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Macintosh LC 580/Performa 580CD Service Source

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The Macintosh LC 580/Performa 580CD Service Source is Apple's 151-page service manual for the Macintosh LC 580 and the Performa 580CD. The file is Apple's own PDF (FrameMaker, Acrobat Distiller 2.1), produced on 4 November 1995, not a scan. Apple describes the machines as higher-performance versions of the Macintosh LC 575, with a 33 MHz 68LC040 logic board, 4 MB of soldered RAM and two 72-pin SIMM slots. The manual works at module level: specifications, symptom charts, take-apart, battery procedures, display adjustments and an exploded view with part numbers. Page numbers below are the PDF's.

The machines contain a CRT and a mains-powered analog board. Apple's procedures discharge the CRT before the analog board is touched, with the unit face down; see CRT Discharge Procedure.

Specifications as printed

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Specifications (pp. 8-20)
Item As printed
Processor Motorola 68LC040, 33 MHz, built-in MMU
RAM 4 MB on board, expandable to 52 MB with two 72-pin SIMMs (fast-page-mode, 80 ns)
ROM / PRAM 1 MB ROM; 256 bytes PRAM, long-life lithium battery
VRAM 1 MB of DRAM soldered to the logic board; thousands of colours (16-bit)
Drives 1.4 MB SuperDrive, manual-inject; internal IDE hard disk; optional internal CD-ROM drive
I/O Two serial (modem port 9-pin, printer port 8-pin mini-DIN); SCSI, up to six external devices; one ADB port, three devices recommended, 500 mA maximum
Slots 114-pin processor-direct slot; communications slot for a 112-pin fax modem or Ethernet card; 60-pin video-in slot; 22-pin external video connector slot for a second monitor
Sound Mono input; 8-bit stereo output and headphone jack; records and plays at 11 or 22 kHz; internal amplifier drives 16-ohm speakers, 250 mW at 1 kHz
Display 14-inch, 11.5-inch viewable; 0.28 mm dot-pitch shadow mask; horizontal in-line guns; 640 × 480 at 66.67 Hz; active raster 9.5 × 7.3 in (240 × 180 mm); white point 9300 K; shipping brightness 30 ± 5 fL
Power 90-264 V rms, automatically configured (100-240 V AC); 50-60 Hz ± 3 Hz; 2.0 A and 120 W maximum; 40 A peak inrush
Physical 17.9 × 13.5 × 16.5 in (45.5 × 34.4 × 42.0 cm); 40.5 lb (18.4 kg)
Environment Operating 10-40 °C; transit −40 to 65 °C (72 hours); storage −40 to 47 °C (6 months); 20-95 % RH; 0-10,000 ft

Contents

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  • Basics: General Information, rear view and logic board diagrams (pp. 3-6)
  • Specifications: Processor (p. 8), Memory (p. 9), Disk Storage (p. 10), I/O Interfaces (p. 11), I/O Devices (p. 13), Sound and Video (p. 14), Physical and Electrical (p. 18), Environmental (p. 20)
  • Troubleshooting: General (p. 22); First Checklist (p. 23); symptom charts for Audio (p. 25), Video (p. 26), Floppy Drive (p. 33), Hard Drive (p. 35), CD-ROM Drive (p. 36), Peripheral (p. 39), Global Village Modem "Busy Serial Port" (p. 43), Miscellaneous (p. 45)
  • Take Apart: Drive Bezel (p. 48), Floppy Drive (p. 51), CD-ROM Drive (p. 55), I/O Door (p. 59), Rear Housing (p. 61), Fan (p. 64), Analog Board (p. 66), Logic Board (p. 75), Hard Drive (p. 79), Chassis Harness Assembly (p. 84), Speakers (p. 91), Front Panel Control Board (p. 94), CRT (p. 97), Internal Microphone (p. 103), Front Bezel (p. 106)
  • Additional Procedures: Battery Verification (p. 109), Battery Replacement (p. 111)
  • Adjustments: Light Meter Setup (p. 114), Geometry (p. 120), Video (p. 127), Convergence (p. 140), Geometric Distortion (p. 145)
  • Exploded View (p. 151)

What it settles

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  • Display: the LC 580 uses a 0.28 mm dot-pitch shadow-mask CRT with an 11.5-inch viewable image, not the Trinitron of the LC 520, 550 and 575 (p. 15).
  • Power: 120 W maximum for all line and load conditions, 90-264 V rms (p. 18).
  • First Checklist: raster distortion, jitter and faint lines can come from magnetised metal objects, other electronics or fluorescent lights; a misadjusted screen can mimic analog board or CRT failure; CRTs rarely fail (pp. 23-24).
  • MPEG card: sound distortion with the MPEG board installed is cured by a modified board with a jumper from U5 pin 2 to D1 pin 1 (p. 25).
  • CD-ROM: early LC 580s had the AppleCD 300i Plus and later ones the AppleCD 600i; backup CDs for one do not work in the other (300i: 691-0462-B or 691-3305-A; 600i: 691-0793-A). PC Exchange shows CR-8004x for a 300i and CR-8005x for a 600i. The internal CD-ROM was set to SCSI ID 3 at the factory (pp. 36-38).
  • Global Village modem: the TelePort control panel is corrupted if a Performa 580CD restarts with AppleTalk inactive or LocalTalk not selected; the fix is the GlobalFax 2.5.2P update or a clean copy of the control panel from the backup CD (pp. 43-44).
  • Rear housing: five Torx screws; lay the unit face down on a soft surface and open it with a case cracker (p. 62).
  • CRT discharge: unlike other monitors, the LC 580 must be face down when the CRT is discharged; never wear a wrist strap until it is discharged; pull the CRT/video board straight off the neck, cutting away any grey epoxy first (pp. 67-70).
  • Analog board: slides out on two plastic guides; reconnect the ribbon cable and power connector before sliding it fully home, and push the power cables into the EMI shielding. Do the cutoff adjustment after replacing it (pp. 70-74).
  • Logic board: comes out of the back on a handle after the I/O door is removed. Replace a board with one SIMM slot with 661-0158 and a board with two SIMM slots with 661-1114; check that the battery cable is connected on the new board (pp. 75-77).
  • Battery: on a connector and a hook-and-loop base; replace below 3.0 V on the 10 V DC range (pp. 109-112).
  • Adjustments: a short plastic hex tool, never metal; adjustments are made from the rear, so watch the screen in a mirror and do not reach round the machine (pp. 121, 128).
  • Exploded-view part numbers (p. 151): logic board 661-1114 (661-1115 international); analog board 661-0940; CRT 661-0945 (northern hemisphere), 661-0947 (equatorial/polar); hard disk 661-0068 (350 MB), 661-0146 (500 MB); CD-ROM drive 661-0913 (600i); floppy drive 661-0121; fan 922-1803; rear housing 922-1615; front bezel 922-1474; control board 922-1459; speakers 922-1472; chassis assembly 922-1460.

What this manual does not contain

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No schematic and no component values; parts are listed at module level only. There are no power-supply output voltages or adjustments, and the Adjustments chapter has no yoke procedure. The Bulletins/Safety chapter that the procedures refer to is not in this file.

Pages that cite this document

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Download: Lc_580.performa_580cd.pdf (1.5 MB)

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