Macintosh LC 580
The Macintosh LC 580 is an all-in-one 68LC040-based Macintosh that was released in April 1995. Unlike other models in the LC 500 Series, the 580 used a shadow mask CRT instead of a Trinitron.
Specifications
| Spec | Details |
|---|---|
| Release Date | April 1995 |
| Discontinuation Date | August 1995 |
| Processor | Motorola 68LC040 @33MHz FPU: None Bus Speed: 33MHz |
| RAM | 2x 72-pin SIMM Slots - 8MB Standard - 52MB Maximum |
| Hard Disk | 3.5" IDE - 500MB Standard |
| Graphics | 14" Color Shadow Mask CRT @640x480 - 1MB VRAM |
| Audio | Stereo Speakers |
| Internal Drives | Manual-inject 3.5" 1.44MB Floppy Drive 2X CD-ROM Drive |
| Expansion | - 1x LC PDS Slot - 1x Comm Slot - 1x Video Input/Output Slot |
| Networking | Optional internal modem or ethernet |
| Other I/O | - 1x ADB - 2x Serial - 1x DB25 SCSI - 1x DB-15 Video Out (optional expansion card) - 1x Line Out - 1x Mic In - 1x Headphone Out |
| PRAM Battery | 4.5V Alkaline Block Battery |
| Original Mac OS | System 7.5 |
| Maximum Mac OS | Mac OS 8.1 |
Upgrades
CPU Upgrade
PowerPC accelerators were available.
SSD Upgrade
Check our page on IDE SSD replacements for more info.
Resources
 Service Manual |
Capacitor Reference |
|---|
Common Faults & Maintenance
PRAM Battery Leaks
The Macintosh LC 580's Alkaline PRAM battery is highly prone to leaking and should absolutely be removed. The LC 580 does not need a working battery to boot.
Capacitors
The LC 580's logic board has several surface-mount electrolytic capacitors on it that leak corrosive fluid with age. These must be replaced for reliable operation.
The LC 580's analog board also sometimes needs recapping.
Brittle Plastic
The 580's case plastics are now extremely brittle. They will not survive shipping 90% of the time, even if packed very well. Handle with extreme care at all times.
The plastics also yellow with age.
Page last updated (MM/DD/YYYY): 03/11/2025
Update Reason: page rewritten
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