Jump to content

Power Macintosh 9500

From RetroTechCollection
Power Macintosh 9500
Power Macintosh 9500/132. Photo: Thomas Kaiser, Wikimedia Commons, CC BY-SA 3.0
Specifications
ManufacturerApple Computer, Inc.
TypeTower personal computer
Released1 May 1995 (9500/120, 9500/132, Apple); April 1996 (9500/150); August 1996 (9500/180MP, 9500/200)
Intro priceUS$5,000 (9500/120, Low End Mac)
CPUPowerPC 604 at 120, 132 or 150 MHz, 604e at 200 MHz, or two 604e at 180 MHz (9500/180MP), on a processor card; 40, 44 or 50 MHz bus
Memory16 or 32 MB; twelve 168-pin DIMM slots, interleaved in pairs; 768 MB (Apple specification page) or 1.5 GB (Service Source)
Storage1 or 2 GB SCSI hard drive
Display—
Sound16-bit stereo input and output
GraphicsNone on the logic board; Apple Accelerated Graphics card (2 MB VRAM) in a PCI slot on most models
ROM4 MB
Media1.4 MB SuperDrive; AppleCD 600i (4×) or 1200i (8×)
Ports / interfaceADB, two GeoPort serial, SCSI (DB-25), AAUI and 10BASE-T Ethernet, sound in and out
ExpansionSix PCI slots; processor card slot; 512 KB L2 cache soldered to the board
Power100–240 V AC; 225 W DC; 340 W continuous and 520 W peak input
Dimensions430 × 196 × 400 mm (16.9 × 7.75 × 15.75 in)
Weight28 lb (12.7 kg)
OS / FirmwareSystem 7.5.2 (9500/120, 9500/132), 7.5.3 (9500/150) or 7.5.3 Revision 2 (9500/180MP, 9500/200); supported to Mac OS 9
SuccessorPower Macintosh 9600

The Power Macintosh 9500 is a tower Macintosh with a PowerPC 604 processor card, six PCI slots and twelve DIMM slots, and no video circuit on the logic board. Apple's specification pages date the 9500/120 and 9500/132 to 1 May 1995.[1][2] Wikipedia gives 19 June 1995, and dates the 9500/150 to 22 April 1996 and the 9500/180MP and 9500/200 to 7 August 1996.[3] It was Apple's first Macintosh with PCI slots and 168-pin DIMMs, and the Power Macintosh 9600 replaced it in 1997.[3] It was also sold in Europe and Asia as the 9515/132.[3]

Models

[edit | edit source]
Power Macintosh 9500 models (Service Source)
Model Processor card RAM Hard drive CD-ROM Video card
9500/120 604, 120 MHz 16 MB 1 GB AppleCD 600i Apple Accelerated Graphics, 2 MB
9500/132 604, 132 MHz 16 MB 2 GB AppleCD 600i None
9500/150 604, 150 MHz 16 or 32 MB 2 GB AppleCD 600i Apple Accelerated Graphics
9500/180MP Two 604e, 180 MHz 16 or 32 MB 2 GB AppleCD 1200i Apple Accelerated Graphics
9500/200 604e, 200 MHz 16 or 32 MB 2 GB AppleCD 1200i Apple Accelerated Graphics

Configurations from the Service Source (pp. 5–6, 31, 33).[4] The 9500/132 shipped without video and needed a third-party card (SS pp. 31, 33).[4] The processor bus runs at one third of the processor clock on the 120 and 132 MHz models (40 or 44 MHz) and at 50 MHz on the 9500/150, and the 9500/150's card is an ATI mach64 (developer notes).[5][6]

Hardware

[edit | edit source]

Processor card

[edit | edit source]

The processor is on a plug-in card; the logic board will not run without one (SS pp. 8, 44).[4] The 9500/180MP card carries two 180 MHz 604e processors; software has to be written for multiprocessing to use the second one (SS p. 8).[4] Owners report that the MP card is labelled for the 9500 only but runs in an 8600, and that Mac OS X installed with XPostFacto recognises only one of its processors while Linux uses both.[7][8]

Memory

[edit | edit source]

The twelve DIMM slots take 5 V, 168-pin, 70 ns fast-page DIMMs. Apple's order is A6 first, then B6, then A5 and B5, and so on, leaving A1 and B1 until last; interleaving needs matching pairs in paired slots (SS pp. 12–14, 43). DIMMs need a firm push: Apple describes a "double click" as they seat (pp. 11, 103).[4] Apple's figures for the maximum differ: 1536 MB in the Service Source (p. 29), 768 MB on the specification page, and in the developer note 1.5 GB with 128 MB DIMMs, of which the Mac OS of the time could use 1 GB (dev note pp. 5, 26–27).[4][1][5] The 512 KB level-2 cache is soldered to the logic board (SS p. 29).[4]

Video and expansion

[edit | edit source]

There is no video circuit on the logic board. Most models came with the Apple Accelerated Graphics card, which has 2 MB of VRAM and accepts a third-party VRAM module for 4 MB (SS pp. 4, 33, 94–95).[4] The six PCI slots are served by two Bandit bridge chips, three slots each, and share 90 W of power at 5 V and 3.3 V (dev note p. 33).[5] The internal SCSI bus is Fast SCSI at up to 10 MB/s; the external bus runs at 5 MB/s (SS pp. 4, 21).[4]

Power and cooling

[edit | edit source]

The supply accepts 100–240 V AC automatically and delivers 225 W of DC; input is 340 W maximum continuous and 520 W peak (SS p. 35).[4] Its service part, 661-0923, is the same as the Power Macintosh 8500's (SS p. 111).[4] A 10-pin cable carries 3.3 V for the processor card and a 22-pin cable 5 V and ±12 V for the logic board (p. 78).[4] A separate fan clips to the chassis beside the cards and plugs into the logic board (pp. 104–107).[4]

Known faults

[edit | edit source]

From Apple's symptom charts and service notes:[4]

  • Eight-part error chord (death chimes): check that DRAM is fitted from A6 and B6 down, with A1 and B1 left until last, before testing DIMMs one at a time (p. 43).
  • After a logic board replacement, make sure the LED cable does not obstruct the power actuator (pp. 41–60).
  • Intermittent shutdowns: clear the vents and allow 30 to 40 minutes; check the fan is plugged in and turning (p. 46).
  • 180 MHz and faster processor cards cause floppy initialisation errors or 1.4 MB disks showing only 1 MB free; system software 7.5.4 or the Power Mac Format Patch cures it (p. 63).
  • AppleCD 600i drives stutter on CD+ and CD-R discs or fail to mount a disc (p. 61).

Apple warns never to run the computer with the top housing removed (p. 65).[4]

An owner recalls 9500s in 1999 that showed no sign of life and were traced to a cache problem; the 9500's cache is soldered to the board.[9] The clock battery is a 3.6 V lithium cell; Apple's service part is 922-1262 with cover 520-0344 (SS p. 111).[1][4] A leaking cell corrodes the board; see Battery Explosion, Capacitor or Corrosion Damage.

Service parts

[edit | edit source]
Selected parts from Apple's exploded view (SS p. 111)
Part Apple part number
Logic board 661-0924, 661-1156
Processor card 661-0925, 661-1002, 661-1146, 661-1223, 661-1280
Video card 661-0926
Power supply 661-0923
Fan 922-1525
Battery 922-1262
DRAM DIMM 661-0918, 661-0919
Hard drive 661-0180, 661-0228, 661-1076
CD-ROM drive 661-0913, 661-1240

Maintenance and repair

[edit | edit source]

No capacitor list has been published for the 9500 logic board. Apple's schematic for the first 9600 board, which the revision notes describe as the production 9500 design with new power supply connectors, is on Power Macintosh 9600 Logic Board Schematic.[10]

Documentation

[edit | edit source]

[edit | edit source]

References

[edit | edit source]
  1. ↑ 1.0 1.1 1.2 Apple, "Power Macintosh 9500/120: Technical Specifications". 604 at 120 MHz; data path 64-bit, 40 MHz; L2 512K; 6 PCI; video none; 225 max watts; battery type 3.6V lithium; introduced 5/1/1995; discontinued 5/18/1996; form factor PM 9500; Gestalt ID 67; twelve 168-pin DIMM slots, 16–768 MB, 70 ns; original system software 7.5.2; 4× CD; 1 GB; 28 lb; 16.9 × 7.7 × 15.75 in; supported to Mac OS 9.
  2. ↑ Apple, "Power Macintosh 9500/132: Technical Specifications". 604 at 132 MHz; data path 64-bit, 44 MHz; introduced 5/1/1995; discontinued 7/13/1996; 2 GB.
  3. ↑ 3.0 3.1 3.2 Wikipedia, "Power Macintosh 9500": introduced 19 June 1995 (9500/120, 9500/132); 9515/132 2 October 1995; 9500/150 22 April 1996; 9500/180MP and 9500/200 7 August 1996; uses a taller version of the Quadra 800 and 8100 case; the "Tsunami" logic board design was reused in early 9600 models and in Apple Network Servers.
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 Apple Computer, Service Source: Power Macintosh 9500 Series (1996), File:Powermac_9500_series.pdf; see Power Macintosh 9500 Series Service Source. Page numbers are PDF pages.
  5. ↑ 5.0 5.1 5.2 Apple Computer, Developer Note: Power Macintosh 9500 Computers (1995), printed page numbers. Hosted as File:Power Macintosh 9500 Computers Developer Note (1995).pdf; see Power Macintosh 9500 Computers Developer Note.
  6. ↑ Apple Computer, Developer Note: Improved Power Macintosh Computers (23 April 1996): 9500/150 at 150 MHz, bus 50 MHz (Table 1-1, p. 3); 512 KB L2, 16 MB, 2 GB; includes an accelerated display card, the ATI mach64 (Table 1-2 and note, p. 4). Hosted as File:Improved Power Macintosh Computers Developer Note (1996).pdf; see Improved Power Macintosh Computers Developer Note.
  7. ↑ 68k Macintosh Liberation Army forum, "Insight on the 9500 180MP card" (2011): the card is marked for the 9500 only; one owner runs it in an 8600.
  8. ↑ 68k Macintosh Liberation Army forum, "Did Apple Ever Support Multiprocessor Macintosh PowerPC Systems During The Early PowerPC Era?" (2019–2022): Linux on a 9500/180MP uses both processors; Mac OS X under XPostFacto recognised only one.
  9. ↑ 68k Macintosh Liberation Army forum, "dead 8500" (2022), post by Alumamac: two 9500s that showed no signs of life were traced to a cache issue.
  10. ↑ Apple Computer, SCHEM, PCB, MN LG BD, 9600 (PCB 820-0865-A), sheet 1 revision notes: "Initial V1 Montana schematic based on production 9500"; power supply connectors J39 and J36 changed. Hosted as File:Power Macintosh 9600 logic board schematic (820-0865-A).pdf.