Instruction/ maintenance manual of the product Power Macintosh G3 Apple
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Service Source K Po wer Macintosh G3 Desktop.
Service Source K Hot Issues Po wer Macintosh G3 Desktop.
Hot Issues Introduction - 1 Introduction This chapter is designed to highlight unique or high- priority product issues that you should be aware of before servicing the Power Macintosh G3 Desktop computer. This chapter alerts you to important issues and provides links to other areas in the manual where more complete information can be found.
Hot Issues Shared Logic Board - 2 Shared Logic Board The Power Macintosh G3 Desktop and Minitower computers use the same logic board, but there are jumper settings that differ between them (see “Jumper Location J28” and “Jumper Location J16” in the Troubleshooting chapter).
Hot Issues Power Supply Jumper - 3 Power Supply Jumper The Power Macintosh G3 Desktop logic board has a power supply jumper, which is installed at J28. The setting of this jumper differs between the Power Mac G3 Desktop and Minitower. Failure to install this jumper in the correct position may result in a computer that won’t boot up.
Hot Issues Warranty Sticker - 4 Warranty Sticker There is a warranty sticker that covers the processor module jumper. The customer’s warranty is void if this sticker is tampered with. Service Providers must replace this sticker if they have removed it during servicing to protect the customer’s warranty.
Hot Issues Voltage Regulator - 5 Voltage Regulator There is a removable voltage regulator on the logic board, which comes with the logic board and can also be ordered as a separate module.
Hot Issues ROM DIMM - 6 ROM DIMM The Power Macintosh G3 Desktop logic board uses a ROM DIMM as opposed to soldered ROM. You should not remove the ROM DIMM from the logic board. (See “Logic Board” in the Take-Apart chapter for instructions on how to prepare the logic board for return to Apple Computer.
Hot Issues SGRAM Video Memory - 7 SGRAM Video Memory Power Macintosh G3 computers use SGRAM video memory. Use only SGRAM SO-DIMMs in these machines. Never install the 256K or 512K video memory DIMMs used in older Macintosh computers. (See “SGRAM Video Memory” in the Basics chapter.
Hot Issues Master/Slave Support - 8 Master/Slave Support Some Power Macintosh G3 Desktop computers support adding two ATA/IDE devices to the same ATA/IDE channel, or what is commonly known as master and slave. This configuration provides user with the ability to add additional hard drives or removal media devices to their system.
Hot Issues DVD-ROM Disk Damage - 9 the Take-Apart chapter.) DVD-ROM Disk Damage The Power Macintosh G3 Desktop offers DVD-ROM drives as a build-to-order option. It is important to note that DVD disks are much more prone to damage than CD-ROM disks. Any type of scratch or other abuse may result in a disk that is unreadable.
Hot Issues HFS+ Formatted Drives - 1 0 HFS+ Formatted Drives Hard drives that ship with the Version 2 Power Macintosh G3 logic board (part number 661-2063) use a file format called Mac OS Extended format, also referred to as HFS+. Norton Utilities version 3.
Hot Issues Power-On Issue - 11 Power-On Issue If you experience a power-on issue with the Power Macintosh G3 Desktop where the power supply fan is spinning, but there is no boot tone, no hard drive noise, no power LED, and no video, you may have an improperly installed or faulty voltage regulator.
Service Source K Basics Po wer Macintosh G3 Desktop.
Basics Overview - 1 Overview The Power Macintosh G3 desktop chassis design allows you to access the logic board and its components, including the removable processor, without having to remove the power supply or any drives. This flexible design makes this computer easy to service and upgrade.
Basics Overview - 2 Features of the P o wer Mac G3 Desktop inc lude: • PowerPC G3 microprocessor running at 233 MHz, 266 MHz, or 300 MHz • RAM expandable to 384 MB i n 3 DIMM card slots using 64-bit 168-pin JEDEC-standard 3.
Basics Overview - 3 • Three expansion bays for adding internal 3.5-inch SCSI devices • Optional 100 MB SCSI Iomega or ATAPI Zip drive in one of the expansion bays • CD-ROM ATAPI drive at 24X speed (unless customer orders DVD-ROM drive) • 1.
Basics Overview - 4 • 2 MB video RAM expandable to 4 MB or 6 MB with 3.3 V, 83 MHz or faster SGRAM on a 144-pin small outline dual inline memory module (SO-DIMM) Optional Build-to-Or der P o wer Mac G3 Desktop Features: • ATAPI or SCSI Zip drive • Ultra Wide SCSI PCI card • 4 GB or 9 GB Ultra Wide 3.
Basics Data Buses - 5 Data Buses The data buses on the Power Macintosh G3 Desktop include: • Narrow SCSI-1: The SCSI-1 chain transfers data at up to 5 MB per second. The narrow SCSI-1 chain supports up to seven internal and external SCSI devices. The Narrow SCSI-1 bus is used to connect the ZIP drive (if present) and any SCSI-1 hard drives.
Basics Data Buses - 6 Note: Some Power Mac G3 system use a Master/Slave interface. See “Support for Master and Slave” later in this section for more information. The following table gives more information about the data buses in the Power Macintosh G3 Desktop computer.
Basics Data Buses - 7 T able 1: Internal Buses on G3 Desktop Interface Connector T ype Notes Max # of Drives Max Data T ransfer Rate SCSI-3 1 (Ultra W ide) 68-Pin Requires Ultra W ide SCSI PCI card. 2 2 40 MB per second EIDE 40-Pin There are two EIDE connectors on the logic board.
Basics Data Buses - 8 Notes f or T able 1: 1 The Ultra Wide SCSI PCI card is optional on the G3 Desktop unit. The Apple Ultra Wide SCSI card and cable allow you to connect a maximum of 2 devices to this bus. 2 Physical space inside the computer limits this number to 2.
Basics Data Buses - 9 Narr ow SCSI-1 Bus All internal and external devices on the SCSI-1 chain must have unique ID numbers. SCSI ID numbers 0 through 6 are available.
Basics Data Buses - 1 0 Impor tant : Detailed information on how to route and tape the Ultra Wide SCSI cable can be found in the Take-Apart chapter in the Hard Drive topic. All devices on the same SCSI bus must have unique ID numbers, but devices on different SCSI buses may use the same SCSI ID number.
Basics Data Buses - 1 1 T able 2: Assigning Ultra W ide SCSI ID Numbers Ultra Wide SCSI ID # Device 0 Factory-installed hard drive (terminated) 1 Factory-installed hard drive (optional) 2 — 6 Availa.
Basics Data Buses - 1 2 EIDE Bus The internal EIDE bus supports the internal CD-ROM or DVD-ROM drive. You can connect another EIDE device, such as an EIDE hard drive, to the second channel of the EIDE bus. (Note that in the standard G3 Desktop configuration, there is already an ATA hard drive attached to the second EIDE channel.
Basics Data Buses - 1 3 devices to the EIDE bus. If you are connecting a single device to the EIDE bus, you should use the J9 connector (the one closer to the rear panel). If you plug a single device into the J10 EIDE connector and leave J9 empty, the device may not boot.
Basics Data Buses - 1 4 hard drives or removal media devices to their system. The Power Macintosh G3 Desktop units that support this feature can only be identified by looking at the logic board itself and verifying the revision of the built-in video ASIC made by ATI Technologies.
Basics Data Buses - 1 5 Configuring or Connecting Master/Sla ve De vices Each IDE channel can support either one or two devices. All Power Macintosh G3's have two ATA/IDe channels.
Basics Data Buses - 1 6 Devices are designated as master or slave using jumpers, small connectors that fit over pairs of pins to program the drive through hardware. Each hard drive manufacturer uses a different combination of jumpers (usually named differently) for specifying whether its drive is master or slave on the channel.
Basics Data Buses - 1 7 drives the master, or both the slave will likely result in a very confused system. Note : It makes no difference which connector on the ATA/ IDE cable is used in a standard ATA/IDE setup, because it is the jumpers that control master and slave, not the cable.
Basics Ultra Wide SCSI Card - 1 8 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 661-2011). If present, this card is installed in the first PCI slot on the logic board.
Basics Ultra Wide SCSI Card - 1 9 second Ultra Wide SCSI card. To install a second Ultra Wide SCSI card, follow these guidelines: • Use a single-channel card if possible. • If you need to add a dual-channel Ultra Wide SCSI card, contact the PCI card vendor to verify compatibility with the Power Macintosh G3 Desktop.
Basics Ultra Wide SCSI Card - 2 0 • Embedded RISC I/P processor • Ultra SCSI connector: Fine pitch 68-pin “P” • Flash ROM BIOS • PCI 2.1 compliant • Large command FIFO • Supports disconnect/reconnect • Asynchronous I/O support • Multiple initiator support • SCSI-3 tagged command queuing • SCSI Manager 4.
Basics Ultra Wide SCSI Card - 2 1 • SCSI interface: SCSI-1, SCSI-2, SCSI-3, Ultra SCSI • Electrical signals: Single-ended versions • Extensive device support: Up to 105 Through Logical Unit Numb.
Basics Ultra Wide SCSI Card - 2 2 lengths as short as possible to ensure high signal quality and performance. If you connect a combination of Wide 16-bit devices and Narrow 8-bit devices on the same connector (not recommended), Wide devices must be connected first (closest to the connector), followed by the Narrow devices.
Basics 10/100 BaseT Ethernet Card - 2 3 10/100 BaseT Ethernet Card The specifications for the 10/100 BaseT ethernet card, which is an optional feature in the G3 Desktop, are as follows: • Open Transport: Mac OS 8.
Basics 10/100 BaseT Ethernet Card - 2 4 • Controllers: DECchip 21140, 32-bit internal processor per channel.
Basics DVD-ROM Drive Technology - 2 5 DVD-ROM Drive Technology DVD stands for Digital Versatile Disc, an audio/video/data standard based on high-density next-generation optical discs. Apple Computer offers a DVD-ROM drive through the build-to-order (BTO) program which is capable of playing DVD-ROM disks.
Basics DVD-ROM Drive Technology - 2 6 DVD discs can hold nearly 26 times the amount of data that can be stored on a conventional CD. This capacity virtually eliminates the need to swap discs in the middle of a game or application and at the same time reduces the cost and the number of discs necessary to hold the data.
Basics DVD-ROM Drive Technology - 2 7 T able 3: Storage Capacities Disc T ype Diameter Sides & Layers Capacity Playback T ime (video) CD-R OM 120mm SS 650 MB Max 74 min audio D VD-5 120mm SS/SL 4.7 GB Over 2 hours of video D VD-9 120mm SS/DL 8.5 GB Approx.
Basics DVD-ROM Drive Technology - 2 8 To squeeze all this information onto the CD-sized disc, DVD disc designers: 1)made track spacing and the pits and lands used to record data nearly half the size o.
Basics DVD-ROM Drive Technology - 2 9 D VD La y ers.
Basics DVD-ROM Drive Technology - 3 0 Compared to CD, DVD uses smaller pits and a more closely spaced track.The result is a significant increase in data density. The higher Numerical Aperture (NA) lens of DVD helps the laser focus on the smaller pits.
Basics DVD-ROM Drive Technology - 3 1 T able 4: CD vs. D VD Comparison CD D VD Disc Diameter 120mm 120mm Disc Thickness 1.2mm 1.2mm Disc Structure Single substrate T wo bonded 0.6mm substrates Laser W av elength 780nm (infrared) 650 and 635nm (red) Numerical Aperature 0.
Basics DVD-ROM Drive Technology - 3 2 Data Layers 1 1 or 2 Data Capacity Approx. 680 MB Single Layer: 4.7 GBx2 Dual Layer: 8.5 GBx2 Data T ransfer Rate Mode 1: 153.
Basics DVD-ROM Drive Technology - 3 3 A pple D VD-R OM Drive Specs The Apple DVD-ROM Drive is an ATAPI drive. It uses an IDE port on the Macintosh for connection to the computer. Below are some of the specs for the drive. Note that the above transfer rate info varies from the data below.
Basics DVD-ROM Drive Technology - 3 4 T ransfer Rate DVD: 2,705 KB/second CD Mode 1: 1,293 to 3,000 KB/second CD Mode 2: 1,474 to 3,429 KB/second Disk F ormat Support DVD 9660 Bridge (DVD-ROM Book, DV.
Basics DVD-ROM Drive Technology - 3 5 you will need to purchase a PCI decoder card. D VD Softwar e Driv ers Apple D VD-R OM UDF V olume Access These two extensions will allow a DVD disk to be mounted on the desktop. DVD disks use a format called universal disk format (UDF) to store data on the disks.
Basics DVD-ROM Drive Technology - 3 6 File Management System Micr o UDF & ISO9660 Universal Disk Format (UDF) is a file system standard that supports both rewritable and write-once media. It is a cross-platform data format that allows transparent interchange of data via optical discs or CD-ROMs.
Basics DVD-ROM Drive Technology - 3 7 supported either software or hardware updates to allow the drive to be upgraded so that it could write UDF. The first generation of DVD drives could not read CD-R media and in some cases actually damaged the media.
Basics DVD-ROM Drive Technology - 3 8 Stand-alone players use UDF while computer applications use the UDF bridge format, which consists of both ISO-9660 CD-ROM format and UDF.
Basics FireWire Technology - 3 9 FireWire 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.
Basics FireWire Technology - 4 0 • A physically small thin serial cable - replaces today's bulky and expensive interfaces • Easy to use - no need for terminators, device IDs, screws, or compl.
Basics FireWire Technology - 4 1 FireWire technology speeds up the movement of multimedia data and large files and enables the connection of digital consumer products -- including digital camcorders, digital video tapes, digital video disks, set-top boxes, and music systems -- directly to a personal computer.
Basics FireWire Technology - 4 2 Isochronous data transfer provides guaranteed data transport at a pre-determined rate. This is especially important for multimedia applications where uninterrupted transport of time-critical data and just-in-time delivery reduce the need for costly buffering.
Basics FireWire Technology - 4 3 buffers to capture digital video. FireWire will gradually improve upon existing interfaces such as SCSI. FireWire provides higher speed, lower cost, and is more user friendly than most existing interfaces.
Basics FireWire Technology - 4 4 card is Apple Computer’s first implementation of FireWire technology. This card is designed to work with digital video camcorders and decks that use the DV format and have a FireWire port (sometimes marked IEEE 1394 or DV IN/ OUT).
Basics FireWire Technology - 4 5 200 Mbps and supports a single digital video camera. The external FireWire cable, which ships with the card, connects any one of the 6-pin, external connectors on the card to a 4-pin connector on the digital video camera.
Basics FireWire Technology - 4 6 Connecting the Fir eW ir e D VC Card The 6-pin connector on the external FireWire cable plugs into the card and the 4-pin connector plugs into the camera’s DV port. Both connectors snap into place when properly engaged.
Basics FireWire Technology - 4 7 Installing the Fir eW ir e Card Softwar e To install the Apple FireWire Card software: 1 Insert the FireWire CD. 2 Double-click the Installer icon.
Basics The Cuda Chip - 4 8 The Cuda Chip The Cuda is a microcontroller chip. Its function is to • Turn system power on and off • Manage system resets from various commands • Maintain parameter R.
Basics Resetting the Logic Board - 4 9 Resetting the Logic Board Resetting the logic board can resolve many system problems (refer to “Symptom Charts” for examples). Whenever you have a unit that fails to power up, you should follow this procedure before replacing any modules.
Basics Resetting the Logic Board - 5 0 6 Reassemble the computer and test the unit. Note: This procedure resets the computer’s PRAM. Be sure to check the computer’s time/date and other system parameter settings afterwards.
Basics Sound - 5 1 Sound The sound system for the Power Macintosh G3 computers is implemented entirely on the I/O cards. (There are two versions available.
Basics Sound - 5 2 The Power Macintosh G3 also records sound from several sources: • A microphone connected to the line-level sound input jack • A compact disc in the CD-ROM player • Analog soun.
Basics Sound - 5 3 Sound Output All sound output features for the Power Macintosh G3 computer are provided by an I/O card. The Audio I/O card (standard feature) provides one mini jack for sound output on the back of the enclosure.
Basics Sound - 5 4 Sound Input The I/O card provides a stereo sound input jack on the back of the enclosure for connecting an external Apple PlainTalk line-level microphone or other sound source pair of line- level signals. The sound input jack accepts a standard 1/8- inch stereophonic phone plug (two signals plus ground).
Basics Sound - 5 5 • Sound playback—computer-generated sound is sent to the speaker and the sound output jacks. • Sound playback with playthrough—computer sound and sound input are mixed and sent to the speakers and sound output jacks.
Basics Video Input and Output - 5 6 Video Input and Output The AV I/O card (an optional build-to-order feature) supports video input and output of composite and S-video signals. The card supports input and output of NTSC, PAL, and SECAM video formats.
Basics Video Input and Output - 5 7 The card can accept video input from an external device, such as a VCR or camcorder. A V I/O Panel Au d io Outp ut Po rts (left & right) Audio Input Ports (left.
Basics The DAV Connector - 5 8 The DAV Connector The AV I/O Personality card has a digital audio video (DAV) connector. The DAV connector allows a PCI expansion card to access the AV I/O card video input data bus and associated control signals.
Basics Voltage Switch - 5 9 Voltage Switch The voltage switch must be set correctly to avoid damaging the computer. Insert a screw driver in the slot to set the switch to show “115” for voltages between 100 and 130. Set the switch to show “230” for voltages between 200 and 270.
Basics Voltage Switch - 6 0 Here is a table listing voltages for some countries: Country V oltage Japan 1 0 0 South Korea 100 or 220 Jamaica, Taiwan 1 10 Peru 110 or 220 Brazil, Lebanon 110–220 Phil.
Basics Voltage Switch - 6 1 India, South Africa 220–250 Israel, Pakistan, Singapore 230 Australia, Kuwait, Malta, New Zealand, Northern Ireland, Papua New Guinea, Oman, Qatar, United Kingdom 240 Aus.
Basics PowerPC G3 and Backside Cache - 6 2 PowerPC G3 and Backside Cache Backside cache is a significant architectural design change from earlier PowerPC processors. The main advantage of the backside cache architecture is the speed of the dedicated CPU-to-L2 cache interface.
Basics SDRAM DIMMs - 63 PowerPC G3, and a 2.5 L2 bus ratio, the backside cache bus speed will be 100MHz, twice the speed of the system bus. SDRAM DIMMs Three DRAM expansion slots on the logic board accept 3.3 V SDRAM unbuffered 8-byte DIMMs. The 168-pin DIMM has a 64-bit-wide data bus per bank.
Basics SDRAM DIMMs - 64 profile DRAM DIMMs must be used to reach the maximum DRAM expansion of 384 MB. Using higher-profile DRAM DIMMs, the maximum DRAM expansion for the Power Mac G3 Desktop is 192 MB. The DRAM DIMMs can be installed one or more at a time.
Basics SGRAM Video Memory - 6 5 SGRAM Video Memory The Power Macintosh G3 logic board comes with 2 MB of Synchronous Graphic RAM (SGRAM) video memory soldered on. The logic board also contains a video memory expansion slot that accepts a Small Outline DIMM (SO-DIMM) to increase video memory up to a maximum of 6 MB.
Basics DIMM Slots - 66 DIMM Slots ROM Slot (Do not remove the ROM DIMM.) DRAM DIMM Slots Video Memory Slot.
Basics Peripheral Component Interconnect (PCI) - 67 Peripheral Component Interconnect (PCI) The Peripheral Component Interconnect (PCI) expansion slots accept 6.88-inch and 12.283-inch PCI cards. Because the PCI bus is an industry standard, most existing PCI 2.
Basics Front View - 6 8 Front View CD-ROM Drive Internal Hard Drive Speaker Floppy Disk Drive Power-On Light Power Button CD-ROM Drive Open/Close Button Expansion Bay Zip Drive (Optional).
Basics Rear View - 6 9 Rear View Monitor Power Socket SCSI Port ADB Port Monitor Port Internal Modem Card (Optional) Power Socket Security Lock Ports External Modem Port Printer Port Ethernet Port (10.
Basics Internal Locator - 7 0 Internal Locator CD-ROM Drive Floppy Drive Hard Drive Zip Drive Logic Board Sound Card Power Supply.
Basics Logic Board - 7 1 Logic Board PCI Slots Battery ROM DIMM PERCH Slot Internal SCSI Connector Speaker CD Audio Floppy Drive Connector Power Supply Connector Voltage Regulator LED SCSI Port ADB Po.
Basics Repair Strategy - 7 2 Repair Strategy Service the Power Macintosh G3 Desktop computers through module exchange and parts replacement. Customers can request on-site service from an Apple Authorized Service Provider Plus (AASP+) Apple Assurance (US only), or Apple Canada Technical Answerline (Canada only).
Basics Repair Strategy - 7 3 Large businesses, universities, and K-12 accounts must provide a purchase order on all transactions, including orders placed through the AppleOrder (US only) or ARIS (Canada only) system.
Basics Repair Strategy - 7 4 Canadian Ordering Canadian Service providers not enrolled in ARIS may fax their orders to Service Provider Support in Canada (1-800-903-5284). For Canadian inquiries, please call Service Provider Support at 905-513-5782 and select option #3.
Basics Warranty/AppleCare/ARIS - 75 Warranty/AppleCare/ARIS US Only The Power Macintosh G3 computers are covered under the Apple One-Year Limited Warranty. The AppleCare Service Plan is also available for these products. Service Providers are reimbursed for warranty and AppleCare repairs made to these computers.
http:// www .appl e .co m A little background T wo decades ago , Apple made its name by bringing advanced technology to mainstream users through extraordinarily easy -to-use products. In particular , we gained a reputation for success in pioneering the educational use of computers and championing the advance- ment of multimedia technology .
In addition, the logic board design of the P ower Macintosh G3 systems exhibits the following characteristics in these vital areas: Processor . These computers use the innovative, next-generation PowerPC G3 processor , which was designed specifically to provide increased power at affordable cost.
ht tp:// www . apple .com Th e P o w e r PC G3 P ro ces sor: T a k i n g t he Mac i nt o sh to the Ne x t L e v e l A little background Nearly six years ago , Apple, IBM, and Motorola joined forces to.
Level 2 backside cache. By far the biggest boost to perfor mance that the PowerPC G3 offers can be credited to its incorporation of an approach to level 2 cache memory known as backside cache. This approach effectively bypasses limitations on the speed at which transac- tions between the processor and the level 2 cache can occur .
Service Source K Specifications Po wer Macintosh G3 Desktop.
Specifications Introduction - 1 Introduction Specifications information for this product can be found in the Spec Database, which you can access at Service Source Online (http://service.
Service Source K T ak e Apart Po wer Macintosh G3 Desktop.
Take Apart Top Housing - 1 Top Housing No preliminary steps are required before you begin this procedure. Note: The top housing covers the top, front, and left and right sides of the computer.
Take Apart Top Housing - 2 1 Press the two tabs at the front corners of the top housing to release the top housing from the bottom chassis. Left Tab Right Tab.
Take Apart Top Housing - 3 2 Pull the top housing forward about 1 to 2 inches and lift straight up to remove the top housing from the computer..
Take Apart Bezels - 4 Bezels Before you begin, remove the top housing. Note: As you face the computer, the bezels are in the middle of the top housing’s front panel. Depending on the unit, you may either see a blank bezel or a Zip drive bezel in the middle of the front panel, and you may have either a CD-ROM or a DVD-ROM bezel.
Take Apart Bezels - 5 1 From the underside of the top housing, pull out on the moon-shaped opening at the bottom of the bezel to release the tab. Lift up the bezel to remove it from the top housing.
Take Apart Chassis Latch - 6 Chassis Latch Before you begin, remove the top housing. Note: The chassis latches mount in the internal chassis and secure the internal chassis to the external chassis frame.
Take Apart Chassis Latch - 7 1 Use a screwdriver to push out the tab indicated in the illustration. Slide the latch forward and lift it from the chassis.
Take Apart CD-ROM or DVD-ROM Drive - 8 CD-ROM or DVD-ROM Drive Before you begin: • Remove top housing • Remove CD-ROM or DVD- ROM EMI shield Note: Special cable routing instructions for Master/ Slave IDE configurations can be found at the end of this section.
Take Apart CD-ROM or DVD-ROM Drive - 9 1 Disconnect the SCSI data cable, power cable, and CD audio cable from the back of the CD-ROM or DVD-ROM drive..
Take Apart CD-ROM or DVD-ROM Drive - 10 2 Pull up the release tab and slide the CD-ROM or DVD-ROM forward to remove it from the internal chassis. Note: Be sure to remove the CD-ROM or DVD-ROM drive from its carrier before returning the drive to Apple.
Take Apart CD-ROM or DVD-ROM Drive - 11 Replacement Note: When replacing the CD-ROM drive, you must install two or more poron bumpers (p/n 922- 3554) at the rear of the CD-ROM carrier (i.e., where the carrier meets the metal chassis tabs when installed).
Take Apart CD-ROM or DVD-ROM Drive - 12 The following graphic shows the installation instructions..
Take Apart CD-ROM or DVD-ROM Drive - 13 Master/Sla v e Cable Routing Some G3 Desktop logic boards support master and slave IDE configurations, allowing you to connect two devices to a single IDE channel. These boards ship with a special split IDE cable that also supports master and slave configurations.
Take Apart CD-ROM or DVD-ROM Drive - 14 The graphic at left shows how the split master/slave IDE cable connects to the logic board. The same connector is used for both the regular IDE and the master/slave IDE cables.
Take Apart Zip Drive - 1 5 Zip Drive Before you begin: • Remove top housing • Remove Zip and CD/DVD EMI shield Note: Special cable routing instructions for Master/ Slave IDE configurations can be found at the end of this section.
Take Apart Zip Drive - 1 6 1 Disconnect the cable from the back of the Zip drive. Caution: The power cable connector is a keyed connector. If it is removed with too much force, the keyed latch can break. With a broken latch, the connector can be installed incorrectly and cause the drive to fail.
Take Apart Zip Drive - 1 7 2 Push up on the tab underneath the zip drive and slide the zip drive out of the chassis..
Take Apart Zip Drive - 1 8 Master/Sla v e Cable Routing Some G3 Desktop logic boards support master and slave IDE configurations, allowing you to connect two devices to a single IDE channel. These boards ship with a special split IDE cable that also supports master and slave configurations.
Take Apart Zip Drive - 1 9 The graphic at left shows how the split master/slave IDE cable connects to the logic board. The same connector is used for both the regular IDE and the master/slave IDE cables.
Take Apart Floppy Drive - 20 Floppy Drive Before you begin, remove the top housing. Note: As you face the computer, the floppy drive is in the top right drive bay.
Take Apart Floppy Drive - 21 1 Remove the blank shield and the floppy drive shield from the front of the unit..
Take Apart Floppy Drive - 22 2 Flip open the chassis support foot..
Take Apart Floppy Drive - 23 3 Disconnect the floppy drive cable from the back of the floppy drive. Floppy Drive Cable Floppy Drive.
Take Apart Floppy Drive - 24 4 Pull out on the plastic drive rails that secure the floppy drive to the drive chassis and push back the drive to release it.
Take Apart Floppy Drive - 2 5 Replacement Note: If you are replacing the floppy drive, remove the EMI gasket from the defective drive and attach the gasket in the center of the replace- ment drive’s top surface, with the “V” of the gasket pointing at the front edge of the drive.
Take Apart Drive Chassis - 26 Drive Chassis Before you begin, remove the top housing..
Take Apart Drive Chassis - 27 1 Push in on the two tabs securing the drive bracket to the internal chassis and slide the drive bracket out to remove it.
Take Apart Open/Remove Card Retainer Baffle - 2 8 Open/Remove Card Retainer Baffle Before you begin, remove the top housing..
Take Apart Open/Remove Card Retainer Baffle - 2 9 T o Open the Card Retainer Baffle: 1 With one hand lift up on the baffle while, with the other hand, pushing in on the tab that secures the baffle to the internal chassis. This procedure opens the card retainer baffle.
Take Apart Open/Remove Card Retainer Baffle - 3 0 T o Remove the Car d Retainer Baffle: 2 With the baffle slightly raised, push in on the top tab to release it from the chassis frame and then pull the baffle out and away from the chassis to free the bottom tab.
Take Apart Open Internal Chassis - 3 1 Open Internal Chassis Before you begin, open the card retainer baffle. 1 Release the chassis latches..
Take Apart Open Internal Chassis - 3 2 2 Flip out the chassis support foot..
Take Apart Open Internal Chassis - 3 3 3 Swing open the internal chassis that contains the power supply. Be sure the internal chassis is perpendicular to the bottom chassis and fully supported by the chassis support foot.
Take Apart Open Internal Chassis - 3 4 4 To secure the internal chassis in the up position, flip down the chassis support arm. Make sure the tab on the bottom of the support arm is securely fastened in the hole provided in the bottom chassis.
Take Apart Hard Drive - 35 Hard Drive Before you begin, do the following: • Remove top housing • Open Card Retainer Baffle • Open internal chassis Note: The hard drive is in the bottom of the chassis, in front of the logic board.
Take Apart Hard Drive - 36 1 Disconnect the cables from the hard drive..
Take Apart Hard Drive - 37 2 Pull up the release tab at the front of the hard drive and push the back of the hard drive to remove it from the drive chassis. Note: For information on removing the hard drive from its carrier and returning drives, cables, and carriers to Apple, refer to Additional Procedures in the Hard Drives manual.
Take Apart Drive Rails - 38 Drive Rails Before you begin, do the following: • Remove top housing • Remove CD-ROM or DVD- ROM drive • Remove Zip drive • Open Card Retainer Baffle • Open internal chassis • Remove hard drive Note: The drive rails attach to the chassis underneath the CD-ROM or DVD-ROM drive, Zip drive, and hard drive.
Take Apart Drive Rails - 39 1 Use a screwdriver to push out the tab indicated in the illustration. 2 Slide the drive rail either forward or backward (depending on which way the tabs are facing) and lift it from the chassis.
Take Apart Power Supply - 40 Power Supply Before you begin • Remove top housing • Open Card Retainer Baffle • Open internal chassis Note: As you face the computer, the power supply is in the back right corner.
Take Apart Power Supply - 41 1 Disconnect the power supply cable from the CD-ROM or DVD-ROM drive. 2 Open the internal chassis..
Take Apart Power Supply - 42 3 Disconnect the power supply cable from the hard drive and the logic board..
Take Apart Power Supply - 43 4 From the back of the computer, remove the two screws that secure the power supply to the chassis. Screw Screw.
Take Apart Power Supply - 44 5 Release the chassis support arm and swing down the internal chassis. Chassis Support Arm Tab.
Take Apart Power Supply - 45 6 Remove the screw that secures the power supply to the bottom of the internal chassis.
Take Apart Power Supply - 46 7 Slide the power supply forward and pull it out of the computer. You will need to feed the power supply cables that connect to the logic board up through the hole in the chassis. IMPOR T ANT : Make sure the switch on the back of the power supply is set to the correct voltage (115V in the U.
Take Apart Power Supply - 47 switch is accessible through the computer’s rear panel when the power supply is installed. Replacement Note: There are two metal tabs on the back of the metal chassis and one metal tab on the bottom of the chassis that lock into the power supply.
Take Apart Speaker - 4 8 Speaker Before you begin, remove the top housing. Note: As y ou f ace the computer, the speaker is in the front left corner of the bottom chassis.
Take Apart Speaker - 4 9 2 Remove the two Torx screws that secure the speaker to the metal chassis. Screw Screw.
Take Apart Speaker - 5 0 3 Disconnect the speaker cable from the logic board. 4 Press the latch holding the speaker to the chassis and lift the speaker out of the computer.
Take Apart Power Actuator - 5 1 Power Actuator Before you begin, remove the top housing. Note: As y ou f ace the computer, the power actuator is in the front left corner of the bottom chassis (directly beneath the speaker).
Take Apart Power Actuator - 5 2 1 Push in the tab that secures the power actuator to the chassis and push the power actuator out of the computer. Power Actuator Tab.
Take Apart Processor Module - 5 3 Processor Module Before you begin, do the following: • Remove top housing • Open Card Retainer Baffle • Open internal chassis.
Take Apart Processor Module - 5 4 1 Remove the screw that holds the processor module wire to the logic board. Replacement Note: The processor module wire attaches to the top of the logic board (not underneath). When screwing down the wire, be careful not to damage the capacitor that is next to the screw hole.
Take Apart Processor Module - 5 5 W arning: The heat sink may be hot to the touch. 2 While pressing down on the top of the clip that secures the heatsink, use a small flatblade screwdriver to lift up on the front tab of the clip to release it.
Take Apart Processor Module - 5 6 3 Lift up the clip and remove it from heatsink..
Take Apart Processor Module - 5 7 4 Lift up the heatsink to remove it from the processor module..
Take Apart Processor Module - 5 8 5 Lift the metal lever at the left of the processor module..
Take Apart Processor Module - 5 9 6 Pick up the processor module by the edges and gently lift straight up to remove it. Be careful not to bend the pins under- neath the module.
Take Apart Processor Module - 6 0 7 Remove the warranty sticker and red jumper block located next to the battery if replacing the logic board only. IMPOR T ANT : When replacing the processor module, you must change the processor jumper block and warranty sticker to be compatible with the proces- sor module you are install- ing.
Take Apart Processor Module - 6 1 8 Install the jumper as shown. Depending on the computer’s processor speed, you will install a red jumper (233 MHz), a white jumper (266 MHz), or a black jumper (300 MHz). Be sure to cover the pins as shown and to install the jumper block with the gold connector pins facing down towards the board.
Take Apart Processor Module - 6 2 module to install it. Never force the module or you may damage the gold connector pins on the underside. Flip down the metal lever that secures the module.
Take Apart Battery - 6 3 Battery Before you begin, do the following: • Remove top housing • Open Card Retainer Baffle • Open internal chassis Note: As you face the computer, the battery is near the front left corner of the logic board.
Take Apart Battery - 6 4 1 Use a screwdriver to gently pry up one side of the battery cover..
Take Apart Battery - 6 5 2 Lift up the battery to remove it from the logic board..
Take Apart PCI Cards - 6 6 PCI Cards Before you begin, do the following: • Remove top housing • Open Card Retainer Baffle • Open internal chassis Note: PCI expansion cards, if present, install perpendic-ularly to the logic board (and directly behind the I/O audio card) in one of three PCI slots.
Take Apart PCI Cards - 6 7 1 Remove the screw that secures the PCI card to the back of the chassis..
Take Apart PCI Cards - 6 8 2 Grab the corners of the PCI card and pull up the card to remove it..
Take Apart Ultra Wide SCSI PCI Card - 6 9 Ultra Wide SCSI PCI Card The ultra wide SCSI card installs like any other PCI card (see the PCI Cards take-apart topic for more information); however, the ultra wide SCSI card must be installed in the first PCI slot (that is, the PCI slot nearest the video card).
Take Apart Ultra Wide SCSI PCI Card - 7 0 1 Attach the end of the ultra wide SCSI cable that has just one connector to the ultra wide SCSI PCI card. 2 Route the cable along the back edge of the chassis and away from the logic board.
Take Apart Ultra Wide SCSI PCI Card - 7 1 3 Feed the ultra wide SCSI cable through the first cut out in the drive chassis..
Take Apart Ultra Wide SCSI PCI Card - 7 2 4 Attach the very end of the cable that has two connectors to the upper (maybe only) ultra wide hard drive. If a second ultra wide hard drive is installed in the lower bay, connect the second to last ultra wide SCSI cable connector to this lower drive.
Take Apart Ultra Wide SCSI PCI Card - 7 3 5 Route the ultra wide SCSI cable on top of the 50-pin SCSI cable and tape them both to the power supply. The ultra wide SCSI cable must be away from the CD-ROM drive, and the floppy cable should be routed on top of the other cables.
Take Apart Ultra Wide SCSI PCI Card - 7 4 Note: You must order leaf gaskets to install on the ultra wide hard drive whenever you replace this module. 6 If the ultra wide hard drive is installed in the.
Take Apart FireWire PCI Card - 75 FireWire PCI Card Before you begin, do the following: • Remove top housing • Open Card Retainer Baffle • Open internal chassis Note: The FireWire card comes from the factory installed in the middle PCI slot.
Take Apart FireWire PCI Card - 76 1 Disconnect the internal FireWire cable from the card. 2 Using a Phillips screwdriver, remove the screw securing the FireWire card to the rear panel and gently lift up on the card to remove it.
Take Apart FireWire PCI Card - 77 Replacement Note : The following steps explain how to route and reconnect the FireWire cable. 3 After connecting the internal FireWire cable to the card, route the cable along the edge of the logic board. Tuck the cable underneath the corner of the logic board to keep it out of the way.
Take Apart FireWire PCI Card - 78 5 Run the FireWire cable up to meet the drives. Then, connect the very end of the FireWire cable to the power supply cable. 6 Connect the second to last connector on the FireWire cable to the back of the CD-ROM or DVD-ROM drive.
Take Apart FireWire PCI Card - 79 Note: The graphic at left shows the internal FireWire cable and each of its connectors..
Take Apart I/O Card - 8 0 I/O Card Before you begin, do the following: • Remove top housing • Open internal chassis Note: The I/O card installs perpendicularly to the logic board. It’s located under the expansion card cover next to the PCI expansion slots.
Take Apart I/O Card - 8 1 2 Remove the two screws that secure the I/O card to the metal chassis. 3 Grab the corners of the I/O card and pull up the card to remove it.
Take Apart Logic Board - 8 2 Logic Board Before you begin, do the following: • Remove top housing • Open Card Retainer Baffle • Open internal chassis • Remove PCI cards (if present) • Remove.
Take Apart Logic Board - 8 3 1 Swing open the expansion card cover to provide access to the logic board. 2 Disconnect all cables from the logic board. 3 Remove the screw inside the top column support that secures the logic board to the chassis.
Take Apart Logic Board - 8 4 4 Remove the screw that attaches the processor module wire to the logic board. Replacement Note: The processor module wire attaches to the top of the logic board ( not underneath). Be careful not to damage the nearby capacitor when screwing down the processor wire.
Take Apart Logic Board - 8 5 5 Press down on the two tabs at the front of the logic board and slide the board forward (away from the rear panel) to release it from the tabs. Lift the logic board from the chassis to remove it. IMPOR T ANT : There is a power supply jumper on the logic board at J28 (near the PCI slots).
Take Apart Logic Board - 8 6 Desktop model, this jumper must cover the pins marked “Mac”. Failure to install this jumper correctly will result in a computer that will not boot up. Note: Replacement logic boards come with the J28 jumper pre-installed in the PM G3 Desktop configuration; that is, the jumper comes installed on the “Mac” pins.
Take Apart Logic Board - 8 7 replacement logic board. This sticker must be in place to protect the customer’s product warranty. IMPOR T ANT : If you are replacing the logic board and the new logic board does not come with a voltage regulator, you must transfer the voltage regulator from the old logic board to the new board.
Take Apart Logic Board - 8 8 The graphic at left shows how the split master/slave IDE cable connects to the logic board. The same connector is used for both the regular IDE cable and the master/slave IDE cable that connect to the CD-ROM and Zip drives, depending on which one comes with the unit.
Take Apart Rear Panel - 89 Rear Panel Before you begin, do the following: • Remove top housing • Open Card Retainer Baffle • Open internal chassis • Remove I/O card • Remove PCI cards (if pr.
Take Apart Rear Panel - 90 1 Lift the rear panel straight up to unhook it from the metal chassis. Once the rear panel is unhooked, you can remove it from the computer.
Take Apart Rear Panel - 91 from the chassis, however, just slide it forward about an inch. Once you have the rear panel in place, slide the logic board back toward the rear panel until the board locks into place. Be sure the logic board connectors are lined up properly with the openings in the rear panel.
Take Apart Bottom Chassis - 9 2 Bottom Chassis Before you begin, do the following: • Remove the top housing • Open Card Retainer Baffle • Remove PCI cards if present • Remove I/O card • Remo.
Take Apart Bottom Chassis - 9 3 Note: The bottom chassis is what is left once all other modules have been removed..
Take Apart Modem Card - 9 4 Modem Card Before you begin, do the following: • Remove the top housing • Open the internal chassis • Remove the I/O Card.
Take Apart Modem Card - 9 5 1 Lay the I/O card on a flat surface and gently lift up on the modem card to remove it. Replacement Note: Align the modem card evenly over the modem slot on the I/O card and press down gently to install the card. Do not force the modem card into the slot.
Service Source K Upgrades Po wer Macintosh G3 Desktop.
Upgrades PCI or I/O Cards - 1 PCI or I/O Cards Before you begin, remove the top housing. 1 Open the expansion card cover. Expansion Card Cover.
Upgrades PCI or I/O Cards - 2 2 Remove the screw that holds the port access cover in place. 3 Pull out the access cover. Note: If you remove all three port access covers, be sure the sheet metal shield remains under the edge of the logic board.
Upgrades PCI or I/O Cards - 3 4 Align the card connector with the expansion slot and press straight down until the connector inserts all the way into the slot. Note: It may be helpful to hold the card slightly away from the port access opening until the card fits into the slot.
Upgrades PCI or I/O Cards - 4 5 If you meet resistance, pull the card out and try again. 6 To test the connection, pull the card up gently. The card should remain firmly in place.
Upgrades PCI or I/O Cards - 5 8 Close the expansion card cover. Expansion Card Cover.
Upgrades Memory—DRAM or VRAM - 6 Memory—DRAM or VRAM Open Chassis Before you begin, remove the top housing. 1 To unlock the chassis, move the release switches toward the inside of the computer. 2 Tip the support foot out until it snaps into the locked position.
Upgrades Memory—DRAM or VRAM - 7 3 Lift up on the tab to open the chassis. Tab.
Upgrades Memory—DRAM or VRAM - 8 4 Swing the chassis up and insert the support arm in the hole. Support Arm Hole in Chassis Floor.
Upgrades Memory—DRAM or VRAM - 9 DRAM Note: DIMM shape and components may vary. 1 To remove existing DRAM DIMMs to make room for new ones, push down on the ejectors.
Upgrades Memory—DRAM or VRAM - 1 0 2 Align DIMM notches with DRAM slot ribs. Note: The DIMM is designed to fit in the slot only one way. 3 With ejectors open, press the DIMM into the slot.
Upgrades Memory—DRAM or VRAM - 1 1 VRAM Note: SGRAM DIMM shape and components may vary. 1 To remove existing SGRAM DIMM, spread arms of video memory slot apart slightly.
Upgrades Memory—DRAM or VRAM - 1 2 2 Align SGRAM DIMM notches with VRAM slot ribs. Note: SGRAM DIMM fits into slot only one way. 3 Press the SGRAM DIMM into the slot.
Upgrades Memory—DRAM or VRAM - 1 3 Close Chassis 1 Lift up the chassis support arm from the hole on the chassis floor and gently swing the chassis back into place.
Upgrades Memory—DRAM or VRAM - 1 4 2 Close expansion card cover. 3 Press the release switches toward the outside of the computer. 4 Swing the support foot back inside the computer housing.
Upgrades Modem Card - 1 5 Modem Card Before you begin, do the following: • Remove the top housing • Open the internal chassis • Remove the I/O Card.
Upgrades Modem Card - 1 6 1 Insert a small flatblade screwdriver in the modem slot cover on the I/O card. 2 Gently twist the screwdriver to pop out the metal modem slot cover.
Upgrades Modem Card - 1 7 3 Holding the modem card at a slight angle to the I/O card, insert the metal lip on the modem card’s connector panel through the opening in the I/O card.
Upgrades Modem Card - 1 8 4 Gently swing down the modem card so that it is aligned on top of the modem card slot on the I/O card. 5 Gently press down evenly on the modem card to install it.
Upgrades Modem Card - 1 9 6 Reinstall the I/O card in the computer. Be sure to insert the three screws that secure the I/O card to the metal chassis..
Service Source K Troubleshooting Power Macintosh G3 Desktop.
Troubleshooting General/ - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. Because cures are listed on the charts in the order of most likely solution, try the cures in the order presented.
Troubleshooting New Components Theory of Operation/ Voltage Regulator - 2 New Components Theory of Operation New components on the Power Macintosh G3 logic boards and new strategies for parts replacement make troubleshooting these systems significantly different from previous models.
Troubleshooting New Components Theory of Operation/ Processor Module - 3 Processor Module The Power Macintosh G3 logic board comes with a removable pro- cessor module. You can replace this module when the logic board or processor module fails. The processor module sits in a ZIF socket for easy removal.
Troubleshooting New Components Theory of Operation/ Jumper Location J16 - 4 Jumper Location J16 The jumper block you place at location J16 configures the board to work with different processor modules. Use the appropriate jumper block, identified by color, for each processor module.
Troubleshooting New Components Theory of Operation/ Jumper Location J28 - 5 Jumper Location J28 Jumper location J28 controls which power supply the Power Macintosh G3 logic board can accommodate. When you receive a Power Macintosh G3 logic board from Service, you need to place the jumper in the proper location.
Troubleshooting New Components Theory of Operation/ I/O Cards - 6 I/O Cards Power Macintosh G3 computers require an I/O card that moves audio and/or video from the main logic board. These cards are placed in the PERCH connector on the main logic board.
Troubleshooting New Components Theory of Operation/ HFS+ Formatted Drives - HFS+ Formatted Drives Some Power Macintosh G3 Desktop computers ship with hard drives that are formatted with HFS and some later models ship with hard drives that are formatted with HFS+ (also referred to as Mac OS Extended format).
Troubleshooting New Components Theory of Operation/ HFS+ Formatted Drives - verify whether or not the customer may have used the wrong disk repair software for their drive before assuming that the problem is hardware related.
Troubleshooting New Components Theory of Operation/ HFS+ Formatted Drives - drive has been formatted. Drives formatted with HFS will appear as “Mac OS Standard”, while drives formatted with HFS+ will appear as “Mac OS Extended.” For more information on HFS+ formatting of hard drives, refer to the Technical Info Library, article # 30344.
Troubleshooting Cleaning Procedure for Card Connectors/ HFS+ Formatted Drives Cleaning Procedure for Card Connectors It is possible for residue to build up on the gold edge connector pins on some PCI cards, which could cause a variety of symptoms. If you are having problems with a PCI card, inspect the connector pins with a magnifying glass.
Troubleshooting Power Supply Verification/ Verification Procedure - 1 1 Power Supply Verification The Power Macintosh G3 logic board requires a “trickle” power of +5V in order to power-up. If this trickle power is not present, the system will not power-up.
Troubleshooting Power Supply Verification/ Verification Procedure - 1 2 1 . Plug in a known-good power cord into the back of the com- puter. Note: Do NOT power on the computer. Note: For the next steps, refer to Figure 1 on the next page to identify the pins indicated.
Troubleshooting Power Supply Verification/ Verification Procedure - 13 Figure 1. Power Supply 20-Pin Connector.
Troubleshooting Power Supply Verification/ Verification Procedure - 1 4 3 . Power up the computer by pressing the On/Off button on the front of the Power Mac G3. Note: Verify that the power on/off cable is plugged into connector J30. If the computer powers up normally then the power supply is OK.
Troubleshooting Power Supply Verification/ Verification Procedure - 1 5 measure approximately +3.3V. If you do not measure +3.3V, re-check the voltmeter connec- tions and check for voltage again. If voltage is still not present, replace the power supply; otherwise, continue on to the next step.
Troubleshooting Power Supply Verification/ Verification Procedure - 16 If you do not measure +12V, re-check the voltmeter connec- tions and check for voltage again. If voltage is still not present, replace the power supply; otherwise, continue on to the next step.
Troubleshooting Symptom Charts/ System - 1 7 Symptom Charts System Fan on power supply is running, but no startup chime, screen is black, drive not accessed at startup, and no LED on front of system 1 Verify power supply voltage switch is set correctly for your region (see “Voltage Switch” in Basics chapter for more information).
Troubleshooting Symptom Charts/ System - 1 8 6 Reseat ROM DIMM. 7 Replace voltage regulator. 8 Replace logic board. 9 Replace processor module. Fan is running, LED is on, drive is accessed at startup, but no startup chime and screen is black Reseat ROM DIMM.
Troubleshooting Symptom Charts/ System - 1 9 Apart chapter for more information). 6 Reset Cuda chip. (Refer to “The Cuda Chip” in Basics chapter for instructions.) 7 Reset logic board. (Refer to “Resetting the Logic Board” in Basics chapter for instructions.
Troubleshooting Symptom Charts/ System - 2 0 Computer begins to power up, the fan and hard drive are spinning, the power LED is lit, but there is no video and the boot chime is followed by sound of breaking glass 1 Reseat ROM DIMM. 2 Reseat DRAM DIMMs.
Troubleshooting Symptom Charts/ System - 2 1 5 Replace logic board. 6 Replace floppy drive cable. 7 Replace floppy drive. 8 Replace I/O card. System shuts down intermittently 1 Make sure air vents are clear. Thermal protection circuitry may shut down system.
Troubleshooting Symptom Charts/ System - 2 2 System intermittently crashes or hangs 1 Verify system software is version 8.0 or later with enabler 770. 2 Verify software is known-good. Do a clean install of system software. 3 Verify software is Power Macintosh compatible (contact developer).
Troubleshooting Symptom Charts/ System - 2 3 During startup, following message is displayed, "This startup disk will not work on this Macintosh model...." 1 Verify startup disk is good. 2 Verify system software is version 8.0 or later with enabler 770.
Troubleshooting Symptom Charts/ Error Chords - 24 Error Chords One-part error chord (sound of breaking glass) sounds during startup sequence 1 Disconnect IDE data cable from hard drive and reboot system. If startup sequence is normal, initialize hard drive.
Troubleshooting Symptom Charts/ Video - 2 5 Video Screen is black, but boot tone is present, drive operates, fan is running, and LED is lit 1 Adjust brightness on monitor. 2 Clear parameter RAM. Hold down Command-Option-P-R during startup but before "Welcome to Macintosh" appears.
Troubleshooting Symptom Charts/ Video - 2 6 Screen is black, no boot tone and drive does not operate, but fan is running and LED is lit 1 Reset Cuda chip. (Refer to “The Cuda Chip” in Basics chapter for instructions.) 2 Reset logic board. (Refer to “Resetting the Logic Board” in Basics chapter for instructions.
Troubleshooting Symptom Charts/ Video - 2 7 5 Replace logic board. 6 Replace processor module. Horizontal flickering lines when viewing Apple Video Play application with TV Mirroring on Replace the Audio/Video card with a Version II Audio/Video card (p/n 661-2044).
Troubleshooting Symptom Charts/ Floppy Drive - 28 Floppy Drive Internal floppy drive does not operate 1 Replace floppy disk with known-good disk. 2 Replace floppy drive cable.
Troubleshooting Symptom Charts/ Floppy Drive - 29 4 Replace logic board. 5 Replace processor module. Drive attempts to eject disk, but doesn’t 1 Reseat floppy drive bezel and drive so bezel slot aligns correctly with drive. 2 Replace floppy drive. Internal floppy drive runs continuously 1 Replace disk with known-good floppy disk.
Troubleshooting Symptom Charts/ Hard Drive - 30 Hard Drive Single internal hard drive does not operate; drive doesn’t spin 1 Replace hard drive power cable. 2 Replace hard drive. If problem resolved, reinstall IDE device driver and system software. 3 Replace power supply.
Troubleshooting Symptom Charts/ Hard Drive - 31 Works with internal or external SCSI devices but not with both 1 Verify there are no duplicate SCSI device addresses 2 Replace terminator on external SCSI device. 3 Verify that SCSI device at end of internal SCSI data cable is only device terminated.
Troubleshooting Symptom Charts/ Peripherals - 3 2 Peripherals Cursor does not move 1 Check mouse connection. 2 Inspect inside of mouse for buildup of dirt or other contaminants. Clean mouse if necessary. Note: The mouse contains a ball and several rollers that must remain clean.
Troubleshooting Symptom Charts/ Peripherals - 3 3 Cursor moves, but clicking mouse button has no effect 1 Boot from floppy or bootable CD. 2 Replace mouse. 3 Replace logic board. Double-click doesn’t open application, disk, or server 1 Remove duplicate system folders.
Troubleshooting Symptom Charts/ Peripherals - 3 4 Known-good serial printer does not work 1 Verify you have correct version of system software. 2 Verify that Chooser is set correctly. 3 Reinstall correct printer drivers. 4 Do clean install of system software.
Troubleshooting Symptom Charts/ CD-ROM Drive - 35 CD-ROM Drive CD-ROM drive does not work 1 Try using known-good compact disc. 2 Replace CD-ROM drive mechanism. Macintosh does not display CD-ROM icon once CD is inserted in drive 1 Try using known-good compact disc.
Troubleshooting Symptom Charts/ CD-ROM Drive - 36 ejects properly. ( Note: Be sure to push the CD carrier in all the way before testing; if the CD device is not properly seated, the problem may recur.
Troubleshooting Symptom Charts/ CD-ROM Drive - 37.
Troubleshooting Symptom Charts/ CD-ROM Drive - 38 CD-ROM drive ejects at startup time Adjust the CD-ROM drive carrier to mount as far forward as possible to allow the CD-ROM Drive to mount as far back as possible.
Troubleshooting Symptom Charts/ CD-ROM Drive - 39 CD-ROM drive vibrates and is unusually loud when CD spins Install rubber bumper (part number 922-3678) on the side of the CD-ROM drive as shown in the following graphic.
Troubleshooting Symptom Charts/ Miscellaneous - 40 Miscellaneous No sound from speaker 1 Disconnect any microphones or external speakers. 2 Verify that volume setting in Control Panel is adequate and mute is not checked. 3 Clear parameter RAM. Hold down Command-Option-P-R during startup but before "Welcome to Macintosh" appears.
Service Source K Exploded V ie w Po wer Macintosh G3 Desktop.
Exploded View 2 Top Housing 922-3282 CD-ROM Drive 661-1401 Rear Panel (Part of Chassis) Speaker 922-1639 Speaker Housing 922-1640 CD-ROM Carrier 922-0850 Floppy Drive 661-1390 Zip Drive 661-1331 Flopp.
Power Macintosh G3 Desktop Screw Matrix Floppy Drive to Carrier (4) CD-ROM Drive to Carrier (4) Zip-Drive to Carrier (4) Hard Drive Bracket to Chassis (2) w/lock washer w/lock washer PCI Covers (1)ea =3 Power Supply Case to swing Chassis (1) (2) on rear side of Power Supply .
About Y our Optional P ower Macintosh A udio/ V ideo Card The information in this update describes the additional capabilities of Power Macintosh computers that are equipped with an optional Audio/Video (A V ) card. F or more information on setting up or using your P ower Macintosh computer , see the setup manual that came with you computer .
If your equipment has a different connector , you can purchase an adapter at an electronics supply store. Connecting Audio Equipment Using the RCA Ports T o connect audio equipment using the RCA ports on the A V card, follow the steps below .
Connecting Video Equipment The P ower Macintosh A V card provides additional ports for connecting video equipment so that you can view TV and other video images on your computer monitor and store the images on your hard disk.
Note: The S-video input port is compatible with both seven-pin and four-pin S-video connectors. Important The S-video connector is a round plug with several small metal pins. It resembles other Macintosh connectors, such as those for a printer , modem, mouse, or keyboard.
If the S-video connector doesn ’t slide easily into the port, check the pin alignment and tr y again. Don ’t use force, which could damage the computer or cable. 4 Plug the RCA-type connectors on the audio cables into the left and right RCA Audio Out ports on the VCR or camera.
S-video connection for input from a camera Composite video connection for input from a camera 6 T ur n on the computer and the VCR or camera. 7 T o hear or capture on your computer the audio coming in.
Connecting Video Equipment for Output From the Computer Y ou can connect a VCR to record computer images and audio on videotape. The VCR records what is happening on the computer ’s monitor , sounds generated by the computer , and speech spoken into a microphone if one is connected.
Depending on whether your equipment has S-video or composite video (RCA-type) ports, your finished connections should look like one of the following: S-video connection for output from the computer Composite video connection for output from the computer 6 T ur n on the computer and the VCR .
Connecting a Television Y ou can connect to your computer any television that has either an S-video or composite video input port and A udio In ports. The television displays a mirror image of the computer monitor display , and (if the television has speak ers) plays the sounds generated by the computer .
Television used as a monitor with a composite video connection 2 T ur n on the television and the computer . 3 Click the TV Mirroring icon in the Control Strip, and choose T ur n TV Mir roring On from the menu that appears. A message warns you to make sure a television is connected before continuing.
T o tur n off TV Mirroring, click the TV Mir roring icon in the Control Strip, and choose T ur n TV Mir roring Off from the menu that appears. Power Macintosh AV Card Specifications Video Input m T yp.
Update: About Y our Build-T o- Order Macintosh Congratulations on purchasing your Macintosh computer . Since you chose the components of your computer , parts of it may differ from what’s described in the manual that came with it.
10/100Base-T Ethernet Card Specifications m Open T ransport: Mac OS 7.5.2 or later , AppleShare, Apple T alk, NetW are for Macintosh, TCP /IP m Connector: RJ-45 (for 10Base-T and 100Base-T ) m Media, 10Base-T : Cat 3, 4, or 5 UTP on 2 pairs up to 100 meters (m) m Media, 100Base-T : Cat 5 UTP on 2 pairs up to 100 m m Bus interface: PCI revision 2.
3 About the Ultra Wide SCSI Bus Up to three internal devices can be connected to the Ultra Wide S C SI bus on this card. All devices on the same SC SI bus must have unique ID numbers, but devices on different S C SI buses may use the same SC SI ID number .
Ultra Wide SCSI Card Specifications m A utomatic termination m Advanced Data Streaming T echnology (ADS) m RAID -ready m Embedded RISC I/P processor m Ultra SC SI connector: Fine pitch 68-pin “P” m Flash ROM BIOS m PCI 2.
Using Disk Utilities and Formats With RAID Important Drive Setup, the disk utility from Apple Computer , should not be used with RAID volumes. Y ou must manage your RAID volumes using the RAID application.
Display Modes and Color Depths Resolution 1 Color Depths Vertical Refresh Rate (Hertz) 512 x 384 256, thousands, millions 60 640 x 480 256, thousands, millions 60, 67, 75, 85, 120 640 x 870 256, thous.
Apple FireWire Card The optional Apple F ire Wire Card is designed to work with digital video camcorders and decks that use the DV format and have a F ire Wire port (sometimes mark ed IEEE 1394 or D V IN/OUT ). The included hardware and software, together with a non-linear editing application, allow you to capture DV movie clips to your hard disk.
T o connect your Macintosh to a DV camera, plug the 6-pin connector into the Apple F ire Wire Card and the 4-pin connector into the camera’s D V port.
DVD-ROM Drive If you chose the D VD -ROM option for your computer , you have a D VD -ROM drive in place of the CD -ROM drive. This type of drive is used in the same way as a CD -ROM drive, but allows .
An important point after buying a device Apple Power Macintosh G3 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Apple Power Macintosh G3 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Apple Power Macintosh G3 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Apple Power Macintosh G3 you will learn all the available features of the product, as well as information on its operation. The information that you get Apple Power Macintosh G3 will certainly help you make a decision on the purchase.
If you already are a holder of Apple Power Macintosh G3, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Apple Power Macintosh G3.
However, one of the most important roles played by the user manual is to help in solving problems with Apple Power Macintosh G3. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Apple Power Macintosh G3 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
