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Macintosh Performa 405

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Macintosh Performa 405
Macintosh Performa 400, which uses the same case as the 405 with a different badge. Photo: Akbkuku, Wikimedia Commons, CC BY 4.0
Specifications
ManufacturerApple Computer, Inc.
TypeDesktop personal computer
ReleasedApril 12, 1993
DiscontinuedNovember 1, 1993
Intro priceUS$1,300
CPUMotorola 68030 at 16 MHz
Memory4 MB on board, expandable to 10 MB
Storage80 MB SCSI hard drive; 1.4 MB SuperDrive
DisplayExternal; 256 KB VRAM SIMM
Sound8-bit mono
Dimensions7.7 × 31.0 × 38.2 cm (3.0 × 12.2 × 15.0 in)
Weight4.0 kg (8.8 lb)
OS / FirmwareSystem 7.0.1P – Mac OS 7.6.1
PredecessorPerforma 400
SuccessorPerforma 410
Model no.M1700

The Macintosh Performa 405 is a desktop Macintosh sold by Apple through consumer retail shops. Apple gives its introduction date as April 12, 1993.[1] It is the Macintosh LC II under a Performa name, with bundled software; the Performa 400, 405, 410 and 430 are the same hardware.[2]

EveryMac gives the US price as US$1,300 and the discontinuation date as November 1, 1993.[3] Apple order numbers: M1719LL/A and M1742LL/A, which differed only in the software bundle.[3]

Specifications

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Apple's figures
Item Figure
Processor Motorola 68030 at 16 MHz; 16-bit data path; no FPU socket
RAM 4 MB on board; two 30-pin SIMM sockets, filled in pairs with 100 ns 1, 2 or 4 MB SIMMs; 10 MB maximum
ROM 512K
VRAM One VRAM SIMM socket: 256K gives 512 × 384 at 8-bit and 640 × 480 at 4-bit; 512K gives 16-bit and 8-bit
Floppy drive Apple SuperDrive (auto-inject)
Hard drive at introduction 80 MB
Ports One ADB, two serial (printer and modem), SCSI DB-25, DB-15 video, sound in and out
Expansion One 96-pin LC processor-direct slot
Electrical 100–240 VAC, 50–60 Hz, automatically configured; 50 W maximum excluding monitor

Sources: Apple's technical specifications and the Performa 400 Series Service Source, pp. 3–14.[1][4] Apple's technical specifications give the input range as 90–240 V; the Service Source gives 100–240 VAC.

The machine accepts 12 MB (4 MB on board plus two 4 MB SIMMs) but addresses only 10 MB. Apple explains that with 4 MB SIMMs in both sockets the lower 2 MB of the on-board RAM cannot be addressed.[1][4]

EveryMac says the 405 shipped with a 256 KB VRAM SIMM, where the 400 and 410 had 512 KB, and describes it as bundled with a 12-inch Apple colour monitor; Apple's manual lists the Performa Display.[3][4]

The PRAM battery is a 3.6 V lithium cell, Apple part 742-0011; Apple says to replace it below 3.0 V. The power supply is part 661-1733, shared with the whole LC family.[1][4]

Known faults

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  • Leaking surface-mount electrolytic capacitors on the logic board and in the power supply. The LC II board list is on Macintosh LC II Capacitor Replacement Guide.
  • A flat PRAM battery: Apple's charts for this family put "Check batteries" first for "No video" and in the no-power entries.[4]
  • The 10 MB ceiling above is normal behaviour, not a memory fault.

See Macintosh Performa 405 Troubleshooting and Macintosh LC II Troubleshooting.

Service documentation

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Apple covers the Performa 405 in the Macintosh Performa 400 Series Service Source, and the same board under its LC II name in the Macintosh LC Series/Quadra 605 Service Source.[4]

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References

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  1. ↑ 1.0 1.1 1.2 1.3 Apple, "Macintosh Performa 405: Technical Specifications".
  2. ↑ Low End Mac, "Apple's Performa Line, 1992 to 1997".
  3. ↑ 3.0 3.1 3.2 EveryMac, "Macintosh Performa 405 Specs".
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 Apple Computer, Service Source: Macintosh Performa 400 Series (1995), File:Performa 400 series.pdf; see Macintosh Performa 400 Series Service Source. Page numbers are PDF pages.
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