Centris 650/Quadra 650 Service Source
The Centris 650/Quadra 650 volume of Apple's Service Source is an 81-page service manual covering the Macintosh Centris 650 and Macintosh Quadra 650, which share a case and logic board design and differ in processor clock. The PDF's creation date is 21 October 1995.[1]
Specifications
[edit | edit source]| Item | Centris 650 | Quadra 650 |
|---|---|---|
| CPU | Motorola 68040 at 25 MHz, built-in MMU | Motorola 68040 at 33 MHz, built-in MMU |
| Coprocessor | Optional FPU | |
| RAM | 4 or 8 MB, expandable to 132 MB (72-pin SIMMs) | |
| ROM | 1 MB | |
| PRAM | 256 bytes | |
| VRAM | 512K, expandable to 1 MB | |
| Clock/calendar | CMOS custom chip with long-life lithium battery | |
| Storage | 1.4 MB SuperDrive; internal SCSI hard drive, 80 to 500 MB; optional internal 5.25-inch CD-ROM | |
| Expansion | Three NuBus slots and one processor-direct slot | |
| I/O | SCSI (DB-25), two ADB, two RS-232/RS-422 serial (mini DIN-8), on-board Ethernet, DB-15 video, stereo sound out, mono sound in | |
| ADB power | 500 mA maximum for all ADB devices | |
| Line voltage | 100-240 V AC, 50-60 Hz | |
| Power | 112 W maximum, not including display power | |
| Size | 152 mm H × 330 mm W × 419 mm D (6.0 × 13.0 × 16.5 in) | |
| Weight | 11.3 kg (25 lb), varying with the internal devices fitted | |
| Operating environment | 10-40 °C; 10-90% RH non-condensing; up to 3,048 m (10,000 ft) | |
Contents
[edit | edit source]- Basics (PDF p. 3): overview
- Specifications (PDF pp. 5-15): processors, memory, disk storage, I/O interfaces, I/O devices, sound and video, electrical, physical, environmental
- Troubleshooting (PDF pp. 17-30): general; symptom charts for error chords, system, video, floppy drive, hard drive, CD-ROM drive and peripherals
- Take Apart (PDF pp. 32-58): top cover, power supply, drive chassis, floppy drive, hard drive, CD-ROM drive, speaker, logic board
- Additional Procedures (PDF pp. 60-66): battery verification, battery replacement, reset/interrupt switch
- Upgrades (PDF pp. 68-79): expansion cards, CD-ROM drive upgrade, Power Macintosh card, Power Macintosh upgrade
- Exploded View (PDF p. 81)
What it settles
[edit | edit source]Battery: with the top cover off, measure the lithium battery on the 10 V DC range, positive probe to the end marked "+" on the logic board. Replace it if it reads below 3.2 V.[3]
Symptom charts: for a one-part error chord at startup, Apple's order is to disconnect the hard drive power and data cables and reboot, then disconnect the floppy drive cable and reboot, then replace the logic board, keeping the customer's SIMMs.[4] A system that shuts down intermittently may be tripping the thermal protection: check the air vents are clear, and the system should recover after 30 to 40 minutes. Next come the power cord, the battery, the power supply and the logic board. Clicking, chirping or thumping calls for the power supply, then the logic board.[5]
Upgrades: both models accept the Power Macintosh card in the processor-direct slot, and both could be upgraded to a Power Macintosh 7100/66 or 7100/66AV.[6]
The exploded view gives service part numbers, including the power supply (661-0758), floppy drive (661-0121 or 661-0474), top cover (922-0405), bottom case (922-0406), speaker (922-0055) and internal chassis (922-0058). Logic board and hard drive numbers are referred to a separate parts list.[7]
What this manual does not contain
[edit | edit source]It is module-level. There is no schematic, no component values or capacitor list, no supply-rail voltages or tolerances and no fuse rating.[1] Power supply ratings and expansion-slot power budgets are in Apple's Macintosh Centris 610 Centris 650 and Quadra 800 Developer Note.
Pages that cite this document
[edit | edit source]- Macintosh Centris 650
- Macintosh Centris 650 General Maintenance
- Macintosh Centris 650 Troubleshooting
- Macintosh Quadra 650
Download: Quadra.centris 650.pdf
References
[edit | edit source]- ↑ 1.0 1.1 Apple Computer, Inc., Centris 650/Quadra 650 (Service Source), 81 pp. Hosted as File:Quadra.centris 650.pdf.
- ↑ Centris 650/Quadra 650 Service Source, Specifications, pp. 1-11 (PDF pp. 5-15).
- ↑ Centris 650/Quadra 650 Service Source, Additional Procedures, Battery Verification and Battery Replacement, pp. 1-5 (PDF pp. 60-64).
- ↑ Centris 650/Quadra 650 Service Source, Troubleshooting, Symptom Charts: Error Chords, p. 2 (PDF p. 18).
- ↑ Centris 650/Quadra 650 Service Source, Troubleshooting, Symptom Charts: System, pp. 3-4 (PDF pp. 19-20).
- ↑ Centris 650/Quadra 650 Service Source, Upgrades, Power Macintosh Card and Power Macintosh Upgrade, pp. 9-12 (PDF pp. 76-79).
- ↑ Centris 650/Quadra 650 Service Source, Exploded View (PDF p. 81).