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Macintosh Quadra 900/950/ AWS 95 Service Source

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The Macintosh Quadra 900/950/AWS 95 Service Source is Apple's 117-page module-level service manual for the Macintosh Quadra 900, the Macintosh Quadra 950 and the Apple Workgroup Server 95. The PDF was distilled on 14 November 1995 from FrameMaker.

Contents

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PDF page numbers.

  • Basics: Overview (p. 3)
  • Specifications: Processor (p. 5), Memory (pp. 6–7), Disk Storage (pp. 8–9), I/O Interfaces (pp. 10–12), Sound and Video (p. 13), Electrical (p. 14), Physical (p. 15), Environmental (p. 16)
  • Troubleshooting (pp. 18–34), all under the running head "General": error chords (p. 19), system problems (pp. 20–22), video (pp. 23–25), floppy drive (pp. 26–28), hard drive (pp. 29–30), peripherals (pp. 31–33), miscellaneous (p. 34)
  • Take Apart: Cover (p. 36), Drive Shelf (p. 37), Floppy Drive (p. 41), Hard Drive (p. 44), DDS-DC Tape Drive (p. 46), Speaker Bezel and Speaker (p. 49), Power Supply (p. 52), Fan (p. 56), Workgroup Server PDS Card (p. 58), Logic Board (p. 61)
  • Upgrades: Expansion Cards (p. 65), CD-ROM Upgrade (p. 67), Quadra 950 Upgrade (p. 72), AWS 95 Upgrade (p. 77), AWS Cache Upgrade (p. 82), Tape Drive Upgrade (p. 85), Five-Drive Upgrade (p. 90), Power Macintosh Upgrade Card (p. 108), WS 9150 Upgrade (p. 109)
  • Additional Procedures: Battery Verification (p. 111), Battery Replacement (p. 113)
  • Exploded View (p. 117)

What it settles

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  • Processor: 68040 with PMMU, FPU and 8 KB cache; 25 MHz in the Quadra 900, 33 MHz in the Quadra 950 and AWS 95 (p. 5).
  • Memory: Quadra 900 4 MB and Quadra 950 8 MB standard, both expandable to 256 MB with 80 ns SIMMs; AWS 95 16, 32 or 48 MB of parity RAM in 9-bit SIMMs; ROM 1 MB in two 150 ns 256K × 16 chips; VRAM 1 MB, expandable to 2 MB (pp. 6–7).
  • Power: 100–240 V AC self-configuring supply, 50–60 Hz, 303 W maximum excluding the monitor (p. 14).
  • Environment: 10–40 °C operating, −40 to 47 °C storage, 20–80 % humidity, 0–3,048 m (p. 16).
  • PRAM battery: replace below 3.2 V (p. 112).
  • Error chords: a one-part chord points at the hard disk, floppy drive or logic board; a two-part chord at the SIMMs (p. 19).
  • Thermal shutdown: blocked vents can trigger the thermal protection circuit, which recovers after 30 to 40 minutes (p. 21).
  • Internal SCSI: internal hard disks must not be terminated (p. 30).
  • A Quadra 900 upgraded to a 950 with Apple's logic board kit still reports itself as a 900 until the system software is reinstalled (p. 73).

These are cited on Macintosh Quadra 950 and Macintosh Quadra 900 Troubleshooting.

What this manual does not contain

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  • No schematics, no component values, and no part numbers: the exploded view (p. 117) names the parts but gives no numbers.
  • No adjustments chapter and no power supply output limits.
  • No I/O Devices section in the specifications.
  • No SIMM verification procedure: the error-chord and video charts refer to Apple's separate memory manual.

Two figures in the specifications need care. The height is printed as "16.8 in. (473 mm)"; 473 mm is 18.6 in, which is the height EveryMac and Low End Mac give (p. 15). The manual lists one ADB port and an "AUI-15" Ethernet connector (pp. 10, 12), where Low End Mac gives two ADB ports and AAUI-15.

Pages that cite this document

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Download: Quadra_900.950.ws_95.pdf (1017 KB)

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