Apple power mac g5 User Manual
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14 Power Mac G5 Basics Features Overview PowerPC G5 — The Power Mac G5 computer incudes the new 64-bit PowerPC G5 processor running at 1.6, 1.8, 2.0, 2.3, 2.5, or 2.7 GHz, well beyond the speeds of G4 processors. Serial ATA hard drives — Unlike older parallel drives, the new serial ATA drives in the Power Mac G5 offer up to 150 MB/s data throughput. The 7200 rpm drives come in 80, 160, 250, or 400 GB capacity. PCI-X slots — Higher-bandwidth PCI slots allow for greater amounts of data when using expansion cards that demand high performance. Both 100 and 133 MHz PCI-X slots are included in higher-end Power Mac G5 computers. For more information, see the “AGP/PCI Card” topic in the Take Apart chapter. 8x AGP bus — This bus provides a higher amount of data transfer to and from the graphics card. Both NVIDIA and ATI graphics cards are offered for the Power Mac G5. USB 2.0 — All USB ports on the Power Mac G5 support the USB 2.0 standard, which accommodates more high speed peripherals. Digital audio in and out — The Power Mac G5 introduces two new optical audio (S/PDIF) ports, allowing for optical audio input and output. These ports are in addition to the existing analog sound input and output ports. Cooling zones — Nine case fans and blowers are logically grouped into four separate cooling zones in the Power Mac G5. Each zone is software-controlled by the system to only cool when necessary, making for a more efficient (and quieter) cooling solution. ATA/100 bus for optical drives— This technology allows optical storage to read/write data faster. Double-layer SuperDrives — Power Mac G5 (Early 2005) 16x SuperDrives support double-layer (DVD+R DL) discs. Double-layer discs have two layers of data, allowing the SuperDrive to read and write on either layer, almost doubling the storage to 8.5GB. Interleaved DDR RAM —The Power Mac G5 requires pairs of DIMMs, which improves performance. Different models require either DDR 333 or DDR 400 RAM. DIMMs must be installed in pairs of equal size and kind. For more information, see the “Memory (DIMMs)” topic in the Take Apart chapter. Liquid Cooling System — The Power Mac G5 (June 2004 Dual 2.5 GHz and Early 2005 Dual 2.7
Power Mac G5 Basics 15 GHz) models feature a liquid cooling system that is more efficient than a traditional heat sink. This system provides a continuous flow of thermally conductive fluid that transfers heat from the processors. The heated fluid then flows through a radiant grille, where air passing over cooling fins returns the fluid to its original temperature. DDR Memory Depending on the model, Power Mac G5 computers have either four or eight Dual Inline Memory Module (DIMM) slots for Double-Data-Rate (DDR) Synchronous Dynamic Random-Access Memory (SDRAM) devices. The computers ship with a minimum of 256 MB of RAM, installed as a pair of 128 MB DIMMs in two of the DIMM slots. You can install additional DIMMs, provided they are installed in pairs of equal size. A diagram marked on the logic board near the slots illustrates how the pairs must be installed. To determine the types of DIMMs to install, refer to the table below: DIMM Slots DIMM Speed Maximum Amount 4 (two banks of 2 slots)333 MHz, PC 2700 up to 4 GB 8 (two banks of 4 slots)400 MHz, PC 3200 up to 8 GB In addition, DIMMs must fit these specifications: 2.5 volt 184-pin module Maximum number of memory devices on DDR SDRAM:16 Nonparity Non-error-correcting (NECC)* *Note: Although they do not take advantage of error-correcting (ECC) RAM features, Power Mac G5 computers can also use ECC memory. • • • • •
16 Power Mac G5 Basics Video The Power Mac G5 computer comes with a graphics card installed in the AGP slot. All graphics cards support dual displays in either extended desktop or video mirroring mode. The display memory on the AGP card is separate from the main memory. The display memory consists of 64, 128, or 256 MB of DDR video SDRAM. The display memory cannot be expanded by the user. The following table lists the standard and CTO graphics cards used in Power Mac G5 computers. (Port 1 indicates the connector that is next to the logic board when the card is installed.) Original G5 Graphics CardsVideo SDRAMPort 2Port 1 NVIDIA GeForce FX 5200 Ultra64 MB DDRDVIADC ATI Radeon 9600 Pro64 MB DDRDVIADC ATI Radeon 9800 Pro128 MB DDRDVIADC NVIDIA GeForce 6800 Ultra DDL*256 MB DDRdual-link DVI TV out dual-link DVI TV out June 2004 G5 Graphics CardsVideo SDRAMPort 2Port 1 NVIDIA GeForce FX 5200 Ultra64 MB DDRDVIADC ATI Radeon 9600 XT128 MB DDRDVIADC ATI Radeon 9800 XT*256 MB DDRDVIADC NVIDIA GeForce 6800 GT DDL*256 MB DDRdual-link DVI TV out dual-link DVI TV out NVIDIA GeForce 6800 Ultra DDL*256 MB DDRdual-link DVI TV out dual-link DVI TV out Early 2005 G5 Graphics CardsVideo SDRAMPort 2Port 1 ATI Radeon 9600128 MB DDRsingle-link DVIsingle-link DVI TV out ATI Radeon 9650256 MB DDRdual-link DVIsingle-link DVI TV out NVIDIA GeForce 6800 Ultra DDL*256 MB DDRdual-link DVI TV out dual-link DVI TV out ATI Radeon X850 XT256 MB DDRdual-link DVI TV out ADC * Due to its large size, this card occupies both the AGP slot and the adjacent PCI slot. For this reason, the number of available PCI slots is reduced from three to two.
Power Mac G5 Basics 17 Fan Controller The Power Mac G5 system employs advanced thermal management to keep acoustic noise to a minimum. The system is divided into discrete zones, each with independently controlled fans bringing in cool air from the front of the enclosure, directing it through ducts and exhausting it out the rear. Temperature and power consumption are monitored by the operating system, which communicates with the Fan Control Unit, which in turn controls and monitors fan operation. Note that if Mac OS X is not booted, thermal management will not work correctly. Important: To ensure proper fan and temperature control, you must run Apple Service Diagnostic whenever you replace a processor or logic board with a new processor or logic board. You must also run the diagnostic if you re-install the same processor but in a different connector from the one in which it was originally installed. For more information, see “Thermal Calibration” in the Troubleshooting chapter. Optical Audio Digital data is transmitted to and from the optical audio I/O using special optical cables. The 7.5 mm digital optical connectors on the cables, commonly referred to as TOSLink, are for both input and output and conform to the IEC60874-17 connector standard. The TOSLink friction-lock type F-05 connectors are available from pro-audio, musician’s supply, hi- fi, and other retailers. Analog audio signals are converted to digital data internally. All audio is handled digitally inside the computer, including audio data from the CD or DVD drive and from devices connected to the USB and FireWire ports. Audio data is converted to analog form for output to the internal speaker, the headphones, or the analog output port. Wireless The Power Mac G5 supports wireless networking with an AirPort Extreme Card and AirPort Extreme Base Station or AirPort Express. AirPort Extreme uses the 802.11g wireless standard to deliver data rates up to 54 Mbps. The Power Mac G5 also supports an optional internal Apple Bluetooth module. Bluetooth technology enables short-range wireless connections between desktop and laptop computers and other peripheral devices such as cell phones, PDAs, and printers. Support for Bluetooth is built into Mac OS X and compliant with Bluetooth specification v1.1. It operates on a globally available 2.4 GHz frequency band (ISM band) for worldwide compatibility and has a maximum throughput of 1 Mbps. Important: For proper range and operation, the external Bluetooth antenna and external AirPort antenna must be attached to the Bluetooth and AirPort ports on the back of the Power Mac G5.
18 Power Mac G5 Basics Ports The following ports are included on the front and back panels of the Power Mac G5. For illustrations of the port locations, see the “External Views” topic in the Views chapter. Front Power button Headphone port USB 2.0 port FireWire 400 port Rear AirPort antenna port Bluetooth antenna port Optical audio-out port Optical audio-in port Audio line-out port Audio line-in port USB 2.0 ports (two ports) FireWire 400 port FireWire 800 port 10/100/1000Base-T Ethernet port Modem port • • • • • • • • • • • • • • •
Service Source © 2005 Apple Computer, Inc. All rights reserved. Take Apart Power Mac G5
Power Mac G5 Take Apart 21 General Information Orientation For most take-apart procedures, it is recommended that you lay the computer on its side before removing or installing the part. For proper operation, however, Apple recommends that the unit be run in the upright position. The computer should never be operated on its side with the access panel facing down. Tools The following tools are required to service the computer: Long-handled magnetic Phillips screwdriver (10-inch shaft) Short-handled magnetic Phillips screwdriver Flatblade screwdriver Jeweler’s flatblade screwdriver Nylon probe tool (black stick 922-5065) Needlenose pliers Small wire cutter Long-handled 2.5 mm hex wrench Mat knife and cup hook (to remove locking rivet) Tape (for temporarily holding cables out of the way) Small mirror (for seeing small boards inside the enclosure) Soft cloth (for protect removed parts from scratches) Parts Requiring Enclosure Replacement The following are not separate, orderable parts. To replace them, you must replace the enclosure. Media blower Media fan Hard drive locking latches Hard drive bay Optical drive levers Media shelf Power harness cable, including hard drive power cables Media bay sensor and air deflector sensor cable Rear panel latch • • • • • • • • • • • • • • • • • • • • •
22 Power Mac G5 Take Apart Take Apart Procedures This manual covers several different Power Mac G5 models. Some models may look slightly different from the one shown in the illustrations; however, except where indicated, the following procedures apply to all models.
Power Mac G5 Take Apart 23 Opening the Computer Tools No tools are required for this procedure. Preliminary Steps Shut down the computer. Warning: Always shut down the computer before opening it to avoid damaging its internal components or the components you are installing. Do not open the computer or attempt to install items inside it while it is on. Wait 5 to 10 minutes to allow the computer’s internal components to cool. Warning: After you shut down the system, the internal components can be very hot. You must let the computer cool down before continuing. Unplug all external cables from the computer except the power cord. Touch the metal PCI access covers on the back of the computer to discharge any static electricity from your body. Important: Always discharge static before you touch any parts or install any components inside the computer. To avoid generating static electricity, do not walk around the room until you have finished working and closed the computer. Unplug the power cord. Warning: To avoid damaging its internal components or the components you want to install, always unplug the computer before attempting any take-apart procedure. Put on an ESD wrist strap. 1. 2. 3. 4. 5. 6.
24 Power Mac G5 Take Apart Procedure Hold the side access panel and lift the latch on the back of the computer. Warning: The edges of the access panel and the enclosure can be sharp. Be very careful when handling them. Remove the access panel and place it on a flat surface covered by a soft, clean cloth. Replacement Note: Make sure the latch is in the up position before replacing the access panel. If the latch is down, the access panel will not seat correctly in the enclosure. 1. 2.