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Apple LaserWriter 16/600 PS

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Apple LaserWriter 16/600 PS
Apple LaserWriter 16-600 PS (All About Apple museum)
A LaserWriter 16/600 PS (All About Apple museum, CC BY-SA 3.0)
Manufacturer Apple Computer, Inc.
Type Laser printer
Release date September 1994
Interface LocalTalk, Ethernet, Centronics parallel, SCSI (printer hard disks); optional fax card
Compatible Macintosh (System 7.0 or later); Windows, NetWare and UNIX systems
Dimensions 307 × 425 × 429 mm (12.08 × 16.73 × 16.89 in)
Weight 19.1 kg (42.02 lb) with cassette
Power 100-120 V; about 0.79 kW

The Apple LaserWriter 16/600 PS is a 600 dpi network laser printer that Apple introduced in September 1994.[1] It has the same case as the Apple LaserWriter Pro 600 and Pro 630 but a faster Canon LBP-P430 engine, at 17 pages per minute on letter paper, and a new controller built round an AMD 29030 RISC processor. Apple's Service Source warns that its engine modules and paper feeders are not interchangeable with the Pro 600/630's.[2]

Maintenance and fault-finding are on Apple LaserWriter 16/600 PS General Maintenance and Apple LaserWriter 16/600 PS Troubleshooting Guide. The printer's diagnostic tables are almost word for word those of the Pro 600/630, so the troubleshooting guide refers to the Pro 600/630 guide for the tables the two share.[2]

Specifications

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LaserWriter 16/600 PS specifications (Service Source unless noted)
Item Value
Engine Canon LBP-P430; single-component microfine toner; semiconductor laser with a rotating six-faced prism mirror; 600 dpi
Speed 17.1 pages per minute on letter paper, 16.2 on A4; no monthly duty limit
Controller AMD 29030 RISC at 25 MHz; 8 MB RAM, expandable to 32 MB; 4 MB ROM, soldered or on SIMMs
Languages QuickDraw, PostScript Level 2 (version 2014) and HP PCL 5, switched automatically
Ports LocalTalk, Ethernet, Centronics parallel; SCSI for printer hard disks; optional fax card
Paper 250-sheet cassette; 100-sheet multipurpose tray; optional 500-sheet lower cassette and 75-envelope feeder
Power About 0.79 kW at 20 °C
Noise 52 dB or less printing and 34 dB or less standby (sound pressure at the bystander position)
Environment 10-32.5 °C, 20-80% relative humidity
Host Macintosh System 7.0 or later

[2]

Apple's own figures differ in places. Apple's October 1994 Apple Facts gives a 32 MHz AMD 29030 with an 80C186 I/O processor, memory expandable to 16 MB, and a weight of 40.0 lb (18.0 kg); the Service Source and the July 1995 Service Guide give 25 MHz, 32 MB and 19.1 kg with the cassette.[3][2][4]

I/O controller

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Apple LaserWriter 16-600 PS IO controller board diagram
The 16/600 PS I/O controller board and end bracket, from Apple's Service Source.

The end bracket carries the configuration switch and the parallel, fax, Ethernet, LocalTalk and SCSI connectors. On the board are two RAM SIMM slots (BA and DC), ROM SIMM slots that are empty on boards with soldered ROM, the IOP ROM, the fax card connector J15 and the internal hard disk connector J21.[2] If a board with ROM SIMMs is returned to Apple, its ROM SIMMs go with it; replacement boards without soldered ROM come with the ROM SIMMs bagged separately.[2]

The printer accepts jobs at the same time from AppleTalk, TCP/IP and NetWare and from the parallel port, switching between PostScript and PCL 5 by itself. The configuration switch is a two-position toggle: down for the standard settings, up for custom settings made in software.[2] Zone changes made with the Apple Printer Utility only survive a restart if the switch is up.[5]

The printer is set up with the Apple Printer Utility on a Macintosh, the LaserWriter Utility for Windows, the LWPMAN and LWFORM utilities under NetWare, or a Telnet configuration utility under UNIX. Apple's LaserWriter Utility for the Macintosh, used with earlier LaserWriters, does not work with the 16/600 PS.[2]

Memory

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The printer ships with 8 MB in slot BA. Apple supports only these configurations; others, such as 16 + 0 or 16 + 4, are likely to give an engine error at start-up:[6]

RAM configurations
Total Slot BA Slot DC Note
8 MB 8 MB empty As shipped
12 MB 8 MB 4 MB Minimum for PhotoGrade
16 MB 8 MB 8 MB
24 MB 16 MB 8 MB The original 8 MB SIMM moves to slot DC
32 MB 16 MB 16 MB The original 8 MB SIMM goes back to the owner

[6]

The SIMMs are 72-pin, 80 ns or faster, 107.95 mm long and no more than 25.53 mm high. A 16 MB SIMM must use 2K (11 × 11) refresh; 4K (10 × 12) refresh parts do not work. Fit the left SIMM before the right one.[6]

Hard disks

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One internal disk (Apple's kit M3297G/A) mounts on the I/O board, and up to six external SCSI disks can be attached with an HDI-30 SCSI system cable and a terminator. Do not use SCSI ID 7 or 0, and use only external disks that supply 5 V to the SCSI bus. A disk that is not switched on before or with the printer is not found, and the printer reports an error and will not start. Disks formatted for another LaserWriter or a Macintosh must be initialised again with the Apple Printer Utility.[7] Before fitting an internal disk, read the serial number on the yellow label at the top right of the I/O board: if it ends in 34AA, Apple's instruction is not to fit the disk and to return the board.[7]

Fax card

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The fax card plugs into J15 and is held by one screw to the I/O shield. Apple sold a US card with a built-in modem and an RJ-11 socket (M3298LL/A) and an international kit with a serial port for an external modem. The card sends to Group III fax machines, receives and prints Group III faxes at 200 dpi, and exchanges PostScript faxes at up to 600 dpi with other PostScript fax printers, at up to 9600 bit/s.[2]

IOP ROM 3.0

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The version of the I/O processor ROM is printed along the right edge of the startup page as "Rev PS: 1.0 I/O: xx". Apple's version 3.0 ROM, part 922-2458, replaced versions 1.0 and 2.0 and fixes several network faults: Ethernet lock-ups after a packet longer than 1518 bytes (version 1.0), EtherTalk dropping off during broadcast storms, the printer appearing in the wrong zone, invisibility behind Dayna PathFinder routers, slow printing through Farallon PhoneNET StarControllers, and a job that fails without an end-of-file marker taking the next job with it.[5]

Toner cartridge

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Apple's cartridge for this printer is M2473G/A. Revision B LaserWriter Pro 600/630 cartridges, introduced in late 1993, also fit, and carry a 1 × 3.5 in moulded ridge on top. Apple's warning is not to use the original Pro 600/630 cartridge, without the ridge, in the 16/600 PS.[2]

Documentation

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References

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  1. ↑ Apple, "LaserWriter 16/600 PS: Technical Specifications", Apple Support. Retrieved 2026-10-02. AMD 29030 at 25 MHz; PostScript Level 2 and PCL 5; LocalTalk, Ethernet and Centronics parallel; 790 W maximum, 6.8 A, 100-120 V, 58-62 Hz; 4 MB ROM; 2 RAM slots, 72-pin, 8-32 MB, 80 ns minimum, 4, 8 and 16 MB sizes; 17 pages per minute, 600 dpi, minimum life 450,000 pages; introduced September 1994; 40 lb; 12.1 × 16.7 × 16.9 in.
  2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 Apple Computer, Inc., LaserWriter 16/600 PS (Service Source), 316 pp., hosted as File:LaserWriter 16-600 PS Service Source.pdf (see LaserWriter 16/600 PS Service Source). Basics: Read Me First pp. 1-2, Printer Utilities pp. 3-6, Test/Configuration Pages pp. 32-38, Configuration Switch pp. 39-40 (PDF pp. 3-8, 34-42). Specifications pp. 1-13 (PDF pp. 46-58). Troubleshooting: Toner Cartridge Modification pp. 27-28, Circuit Board Diagrams p. 30 (PDF pp. 86-89). Upgrades pp. 1-22 (PDF pp. 284-305).
  3. ↑ Apple Computer, Inc., Apple Facts, October 1994, LaserWriter 16/600 PS (p. 114), Internet Archive item applefacts10.94ocr (OCR text). Retrieved 2026-10-02.
  4. ↑ Apple Computer, Inc., Apple Service Guide for LaserWriter Printers, Volume 3, 072-0142, July 1995, hosted as File:Apple Service Guide LaserWriter Printers Volume III July 1995.pdf (see Apple Service Guide Laserwriter Printers Volume Iii July 1995). Chapter 2, LaserWriter 16/600 PS: specifications, Tables 7 and 8, pp. 36-37 (PDF pp. 44-45).
  5. ↑ 5.0 5.1 LaserWriter 16/600 PS Service Source, Upgrades, IOP ROM v. 3.0, pp. 12-22 (PDF pp. 295-305).
  6. ↑ 6.0 6.1 6.2 LaserWriter 16/600 PS Service Source, Upgrades, Upgrading RAM, pp. 1-5 (PDF pp. 284-288).
  7. ↑ 7.0 7.1 LaserWriter 16/600 PS Service Source, Upgrades, Adding Hard Drives, pp. 8-11 (PDF pp. 291-294).