Apple Laserwriter Select Service Manual
K
Service Source
LaserWriter Select
LaserWriter Select 300, LaserWriter Select 310,
LaserWriter Select 360
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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
Mini DIN-8Centronics Parallel
Basics Interface Connectors - 6
LaserWriter Select 360
RJ-11
(Optional
Fax Port)
Mini DIN-8RS-232Mode SwitchCentronics Parallel
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
General
Engine
Printing Method
Optical System
Resolution
Imaging Languages Supported
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
DRAM
ROM
Select 300: N/A
Select 310: AMD Am29205; 16 MHz
Select 360: AMD Am29200; 15 MHz
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.
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
Performance
Print Delivery
Life Expectancy
Printing Speed
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
Built-In-Fonts
LaserWriter Select 300
LaserWriter Select 310
LaserWriter Select 360
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 V oltage
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
Weight
Height: 8.0 in. (25.3 cm)
Width: 15 in. (38 cm)
Depth: 18.3 in. (45 cm)
26.4 lbs. (12 kg)
Specifications Environmental - 9
Environmental
Temperature
Humidity
50° - 90.5°F (10° - 32.5°C)
20% - 80% relative humidity
Specifications Paper - 10
Paper
Paper W eights
Cassette Size
Capacity In
Capacity Out
Cassette feed: 20 lb., single-sheet, photocopy bond
Manual feed: 20-28 lb., letterhead and colored stock, medium-
weight transparency material, envelopes, and labels
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)
Cassette: 250 or 500 sheets
Manual: Single sheet
Envelope: 30 envelopes
Face-down tray: 150 sheets
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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
Board
Screwdriver
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:
is in an open test-ready state, you must manually actuate the
delivery sensor, otherwise a paper jam will occur. See "TestReady Configuration" in this chapter.
If you want to run a service test page while the printer
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:
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.
Jumpering connector P32 initiates a service test page.
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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