Apple Laserwriter Select Service Manual

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K Service Source

LaserWriter Select

LaserWriter Select 300, LaserWriter Select 310,

LaserWriter Select 360

K Service Source

Basics

LaserWriter Select

Basics

Paper Path - 1

 

 

 

Paper Path

There are three paper sources and one output tray in a complete system.

Output Tray

Manual Feed Tray

Standard Cassette (250 Sheets)

Optional Sheet Feeder (250 or 500 Sheets)

Basics

Sensing System - 2

 

 

 

Sensing System

There are four paper sensors in the LaserWriter Select printer. Each sensor consists of an actuator, a U-shaped photo interrupter, and circuitry that communicates back to the DC controller.

Paper Delivery Sensor PS201

Registration Sensor PS602

Manual Feed Sensor PS701

Paper-Out Sensor PS601

Basics

Interface Connectors - 3

 

 

 

Interface Connectors

Interface connector diagrams for each of three LaserWriter

Select models are located on the following pages.

Basics

Interface Connectors - 4

 

 

 

LaserWriter Select 300

Mini DIN-8

Basics

Interface Connectors - 5

 

 

 

LaserWriter Select 310

Centronics Parallel

Mini DIN-8

Basics

Interface Connectors - 6

 

 

 

LaserWriter Select 360

RJ-11

Centronics Parallel

Mode Switch RS-232 Mini DIN-8

 

(Optional

 

 

 

Fax Port)

 

 

 

 

 

 

 

 

 

 

 

Basics

LaserWriter Safety - 7

 

 

 

LaserWriter Safety

Unplug Printer

LaserWriter printers operate at high voltages. To prevent serious injury, always switch off the printer and unplug the AC power cord before servicing the printer.

Laser Beam Safety

Never remove the cover of the laser/optic assembly or disconnect the beam-detect cabling when the printer is switched on. Although the reflected laser beam is invisible, direct exposure to it can permanently damage your eyes.

Never disassemble the laser/optical assembly, whether the printer is powered on or not. The laser diode and focusing lenses are factory-aligned.

Basics

LaserWriter Safety - 8

 

 

 

 

Fuser Heat

 

The fuser assembly rollers become very hot during printer

 

operation. Before servicing the fuser assembly, switch off

 

the printer for at least 5 minutes to allow the fuser

 

assembly rollers to cool.

 

Toner Safety

 

Toner is a nontoxic substance composed of plastic, iron, and

 

a small amount of pigment. Clean skin and clothing by

 

removing as much toner as possible with a dry tissue and

 

then washing with cold water. Hot water causes toner to jell

 

and permanently fuse into clothing. Toner attacks vinyl

 

materials, so don't allow toner to contact vinyl.

 

Motor Stops When Cassette is Removed

 

For safety purposes, the main motor on the LaserWriter

Basics

LaserWriter Safety - 9

 

 

 

 

Select 360 stops when the paper cassette is removed.

 

Weight

 

LaserWriter printers are heavy. When lifting or moving

 

the printer, be careful not to strain your back.

 

 

 

 

 

 

 

 

 

 

K Service Source

Specifications

LaserWriter Select

Specifications

General - 1

 

 

 

Engine

Printing Method

Optical System

Resolution

Imaging Languages

Supported

General

Select 300/310: Fuji Xerox P0 engine

Select 360: Fuji Xerox P1 engine

Electrophotography using single-component dry toner

Semiconductor laser

Select 300/310: 300 dots per inch (dpi) Select 360: 600 dpi (300 dpi in PCL mode)

Select 300: QuickDraw

Select 310: PostScript

Select 360: PostScript and HP PCL

Specifications

Intro Dates - 2

 

 

 

Intro Dates

Select 300/310

500-Sheet Feeder

Select 360

February 1993

August 1993

October 1993

 

Specifications

Logic Board - 3

 

 

 

 

 

 

Logic Board

CPU

Select 300: N/A

 

 

Select 310: AMD Am29205; 16 MHz

 

 

Select 360: AMD Am29200; 15 MHz

DRAM

Select 300: 512K, expandable to 1.5 MB or 4.5 MB

 

 

Select 310: 1.5 MB, expandable to 5.5 MB

 

 

Select 360: 7 MB (3 MB soldered on board), expandable to 16 MB

 

 

Note: If you install a 16 MB RAM SIMM, the 3 MB of soldered

 

 

RAM is not used.

ROM

Select 300: 32K

 

 

Select 310: 1 MB, expandable to 2 MB

 

 

Select 360: 4 MB

 

Specifications

Logic Board - 4

 

 

 

 

I/O

Select 300: RS-422

 

 

Select 310: RS-232; Centronics parallel connector

 

 

Select 360: RS-232; Centronics parallel connector; AppleTalk

 

 

DIN-8

 

 

 

 

 

 

 

 

 

 

 

 

Specifications

Performance - 5

 

 

 

Print Delivery

Life Expectancy

Printing Speed

Performance

Face-down

Select 300/310: 150,000 pages

Select 360: 300,000 pages

Select 300/310: 5 pages-per-minute maximum; actual performance depends on the application.

Select 360: 10 pages-per-minute maximum; actual performance depends on the application.

Specifications

Built-In-Fonts - 6

 

 

 

LaserWriter Select 300

LaserWriter Select 310

LaserWriter Select 360

Built-In-Fonts

39 fonts from the following font families: Avant Garde, Bookman, Chicago, Courier, Geneva, Helvetica, Helvetica Narrow, Monaco,

New Century Schoolbook, New York, Palatino, Symbol, Times, Zapf Chancery, and Zapf Dingbats.

13 fonts from the following font families: Courier, Helvetica, Times, and Symbol. Additional PostScript fonts can be downloaded to printer memory.

Fonts from the following font families: Avant Garde, Bookman, Courier, Helvetica, Helvetica Narrow, New Century Schoolbook, Palatino, Symbol, Times, Zapf Chancery, and Zapf Dingbats.

Specifications

Electrical - 7

 

 

 

Electrical

Line Voltage

Power Consumption

US/Japan:100-115 VAC, 50-60 Hz

Europe/Australia:220-240 VAC, 50 Hz

450 W maximum at115 V or 220V

 

Specifications

Physical - 8

 

 

 

 

 

 

Physical

Dimensions

Height: 8.0 in. (25.3 cm)

 

 

Width: 15 in. (38 cm)

 

 

Depth: 18.3 in. (45 cm)

Weight

26.4 lbs. (12 kg)

 

 

 

 

 

 

 

 

 

 

 

 

 

Specifications

Environmental - 9

 

 

 

 

 

 

Environmental

Temperature

50° - 90.5°F (10° - 32.5°C)

Humidity

20% - 80% relative humidity

 

 

 

 

 

 

 

 

 

 

 

 

Specifications

Paper - 10

 

 

 

Paper

Paper Weights

Cassette feed: 20 lb., single-sheet, photocopy bond

Manual feed: 20-28 lb., letterhead and colored stock, mediumweight transparency material, envelopes, and labels

Cassette Size

250-sheet universal cassette: US letter, A4, B5, executive 250-sheet legal cassette (optional)

500-sheet cassette (optional): US letter, A4, and B5 Envelope cassette (optional)

Capacity In

Capacity Out

Cassette: 250 or 500 sheets Manual: Single sheet Envelope: 30 envelopes

Face-down tray: 150 sheets

K Service Source

Troubleshooting

LaserWriter Select

Troubleshooting

General - 1

 

 

General

Troubleshooting contains quick-reference troubleshooting information for the LaserWriter Select. We encourage you to review and print out this chapter before troubleshooting a printer.

At the end of this chapter are troubleshooting flowcharts and tables. If a table name clearly addresses your problem, you can go directly to that table. If not, you should go to the flowchart associated with the version of the printer you are working on.

Troubleshooting

Troubleshooting Tips - 2

 

 

Troubleshooting Tips

Multimeter Probes

When taking voltage and resistance readings, you will need to use special multimeter probes. The connectors within the LaserWriter Select are very small and require sharp needlepoint probes to make good contact. Do not use probes that do not make proper contact.

Printer Overheating

To prevent possible overheating, do not run the LaserWriter Select 360 printer for longer than 10 minutes with the covers removed, and be sure to keep all vents clear.

Troubleshooting

Service Test Page - 3

 

 

Service Test Page

The LaserWriter Select service test page consists of a line matrix. The LaserWriter Select printers produce a service test page when you jumper the two pins at connector P32 on the DC controller board. The test page confirms print engine operation.

DC Controller

Screwdriver

Board

or Paper Clip

 

P32

Troubleshooting

Service Test Page - 4

 

 

 

If the I/O controller mount is installed, you can access P32 by

 

inserting the straightened end of a paper clip through the small

 

access hole in the rear face of the I/O controller mount.

 

Caution: If you want to run a service test page while the printer

 

is in an open test-ready state, you must manually actuate the

 

delivery sensor, otherwise a paper jam will occur. See "Test-

 

Ready Configuration" in this chapter.

 

 

 

 

 

 

 

 

Apple Laserwriter Select Service Manual

Troubleshooting

Test-Ready Configuration - 5

 

 

Test-Ready Configuration

Paper delivery sensor PS201 is connected to the I/O controller mount. When you remove the mount to troubleshoot inside the printer or to run a service test page, you must reconfigure the sensing system to simulate an operational printer.

Troubleshooting

Test-Ready Configuration - 6

 

 

 

To reconfigure the sensing system, remove the I/O controller

 

mount and set it at an angle on top of the power supply. Position

 

the mount so that connector P32 on the DC controller board is

 

accessible.

 

Insert a folded piece of paper into the U of sensor PS201, and

 

make sure that the two cables are securely attached to the I/O

 

board. If you need to communicate with a Macintosh, you can do so

 

by reconnecting the serial connector.

 

Caution: Jumpering connector P32 initiates a service test page.

 

If the printer is in a test-ready configuration, you must manually

 

actuate this sensor as paper hits the delivery sensor actuator

 

within the fuser assembly.

 

 

 

 

 

 

 

 

Troubleshooting

310/360 Power-On Self Test - 7

 

 

310/360 Power-On Self Test

The LaserWriter Select 310 and 360 go through a self diagnostic each time that you switch the printer on. This diagnostic is called the Power-On Self Test (POST). POST does not occur on the LaserWriter Select 300 printer.

Note: This test is not the same as the engine diagnostic (see next topic). Unlike the engine diagnostic test, POST does not require the placement of any loopback cable.

Observing how the LEDs extinguish from that point can help isolate certain failure areas.

The Ready LED extinguishes when no errors are found on the I/O controller board.

The Paper-Out LED then extinguishes when no errors are found on the RAM card.

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