Please consider a donation to the Higher Intellect project. See https://preterhuman.net/donate.php or the Donate to Higher Intellect page for more info. |
Difference between revisions of "Macintosh LC 575"
Line 7: | Line 7: | ||
=General Information= | =General Information= | ||
− | The LC 575 logic board includes a [[Motorola 68LC040 | + | The LC 575 logic board includes a [[Motorola 68LC040]] processor, an additional communications slot, and a new hook-and-loop attached battery. |
===Memory=== | ===Memory=== | ||
Line 14: | Line 14: | ||
===Video=== | ===Video=== | ||
512K of VRAM on board (displays up to 256 colors or 8-bit color). Expandable to 1 MB (displays up to 32,000 colors or 16-bit color) | 512K of VRAM on board (displays up to 256 colors or 8-bit color). Expandable to 1 MB (displays up to 32,000 colors or 16-bit color) | ||
− | |||
=Notes= | =Notes= |
Revision as of 18:42, 19 October 2019
Powered by the Motorola 68LC040 processor at 33MHz but you can easily swap in the full Motorola 68040 with the FPU.
The LC 575 board will also work in the Macintosh Color Classic and is referred to as the "mystic" upgrade.
General Information
The LC 575 logic board includes a Motorola 68LC040 processor, an additional communications slot, and a new hook-and-loop attached battery.
Memory
4 MB of dynamic RAM on board. Expandable to 36 MB (100 ns or faster SIMMs) 72-pin DRAM SIMM connector.
Video
512K of VRAM on board (displays up to 256 colors or 8-bit color). Expandable to 1 MB (displays up to 32,000 colors or 16-bit color)
Notes
- You can exchange the chassis harness assembly of the LC 520 or LC 550 with the newer chassis harness assembly of the LC 575. The newer chassis harness assembly requires the manual-inject floppy drive and caddyless CD ROM drive.
Troubleshooting/Repair
Capacitor replacement
The SMD capacitors on the logic board will most likely have already started leaking electrolyte out the bottom, and failing to replace them in a timely manner will result in further leakage with possible damage to nearby components. See below list of capacitors to replace:
- 10 x 47uf 16V
- 2 x 100uf 6.3V