2.
Replacing the Down Converter 1. Important: Be careful when installing the down converter; the board is fragile. Hold the down converter by the top of the board (as shown below). Carefully slide the down converter onto the logic board in the direction of the arrow. 2. With the down converter in place, squeeze the pins (circled below) and the connector together for a solid connection. 62 - eMac ATI Graphics/ USB 2.
I/O Panel Tools This procedure requires the following tools: • Phillips #2 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. • Remove the Faraday plate. I/O Panel eMac ATI Graphics/ USB 2.
• Remove the digital assembly. • Remove the logic board. 64 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the logic board from the chassis frame to access the I/O panel. 2. Remove the two I/O panel screws. I/O Panel eMac ATI Graphics/ USB 2.
3. First, pull the I/O panel away from the ports (#1) on the logic board. Next, carefully pull the I/O fence away from the connectors on the end of the board (#2). 66 - eMac ATI Graphics/ USB 2.
RJ-11 Cable Tools • Nylon probe tool (922-5065) Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. • Remove the Faraday plate. • Remove the digital assembly. • Remove the logic board • Remove the I/O panel RJ-11 Cable eMac ATI Graphics/ USB 2.
Procedure 1. Disconnect the RJ-11 cable from the modem. 2. Turn over the logic board. There is a small pry slot on the board for a screwdriver blade to get behind the connector. See the next step. 68 - eMac ATI Graphics/ USB 2.
3. Carefully push the RJ-11 port connector off the logic board with a nylon probe tool or screwdriver. RJ-11 Cable eMac ATI Graphics/ USB 2.
AirPort Extreme Card Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer so that the front of the computer faces you. 70 - eMac ATI Graphics/ USB 2.
Procedure 1. Press the optical door in on one side and pull the door open on the other side to access the AirPort access panel. AirPort Extreme Card eMac ATI Graphics/ USB 2.
2. Loosen the two captive screws on the access panel. Remove the access panel. Note: On entry level models you won’t see the optical tray when you remove the access panel. The access panel is a”blank” piece of plastic that covers the hole where an optical drive would be present (see next graphic). 3. The picture below shows the entry level eMac model Airport access door . Notice the absence of the optical drive. 72 - eMac ATI Graphics/ USB 2.
4. Remove the access panel. 5. Untuck the clear tab attached to the AirPort Extreme Card. AirPort Extreme Card eMac ATI Graphics/ USB 2.
6. Pull the AirPort Extreme Card out of the slot a little bit to access the antenna connected to the card. 7. Disconnect the antenna cable from the AirPort Extreme card. 8. Pull the tab to remove the AirPort Extreme card from the slot. Refer to the next page to see the internal difference of the entry level eMac. 74 - eMac ATI Graphics/ USB 2.
9. This picture shows removing the AirPort card from the entry level eMac model. Notice the metal optical plate covering the location where the optical drive would be present. AirPort Extreme Card eMac ATI Graphics/ USB 2.
LED Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. 76 - eMac ATI Graphics/ USB 2.
• Remove the fan. • Remove the Faraday plate. LED eMac ATI Graphics/ USB 2.
Procedure 1. Remove one screw and disconnect the LED cable. Important: The connector is very fragile, remove it gently. Lift the LED board off the front bezel. 78 - eMac ATI Graphics/ USB 2.
Front Bezel Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. Front Bezel eMac ATI Graphics/ USB 2.
• Remove the Faraday plate. • Remove the digital assembly • Remove the display/analog assembly 80 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the eight bezel screws. There are three on each side and two at the top of the bezel. Important: DO NOT remove the two larger screws circled below, or the two screws shown in the next photo. If they are removed, the CRT will be out of alignment and the entire display/analog assembly will need to be replaced. 2. Important: On this side of the computer, do NOT remove the CRT screws located under the red circles. The CRT will be out of alignment if these screws are removed.
3. Carefully lift the display/analog assembly off the bezel. 4. Remove the microphone, speakers, and LED from the bezel. 5. Note: Remove the antenna board from the display/analog assembly before returning the display/analog assembly to Apple. Refer to the next procedure, “Antenna Board” for details. 82 - eMac ATI Graphics/ USB 2.
Antenna Board (eMac ATI Graphics) Tools This procedure requires the following tools: • Phillips #2 screwdriver • Needlenose pliers or flat blade screwdriver Part Location Preliminary Steps Before you begin, do the following: • Remove the AirPort Extreme card • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. Antenna Board (eMac ATI Graphics) eMac ATI Graphics/ USB 2.
• Remove the Faraday plate. • Remove the digital assembly. • Remove the displayl/analog assembly. 84 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove one screw on the antenna board. Next, peel back the masking tape and pull the unused end of the antenna through the hole in the digital/analog chassis. 2. Carefully position the computer so that the CRT faces you. Locate the metal antenna bracket at the top of the CRT. Remove the screw on the bracket, then pry the antenna cable from the two clips on the side of the CRT. Antenna Board (eMac ATI Graphics) eMac ATI Graphics/ USB 2.
Antenna Board (eMac USB 2.0) Tools This procedure requires the following tools: • Phillips #2 screwdriver • Needlenose pliers or flat blade screwdriver Part Location Preliminary Steps Before you begin, do the following: • Remove the AirPort Extreme card • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. 86 - eMac ATI Graphics/ USB 2.0/2005 Take Apart Antenna Board (eMac USB 2.
• Remove the Faraday plate. • Remove the digital assembly. • Remove the digital/analog assembly. Antenna Board (eMac USB 2.0) eMac ATI Graphics/ USB 2.
Procedure 1. Remove the cable from the black clip, remove one screw, and pry the AirPort antenna from the AirPort access door plate. This is shown with the display/analog assembly still attached to the front bezel, in a repair situation it would have to be removed. 2. Carefully position the computer so that the CRT faces you. Locate the metal antenna bracket at the top of the CRT. Remove the screw on the bracket, then pry the antenna cable from the clip on the side of the CRT.
Microphone Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. Microphone eMac ATI Graphics/ USB 2.
• Remove the Faraday plate. • Remove the digital assembly. • Remove the display/analog assembly. Procedure 1. Carefully lift the display/analog assembly from the bezel to access the microphone. 2. Remove the microphone cable from the bezel. 90 - eMac ATI Graphics/ USB 2.
Door Assembly Tools This procedure requires the following tools: • Phillips #2 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the fan. Door Assembly eMac ATI Graphics/ USB 2.
• Remove the Faraday plate. • Remove the digital assembly. Procedure 1. Remove the two screws connecting the door to the front bezel. Remove the door from the front bezel. 2. Replacement Note: Transfer the serial number label on the inside of the door to the replacement door. 92 - eMac ATI Graphics/ USB 2.
Memory Tools • No tools are required for this procedure Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Unplug all cables except the power cord, from the computer. • Remove the user access door. Memory eMac ATI Graphics/ USB 2.
Procedure 1. Touch a metal surface inside the computer. Then unplug the computer. Important: Always ground yourself before you touch any parts, or remove/install any components inside the computer. To avoid generating static electricity, do not walk around until you have finished removing or installing the memory and closed the computer. 94 - eMac ATI Graphics/ USB 2.
2. Push the ejectors on the memory slot outward and down so they are in the open position. Remove the memory module. Replacement Note: The memory is designed to fit into the slot only one way. Be sure to align the notches on the module with the small notches inside the slot. Note: The RAM expansion modules used in the eMac (USB 2.0) computers are 184-pin SDRAM DIMMs (dual inline memory modules) that are 2.5 V, unbuffered, 8-byte, nonparity, and PC2700 compliant.
Battery Tools • No tools are required for this procedure Part Location Note: The battery can be accessed through the user access door on the back of the computer. Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Unplug all cables except the power cord, from the computer. • Remove the user access door. 96 - eMac ATI Graphics/ USB 2.
Procedure 1. Touch a metal surface inside the computer. Then unplug the computer. Important: Always do this before you touch any parts, or remove/install any components inside the computer. To avoid generating static electricity, do not walk around until you have finished removing or installing the battery and closed the computer. 2. WIth the nylon probe tool, carefully pry the battery out of the battery holder. Battery eMac ATI Graphics/ USB 2.
Modem (eMac ATI Graphics) Tools This procedure requires the following tools: • Phillips #1 or jeweler’s screwdriver Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the Faraday plate. 98 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the two modem screws and disconnect the RJ-11 cable from the modem. 2. Lift the modem from the connector on the logic board. Modem (eMac ATI Graphics) eMac ATI Graphics/ USB 2.
Modem (eMac USB 2.0) Tools This procedure requires the following tools: • Phillips #1 Part Location Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. • Remove the Faraday plate. 100 - eMac ATI Graphics/ USB 2.0/2005 Take Apart Modem (eMac USB 2.
Procedure 1. Disconnect the RJ-11 cable (#1) from the top of the modem. Remove the two modem screws (#2) and gently pry the board off its connector.The board is fragile; pry the board from the top and bottom. Replacement Note: When replacing the modem, don’t apply pressure to the middle of the board. The board should be pressed into place by holding the modem by the top and bottom. Modem (eMac USB 2.0) eMac ATI Graphics/ USB 2.
Display/Analog Assembly Tools This procedure requires the following tools: • No tools are required Warning: This product contains high voltage and a high-vacuum picture tube. To prevent injury, always review CRT Safety on Service Source online. This link can be found under the list of topics under the iMac icon. Remember, never use a grounding wriststrap until after discharging the CRT and setting up an ongoing ground connection.
Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat • Remove the user access door • Remove the feet • Remove the rear housing • Discharge the CRT. • Remove the fan • Remove the Faraday plate • Remove the digital assembly • Remove the AirPort Extreme Card • Remove the front bezel • Remove the antenna. If you remove everything listed in the steps above, you are left with the display/analog module. There is nothing more to remove from this module.
LHR Coil Tools This procedure requires the following tools: • Phillips #2 AirPort Extreme Card screwdriver Part Location Note: This part is used in Europe for line conditioning. If your computer does not have the LHR coil, skip this procedure. Preliminary Steps Before you begin, do the following: • Place the computer face down on an ESD mat. • Remove the user access door. • Remove the feet. • Remove the rear housing. • Discharge the CRT. 104 - eMac ATI Graphics/ USB 2.
Procedure 1. Remove the screw located at the top of the LHR coil. 2. Disconnect the LHR connector located next to the fuse. 3. Lift the LHR coil from the display/analog frame. LHR Coil eMac ATI Graphics/ USB 2.
Service Source Troubleshooting eMac ATI Graphics/USB 2.0/2005 © 2005 Apple Computer, Inc. All rights reserved.
General Information What’s New (May 2005) eMac (2005) • Revised logic board • 661-3539 1.42 GHz board: • New optical drives: • 661-3538, Combo, 32x • 661-3536, SuperDrive, 8x • New hard drives: • 661-3534, 80 GB • 661-3535, 160 GB • Memory, 333 MHz, DDR • 661-3540, 256 MB • 661-3541512 MB What’s New (April 2004) eMac (USB 2.0) Apple announced a revision to the eMac product family. Powered by G4 processors running at up to 1.25GHz, with a system bus of 167 MHz, the new eMac models come with Mac OS X v.10.
• New hard drives: • 661-3209, 80 GB • 661-3266, 160 GB (CTO) • Memory, 333 MHz, DDR • 661-3322, 512 MB The RAM expansion modules used in the eMac (USB 2.0) computers are 184-pin SDRAM DIMMs (dual inline memory modules) that are 2.5 V, unbuffered, 8-byte, non-parity, and PC2700 compliant. The speed of the SDRAM devices must be rated at 167 MHz (7 ns) or faster. Important: The memory expansion cards (DIMMs) must use SDRAM devices as specified above.
• Faraday Shield • 922-6407 • Optical Plate (used on the no-optical drive configuration only) • 922-6408 General Information eMac ATI Graphics /USB 2.
• Inner AirPort Door (blank, used on the no-optical drive configuration only) • 922-6406 • Heatsink with/clip • 076-1079 • Wireless Antenna • 922-6401 • Wireless Antenna clips • 922-6405 • Kit, Feet, Captive Screws • 076-1034 4 - eMac ATI Graphics/USB 2.
What’s New (October 2003) The eMac (ATI Graphics) computer was updated in October 2003. The changes include the following: • Revised logic board, part number 661-3014, 1 GHz, Ver. 2 (EEE code Q11) The EEE code/barcode location is shown below. • New optical drives: • 661-3012, CD-ROM, 32x, drive • 661-3015, Combo, 32x, drive • 661-3013, SuperDrive, 4x • New hard drives: • 661-3011, 80 GB • 661-3016, 160 GB (CTO) • Mac OS X 10.
What’s New (May 2003) eMac (ATI Graphics) 1. 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.
cannot be addressed in updates to software. On earlier computers, the programmer's switch was used to install a firmware update. Follow these steps in the event that a firmware update is needed for these computers: 1. Shut down the computer. 2. Wait until the computer is shut down and the power button light is off. 3. Press and hold the power button for several seconds. 4.
Logic Board, eMac (ATI Graphics), Top Side Sound Output Port Microphone Connector Sound Input Port USB Ports Fan Power Connector LED Connector Speaker Connector FireWire Ports RJ-11 (Modem Not Shown) Ethernet Port Video Output Port Power Button Connector Video Connector Battery Optical Connector SDRAM Memory Slots PMU 8 - eMac ATI Graphics/USB 2.
Logic Board, eMac (ATI Graphics), Bottom Side Video Processor Hard Drive Connector AirPort Extreme Connector Blind Mate Connector G4 Microprocessor General Information eMac ATI Graphics /USB 2.
Logic Board, eMac (USB 2.0), Top Side The yellow rectangle below show the location of the board’s serial number. Embedded within the serial number is the EEE code for the board. The 1 GHz board has a EEE code of either QDJ or QHL and the 1.25 GHz board has a EEE code of QDK or QHM. 10 - eMac ATI Graphics/USB 2.
Logic Board, eMac (USB 2.0), Bottom Side General Information eMac ATI Graphics /USB 2.
I/O Ports The ports listed from left to right are: • Headphone • Sound out port • USB ports (3) • FireWire ports (2) • Modem • Ethernet • Video out port 12 - eMac ATI Graphics/USB 2.
The PMU Chip 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.
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.
4. Place the computer face down on an ESD matt or soft cloth. Remove the user access door screw. 5 Touch the metal surface inside the computer. Important: Always ground yourself by touching metal before you touch any parts or install components inside the computer. To avoid generating static electricity, do not walk around the room until you have finished the procedure and closed the computer General Information eMac ATI Graphics /USB 2.
6 Unplug the power cord. Remember, to avoid generating static electricity, do not walk around the room until you have finished the procedure and closed the computer 7 Press the PMU reset button (circled below) once and then proceed to step 8. Do NOT press the PMU reset button a second time because it could crash the PMU chip. 8 WAIT ten seconds before connecting the power cord and powering the computer on. If the computer powers on, go to the next step.
Power-On Self Test There is a power-on self test that resides in the ROM of the eMac. This test automatically runs whenever the eMac is powered on after being fully shut down (the power-on self test does not run if the machine is only restarted). If a problem is detected during the test, you will not hear a normal startup chime. Instead, the system will beep as explained below.
Logic Board Battery Important: Apple highly recommends removing the battery when handling the logic board. Make sure to use proper ESD protection when handling modules. The battery on the logic board controls the stored system settings, such as date and time. It is only necessary to test the battery when you can’t power on the computer, or the date and time are reset every time the AC power is removed.
Testing the Battery If the computer has a “No Power” situation, check the battery before replacing modules. A drained battery may be indicative of a crashed Power Management Unit. With the battery in the battery holder (under load), measure the voltage across the battery’s positive and ground terminals. Does the battery measure at least +3.5v? If not, replace the battery and reset the PMU. If the battery does measure over +3.
Display/Analog Voltage Setting and LHR Module Instructions The display/analog (service module) contains a non-switching power supply which is preset at a 220V configuration. The voltage selection is manually set by way of a voltage jumper. This means if you are replacing the display/analog assembly and you will be operating the computer in a 110V environment, you will have to install the voltage jumper on the module.
Procedure 1. Locate the voltage jumper circled below. Note: This jumper won’t be installed on a 220V computer. 2. Next, refer to Table 1 (on the previous page) for the voltage jumper setting and set the jumper accordingly. Warning: Be careful around the CRT. Discharge the CRT before removing or replacing the jumper. 3. Locate the LHR coil jumper circled below. Then refer to Table 1 for the LHR jumper setting and set the jumper accordingly. General Information eMac ATI Graphics /USB 2.
4. Identify if you have the LHR coil (shown below) on the computer. Note: The LHR coil (a line conditioning module) is required in some international countries. 5. If you don’t have an LHR module, install the replacement display/analog assembly and ensure the jumpers are set correctly. If you have an LHR, go on to step 6. 6. If you have an LHR coil, remove the LHR from the faulty display/analog assembly, place the LHR on the replacement digital/analog assembly, and set the jumpers according to Table 1.
Thermal Paste Application The microprocessor uses a heatsink/thermal pipe to transfer heat away. Whenever the heatsink is removed, the bottom side of the heatsink and the top of the microprocessor must be cleaned and thermal paste must be applied. If the mating surfaces are not cleaned and thermal paste is not applied, the CPU may overheat and become damaged.
2. Carefully clean the surface of the microprocessor with a plastic stylus or nylon probe tool (922-5065) to remove the old thermal paste. 3. Squeeze a drop of thermal paste onto the middle of the microprocessor as shown. 24 - eMac ATI Graphics/USB 2.
4. Spread the paste evenly over the processor. 5. Reinstall the heatsink and heatsink clip. General Information eMac ATI Graphics /USB 2.
CRT Neck/Display/Analog Assembly Handling Information Handling Important: It is imperative that proper handling and packaging guidelines be followed when working with the display/analog assembly. Do NOT lift, handle, bump, or manipulate the CRT neck/neck board (see arrows below) on the Display/ Analog assembly. Modules damaged by mishandling are NOT covered by Apple Warranty. Apple Authorized Service Providers can be liable for broken CRT necks due to improper handling.
Symptom Charts How to Use the Symptom Charts The Symptom Charts included in this chapter will help you diagnose specific symptoms related to the product. Because cures are listed on the charts in the order of most likely solution, try the cures in the order presented. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure. If you have replaced a module, reinstall the original module before you proceed to the next cure.
No Power The fan clicks (and may spin briefly), but does not turn on and you may hear the degauss cable fire. 1. Replace the down converter. Hold the down converter by the top of the board (as shown below). Carefully slide the down converter onto the logic board in the direction of the arrow. Important: The down converter board is fragile. Be careful not to flex the board sideways when removing or installing the board. 2.
The computer will not power on. Note: During these steps we may ask you to check for power. Whenever you check for power, plug in the computer and follow the steps. 1. Plug the computer into a known good power outlet. 2. Check the power cord. Use a known good power cord. 3. Verify that the power cord is securely plugged into both the A/C outlet and back of the computer. 4. Disconnect the keyboard, mouse, and all other peripherals (such as speakers). 5.
10. Reset PMU (circled below). Note: On newer models the PMU may be hidden by the optical power cable (see second graphic below). For information on resetting the PMU refer to “How to Reset the PMU on the Logic Board” mentioned earlier in this chapter. Start at step 7 in the PMU procedure. If resetting the PMU doesn’t solve the problem, go on to the next step. 30 - eMac ATI Graphics/USB 2.
Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury: • Review the CRT safety information on Service Source online. • Discharge the CRT. • Never use a grounding wriststrap until after discharging the CRT and setting up an ongoing ground connection. 11. Remove the rear housing. Warning: Make sure the ground screw (see below) is attached to the frame when testing power. Go on to the next step. 12. Check the power button cable.
13. Make certain the power button cable is tucked under the metal tab and the black mark on the cable is lined up with the chassis as shown below. 14. Check the power button. Attach a known good power button to the unit and plug in the computer. Do you have power now? If yes, replace the power button. If no, go to the next step. 15. Unplug the unit. 16. Check the AC connector. Make sure it’s connected. Do you have power now? If yes, test the unit and return it to the customer. If no, go to the next step.
17. Unplug the computer. Check the fuse (see graphic below).You will need an Ohm meter to do a continuity test on the fuse. Using an ohm meter, touch the red and black probes to the two metal points at location F901 and check for continuity (reading of “0”). If the ohm meter registers “0”, the fuse is good. If the meter registers “infinite”, the display/analog assembly should be replaced. 18. Unplug the computer and disconnect the AC connector shown in the photo below. 19. Plug the computer back in.
20. Check for AC voltage. Touch the red probe to the contact for the blue wire, and the black probe to ground or the contact to the brown wire of the AC connector. Do you measure 120V (line voltage)? If yes, go on to the next step. If no, replace the fan assembly. 21. With the computer unplugged, remove the fan assembly. 22. Remove the digital assembly (see the Take Apart chapter for instructions). 23. Reinstall the fan assembly and go on to the next step. 34 - eMac ATI Graphics/USB 2.
24. Reconnect the AC cable connector, the ground wire, and the power cord. Warning: Make sure that the ground screw is attached to the frame before proceeding to the next step. 25. Locate the blind mate connector. Note: You may need a slim or pointed probe to measure voltages. With your black probe grounded, touch the red probe to pins 7 and 8, on the blind mate connector (bottom row of pins). Pins 7 and 8 should read 12.25v. No Power Symptom Charts eMac ATI Graphics /USB 2.
26. Did you measure the correct voltages at the blind mate connector? If yes, replace the logic board. If no, replace the display/analog assembly. 27. If the issue persists after the logic board replacement, replace the down converter board. 36 - eMac ATI Graphics/USB 2.
Random Shut Down While using the computer it just shuts down for no reason. 1. Check the jumper settings, make sure they are set correctly. Refer to the “Digital/Analog Voltage Setting and LHR Module Instructions” mentioned earlier in this chapter. Note: There is one jumper for the voltage and one jumper for the LHR coil. Both jumpers should be installed when the computer is operating in the 110V environment. If the jumpers are set correctly, go on to the next step.
No Video No video to the internal display, the fan is spinning, there is drive activity 1. Reset parameter RAM. Press Command-Option-P-R during startup. 2. The system software could be damaged. Start up from the system CD that came with the computer. 3. Remove the user access door. 4 Touch a metal surface inside the computer. 5. Disconnect the A/C power cord. Press the PMU reset (circled below) on the logic board. Refer to “How to Reset the PMU on the Logic Board” mentioned earlier in this chapter. 6.
Mass Storage Flashing question mark appears on the screen 1. Boot from the system CD that came with the computer and see if the hard drive mounts on the desktop. 2. Boot from Apple Hardware Test (hold down the “C” key at startup). Run both quick and extended tests. Proceed based on any error codes given. See AppleCare Knowledge Base article 112125 - Service Diagnostics Matrix for Error Code information. 3. If no hard drive is found in Drive Setup, verify the hard drive cable connections. 4.
5. Replace the hard drive. 6. Replace the logic board. Hard drive does not spin. 1. Disconnect any connected peripherals. 2. Boot from Apple Hardware Test (hold down the “C” key at startup). Run both quick and extended tests. Proceed based on any error codes given. See AppleCare Knowledge Base article 112125 - Service Diagnostics Matrix for Error Code information. 3. Launch Drive Setup and update the hard drive driver. 4. If no hard drive is found in Drive Setup, verify the hard drive cable connections. 5.
Optical drive tray won’t accept a CD or DVD 1. Check for obstructions on the optical drive door. 2. Replace the optical drive cable. 3. Replace the optical drive. 4. Replace the down converter. 5. Replace the logic board. CD or DVD disc constantly ejects at startup 1. Try cleaning the disc. If it is dirty or scratched, it may not mount. 2. Try a known good disc. 3. Disconnect all peripheral devices, especially the mouse in cases where the disc is constantly ejecting.
CD or DVD won’t mount to the desktop 1. Try cleaning the disc. If it is dirty or scratched, it may not mount. 2. Boot from Apple Hardware Test (hold down the “C” key at startup). Run both quick and extended tests. Proceed based on any error codes given. See AppleCare Knowledge Base article 112125 - Service Diagnostics Matrix for Error Code information. 3. Try a known good disc. 4. Refer to the “Flashing Question Mark” symptoms mentioned in this section. 5.
Sound Out No sound from either internal or external speakers 1. Verify volume setting is correct in system preferences. 2. Verify the computer is not set to “mute”. Press the mute key on the Apple keyboard. 3. Reset parameter RAM. Press Command-Option-P-R during startup. 4. Boot from Apple Hardware Test (hold down the “C” key at startup). Run both quick and extended tests. Proceed based on any error codes given.
Date and Time The computer won’t keep the date and time 1. Turn your computer off by choosing Shut Down from the Apple menu. Unplug all cables, except the power cord, from your computer. Warning: If your internal modem (included on some models) is connected to a telephone line, disconnect the telephone line from the internal modem port before you open the access panel. This prevents electric shock. 2. Place a soft, clean towel or cloth on the desk or surface.
6. Remove the internal backup battery. 7. Wipe off the battery terminals with a cotton swab or Q-tip. Date and Time Symptom Charts eMac ATI Graphics /USB 2.
8. Using the cotton swab or Q-tip, wipe off the terminals of the battery socket. 9. Place the battery back into the battery holder socket. Make sure to align the plus sign (+) on the battery with the one inside the computer. 10. Press the reset button. Locate the PMU reset button inside the computer. Push the button for one second using a pen or pencil. 46 - eMac ATI Graphics/USB 2.
11. Replace the user access panel. 12. Reposition the computer and connect the cables. 13. Gently turn the computer right side up. Then reconnect the cables you disconnected from the computer. 14. Turn the computer on. Press the power button on the side of your computer to turn it on. Warning: Never turn on your computer unless all of its internal and external parts are in place. Operating the computer when it is open or missing parts can be dangerous and could damage your computer.
Sound In No sound is recorded 1. Check setup of the system preferences for the microphone. 2. Check that the microphone is picking up sound by testing the audio in iMovie. Click on the Audio button. Record something. The audio bar on the screen should indicate if the microphone is working. 3. Boot from Apple Hardware Test (hold down the “C” key at startup). Run both quick and extended tests. Proceed based on any error codes given.
Error Beep(s) Computer beeps at startup. 1. RAM expansion DIMMs for the eMac must be PC133 compliant and use SDRAM devices. If the user installs a DIMM that uses EDO or SGRAM devices, the computer will beep several times when the user attempts to restart the computer. 2. Refer to “Power-On Self Test” mentioned earlier in this chapter. Long tone at startup A long tone at startup can indicate that the power button is being held in, or is malfunctioning.
Modem No modem dial tone 1. Verify known-good analog (not digital) telephone line. 2. Verify known-good RJ-11 telephone cable. 3. Verify RJ-11 cable is not plugged into Ethernet port. 4. Inspect RJ-11 connector and modem port for pin damage. 5. Verify RJ-11 cable is firmly installed in the modem port. 6. Boot from Apple Hardware Test (hold down the “C” key at startup). Under “Test Result”, check to see if the Modem reports' Device found'.
USB Printing Problems eMac cannot print to attached known-good printer. 1. Verify that the printer is Macintosh compatible. 2. Verify that you have setup the printer correctly in OS X. 3. Refer to Knowledge Base article 106714, Mac OS X: How to Print 4. Reinstall the printer driver. 5. Switch the printer to another USB port. 6. Check the USB port with a known good USB device like the keyboard or mouse. 7. Replace the printer interface cable. 8. System software is corrupted. Reinstall the system software.
Service Source Upgrades eMac ATI Graphics/USB 2.0/2005 © 2005 Apple Computer, Inc. All rights reserved.
Memory Tools Required • #2 Phillips screwdriver Opening the User Access Door 1. Save all 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 a soft towel or cloth on the desk or surface. Position the computer so the screen is facing down on the cloth. 5. Use a Phillips screwdriver to remove the screw on the user access door. Set the user access door aside. (Figure 2) Figure 2 2 - eMac ATI Graphics/USB 2.
6. Important: To avoid electrostatic discharge, always ground yourself by touching metal before you touch any parts or install components inside the computer. To avoid generating static electricity, do not walk around the room until you have finished installing the memory and closed the computer. Touch the metal surface on the back of the computer. (Figure 3) This helps protect the computer from damage caused by electrostatic discharge. Figure 3 7. Unplug the power cord. Memory eMac ATI Graphics/USB 2.
Removing the Installed Memory 1. Push down the ejectors on the slot of the memory module you want to replace. (Figure 4) Figure 4 2. Holding the memory by both top corners, pull it straight out of the computer. 4 - eMac ATI Graphics/USB 2.
Installing Memory Note: The RAM expansion modules used in the eMac (USB 2.0) computers are 184-pin SDRAM DIMMs (dual inline memory modules) that are 2.5 V, unbuffered, 8-byte, nonparity, and PC2700 compliant. The speed of the SDRAM devices must be rated at 167 MHz (7 ns) or faster. Refer to Kbase article 86718 for more information. Important: The memory expansion cards (DIMMs) must use SDRAM devices as specified above. DIMMs for previous models of eMac or DIMMs that use EDO or SGRAM devices will not work.
3. Align the replacement memory module in the memory slot, apply pressure evenly to both top corners, and push the memory into the slot until the ejectors lock it into place. (Figure 6) Warning: The memory is designed to fit into the slot only one way. Be sure to align the notches in the memory module with the small ribs inside the slot. Figure 6 6 - eMac ATI Graphics/USB 2.
Closing the User Access Door 1. Replace the screw on the user access panel. (Figure 7) Figure 7 2. Carefully turn the computer right side up. 3. Reconnect the power cable. Important: When connecting the power cord, first plug the cord into your eMac, then plug the other end into an electrical outlet or power strip. 4. Press the power button to restart your computer. Warning: Never turn on the computer unless all of its internal and external parts are in place and it is closed.
Optional Stand Installation Tools • The tool is included with the stand. To install the eMac (ATI Graphics) stand: 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. 4. Place a soft towel or cloth on the desk or surface. 5. Turn the computer over to access the screw holes on the bottom. 8 - eMac ATI Graphics/USB 2.
6. The stand attaches to the locations circled below. 7. Remove the screw circled below. Optional Stand Installation eMac ATI Graphics/USB 2.
8. Position the stand in place over the screw holes. 9. Note: The stand slides back and forth. To attach the first screw, slide the stand toward the back of the computer. 10 - eMac ATI Graphics/USB 2.
10. Push the stand forward. Tighten the second screw. 11. Tighten the third screw. Optional Stand Installation eMac ATI Graphics/USB 2.
12. Carefully turn the computer over. 12 - eMac ATI Graphics/USB 2.
AirPort Extreme Card Tools Required • #2 Phillips screwdriver. Opening the AirPort Access Door 1. Save all open documents, quit all open applications, and shut down the computer. 2. Press the optical drive door in on one side and pull the door open on the other side to access the AirPort access panel. (Figure 1) Figure 1 AirPort Extreme Card eMac ATI Graphics/USB 2.
3. Loosen the captive screws on the AirPort access panel using a Phillips screwdriver. (Figure 2) Figure 2 4. Remove the access panel. 14 - eMac ATI Graphics/USB 2.
Removing the Installed Card 1. Untuck the clear plastic tab on the AirPort Extreme card. (Figure 3) Figure 3 2. Pull the AirPort Extreme card out of the slot a little bit to access the antenna cable. (Figure 4) Figure 4 AirPort Extreme Card eMac ATI Graphics/USB 2.
3. Disconnect the AirPort Extreme cable from the port on the card, then completely remove the card from the slot. (Figure 5) Figure 5 16 - eMac ATI Graphics/USB 2.
Installing the Replacement Card 1. The original AirPort Card can not be used in this computer. You must use the AirPort Extreme card. (Figure 6) Note: Previous models of eMac used the original AirPort card. For compatibility information, see AppleCare Knowledge Base article 107440: AirPort Extreme Card: Compatible Macintosh Computers. Figure 6 2. Insert the AirPort Extreme Card, barcode facing up into the AirPort Extreme card slot. (Figure 7) Figure 7 AirPort Extreme Card eMac ATI Graphics/USB 2.
3. Attach the antenna cable firmly to the port on the end of the card. (Figure 8) Figure 8 4. Push the AirPort Extreme card firmly into the slot until you feel the card “snap” into the logic board connector. Note: One quick check to identify if the card is properly installed is to check the plastic tab on the card. The edge of the tab should be almost flush (Figure 9) with the face of the bezel. If the card isn't fully snapped in, more of the tab will be easily visible.
5. Tuck the clear plastic pull-tab on the AirPort Extreme Card into the computer. The tab should tuck over the antenna cable (Figure 10). Figure 10 Closing the AirPort Access Door 1. Replace the AirPort access panel and tighten the captive screws. (Figure 11) Figure 11 2. Reconnect the power cable and restart your computer. AirPort Extreme Card eMac ATI Graphics/USB 2.
Optical Drive Installation The eMac (USB 2.0) is available in a low-cost, no-optical drive configuration. When connected to a network, software can be installed from another computer on the network. If you choose to install an optical drive at a later date, the following parts are required and need to be ordered through Apple Service. Refer to the photographs in the Take Apart chapter or to the Exploded View diagrams for assistance.
Optical Drive Installation eMac ATI Graphics/USB 2.
Service Source Views eMac ATI Graphics/USB 2.0/ 2005 © 2005 Apple Computer, Inc. All rights reserved.
Exploded Views Exploded Views eMac ATI Graphics/USB 2.
Exploded View 1 Hard Drive 661-2855 40GB 661-2856 60GB 661-2857 80GB 661-3011 80GB 661-3016 160GB 661-3309 80GB 661-3534 80GB 661-3535 160GB Heatsink w/ clip 076-1035 076-1079 Logic Board 661-2853 800MHz 661-2854 1GHz (EEE NMA) (EEE Ver.2 NMA)(EEE Q11) 661-3014 1GHz 661-3279 1GHz (EEE QDJ Q11) or QHL) 661-3014 1GHz, Ver. 2 (EEE 661-3280 1.25GHz (EEE QDK or QHM) EEE T6C, T6D, T6G, T6H, T6J, T6K) 661-3610 1.25 (GHz 661-3539 1.
Exploded View 2 Clips, Antenna 922-5933 922-6405 (USB 2.0) Shield, Faraday Plate 922-5875 922-6407 Cable, Antenna 922-5865 922-6401 (eMac USB 2.0) Exploded Views Modem 661-2632 922-6429 (eMac USB 2.0) Bluetooth Board 922-6201 Bluetooth Antenna (Not Shown) 922-6402 eMac ATI Graphics/USB 2.
Exploded View 3 Cable, Microphone 922-6442 Door, Inner, AirPort (On Units w/o Optical Drives) 922-6406 Hex, Screw Captive 922-5262 4 - eMac ATI Graphcs/USB 2.
Shield, Faraday Plate 922-5875 922-6407 Kit, Feet, Captive Screw 922-5128 076-1034 Exploded View 4 Exploded Views eMac ATI Graphics/USB 2.
Logic Boards 6 - eMac ATI Graphcs/USB 2.
Logic Board, Front, eMac (ATI Graphics) Sound Output Port Microphone Connector Fan Power Connector LED Connector Speaker Connector Sound Input Port USB Ports FireWire Ports RJ-11 (Modem Not Shown) Ethernet Port Video Output Port Power Button Connector Video Connector Battery Optical Connector SDRAM Memory Slots PMU Identify the eMac (ATI Graphics) boards by the EEE codes located on the barcode label. The 800 MHz board has a EEE code of PLB, and the 1GHZ boards have a EEE code of NMA or Q11.
Logic Board, Back, eMac (ATI Graphics) Video Processor Hard Drive Connector AirPort Extreme Connector Blind Mate Connector G4 Microprocessor 8 - eMac ATI Graphcs/USB 2.
Logic Board, Front, eMac (USB 2.0) Identify the USB 2.0 boards by the EEE codes located on the barcode label. The 1GHZ board has a EEE code of QDJ or QHL; the 1.25 GHz board EEE code is QDK or QHM. Logic Boards eMac ATI Graphics/USB 2.
Logic Board, Back, eMac (USB 2.0) 10 - eMac ATI Graphcs/USB 2.
