>> Does anyone here remember how to print the POST
>> Diagnostic page on a
>> LaserWriter Select 300?  I know the printer works,
>> but I'd just wanna
>> kill some time and look at it.  :-)

Hi, Ian

>From the service manual:

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.

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.

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.

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.

=====

pmail me for a copy of the service manual (with pix).

hth


--

Take care . . . . .

Brian



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