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LaserWriter 16/600 PS Service Source

From RetroTechCollection

The LaserWriter 16/600 PS volume of Apple's Service Source is a 316-page service manual for the Apple LaserWriter 16/600 PS. The PDF was made on 26 October 1995.[1] It follows the layout of the LaserWriter Pro 600/630 Service Source, whose case and much of whose engine design the 16/600 PS shares. Its opening page lists what changed: a new rear housing in which the I/O controller is easier and the DC controller harder to reach, new I/O connectivity procedures, fax card and internal hard disk options, a faster engine whose modules and feeders are not interchangeable with the Pro 600/630, two extra fans, new printer utilities and a new diagnostic.[2]

Contents

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  • Basics (PDF pp. 3-44): read me first, printer utilities for Macintosh, Windows, NetWare and UNIX, paper path, mechanical drive theory, sensing system theory, test and configuration pages, configuration switch, safety
  • Specifications (PDF pp. 46-58): engine, I/O board, fax card, sheet feeder, envelope feeder, paper
  • Troubleshooting (PDF pp. 60-134): power-on self test (POST), extended POST (EPOST) and its loopback connector, maintaining I/O connectivity, troubleshooting tips, C208 capacitor discharge, expansion post connectors, toner cartridge compatibility, circuit board diagrams, wiring diagram, J136 and J743 locators, flowcharts and tables 1-36
  • Take Apart (PDF pp. 136-282): rear panel to sheet feeder, including the fuser and its thermoprotector, heater bulb and thermosensor, the three fans and the paper pickup block
  • Upgrades (PDF pp. 284-305): RAM, fax card, hard disks, IOP ROM version 3.0
  • Adjustments (PDF pp. 307-311): leading-edge registration with VR201
  • Exploded View (PDF pp. 313-316)

What it settles

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The engine is a Canon LBP-P430 printing 17.1 pages per minute on letter and 16.2 on A4 at 600 dpi. The I/O board has an AMD 29030 RISC processor at 25 MHz, 8 MB of RAM expandable to 32 MB and 4 MB of ROM, soldered or on SIMMs.[3]

The extended power-on self test is started with a mini DIN-8 loopback connector (part 922-1489, or a plug with pins 1 and 2 joined) in the serial port and the configuration switch up. It shows twelve four-light codes, from the I/O controller board and RAM SIMMs to the fuser, fans, main motor and a failing SCSI disk.[4]

After a fusing failure the DC controller charges C208 and the printer stays in error for about 10 minutes, or until C208 is discharged by hand.[5]

Only five RAM configurations work (8, 12, 16, 24 and 32 MB); 12 MB is the minimum for PhotoGrade; 16 MB SIMMs must use 2K refresh.[6]

The troubleshooting tables are the same as those in the Pro 600/630 Service Source apart from the capacitor (C208 instead of C202) and the fan table, which covers three fans.[1]

What this manual does not contain

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There is no schematic and there are no component values. The board diagrams locate connectors and a few named parts (C208, VR201), and the wiring diagram shows connections between assemblies. It refers to separate envelope feeder and sheet feeder manuals and to a "New Servicing Issues" document on the Service Source CD, which are not part of this PDF.[2][1]

Pages that cite this document

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Download: LaserWriter 16-600 PS Service Source.pdf

References

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  1. ↑ 1.0 1.1 1.2 Apple Computer, Inc., LaserWriter 16/600 PS (Service Source), 316 pp., PDF created 26 October 1995. Hosted as File:LaserWriter 16-600 PS Service Source.pdf.
  2. ↑ 2.0 2.1 LaserWriter 16/600 PS Service Source, Basics, Read Me First, pp. 1-2 (PDF pp. 3-4).
  3. ↑ LaserWriter 16/600 PS Service Source, Specifications, Engine pp. 1-5 and I/O Board pp. 6-7 (PDF pp. 46-52).
  4. ↑ LaserWriter 16/600 PS Service Source, Troubleshooting, Printer Diagnostic (EPOST), pp. 4-8 (PDF pp. 63-67).
  5. ↑ LaserWriter 16/600 PS Service Source, Troubleshooting, Capacitor Discharge, pp. 22-24 (PDF pp. 81-83).
  6. ↑ LaserWriter 16/600 PS Service Source, Upgrades, Upgrading RAM, pp. 1-5 (PDF pp. 284-288).
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