Apple Macintosh LC 575 Specifications

Service Source K Macintosh LC 580/Performa 580CD

Specifications Disk Storage - 3 Disk Storage Floppy Drive Built-in 1.4 MB Apple SuperDrive, manual-inject Hard Drive Internal IDE hard drive CD-ROM

Take Apart CRT - 533 Note: When you remove the CRT, place it on a clean, soft surface.Using a 5/16 ratchet, remove the four mounting screw assemblie

Take Apart CRT - 54and are not available individually.Replacement Note: If the rubber washers on the front housing are worn, replace them.Replacemen

Take Apart CRT - 55Replacement Caution: Failure to install the CRT correctly will make it difficult to perform video adjustments. To align the CRT,

Take Apart Internal Microphone - 56Internal MicrophoneBefore you begin, do the following:• Remove the drive bezel• Remove the CD-ROM drive (if instal

Take Apart Internal Microphone - 57• Remove the analog board• Remove the chassis harness assembly• Remove the CRT±Warning: This product contains hi

Take Apart Internal Microphone - 58Push out the two latches and remove the internal microphone board and the rubber microphone gasket.Replacement Cau

Take Apart Front Bezel - 59Front BezelTo remove the front bezel, do the following:• Remove the drive bezel• Remove the CD-ROM drive (if installed)• R

Take Apart Front Bezel - 60• Remove the chassis harness assembly• Remove the CRT• Remove the internal microphone

Service Source K Additional Procedures LC 580/Performa 580CD

Additional Procedures Battery Verification - 1 Battery Verification Before you begin, remove the following:• I/O door• Logic board• Battery Caution:

Specifications I/O Interfaces - 4 I/O Interfaces Serial Two RS-232/RS-422 serial ports for external modem and printerModem port uses a 9-pin mini-DI

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 following:• I/O door• Logic board• Battery Caution:

Additional Procedures Battery Replacement - 4 1 Pull up and disconnect the connector.2 Pull up and remove the battery from its hook-and-loop base.

Service Source K Adjustments LC 580/Performa 580CD

Adjustments Light Meter Setup - 1 Light Meter Setup This topic covers setup for three light meter models: R77, L-248, and 246. Model R77 (Apple part

Adjustments Light Meter Setup - 2 from the lens. Three scales are shown on the light meter:• 200-1000 fc• 50-250 fc• 10-50 fcBecause display screen

Adjustments Light Meter Setup - 3 To measure a display screen’s luminance,1 Set the scale switch to the bottom position (to set up the 10-50 fc scal

Adjustments Light Meter Setup - 4 readings, verify the readings with a known-good light meter or photometer. Also check the age of the R77 light met

Adjustments Light Meter Setup - 5 Model L-248 1 Press the red button on the back of the light meter. If the reading is out of the red area, replace

Adjustments Light Meter Setup - 6 Model 246 1 Remove the metal slide, if installed, from the top of the light meter.2 Install the white lens with th

Specifications I/O Interfaces - 5 Sound Sound-input port for monaural sound inputSound-output port capable of delivering 8-bit stereo sound Stereo h

Adjustments Geometry - 7 Geometry Before you begin, remove the rear housing. ± Warning: This product contains high voltage and a high-vacuum pict

Adjustments Geometry - 8 overhandling the unit in this condition. Note: The controls on this monitor require a small hex-head plastic tool to make

Adjustments Geometry - 9 Vertical Shift 1 Run Display Service Utility to display the All-White Screen test pattern.2 Using a hex-head plastic adjust

Adjustments Geometry - 10 Horizontal Shift Using a hex-head plastic adjustment tool, adjust the HS (horizontal shift) control until the raster is ce

Adjustments Geometry - 11 Vertical Height 1 Using a hex-head plastic adjustment tool, adjust the VH (vertical height) control until the raster heigh

Adjustments Geometry - 12 Horizontal Width Using a hex-head plastic adjustment tool, adjust the HW (horizontal width) control until the raster width

Adjustments Geometry - 13 Focus 1 Run Display Service Utility to display the Focus test pattern.2 Using a flat-head plastic adjustment tool, adjust

Adjustments Video - 14 Video Before you begin, remove the rear housing. ± Warning: This product contains high voltage and a high-vacuum picture t

Adjustments Video - 15 ± Warning: Because adjustments are made from the rear of the monitor, position a mirror to view the monitor screen. Do not

Adjustments Video - 16 Note: Perform the cutoff adjustment prior to adjusting the white balance. Replacement Note: Perform the cutoff adjustmen

Specifications I/O Devices - 6 I/O Devices Keyboard Supports all Apple Desktop Bus (ADB) keyboards Mouse Apple Desktop Bus Mouse IIMechanical track

Adjustments Video - 17 Cutoff Note: Perform the cutoff and white balance adjustments after the monitor has been on for at least 10 minutes.1 Run

Adjustments Video - 18 3 Using a hex-head plastic adjustment tool, set the SC (sub-contrast) control to maximum (turn clockwise).4 Set the RB (red b

Adjustments Video - 19 5 Using a plastic screwdriver, adjust the screen control on the flyback transformer very slowly until the third darkest bar f

Adjustments Video - 20 White Balance Note: Perform the white balance adjustments after the monitor has been on for at least 10 minutes and the cut

Adjustments Video - 21 3 Press and hold the lower half of the brightness button until the screen brightness is set to minimum. Note: This step ca

Adjustments Video - 22 leftmost (darkest) bar remains completely black.4 If the screen shows a predominant color, start by adjusting the bias contro

Adjustments Video - 23 black and the eight darkest bars are neutral in color (appear to be shades of gray). Note: The darkest bar must remain com

Adjustments Video - 24 until the color of the eight brightest bars is neutralized. 7 Check to see that there is no predominant color in the eight da

Adjustments Video - 25 9 Hold a light meter or photometer against the center of the screen.10 Press the upper half of the brightness button to incre

Adjustments Video - 26 • 30 fL (foot lamberts) on a photometer 11 To reach the correct luminance level, you might need to adjust the SC (sub-contras

Specifications Sound and Video - 7 Sound and Video Sound Generator Records at 11 kHz or 22 kHz sample ratePlays back at 11 kHz or 22 kHz sample rate

Adjustments Convergence - 27 Convergence Before you begin, remove the rear housing. ± Warning: This product contains high voltage and a high-vacu

Adjustments Convergence - 28 Avoid overhandling the unit in this condition. Important: Two types of CRTs can be used in this product, so you can a

Adjustments Convergence - 29 One Control If the CRT yoke has one convergence control,1 Run Display Service Utility to display the Crosshatch I test

Adjustments Convergence - 30 Two Controls If the CRT yoke has two convergence controls,1 Start up the unit and allow it to warm up for at least 15

Adjustments Convergence - 31 top and bottom of the screen.4 Using a flat-head plastic adjustment tool, adjust the control labeled TLV or VR2 for the

Adjustments Geometric Distortion - 32 Geometric Distortion Before you begin, remove the rear housing. ± Warning: This product contains high voltag

Adjustments Geometric Distortion - 33 overhandling the unit in this condition. Note: The raster, when adjusted properly, might not appear to be a

Adjustments Geometric Distortion - 34touch the yoke assembly, the anode wire, or the yoke wires.2 To determine which control to adjust, compare the d

Adjustments Geometric Distortion - 355 If the display is so distorted that you can’t tell which adjustments to make, perform the adjustments in the f

Adjustments Geometric Distortion - 36Apple Technical Support if you’re uncertain if the distortion is within specification. If you can’t correct the

Specifications Sound and Video - 8 Video Display 14-in. diagonal, high-resolution screen (11.5-in. viewable image)Gun Configuration: Horizontal inli

Service Source K Exploded View Macintosh LC 580, Performa 580

Exploded View 1 Exploded ViewSpeakers922-1472Hard Drive661-0068 (350 MB)661-0146 (500 MB)Hard DriveCarrier922-1124Rear Housing922-1615Fan922-1803Ru

Specifications Sound and Video - 9 Video Timings 640 x 480 Resolution @ 66.67 Hz Horizontal Timing Back Porch: 96 dotsH SYNC: 64 dotsFront Porch: 64

Specifications Sound and Video - 10 External Video Connector (Optional) Supports video mirroring on the following external monitors (at product intr

Specifications Physical and Electrical - 11 Physical and Electrical Dimensions Height: 17.9 in. (45.5 cm)Width: 13.5 in. (34.4 cm)Depth: 16.5 in. (4

Specifications Physical and Electrical - 12 Audio Amplifier Amplifier drives a 16-ohm speakerAudio Input Voltage: 0.707 V rmsAudio Input Impedance: 1

Service Source K Basics LC580/Performa 580CD

Specifications Environmental - 13 Environmental Temperature Operating: 50–104° F (10–40° C)Transit: (72 hours): -40° F to +149° F (-40° C to +65° C)

Service Source K Troubleshooting LC 580/Performa 580CD

Troubleshooting General/ - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. B

Troubleshooting First Checklist/ - 2 First Checklist Important: Read this checklist before you replace a module. Avoid needless module replacement

Troubleshooting First Checklist/ - 3 board or CRT failures. By performing the adjustment procedures, you might determine if one or more of the adjus

Troubleshooting Symptom Charts/Audio - 4 Symptom Charts Audio Sound distortion with MPEG board installedReplace MPEG board with modified MPEG board.

Troubleshooting Symptom Charts/Video - 5 Video Screen is black, too dark, or too bright; audio and drive operate1 Adjust contrast button on front b

Troubleshooting Symptom Charts/Video (Continued) - 6 Video (Continued) Screen is completely black except for single vertical or horizontal line d

Troubleshooting Symptom Charts/Video (Continued) - 7 Video (Continued) Out of convergence (color bleeds from text or lines)1 Perform convergence

Troubleshooting Symptom Charts/Video (Continued) - 8 Video (Continued) Screen jitters or flashes1 Refer to “First Checklist” in this chapter. Mov

Basics General Information - 1 General Information Overview These computers are higher-performance versions of the Macintosh LC 575. Each features a

Troubleshooting Symptom Charts/Video (Continued) - 9 Video (Continued) Raster size too short/tall or narrow/wide1 Perform geometry adjustment. Re

Troubleshooting Symptom Charts/Video (Continued) - 10 Video (Continued) Raster tilted or shifted1 Refer to “First Checklist” in this chapter. Mov

Troubleshooting Symptom Charts/Video (Continued) - 11 Video (Continued) Raster not centered 1 Adjust horizontal or vertical shift control. Refer

Troubleshooting Symptom Charts/Floppy Drive - 12 Floppy Drive Audio and video are present, but internal floppy drive does not operate1 Replace bad d

Troubleshooting Symptom Charts/Floppy Drive (Continued) - 13 Floppy Drive (Continued) Does not eject disk 1 Insert opened paper clip into hole be

Troubleshooting Symptom Charts/Hard Drive - 14 Hard Drive Internal or external hard drive does not operate1 Verify that SCSI loopback card is not at

Troubleshooting Symptom Charts/CD-ROM Drive - 15 CD-ROM Drive CD-ROM drive does not accept disc1 Replace disc (if dirty or damaged). 2 Replace CD-RO

Troubleshooting Symptom Charts/CD-ROM Drive (Continued) - 16 CD-ROM Drive (Continued) When an internal and external SCSI device are present, only

Troubleshooting Symptom Charts/CD-ROM Drive (Continued) - 17 CD-ROM Drive (Continued) A Macintosh LC 580 starts up from a backup CD-ROM disc, but

Troubleshooting Symptom Charts/Peripheral - 18 Peripheral Cursor does not move 1 Check mouse connection.2 If mouse was connected to keyboard, connec

Basics General Information - 2 Performa 580CD Performa versions of Macintosh products include specific bundles of software and hardware configurati

Troubleshooting Symptom Charts/Peripheral (Continued) - 19 Peripheral (Continued) Cannot double-click to open application, disk, or server1 Remov

Troubleshooting Symptom Charts/Peripheral (Continued) - 20 Peripheral (Continued) Known-good ImageWriter or ImageWriter II does not print1 Make s

Troubleshooting Symptom Charts/Peripheral (Continued) - 21 Peripheral (Continued) When an internal and external SCSI device are present, only one

Troubleshooting Symptom Charts/Global Village Modem “Busy Serial Port” - 22 Global Village Modem “Busy Serial Port” Using modem gives message: “Can’

Troubleshooting Symptom Charts/Global Village Modem “Busy Serial Port” - 23 Global Village Modem “Busy Serial Port” Resetting modem in TelePort Cont

Troubleshooting Symptom Charts/Miscellaneous - 24 Miscellaneous Clicking, chirping, or thumping sound1 Replace analog board.2 Replace logic board. R

Troubleshooting Symptom Charts/Miscellaneous (Continued) - 25 Miscellaneous (Continued) Screen shows “Sad Macintosh” icon and black vertical line

Service Source K Take Apart LC 580/Performa 580CD

Take Apart Drive Bezel - 1 Drive Bezel No preliminary steps are required before you begin this procedure. Caution: Review ESD precautions in Bulle

Take Apart Drive Bezel - 2 1 Note: Place the unit near the edge of the work table.Insert a flat-blade screwdriver into the opening on the bottom

Basics General Information - 3 Rear View DiagramLC Processor-DirectExpansion CardAccess CoverVideo-InAccess CoverExternal VideoConnector CoverCommun

Take Apart Drive Bezel - 3 2 Push the blade away from you, twisting it to release the interior latch on the bezel.3 Pull the bezel down and remove i

Take Apart Floppy Drive - 4 Floppy Drive Before you begin, remove the drive bezel. Caution: You can access and remove the floppy drive merely by r

Take Apart Floppy Drive - 5 1 Push up the latch and pull out the floppy drive.Floppy LatchDrive

Take Apart Floppy Drive - 6 2 Disconnect the floppy drive cable. Floppy DriveCableFloppy Drive

Take Apart Floppy Drive - 7 Note: Perform the following steps only if you are replacing the floppy drive.3 Note: Notice the placement of the car

Take Apart CD-ROM Drive - 8 CD-ROM Drive Before you begin, remove the drive bezel. Caution: You can access and remove the CD-ROM drive merely by

Take Apart CD-ROM Drive - 9 Note: A CD-ROM drive is optional.1 Using a screwdriver, push up the latch and slide out the CD-ROM drive. CD-ROM Driv

Take Apart CD-ROM Drive - 10 Note: Perform the following steps only if you are replacing the CD-ROM drive.2 Remove the four mounting screws.3 Rem

Take Apart CD-ROM Drive - 11 Note: Retain the carrier, screws, and adapters for installation on the new CD-ROM drive.CarrierAdapter Adapter

Take Apart I/O Door - 12 I/O Door No preliminary steps are required before you begin this procedure. Caution: To prevent ESD damage to components,

Basics General Information - 4 Logic Board DiagramExternal VideoConnector SlotBatteryCommunicationsSlotLC Processor-DirectSlotVideo-InSlotSIMMsSingl

Take Apart I/O Door - 13 1 Place the unit face- down on a clean, soft surface.2 Note: If the optional security screws are installed on the I/O doo

Take Apart Rear Housing - 14 Rear Housing Before you begin, remove the I/O door (if security screws are installed) ± Warning: This product contain

Take Apart Rear Housing - 15 1 Place the unit face-down on a clean, soft surface. Note: If the I/O door is not secured by screws, leave it in plac

Take Apart Rear Housing - 16 Replacement Note: If the feet on the rear housing are worn, replace them.

Take Apart Fan - 17 Fan Before you begin, remove the following:• I/O door (if security screws are installed)• Rear housing ± Warning: This product

Take Apart Fan - 18 ± Warning: Never use a grounding wriststrap until after discharging the CRT.Push the latches outward and remove the fan assemb

Take Apart Analog Board - 19 Analog Board Before you begin, do the following:• Remove the I/O door (if security screws are installed)• Remove the re

Take Apart Analog Board - 20 Review CRT safety in Bulletins/Safety. Unlike other monitors, the LC 580 monitor must be face-down when the CRT is disc

Take Apart Analog Board - 21 3 Disconnect the following analog board cables:• Degauss cable from BP2(Black and white, with white connector)• CRT cab

Take Apart Analog Board - 22 4 Remove the degauss wires from the cable retainer, located at HLD3. Replacement Note: If you are replacing the anal

Service Source K Specifications LC 580/Performa 580CD

Take Apart Analog Board - 23 Note: If gray epoxy secures the CRT/video board, cut and peel it off before removing the board. Remove the CRT/video

Take Apart Analog Board - 24 8 Push in the release tab on one of the analog board guides. 9 Grasp the fence and pull the board up slightly.10 Perfor

Take Apart Analog Board - 25 12 Disconnect the white power connector. Replacement Note: Move aside the loose analog board cables so they do not e

Take Apart Analog Board - 26 13 Disconnect the ribbon cable.14 Slide the analog board out of the chassis assembly. Replacement Note: The ribbon c

Take Apart Analog Board - 27 Replacement Note: Perform the cutoff adjustment whenever you replace the analog board. See “Video” in the Adjustment

Take Apart Logic Board - 28 Logic Board Before you begin, remove the I/O door. Caution: You can access and remove the logic board merely by removi

Take Apart Logic Board - 29 Note: If you are replacing a logic board that has one SIMM slot, replace it with P/N 661-0158. If you are replacing a

Take Apart Logic Board - 30 Replacement Note: If you replace the logic board, make sure the battery cable on the new board is connected.3 Remove t

Take Apart Logic Board - 31 Replacement Note: If the logic board rails are damaged, replace them. You will need to remove the rear housing in orde

Take Apart Hard Drive - 32 Hard Drive Before you begin, remove the I/O door. Caution: You can access and remove the hard drive merely by removing

Specifications Processor - 1 Processor Motorola 68LC040 microprocessor33 MHzBuilt-in memory management unit (MMU)

Take Apart Hard Drive - 331 Place the unit face-down on a clean, soft surface.2 Push the latch and slide out the hard drive.

Take Apart Hard Drive - 343 Disconnect the ribbon connector and the power connector.RibbonConnector Power Connector

Take Apart Hard Drive - 35Note: Perform the following steps only if you are replacing the hard drive.Note: Notice the placement of the carrier and

Take Apart Hard Drive - 36Replacement Caution: Some hard drives have jags near the cable connector that can rub and, therefore, damage the cable. Wh

Take Apart Chassis Harness Assembly - 37Chassis Harness AssemblyBefore you begin, do the following:• Remove the drive bezel• Remove the CD-ROM drive

Take Apart Chassis Harness Assembly - 38• Remove the analog board±Warning: This product contains high voltage and a high-vacuum picture tube. To pre

Take Apart Chassis Harness Assembly - 39Caution: Place the unit face down on a clean, soft surface. This will prevent stress on the front bezel, whi

Take Apart Chassis Harness Assembly - 401 Using a flat-blade screwdriver, press in the bottom of the chassis guide and release its latch. 2 Without

Take Apart Chassis Harness Assembly - 414 Slide your hand from the far side of the assembly to the section closest to you. Locate the plastic tab hid

Take Apart Chassis Harness Assembly - 428 Lift off the chassis harness assembly.Replacement Note: To prevent the speaker cable from getting caught b

Specifications Memory - 2 Memory RAM 4 MB of dynamic RAM on board Expandable to 52 MB (fast-paced mode 80 ns DRAM SIMMs)Two 72-pin SIMM connectors

Take Apart Chassis Harness Assembly - 43Replacement Note: If the analog board guides are damaged, replace them. Before removing them, notice how t

Take Apart Speakers - 44SpeakersBefore you begin, do the following:• Remove the drive bezel• Remove the CD-ROM drive (if installed)• Remove the flopp

Take Apart Speakers - 45• Remove the chassis harness assemblyNote: Perform the following steps on each speaker.1 Remove two screws from the speaker.

Take Apart Speakers - 462 Disconnect the speaker connectors and remove the speaker. Speaker

Take Apart Front Panel Control Board - 47Front Panel Control BoardBefore you begin, do the following:• Remove the drive bezel• Remove the CD-ROM driv

Take Apart Front Panel Control Board - 48• Remove the analog board• Remove the chassis harness assembly1 Remove the screw.2 Lift off the front panel

Take Apart Front Panel Control Board - 493 Note: Notice how the shield is installed—with the lip covering the cable—before removing it.Remove the sh

Take Apart CRT - 50CRTBefore you begin, do the following:• Remove the drive bezel• Remove the CD-ROM drive (if installed)• Remove the floppy drive• R

Take Apart CRT - 51• Remove the chassis harness assembly±Warning: This product contains high voltage and a high-vacuum picture tube. To prevent ser

Take Apart CRT - 522 Unhinge the four metallic ties and remove the degauss coil.Replacement Note: Replace the degauss coil so that its cable hangs o