Braillo 200, Инструкция по эксплуатации

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BRAILLO
M
NORWAY AS B 200
28
Note! The table is made for Page 1 up.
3. SERVICE AND MAINTENANCE
3.1 Troubleshooting
Through proofreading, errors have been found in some of the characters in the text.
The first thing to do is:
Check the characters in the text-file in your computer to find out if the error could come from the text-file
and not from the Braillo Printer. However, if your text-file is OK, a problem has occurred in the Braillo
Printer.
Inside the Printer there are four identical magnet racks, named from A to D. Each magnet rack contains
42 printing mechanisms. There are totally 168 printing mechanisms to choose among when the error
search begins. See figure in chapter 3.2, "Principal Design of Printing Procedure".
As a start, you should run the built-in Test Print. Depending on what kind of errors you have, you should
use different tests.
The essential thing at this stage is to find which magnet rack(s) is causing the trouble.
If there is missing dot(s), use the X-pattern to detect which magnet rack(s) is missing the dot(s).
If there are too many dots, use the full cell lines, or the test pattern on test print no. 4, and the extra dot(s)
will appear in the space between the lines.
However, the best test is ordinary text, if a proofreader is available. To locate the faulty magnet rack(s),
use the Table of Page Sequences.
See figure in chapter 3.3, "Table of Page Sequences".
An example how to use the table:
1 Find the page with the error. (Use the pagination on the printed page). Let us assume that the error
has occurred on page 10. Find the braille cell with the error. The braille cell contains 2 columns
of each 3 (or 4) dots. See figure below.
Here, it is assumed that the error is found in the column with dot 1, 2, 3 (and 7).
2 The Table of Page Sequences shows that page 10 is printed from the top and downwards. From
the same table you can see that this column with dot 1, 2, 3 (and 7) in the braille cell is printed by
a mechanism in magnet rack A.
Braille cell
1 o o 4
2 o o 5
3 o o 6
7 o o 8