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K Service Source

Macintosh LC Series/ Quadra 605
Macintosh LC, Macintosh LC II, Macintosh LC III, Macintosh LC 475, Macintosh Quadra 605

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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. Figure: Macintosh LC Series, Quadra 605

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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
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

LC II

LC III

Specifications

Processor - 3 Motorola 68LC040 microprocessor 25 MHz 32-bit internal data bus Burst-mode RAM access

LC 475/Quadra 605

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 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

ROM

Specifications

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

VRAM

Specifications

Disk Storage - 6

Disk Storage
Floppy 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 1.4 MB Floppy Disk Drive or Apple SuperDrive Manual Insert Floppy Disk Drive LC: 40 MB or 80 MB LC II: 40 MB, 80 or 160 MB LC III: 40, 80 or 160 MB LC 475/Quadra 605: 160 or 230 MB

Hard Drive

Specifications

I/O Interfaces - 7

I/O Interfaces
Serial SCSI Apple Desktop Bus Video Sound
Two RS-232/RS-422 serial ports; mini DIN-8 connectors SCSI interface; DB-25 connector One ADB port; mini DIN-4 connector One DB-15 monitor port for built-in video; DA-15 connector 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

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.

Expansion Connector

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) ADB mouse and ADB Mouse II connected through ADB ports (mini DIN-4) Electret, omnidirectional Operates on 8 VDC supplied by microphone port on CPU

Mouse

Microphone

Specifications

Sound and Video - 10

Sound and Video
Sound
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 Display · Apple Basic Color Monitor

Video

Specifications

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. LC III, LC 475 and Quadra 605 support all Apple monitors available at CPU introduction dates, including · Apple High-Resolution Monochrome Monitor · AppleColor High-Resolution RGB Monitor · Macintosh 12-Inch RGB Display · Macintosh 12-Inch Monochrome Display · Macintosh Color Display · Apple Basic Color Monitor · Macintosh 16-Inch Color Display (Macintosh LC III only) LC III, LC 475 and Quadra 605 support NTSC and PAL.

Video (cont'd)

Specifications

Electrical - 12

Electrical
Line Voltage Frequency
100­240 VAC, automatically configured LC Series: 47­63 Hz Quadra 605: 50­60 Hz LC/LC II: 50 W (not including monitor) LC III: 30 W Quadra 605: 26 W

Maximum Power

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) 8.8 lb. (4.0 kg)

Weight

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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.) If you are not sure what the problem is, or if the Symptom Charts do not resolve the problem, refer to the Flowchart for the product family. For additional assistance, contact Apple Technical Support.

Troubleshooting

Symptom Charts/Error Chords - 2

Symptom Charts
Error Chords
Error chord sounds during startup (Macintosh LC) Eight-tone error chord sounds during startup (LC II/III/ 475/Quadra 605) 1 2 3 1 2 3 Replace SIMMs. Perform SIMM verification on replacement logic board. Replace logic board. Retain customer's SIMMs. 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 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.

2 3

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 1 2 3 4 5 6 7 8 Screen is dark, audio and drive do not operate, but fan runs and LED is lit 1 2 3 4 5 6 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. Retain customer's SIMMs. Replace power supply. Remove expansion card, if present. Remove peripherals. Disconnect hard drive and floppy drive. Replace SIMMs. Refer to Memory manual. Replace logic board. Retain customer's SIMMs. Replace power supply.

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 Screen is completely dark, fan is not running, and LED is not lit 1 2 3 4 1 2 3 4 5 6 Verify monitor works with another Macintosh. Replace video cable. Replace monitor. Replace logic board. Retain customer's SIMMs. Plug monitor directly into wall socket. Verify that monitor has power. Remove expansion card, if present. Remove peripherals. Disconnect hard drive and floppy drive. Replace power supply. Replace logic board. Retain customer's SIMMs.

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 Disk ejects; display shows Mac icon with blinking "X" Disk does not eject 1 2 3 1 2 3 4 1 2 3 4 5 Replace floppy drive cable. Replace floppy drive. Replace logic board. Retain customer's SIMMs. Replace disk with known-good system disk. Replace floppy drive cable. Replace floppy drive. Replace logic board. Retain customer's SIMMs. Switch off system and hold mouse button down while switching system back on. Remove top cover. Eject disk manually by pushing opened paper clip into hole beside drive slot. Replace floppy drive cable. Replace floppy drive.

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 1 2 3 4 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. Replace hard drive data cable. Replace hard drive power cable. Replace internal hard drive. Replace logic board. Retain customer's SIMMs.

Troubleshooting

Symptom Charts/Peripherals - 10

Peripherals
Works with internal or external SCSI device but does not work with both 1 2 3 4 5 1 2 3 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. If mouse was connected to keyboard, connect mouse to rear ADB port and disconnect keyboard. If mouse works, replace keyboard. If mouse does not work in any ADB port, replace mouse. Remove additional PDS cards. Reset PRAM. Replace logic board. Retain customer's SIMMs.

Cursor does not move

Troubleshooting

Symptom Charts/Peripherals (Continued) - 11

Peripherals (Continued)
Cursor moves, but clicking mouse button has no effect Double-click doesn't open application, disk, or server 1 2 1 2 Replace mouse. Replace logic board. Retain customer's SIMMs. Remove extra system files on hard drive. Clear parameter RAM. System 7: Hold down