K Service Source Macintosh LC Series/ Quadra 605 Macintosh LC, Macintosh LC II, Macintosh LC III, Macintosh LC 475, Macintosh Quadra 605
K Service Source Basics Macintosh LC Series/Quadra 605
Basics Overview - 2 Overview This manual includes complete repair procedures for the Macintosh LC Series/ Quadra 605, shown at left.
K Service Source Specifications Macintosh LC Series/Quadra 605
Specifications Introduction - 1 Introduction Specifications information for this product can be found in this chapter and also in the Spec Database, which you can access in one of three ways: — Launch it directly by double-clicking the Apple Spec Database runtime alias at the top level of the Main Service Source CD. — Select "Apple Spec Database" from the Service Source drop-down main menu. — Click the Acrobat toolbar icon for the database, which is near the right end of the toolbar with the letters "SP.
Specifications Processor - 2 Processor LC LC II LC III Motorola 68020 microprocessor 16 MHz 16-bit internal data bus Motorola 68030 microprocessor 16 MHz 16-bit internal data bus Burst-mode RAM access Motorola 68030 microprocessor 25 MHz 32-bit internal data bus Burst-mode RAM access Coprocessor socket
Specifications LC 475/Quadra 605 Processor - 3 Motorola 68LC040 microprocessor 25 MHz 32-bit internal data bus Burst-mode RAM access
Specifications Memory - 4 Memory DRAM ROM LC: 2 MB, expandable to 10 MB (100 ns or faster SIMMs) LC II: 4 MB standard, expandable to 10 MB (100 ns or faster SIMMs) LC III: 4 MB standard, expandable to 36 MB (80 ns or faster SIMMs) LC 475/Quadra 605: 4 MB or 8 MB standard, expandable to 36 MB (80 ns or faster SIMMs) LC/LC II: 512 K LC III/LC 475/Quadra 605: 512K expandable to 1 MB
Specifications VRAM Memory - 5 LC: 256K VRAM, upgradable to 512K LC II: 256K VRAM SIMM, upgradable to 512K LCIII: 512K VRAM on board, upgradable to 768K LC 475/Quadra 605: Two 256K VRAM SIMMs, upgradable to 1MB
Specifications Disk Storage - 6 Disk Storage Floppy Drive Hard Drive LC/ LC II/ LC III: Apple SuperDrive 1.4 MB Floppy Disk Drive Optional second internal 1.4 MB floppy drive (LC only) LC 475/Quadra 605: Apple SuperDrive 1.
Specifications I/O Interfaces - 7 I/O Interfaces Serial Two RS-232/RS-422 serial ports; mini DIN-8 connectors SCSI SCSI interface; DB-25 connector Apple Desktop Bus One ADB port; mini DIN-4 connector Video One DB-15 monitor port for built-in video; DA-15 connector Sound LC/LC II/LC III: Mono sound input and output port; mini phono plug LC 475/Quadra 605: Mono sound input port; stereo output; mini phono plug
Specifications Expansion Connector I/O Interfaces - 8 LC: 96-pin processor-direct slot (PDS) supporting 020 direct slot expansion card LC II: 96-pin PDS supporting 020/030 direct slot expansion card LC III: 114-pin PDS supporting 020/030 direct slot expansion card LC 475/Quadra 605: 114-pin expansion slot supporting 030/ 040 expansion cards. Accepts Macintosh LC compatible I/O display, network, and video capture cards. Does not support 030 processor accelerator or cache cards.
Specifications I/O Devices - 9 I/O Devices Keyboard Apple Keyboard, Apple Keyboard II, Apple Extended Keyboard II, or Apple Adjustable Keyboard connected through ADB ports (mini DIN-4) Mouse ADB mouse and ADB Mouse II connected through ADB ports (mini DIN-4) Microphone Electret, omnidirectional Operates on 8 VDC supplied by microphone port on CPU
Specifications Sound and Video - 10 Sound and Video Sound Video Monaural, 8-bit sound input at 11 or 22 kHz LC, LC II, LC III: Monophonic, 8-bit sound generator supplying same signal to both channels of stereo equipment LC 475 and Quadra 605: Stereo output capability LC and LC II provide built-in support for many monitors, including • Apple High-Resolution Monochrome Monitor • AppleColor High-Resolution RGB Monitor • Macintosh 12-Inch RGB Display • Macintosh 12-Inch Monochrome Display • Macintosh Color
Specifications Video (cont’d) Sound and Video - 11 LC III, LC 475 and Quadra 605 provide up to 16-bit support on 12-, 13-, and 16-inch monitors and 8-bit support on 15inch portrait and 21-inch monitors.
Specifications Electrical - 12 Electrical Line Voltage 100–240 VAC, automatically configured Frequency LC Series: 47–63 Hz Quadra 605: 50–60 Hz Maximum Power LC/LC II: 50 W (not including monitor) LC III: 30 W Quadra 605: 26 W
Specifications Physical - 13 Physical Dimensions Weight Height: 3.0 in. (7.7 cm) Width: 12.2 in. (31.0 cm) Depth: 15.0 in. (38.2 cm) 8.8 lb. (4.
K Service Source Troubleshooting Macintosh LC Series/Quadra 605
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 first cure first. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure. (Note: If you have replaced a module, reinstall the original module before you proceed to the next cure.
Troubleshooting Symptom Charts/Error Chords - 2 Symptom Charts Error Chords Error chord sounds during startup (Macintosh LC) 1 2 3 Replace SIMMs. Perform SIMM verification on replacement logic board. Replace logic board. Retain customer’s SIMMs. Eight-tone error chord sounds during startup (LC II/III/ 475/Quadra 605) 1 2 3 Replace SIMMs. Perform SIMM verification on replacement logic board. Replace logic board. Retain customer’s SIMMs.
Troubleshooting Symptom Charts/Error Chords (Continued) - 3 Error Chords (Continued) Four-tone error chord sounds during startup (Macintosh LC II) 1 2 3 Disconnect hard drive power cable and hard drive data cable and reboot system. If startup sequence is normal, run “Macintosh Hard Disk Test” and replace hard drive if necessary. Disconnect floppy drive cable and reboot system. If startup sequence is normal, replace floppy drive. Replace logic board. Retain customer’s SIMMs.
Troubleshooting Symptom Charts/Built-in Video - 4 Built-in Video Screen is dark, audio and at least one drive operate, fan runs, and LED is lit Screen is dark, audio and drive do not operate, but fan runs and LED is lit 1 2 3 4 5 6 7 8 Adjust brightness on monitor. Try monitor with another Macintosh computer. Check battery. Replace monitor. Troubleshoot defective monitor. See Symptom Charts in appropriate monitor manual. Replace video cable. Replace VRAM SIMM. Replace logic board.
Troubleshooting Symptom Charts/Built-in Video (Continued) - 5 Built-in Video (Continued) Partial or whole screen is bright and audio is present, but no video information is visible 1 2 3 4 Verify monitor works with another Macintosh. Replace video cable. Replace monitor. Replace logic board. Retain customer’s SIMMs. Screen is completely dark, fan is not running, and LED is not lit 1 Plug monitor directly into wall socket. Verify that monitor has power. Remove expansion card, if present.
Troubleshooting Symptom Charts/Built-in Video (Continued) - 6 Built-in Video (Continued) Vertical lines, horizontal lines, or snow appears on screen, or screen is completely dark; startup tone is normal 1 2 3 4 5 6 Verify monitor works with another Macintosh. Replace video cable. Replace monitor. Replace VRAM SIMM. Replace logic board. Retain customer’s SIMMs. Replace power supply.
Troubleshooting Symptom Charts/Floppy Drive - 7 Floppy Drive Audio and video are present, but internal drive does not operate 1 2 3 Replace floppy drive cable. Replace floppy drive. Replace logic board. Retain customer’s SIMMs. Disk ejects; display shows Mac icon with blinking “X” 1 2 3 4 Replace disk with known-good system disk. Replace floppy drive cable. Replace floppy drive. Replace logic board. Retain customer’s SIMMs.
Troubleshooting Symptom Charts/Floppy Drive (Continued) - 8 Floppy Drive (Continued) Drive attempts to eject disk, but doesn’t 1 2 3 4 Push disk completely in. Eject disk manually by pushing opened paper clip into hole beside drive slot. Check that cover is completely on. Replace floppy drive.
Troubleshooting Symptom Charts/Hard Drive - 9 Hard Drive Internal hard drive runs continuously Internal hard drive does not operate 1 2 3 4 Make sure System is version 6.0.7 (or later) for Macintosh LC, version 7.0.1 (or later) for Macintosh LC II, or version 7.1 (or later) for LC III/475 and Quadra 605. Replace hard drive cable. Replace internal hard drive. Replace logic board. Retain customer’s SIMMs. 1 2 3 4 Replace hard drive data cable. Replace hard drive power cable.
Troubleshooting Symptom Charts/Peripherals - 10 Peripherals Works with internal or external SCSI device but does not work with both 1 Cursor does not move 1 2 3 2 3 4 5 4 5 6 7 Verify that SCSI select switch on external device is set to different priority from internal. Verify that both ends of external SCSI device are terminated. Replace terminator on external device. Verify that terminator is installed on internal SCSI drive. Replace SCSI select cable. Reboot system. Check mouse connection.
Troubleshooting Symptom Charts/Peripherals (Continued) - 11 Peripherals (Continued) Cursor moves, but clicking mouse button has no effect 1 2 Replace mouse. Replace logic board. Retain customer’s SIMMs. Double-click doesn’t open application, disk, or server 1 2 Remove extra system files on hard drive. Clear parameter RAM. System 7: Hold down
Troubleshooting Symptom Charts/Peripherals (Continued) - 12 Peripherals (Continued) No response to any key on keyboard 1 2 3 4 5 6 Make sure System is version 6.0.7 (or later) for Macintosh LC, version 7.0.1 (or later) for Macintosh LC II, or version 7.1 (or later) for LC III/475 and Quadra 605. Check keyboard connection to ADB port. Replace keyboard cable. Replace keyboard. Remove battery for 15 to 30 minutes to reset logic board. Replace logic board. Retain customer’s SIMMs.
Troubleshooting Symptom Charts/Peripherals (Continued) - 13 Peripherals (Continued) Known-good LaserWriter does not print 1 2 3 Known-good ImageWriter or ImageWriter II does not print 1 2 3 4 5 6 Make sure that Chooser and Control Panel settings are correct. Make sure System is version 6.0.7 (or later) for Macintosh LC, version 7.0.1 (or later) for Macintosh LC II, or version 7.1 (or later) for LC III/475 and Quadra 605. Reset PRAM. Make sure that Chooser and Control Panel settings are correct.
Troubleshooting Symptom Charts/Miscellaneous - 14 Miscellaneous Clicking, chirping, or thumping 1 2 3 Disconnect hard drive. Replace drive if noise disappears. Replace power supply. Replace logic board. Retain customer’s SIMMs. System shuts down or restarts intermittently 1 Make sure air vents on back and top of case are unobstructed. Thermal protection circuitry may shut down computer. After 30 to 40 minutes, system should be OK. Replace power cable.
Troubleshooting Symptom Charts/Miscellaneous (Continued) - 15 Miscellaneous (Continued) System intermittently crashes or locks up 1 2 3 4 5 Make sure System is version 6.0.7 (or later) for Macintosh LC, version 7.0.1 (or later) for Macintosh LC II, or version 7.1 (or later) for LC III/475 and Quadra 605. Make sure software is known-good. Replace logic board. Retain customer’s SIMMs. Replace SIMMs. Replace power supply.
Troubleshooting Symptom Charts/Miscellaneous (Continued) - 16 Miscellaneous (Continued) System seems to boot, then message “Finder is old version” displays 1 2 System intermittently doesn’t power on 1 2 3 4 5 6 Clear parameter RAM. System 7: Hold down
Troubleshooting Symptom Charts/Miscellaneous (Continued) - 17 Miscellaneous (Continued) Monitor raster width too narrow Refer to Adjustments section in the appropriate monitor manual for horizontal size (width) adjustment. Stand-alone system hangs or crashes 1 2 3 4 5 If using an older LC Ethernet card with a computer running System 7, disable virtual memory. Clear parameter RAM. System 7: Hold down
Troubleshooting Symptom Charts/Miscellaneous (Continued) - 18 Miscellaneous (Continued) Networked 33 MHz LC III freezes 1 2 3 4 Verify 10Base-T cable is secure. Replace 10Base-T adapter card. Remove additional RAM and external SCSI devices. Replace logic board. Clock doesn’t run 1 Replace battery. See “Battery Replacement” in Additional Procedures. Reset PRAM. Verify nothing is connected to sound-out port. Replace logic board. Retain customer’s SIMMs.
K Service Source Take Apart Macintosh LC Series/Quadra 605
Take Apart Top Cover - 1 LC/LC II/LC III/ LC 475 Top Cover No preliminary steps are required before you begin this procedure. 1 2 3 Quadra 605 Remove the case screw if one is present. Lift the tabs at the back of the lid. Lift the top cover straight up.
Take Apart Hard Drive - 2 Hard Drive Hard Drive Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety.
Take Apart Hard Drive Power Cable Hard Drive - 3 1 Hard Drive Data Cable 2 Hard Drive Data Cable Connector Hard Drive Power Connector Release the locking tab and disconnect the hard drive power cable from the connector on the logic board. Disconnect the hard drive data cable from the connector on the logic board.
Take Apart Hard Drive - 4 3 Release the two plastic latches on one side of the hard drive and lift the drive slightly. Repeat on the other side of the drive and remove the drive (with carrier) from the computer. Replacement Note: For information on removing the hard drive from the carrier and returning drives, cables, and carriers to Apple, refer to “Additional Procedures” in the Hard Drives manual.
Take Apart Fan/Speaker Assembly (LC) - 5 Fan/Speaker Assembly Fan/Speaker Assembly (LC) Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety.
Take Apart Fan/Speaker Assembly (LC) - 6 1 Latch Latch 2 Release the latch on one end of the fan/speaker assembly, and lift the assembly slightly. Release the other latch and remove the fan/ speaker assembly from the bottom case.
Take Apart Fan (LC II/III) - 7 Fan (LC II/III) Fan Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety.
Take Apart Fan (LC II/III) - 8 1 2 Fan Cable Latch Fan Connector Latch Disconnect the fan cable from the fan connector on the logic board. Release the plastic latches and lift the fan from the case. Replacement Caution: Be sure to install the fan with the logo side down, or the fan may damage the computer.
Take Apart Speaker (LCII/III) - 9 Speaker (LCII/III) Speaker Before you begin, remove the following: • Top cover • Hard drive Caution: Review the ESD precautions in Bulletins/ Safety.
Take Apart Speaker (LCII/III) - 10 1 Speaker Cable 2 Disconnect the speaker cable from the speaker connector on the logic board. Release the plastic latches and lift the speaker from the case. Replacement Note: Before reconnecting the speaker cable, thread it through the top two brackets that hold the hard drive in place.
Take Apart Floppy Drive - 11 Floppy Drive Floppy Drive Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety.
Take Apart Floppy Drive - 12 Floppy Drive Cable Macintosh LC 1 2 Floppy Drive Cable Connector Disconnect the floppy drive cable from the connector on the logic board. Note: Retain the old floppy drive cable. Use the old cable on the new exchange module. Release the two latches on one side of the drive and lift the drive slightly. Repeat on the other side and remove the drive from the case.
Take Apart Floppy Drive - 13 Replacement Note: Before you install a replacement 1.4 MB SuperDrive, you must remove the dust shield.
Take Apart Floppy Drive - 14 Latch Floppy Drive LC II/LC III/Quadra 605 1 2 Floppy Drive Connector Latch Disconnect the floppy drive cable from the connector on the logic board. Release the two latches at the rear of the floppy drive and remove the drive from the case. Replacement Note: Before you install a replacement auto-inject 1.4 MB SuperDrive, you must remove the dust shield, if present.
Take Apart Floppy Drive - 15 Replacement Note: You may encounter either an Apple SuperDrive or a manual eject floppy drive in some models. Replace floppy drives like for like.
Take Apart Power Supply - 16 Power Supply Power Supply Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety.
Take Apart Power Supply - 17 1 Power Supply Cable Power Supply Connector 2 Disconnect the power supply cable from the connector on the logic board. Release the two latches that secure the front end of the power supply to the bottom case, and lift the power supply out of the case.
Take Apart Logic Board - 18 Logic Board Before you begin, remove the following: • Top cover • Fan/speaker assembly (LC) • Fan (LC II/III/475 and Quadra 605) Logic Board Caution: Review the ESD precautions in Bulletins/ Safety.
Take Apart Logic Board - 19 Power Supply Cable 1 Floppy Drive Cable Fan Cable Speaker Cable Hard Drive Data Cable Expansion Connector Expansion Card Hard Drive Power Cable 2 Disconnect the following cable connectors from the logic board: • Hard drive power cable • Hard drive data cable • Floppy drive cable • Power supply cable • Fan cable (LC II/III/ LC 475 and Quadra 605) • Speaker cable (LC II/ III/LC 475 and Quadra 605) Remove the expansion card (if installed).
Take Apart Logic Board - 20 Caution: In the next step, be sure the power on/off button clears the rear panel before you remove the logic board. While lifting the board, do not touch any components or connectors on the back of the logic board. (The oil from your skin can harm the connectors.
Take Apart Logic Board - 21 3 Latch Latch Expansion Connector Using your forefingers, spread the two latches that secure the logic board to the bottom case. At the same time, using your right thumb, push on the expansion connector and slide the logic board toward the front of the case.
Take Apart Logic Board - 22 4 Gently lift the board from the case. Replacement Note: Remove the SIMMs from the defective logic board and install them on the replacement logic board.
Take Apart Logic Board - 23 5 Quadra 605 Logic Board Jumper J18 Remove the jumper from the pins at location J18 on the defective board. Replacement Note: The LC 475 and Quadra 605 use the same logic board replacement. The Quadra 605 requires a jumper to connect the pins at location J18. Quadra 605 service replacement logic boards do not include the jumper.
Take Apart Logic Board - 24 6 Quadra 605 Logic Board Jumper J18 Install a jumper on the pins at location J18 on the Quadra 605 service replacement logic board.
Take Apart Logic Board - 25 Foam Grounding Pad Connecting Grounding Spring Replacement Note: The replacement logic boards for the LC 475 and the Quadra 605 do not include grounding connectors. You must remove the grounding connector from the defective board and install it on the replacement board. There are two versions of grounding connectors, a foam grounding pad and a connecting grounding spring. You may encounter either version on LC 475 and Quadra 605 logic boards.
Take Apart Logic Board - 26 Audio Ports Rough Side Out Foam Grounding Pad Audio Ports Connecting Grounding Spring Spring Arms Out 7 8 Install the foam grounding pad on the audio ports of the replacement logic board with the rough side of the pad facing out. Install the connecting grounding spring on the audio ports of the replacement logic board with the arms of the spring facing out.
K Service Source Upgrades Macintosh LC Series/Quadra 605
Upgrades LC Ethernet Upgrade - 1 LC Ethernet Upgrade Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety. LC Ethernet Card Note: The finished goods LC Ethernet Card package includes the LC Ethernet Card and standoffs. If you order service parts, you must order the standoffs separately from the card.
Upgrades LC Ethernet Upgrade - 2 1 Long Standoff 2 Short Standoff Insert the short standoff in the hole on the corner near the connector end of the card. Insert the long standoff in the hole on the center edge of the card. Caution: Failure to install the standoffs can cause the computer to restart intermittently.
Upgrades LC Ethernet Upgrade - 3 LC Ethernet Card 3 4 5 Position the card so that the external connector extends through the expansion connector opening. Pivot the card over the expansion slot. Press the connector pins into the connector slot. Note: Do not force the card into the slot. If you meet a lot of resistance, pull the card out and reseat it.
Upgrades LC II Upgrade - 4 LC II Upgrade Macintosh LC Logic Board Before you begin, remove the following: • Top cover • Fan/speaker assembly • Logic board Caution: Review the ESD precautions in Bulletins/ Safety. Note: A Macintosh LC II upgrade kit upgrades a Macintosh LC to a Macintosh LC II. The upgrade kit includes a Macintosh LC II logic board and cover.
Upgrades LC II Upgrade - 5 1 Macintosh LC II Logic Board 2 Install the Macintosh LC II logic board. Install the customer’s SIMMs into the new logic board.
Upgrades LC II Upgrade - 6 Replacement Note: After replacing the fan/speaker assembly, install the Macintosh LC II top cover. Make sure that the connections to the soundout and sound input ports are correct. Inserting equipment into the wrong port can damage the computer or equipment.
Upgrades LC to LC III Upgrade - 7 LC to LC III Upgrade Macintosh LC III Upgrade Before you begin, remove the following: • Top cover • Fan/speaker assembly • Floppy drive • Logic board Caution: Review the ESD precautions in Bulletins/ Safety.
Upgrades LC to LC III Upgrade - 8 Note: A Macintosh LC III upgrade kit includes LC III logic board, bottom case, top cover, power supply, speaker, fan, and floppy drive carrier. Note: You will use only a few parts from the original LC in upgrading an LC to an LC III. The following procedures explain how to remove the LC parts and install them into the LC III upgrade unit.
Upgrades LC to LC III Upgrade - 9 1 2 LC Floppy Drive Carrier Floppy Drive Cable Apple 1.4 MB SuperDrive Remove the Macintosh LC floppy drive and floppy drive cable. (See “Floppy Drive” in Take Apart.) Remove the floppy drive and cable from the LC floppy drive carrier.
Upgrades LC to LC III Upgrade - 10 3 LC III Upgrade Floppy Drive Carrier Apple 1.4 MB SuperDrive Floppy Drive Cable Install the floppy drive with cable into the LC III floppy drive carrier.
Upgrades LC to LC III Upgrade - 11 4 1.4 MB SuperDrive in LC III Upgrade Carrier 5 Install the floppy drive into the floppy drive bay of the LC III upgrade bottom case. Connect the floppy drive cable to the floppy drive connector on the logic board. Replacement Note: If you are installing a replacement auto-inject 1.4 MB SuperDrive, you must remove the dust shield, if present.
Upgrades Hard Drive Data Cable LC to LC III Upgrade - 12 6 LC Hard Drive with Carrier 7 Hard Drive Power Cable LC III Hard Drive Bay 8 LC III Bottom Case Remove the Macintosh LC hard drive with carrier, hard drive data cable, and hard drive power cable. (See “Hard Drive” in Take Apart.) Install the LC hard drive into the hard drive bay of the LC III upgrade bottom case. Connect the hard drive data cable and hard drive power cable connectors to the connectors on the LC III upgrade logic board.
Upgrades LC to LC III Upgrade - 13 9 Install the LC VRAM SIMMs and the expansion card (if present) into the LC III upgrade logic board. Note: DRAM SIMMs from an LC are not compatible with the LC III. 10 Attach the top cover.
Upgrades LC II to LC III Upgrade - 14 LC II to LC III Upgrade Macintosh LC III Upgrade Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety.
Upgrades LC II to LC III Upgrade - 15 Note: A Macintosh LC III upgrade kit upgrades a Macintosh LC II to a Macintosh LC III. The upgrade kit includes a Macintosh LC III logic board, top cover, fan, speaker, and a floppy drive carrier. When upgrading an LC II to an LC III, you will need only the LC III logic board.
Upgrades LC II to LC III Upgrade - 16 1 Macintosh LC III Logic Board Install the Macintosh LC III logic board. (See Take Apart chapter.
Upgrades LC II to LC III Upgrade - 17 2 Install the fan and new Macintosh LC III top cover (see Take Apart chapter). Replacement Caution: Make sure that the connections to the sound-out and sound input ports are correct. Inserting equipment into the wrong port can damage the computer or equipment.
Upgrades LC 475 Logic Board Upgrade - 18 LC 475 Logic Board Upgrade Macintosh LC II or III Logic Board Before you begin, remove the following: • Top cover • Fan • Logic board Caution: Review the ESD precautions in Bulletins/ Safety.
Upgrades LC 475 Logic Board Upgrade - 19 Note: A Macintosh LC 475 upgrade kit upgrades a Macintosh LC II or III to a Macintosh LC 475. The upgrade kit includes a Macintosh LC 475 logic board and product ID labels.
Upgrades LC 475 Logic Board Upgrade - 20 1 Audio Ports Connecting Grounding Spring Note: The upgrade kit does not include a connecting grounding spring. You must order this part separately. Before installing the upgrade logic board, install the connecting grounding spring on the audio ports of the board, with the arms of the spring facing out.
Upgrades LC 475 Logic Board Upgrade - 21 2 Macintosh LC 475 Logic Board Install the Macintosh LC 475 logic board.
Upgrades LC 475 Logic Board Upgrade - 22 3 Install the fan and top cover (see Take Apart chapter).
Upgrades Macintosh Processor Upgrade - 23 Macintosh Processor Upgrade (including 256K Cache Card) Macintosh Processor Upgrade Before you begin, remove the following: • Top cover • I/O door • Logic board • Card in the PDS slot (if any) Caution: Review the ESD precautions in Bulletins/ Safety.
Upgrades Macintosh Processor Upgrade - 24 Macintosh Processor Upgrade with 256K Cache Card Hook-and-Loop Fasteners 040 Heat Sink Spacer 256K Cache Card Processor Removal Tool Note: The Macintosh Processor Upgrade kit allows 68LC040 computers to switch between a PowerPC 601 processor and a 68LC040 processor. The upgrade board includes the PowerPC 601 processor on board and a socket to accept the customer’s 68LC040 processor.
Upgrades Macintosh Processor Upgrade - 25 Note: The Macintosh Processor Upgrade comes packaged with the Macintosh Processor Upgrade board, 256K cache card, 040 heat sink, and hook-and-loop fasteners. If you need to order service replacement parts, order the parts separately. Note: To install the upgrade, you will need a processor removal tool. Order the removal tool as a separate service part.
Upgrades Macintosh Processor Upgrade - 26 Note: The cache card comes installed on the upgrade board.
Upgrades Macintosh Processor Upgrade - 27 Installation Procedure Overview There are three basic steps to installing the Macintosh Processor Upgrade on LC 475 and Quadra 605 computers. • Remove the 68LC040 processor from the customer’s logic board • Install the 68LC040 processor on the upgrade board • Install the upgrade board on the logic board Detailed procedures follow.
Upgrades Macintosh Processor Upgrade - 28 1 2 68LC040 Processor Locate the 68LC040 processor on the logic board.
Upgrades Macintosh Processor Upgrade - 29 Processor 3 Processor Removal Tool Processor Socket Note: This graphic shows the proper way to remove any 68LC040 chip from its logic board. Your logic board may differ somewhat from this graphic Position the teeth of the processor removal tool in the groove between the processor and the logic board socket.
Upgrades Macintosh Processor Upgrade - 30 Caution: Be sure to lift up on the handle of the processor removal tool. Pressing down could damage components on the logic board. 4 5 Caution: Pry up each side of the processor only slightly to avoid bending the pins. Gently lift up the processor removal tool handle and pry up each side of the processor from the socket. Remove the processor.
Upgrades Macintosh Processor Upgrade - 31 Install the 68LC040 Processor on the Upgrade Board Spacer Note: The alignment corner of the 68LC040 processor is missing one pin. The alignment corner of the spacer is missing a pin hole. 1 Alignment Corners 68LC040 Processor 2 Position the spacer alignment corner over the 68LC040 processor alignment corner Place the spacer on the processor.
Upgrades Macintosh Processor Upgrade - 32 Caution: Forcing the 68LC040 processor connector pins into the socket could damage the pins. If the processor resists installation, check the pin alignment. 68LC040 Processor Caution: Place the upgrade board on a firm even surface to avoid bending the upgrade board when pressing the processor into the socket. Caution: Use two thumbs to evenly distribute the pressure as you press the processor into the socket.
Upgrades Macintosh Processor Upgrade - 33 3 4 Hold the processor and spacer together and position the spacer alignment corner over the upgrade socket alignment corner. Press the processor connector pins into the socket until you hear a “snap.
Upgrades Macintosh Processor Upgrade - 34 040 Processor Spacer Small Gap Barrel Sockets Note: On a correctly installed 040 processor, a very small gap separates the 040 chip from the metal spacer. A larger gap caused by the board barrel sockets separates the upgrade board and the spacer.
Upgrades Macintosh Processor Upgrade - 35 5 040 Heat Sink Peel the paper from the back of the heat sink and install the heat sink on the processor. Note: Make sure the 040 heat sink is aligned with the sides of the processor.
Upgrades Macintosh Processor Upgrade - 36 Install the Upgrade Board Note: The next step explains how to prepare the logic board to accept the upgrade board. Anti-Static Foam Logic Board, Bottom Side Caution: The EMI clips on the bottom of the LC 475 and Quadra 605 logic boards flex easily. Do not apply heavy pressure directly to these clips or to the logic board, or you may bend the board.
Upgrades Macintosh Processor Upgrade - 37 1 Place a piece of antistatic foam directly under the processor socket on the bottom side of the logic board. Note: This step helps prevent the logic board from bending when you apply pressure in the next few steps.
Upgrades Macintosh Processor Upgrade - 38 2 PowerPC 601Alignment Corner Logic Board Socket Alignment Corner 3 Caution: Forcing the upgrade board connector pins into the logic board socket could damage the pins. If the connector resists installation, check the pin alignment. Position the upgrade connector alignment corner over the logic board socket alignment corner. Carefully align the pins along all sides of the processor and socket.
Upgrades Macintosh Processor Upgrade - 39 4 Firmly press the connector pins into the logic board socket. Note: To install the software, refer to the Macintosh Processor Upgrade Owner's Guide.
Upgrades Macintosh Processor Upgrade - 40 Logic Board and Upgrade Board Returns Return the upgrade and logic boards to their original conditions before sending them to Apple. Be sure to remove the upgrade board from the logic board and reinstall the 68LC040 processor on the logic board. Replacement Caution: To avoid bending any pins when removing the 68LC040 processor, pry up each side only slightly.
K Service Source Additional Procedures Macintosh LC Series/Quadra 605
Additional Procedures Battery Verification - 1 Battery Verification Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety. If handled or discarded improperly, the lithium battery in the computer could explode. Review battery handling and disposal instructions in Bulletins/Safety.
Additional Procedures Battery Verification - 2 1 2 Positive Probe Negative Probe 3 Set the voltmeter to the 10 volts DC scale. Hold the positive probe of the voltmeter to the positive end of the battery and the negative probe to the negative end of the battery. If the battery voltage is below 3.0 volts, replace the battery. Refer to “Battery Replacement” in this chapter.
Additional Procedures Battery Replacement - 3 Battery Replacement Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/ Safety. If handled or discarded improperly, the lithium battery in the computer could explode. Review battery handling and disposal instructions in Bulletins/Safety.
Additional Procedures Battery Replacement - 4 1 2 Insert a small flatblade screwdriver into the top of the holder and gently push the screwdriver down until the side tab pushes out. Repeat on the other end and remove the cover from the holder.
Additional Procedures Battery Replacement - 5 3 4 Grasp the battery and remove it from the holder. Return the battery to Apple for proper disposal. For battery packaging and labeling information, refer to the instructions in Bulletins/Safety.
K Service Source Exploded View Macintosh LC Series, Quadra 605
Exploded View 1 Exploded View Top Case 630-0505 (LC) 6i30-0507 (LC II) 922-0548 (LC III Manual Insert) 922-0199 (LCIII) 922-0582 (Q605) 805-1527 815-1164 SIMMs* VRAM SIMM 661-0722 (256K) 661-1021 (512K) Power Supply 661-1733 Internal Floppy Drive Cable 590-0524 Logic Board* Lithium Battery 742-0011 922-3159 Floppy Drive 661-0121 (Manual Insert) 661-0474 Bottom Case 630-0501 630-0583 (Q605) 6i30-0500 (LC) 815-1154 Hard Drive Data Cable 590-0228 Floppy Drive Carrier 805-0961 805-5111 (LC) 805-0137
