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Macintosh Quadra 800

The Macintosh Quadra 800 is a high-end 68040-powered desktop tower that was released in February 1993.


Specifications

Spec Details
Released/Discontinued February 1993/March 1994
CPU Motorola 68040 @33MHz
RAM Type: 4x 72-pin SIMM Slots
Standard: 16MB
Maximum: 136MB
Storage 3.5" SCSI
Standard: 230 or 500MB
Graphics 512KB or 1MB VRAM
Audio Internal Speaker
Media Drives Auto-inject 3.5" 1.44MB Floppy Drive
2x CD-ROM Drive (Optional)
Expansion - 3x NuBus Slots
- 1x 040 PDS Slot
Networking AAUI Ethernet
Other I/O - 2x Apple Desktop Bus
- 2x Serial
- 1x DB25 SCSI
- 1x DB15 Video Out
- 1x Line In
- 1x Line Out
PRAM Battery 1/2AA Lithium
Firmware Old World
Minimum Mac OS System Software 7.1
Maximum Mac OS Mac OS 8.1

Resources

Link Details
Apple Macintosh Quadra 800 Service Manual
Apple Macintosh Quadra 800 Logic Board Schematic

Upgrades

SSD Upgrade

Check our page on SCSI SSD replacements for more info.


Common Faults & Maintenance

PRAM Battery Leaks

The 1/2AA Lithium PRAM battery in the 800 is very prone to leaking and should be removed. It does not need to be replaced on this model for the computer to operate.

Capacitors

The 800's logic board uses all solid-state capacitors and shouldn't have to be recapped. The power supply does often need recapping.

Brittle Plastic

The plastic parts on the 800 are extremely brittle, and unfortunately, plastic clips and retention pieces were used liberally inside the case. As such, it's very difficult to take an 800 apart without damage. The front drive bezels are another part that frequently break. This plastic also yellows.