dead 4114's was: Re: Tektronix 4108 terminal?

Richard legalize at xmission.com
Mon Oct 13 23:11:30 CDT 2008


In article <48F4135A.3000305 at sbcglobal.net>,
    Bob Rosenbloom <bobalan at sbcglobal.net>  writes:

> > Do you want that, Bob?
> 
> Yes, I would like a copy. It might at least give me a hint. Both of my 
> units give different errors. I did try swapping
> boards between them but no luck. Does your 4113 work OK?

I'll just type in the appendix.

I have only just received my 4113.  Currently its in the warehouse and
I haven't unpacked the pedestal yet.  I unpacked the manuals and a few
peripheral bits tonight.


Appendix B

Power-Up Sequence and Self-Test
===============================


The Power-Up Sequence
---------------------

Each time you turn the terminal on, it automatically tests parts of
its memory and circuitry.  This is called the power-up sequence.  It
takes from 15 to 60 seconds, depending on what options your terminal
has, and requires no operator interaction.

During the power-up sequence, the lights in the keyboard go through
the following sequence:

1. All lights turn on.
2. The CAPS LOCK light turns off.
3. All other lights turn off.
4. The XMT and RCV lights flash once simultaneously.
5. All lights turn off.

If the terminal bell does not ring during the power-up sequence
(within 60 seconds of turning the terminal on), press the PAGE key.
The screen is erased and the cursor flashes in the upper-left corner
of the screen.  If the dialog area is enabled, the light in the DIALOG
key is on and the cursor appears on the first available line of the
dialog area.  As soon as the cursor appears on the screen, the
terminal is ready for use.

If the power-up sequence detects an error, the terminal bell rings
one, two, three, or four times, depending ont he severity of the
problem.  There may also be a message on the screen.

Power-Up Error

If the power up sequence encounters an error that will not prevent you
from using the terminal (a non-fatal error), the bell rings one time
and a message is displayed on the screen.

If the terminal bell rings and you cannot read the message that is
displayed, press the MASTER RESET button (Figure B-1).  This causes
the screen to erase and the power-up sequence to run again so you can
read the message.

An example of such an error is when a problem exists that prevents you
from using one of the terminal's options.  If this happens, the bell
rings once and a message is displayed.  For example, if the disk
option failed the power-up sequence, the following message would
appear.

  ROM  Set:  42-Fail

If there is a problem with a tablet option, the following message
appears:

  ROM  Set:  13-Fail

When an option fails, that option cannot be accessed but the rest of
the terminal's features can still be used.  You can report the failure
to a service person, or run the self-test procedures (described later
in this appendix) to isolate the failure more specifically.

If an error occurs when the terminal is checking its keyboard, the
following message can appear:

  Keyboard  I-D  --  XX

where XX is a keyboard ID value.  If this occurs, record the message
and contact a service person.

The terminal has a setup memory, which remembers many of the
terminal's parameters or settings after it is turned off.  These
attributes are reinstated the next time the terminal is turned on.  If
that memory fails, the terminal bell rings once and the following
message appears on the screen:

  Setup  Defaults  Reset

This occurs if the terminal's configuration has been altered by
putting in or taking out a circuit board.  It also occurs if the
battery that powers the setup memory fails.  It is important to note
that if you change one or more boards, only the parameters affected by
the change are reset.  If the setup memory battery fails, all
parameters are reset to default.

Fatal Errors

The terminal is not operational (fatal error) if its standard system
fails.  If that happens, the terminal bell rings four times, once when
the following message appears on the screen and three times when the
fatal error is reported:

  ROM  Set:  00-Fail

If the power-up sequence encounters a fatal error before the screen is
checked, the terminal bell rings three times and the indicator and
keyboard lights blink in a particular sequence.  The sequence in which
they flash indicates the test that has failed.

If this occurs, record the light pattern and report it to a qualified
service technician.  You may also want to run the self-test procedure,
explained later in this section, which provides more detailed
information that you can relay to a qualified service technician.

When there is a fatal error, the terminal cannot be operated except to
run the self-test procedure.


Self-Test
---------

General Self-Test

The power-up sequence is an abbreviated test of the terminal's memory
and circuitry.

A more extensive test of the terminal's operating conditions is
initiated by the SELF TEST button.  Self-test thoroughly tests the
terminal and allows a service technician to make any necessary
adjustments.

If the terminal detects an error in the power-up sequence, you can run
the self-test procedure to isolate the problem.  You can then report
the specific problem to a technician.

Self-test is initiated by pressing the SELF TEST and MASTER RESET
buttons (Figure B-1) in the following sequence:

1. Press SELF TEST.
2. Continue to hold SELF TEST while you press and release MASTER RESET.
3. Continue to hold SELF TEST until the indicator lights begin to ripple.
4. Release SELF TEST.

For about the first three minutes of the self-test, the light patterns
continue to change as tests are run.  If a module fails, the terminal
bell rings twice and a light pattern remains on for 20 seconds,
indicating which test has failed.  Record that pattern to report to a
technician.

Submessages

In addition to this initial light-coded message, many messages have up
to three submessages which can provide a technician with even more
information about the problem.

If you want to view the submessages, start the following sequence
within 20 seconds after the initial message appears.  (If you take no
action within 20 seconds, the self-test continues.)

1. Press the RETURN key.
2. The terminal bell rings twice and another light pattern is displayed.
3. Record the light pattern and press RETURN again.
4. If there is another submessage, the bell rings twice and another
   light pattern is displayed.
5. Record the light pattern and press RETURN.
6. If there is a third submessage, the bell rings twice and another
   light pattern is displayed.
7. Record the light pattern and press RETURN.
8. When you have seen all of the submessages, there is no bell when
   you press RETURN, the light in the CAPS LOCK key turns off, and the
   indicator light pattern changes to indicate that the next test in the
   self test procedure is being run.

Error messages are displayed in this manner as the terminal checks its
display.  After the display has been checked, subsequent error
messages are displayed on the screen instead of by light patterns.  If
the test halts during this part of the test, it is because the screen
is filled with error messages.  Make a hard copy or write down the
error messages.  Press the PAGE key and the test will continue.

The self-test procedure is explained in more detail in the 4113
Service Manual.


Resetting Setup Memory
----------------------

You may find it necessary or desirable to restore the terminal's
operating environment to the factory defaults.  This can be
accomplished with the self-test procedure.  To do so, take the
following steps:

1. Initiate the self-test as explained earlier in this appendix.
2. Within 20 seconds of initiating the self-test, press and hold the
   CTRL key while you press and release the C key, then release the
   CTRL key.  This causes the light in the CAPS LOCK key to stop
   flashing and the following menu is displayed on the screen:

   411X Menu
   --
   f1 4113 Display
   f2 Processor Board
   f3 Disk
   f4 Tablet
   f5 3PPI
   --
   Selection
   *

3. Press Function Key 2 (F2).  The following menu appears on the screen:

   Processor Board Menu
   --
   f1 CMOS-Reset
   f2 Keyboard
   f3 Host Port
   --
   Selection
   *

4. Press Function Key 1 (F1).  The following message appears below the
   menu:

   Processor Board Menu
   --
   f1 CMOS-Reset
   f2 Keyboard
   f3 Host Port
   --
   Selection
   *f1
   CMOS-Reset
   Selection
   *

   The term CMOS RESET means that the Setup memory has been restored to
   its factory default values.

5. Press and hold the CTRL key while you press and release the E key,
   then release the CTRL key.  The terminal exits from the self-test
   procedure, runs the power-up sequence, and when the cursor appears,
   is ready for use.


Figure B-1.  The MASTER RESET and SELF TEST Buttons

On the right side of the pedestal, underneath the keyboard are two buttons.

The right button is the MASTER RESET button.

The left button is the SELF TEST button.
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