Apple Macintosh LC Specifications

Service Source K Macintosh LC Series/Quadra 605 Macintosh LC, Macintosh LC II,Macintosh LC III, Macintosh LC 475,Macintosh Quadra 605

Specifications Disk Storage - 6 Disk Storage Floppy Drive LC/ LC II/ LC III: Apple SuperDrive 1.4 MB Floppy Disk DriveOptional second internal 1.4 M

Upgrades Macintosh Processor Upgrade - 36 Install the Upgrade Board Note: The next step explains how to prepare the logic board to accept the upgr

Upgrades Macintosh Processor Upgrade - 37 1 Place a piece of antistatic foam directly under the processor socket on the bottom side of the logic boa

Upgrades Macintosh Processor Upgrade - 38 2 Caution: Forcing the upgrade board connector pins into the logic board socket could damage the pins. I

Upgrades Macintosh Processor Upgrade - 39 4 Firmly press the connector pins into the logic board socket.Note: To install the software, refer to the

Upgrades Macintosh Processor Upgrade - 40Logic Board and Upgrade Board ReturnsReturn the upgrade and logic boards to their original conditions before

Service Source K 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

Additional Procedures Battery Verification - 2 1 Set the voltmeter to the 10 volts DC scale.2 Hold the positive probe of the voltmeter to the positi

Additional Procedures Battery Replacement - 3 Battery Replacement Before you begin, remove the top cover. Caution: Review the ESD precautions in B

Additional Procedures Battery Replacement - 4 1 Insert a small flat-blade screwdriver into the top of the holder and gently push the screwdriver dow

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

Additional Procedures Battery Replacement - 5 3 Grasp the battery and remove it from the holder.4 Return the battery to Apple for proper disposal. F

Service Source K Exploded View Macintosh LC Series, Quadra 605

Exploded View 1 Exploded View805-1527815-1164Power Supply661-1733Top Case630-0505 (LC)6i30-0507 (LC II)922-0548(LC III Manual Insert)922-0199 (LCII

Specifications I/O Interfaces - 8 Expansion Connector LC: 96-pin processor-direct slot (PDS) supporting 020 direct slot expansion cardLC II: 96-pin

Specifications I/O Devices - 9 I/O Devices Keyboard Apple Keyboard, Apple Keyboard II, Apple Extended Keyboard II, or Apple Adjustable Keyboard conn

Specifications Sound and Video - 10 Sound and Video Sound Monaural, 8-bit sound input at 11 or 22 kHzLC, LC II, LC III: Monophonic, 8-bit sound gene

Specifications Sound and Video - 11 Video (cont’d) LC III, LC 475 and Quadra 605 provide up to 16-bit support on 12-, 13-, and 16-inch monitors and

Specifications Electrical - 12 Electrical Line Voltage 100–240 VAC, automatically configured Frequency LC Series: 47–63 HzQuadra 605: 50–60 Hz Maxim

Specifications Physical - 13 Physical Dimensions Height: 3.0 in. (7.7 cm)Width: 12.2 in. (31.0 cm)Depth: 15.0 in. (38.2 cm) Weight 8.8 lb. (4.0 kg)

Service Source K 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. B

Service Source K Basics Macintosh LC Series/Quadra 605

Troubleshooting Symptom Charts/Error Chords - 2 Symptom Charts Error Chords Error chord sounds during startup (Macintosh LC)1 Replace SIMMs. 2 Perfo

Troubleshooting Symptom Charts/Error Chords (Continued) - 3 Error Chords (Continued) Four-tone error chord sounds during startup (Macintosh LC I

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 lit1 Adj

Troubleshooting Symptom Charts/Built-in Video (Continued) - 5 Built-in Video (Continued) Partial or whole screen is bright and audio is present,

Troubleshooting Symptom Charts/Built-in Video (Continued) - 6 Built-in Video (Continued) Vertical lines, horizontal lines, or snow appears on scr

Troubleshooting Symptom Charts/Floppy Drive - 7 Floppy Drive Audio and video are present, but internal drive does not operate1 Replace floppy drive

Troubleshooting Symptom Charts/Floppy Drive (Continued) - 8 Floppy Drive (Continued) Drive attempts to eject disk, but doesn’t1 Push disk complet

Troubleshooting Symptom Charts/Hard Drive - 9 Hard Drive Internal hard drive runs continuously1 Make sure System is version 6.0.7 (or later) for Mac

Troubleshooting Symptom Charts/Peripherals - 10 Peripherals Works with internal or external SCSI device but does not work with both1 Verify that SCS

Troubleshooting Symptom Charts/Peripherals (Continued) - 11 Peripherals (Continued) Cursor moves, but clicking mouse button has no effect1 Replac

Basics Overview - 2 Overview This manual includes complete repair procedures for the Macintosh LC Series/Quadra 605, shown at left.Figure: Macintosh

Troubleshooting Symptom Charts/Peripherals (Continued) - 12 Peripherals (Continued) No response to any key on keyboard1 Make sure System is versi

Troubleshooting Symptom Charts/Peripherals (Continued) - 13 Peripherals (Continued) Known-good LaserWriter does not print1 Make sure that Chooser

Troubleshooting Symptom Charts/Miscellaneous - 14 Miscellaneous Clicking, chirping, or thumping1 Disconnect hard drive. Replace drive if noise disap

Troubleshooting Symptom Charts/Miscellaneous (Continued) - 15 Miscellaneous (Continued) System intermittently crashes or locks up1 Make sure Syst

Troubleshooting Symptom Charts/Miscellaneous (Continued) - 16 Miscellaneous (Continued) System seems to boot, then message “Finder is old version

Troubleshooting Symptom Charts/Miscellaneous (Continued) - 17 Miscellaneous (Continued) Monitor raster width too narrowRefer to Adjustments secti

Troubleshooting Symptom Charts/Miscellaneous (Continued) - 18 Miscellaneous (Continued) Networked 33 MHz LC III freezes1 Verify 10Base-T cable is

Service Source K Take Apart Macintosh LC Series/Quadra 605

Take Apart Top Cover - 1 Top Cover No preliminary steps are required before you begin this procedure.1 Remove the case screw if one is present.2 Lif

Take Apart Hard Drive - 2 Hard Drive Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/Safety.Hard Drive

Service Source K Specifications Macintosh LC Series/Quadra 605

Take Apart Hard Drive - 3 1 Release the locking tab and disconnect the hard drive power cable from the connector on the logic board.2 Disconnect the

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 t

Take Apart Fan/Speaker Assembly (LC) - 5 Fan/Speaker Assembly (LC) Before you begin, remove the top cover. Caution: Review the ESD precautions in

Take Apart Fan/Speaker Assembly (LC) - 6 1 Release the latch on one end of the fan/speaker assembly, and lift the assembly slightly. 2 Release the o

Take Apart Fan (LC II/III) - 7 Fan (LC II/III) Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/Safety.F

Take Apart Fan (LC II/III) - 8 1 Disconnect the fan cable from the fan connector on the logic board.2 Release the plastic latches and lift the fan f

Take Apart Speaker (LCII/III) - 9 Speaker (LCII/III) Before you begin, remove the following:• Top cover• Hard drive Caution: Review the ESD precau

Take Apart Speaker (LCII/III) - 10 1 Disconnect the speaker cable from the speaker connector on the logic board.2 Release the plastic latches and li

Take Apart Floppy Drive - 11 Floppy Drive Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/Safety.Floppy

Take Apart Floppy Drive - 12 Macintosh LC 1 Disconnect the floppy drive cable from the connector on the logic board. Note: Retain the old floppy d

Specifications Introduction - 1 Introduction Specifications information for this product can be found in this chapter and also in the Spec Database,

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 LC II/LC III/Quadra 605 1 Disconnect the floppy drive cable from the connector on the logic board.2 Release the two lat

Take Apart Floppy Drive - 15 Replacement Note: You may encounter either an Apple SuperDrive or a manual eject floppy drive in some models. Replac

Take Apart Power Supply - 16 Power Supply Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulletins/Safety.Power S

Take Apart Power Supply - 17 1 Disconnect the power supply cable from the connector on the logic board.2 Release the two latches that secure the fro

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

Take Apart Logic Board - 19 1 Disconnect the following cable connectors from the logic board:• Hard drive power cable• Hard drive data cable• Floppy

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. W

Take Apart Logic Board - 21 3 Using your forefingers, spread the two latches that secure the logic board to the bottom case. At the same time, using

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

Specifications Processor - 2 Processor LC Motorola 68020 microprocessor16 MHz16-bit internal data bus LC II Motorola 68030 microprocessor16 MHz16-b

Take Apart Logic Board - 23 5 Remove the jumper from the pins at location J18 on the defective board. Replacement Note: The LC 475 and Quadra 605

Take Apart Logic Board - 24 6 Install a jumper on the pins at location J18 on the Quadra 605 service replacement logic board.J18Quadra 605 Logic Boa

Take Apart Logic Board - 25 Replacement Note: The replacement logic boards for the LC 475 and the Quadra 605 do not include grounding connectors.

Take Apart Logic Board - 26 7 Install the foam grounding pad on the audio ports of the replacement logic board with the rough side of the pad facing

Service Source K 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/Saf

Upgrades LC Ethernet Upgrade - 2 1 Insert the short standoff in the hole on the corner near the connector end of the card.2 Insert the long standoff

Upgrades LC Ethernet Upgrade - 3 3 Position the card so that the external connector extends through the expansion connector opening.4 Pivot the card

Upgrades LC II Upgrade - 4 LC II Upgrade Before you begin, remove the following:• Top cover• Fan/speaker assembly• Logic board Caution: Review the

Upgrades LC II Upgrade - 5 1 Install the Macintosh LC II logic board.2 Install the customer’s SIMMs into the new logic board.Macintosh LC II Logic B

Specifications Processor - 3 LC 475/Quadra 605 Motorola 68LC040 microprocessor25 MHz32-bit internal data busBurst-mode RAM access

Upgrades LC II Upgrade - 6 Replacement Note: After replacing the fan/speaker assembly, install the Macintosh LC II top cover.Make sure that the c

Upgrades LC to LC III Upgrade - 7 LC to LC III Upgrade Before you begin, remove the following:• Top cover• Fan/speaker assembly• Floppy drive• Logic

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,

Upgrades LC to LC III Upgrade - 9 1 Remove the Macintosh LC floppy drive and floppy drive cable. (See “Floppy Drive” in Take Apart.)2 Remove the flo

Upgrades LC to LC III Upgrade - 10 3 Install the floppy drive with cable into the LC III floppy drive carrier.Apple 1.4 MB SuperDriveFloppy Drive Ca

Upgrades LC to LC III Upgrade - 11 4 Install the floppy drive into the floppy drive bay of the LC III upgrade bottom case.5 Connect the floppy drive

Upgrades LC to LC III Upgrade - 12 6 Remove the Macintosh LC hard drive with carrier, hard drive data cable, and hard drive power cable. (See “Hard

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

Upgrades LC II to LC III Upgrade - 14 LC II to LC III Upgrade Before you begin, remove the top cover. Caution: Review the ESD precautions in Bulle

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 incl

Specifications Memory - 4 Memory DRAM LC: 2 MB, expandable to 10 MB (100 ns or faster SIMMs)LC II: 4 MB standard, expandable to 10 MB (100 ns or f

Upgrades LC II to LC III Upgrade - 16 1 Install the Macintosh LC III logic board. (See Take Apart chapter.)Macintosh LC III Logic Board

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 sur

Upgrades LC 475 Logic Board Upgrade - 18 LC 475 Logic Board Upgrade Before you begin, remove the following:• Top cover• Fan• Logic board Caution:

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

Upgrades LC 475 Logic Board Upgrade - 20 1 Note: The upgrade kit does not include a connecting grounding spring. You must order this part separate

Upgrades LC 475 Logic Board Upgrade - 21 2 Install the Macintosh LC 475 logic board. 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 Before you begin, remove the following:• Top cover• I/O door• Logic board• Car

Upgrades Macintosh Processor Upgrade - 24 Note: The Macintosh Processor Upgrade kit allows 68LC040 computers to switch between a PowerPC 601 proce

Upgrades Macintosh Processor Upgrade - 25 Note: The Macintosh Processor Upgrade comes packaged with the Macintosh Processor Upgrade board, 256K c

Specifications Memory - 5 VRAM LC: 256K VRAM, upgradable to 512K LC II: 256K VRAM SIMM, upgradable to 512K LCIII: 512K VRAM on board, upgradable to

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

Upgrades Macintosh Processor Upgrade - 28 1 Locate the 68LC040 processor on the logic board.2 Remove the 68LC040 processor from the logic board68LC0

Upgrades Macintosh Processor Upgrade - 29 Note: This graphic shows the proper way to remove any 68LC040 chip from its logic board. Your logic boa

Upgrades Macintosh Processor Upgrade - 30 Caution: Be sure to lift up on the handle of the processor removal tool. Pressing down could damage comp

Upgrades Macintosh Processor Upgrade - 31 Install the 68LC040 Processor on the Upgrade Board Note: The alignment corner of the 68LC040 processor i

Upgrades Macintosh Processor Upgrade - 32 Caution: Forcing the 68LC040 processor connector pins into the socket could damage the pins. If the pro

Upgrades Macintosh Processor Upgrade - 33 3 Hold the processor and spacer together and position the spacer alignment corner over the upgrade socket

Upgrades Macintosh Processor Upgrade - 34 Note: On a correctly installed 040 processor, a very small gap separates the 040 chip from the metal sp

Upgrades Macintosh Processor Upgrade - 35 5 Peel the paper from the back of the heat sink and install the heat sink on the processor. Note: Make s