4.2 Troubleshooting, incorrect Braille
If any errors have been found in some of the characters in the printed text during proofreading, the first
thing to do is:
Check the characters in the text-file in the computer to find out if the error could come from the text-
file and not from the printer.
If your text-file is OK, the problem is caused by the printer.
On earlier models of Braillo printers, this could be caused by either a electrical problem or a mechani-
cal problem. But on this model of printer, there is integrated a self-diagnostic system that is checking
the magnets continuously during printing, and this will trigger an alarm if it detects some electrical
problems with the magnets. So, the missing dots found here are probably caused by some faulty
mechanical parts or it could be dirt clogging the moving mechanisms.
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 from when the error
search begins. See section
4.1. ‘Printing principle’ on page 34
for more information.
If the printer has been printing a lot (a lot could be after a year, or after 1000 printing hours, depending
on what comes first) errors in the characters could occur. If this happens, it could just be that the printer
needs regular maintenance. See section
4.6. ‘Magnet rack - cleaning’ on page 49
, and section
4.20.
‘Maintenance’ on page 70
.
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),
see figures in section
4.1. ‘Printing principle’ on page 34
.
There are several methods to make experiments to confirm that you have found the correct magnet
rack(s). One good method is to disconnect the rest of the magnet racks, and see if the printer still
have problems.
To determine if a problem is electrical or mechanical.
See if the suspected pivot arm is moving like the rest of the pivot arms on the magnet rack. If it does
move, but still does not make dots, it is probably a mechanical problem.
However, if it does not move, but if you pull the long pivot arm manually with your finger against the
magnet during embossing and the dots starts to appear, it most likely caused by some problems in the
electrical circuits.
If one magnet rack is missing all the dots all the time, it could be because of a blown fuse. On the back
of the magnet racks there is a red light that is indicating that the magnet rack has power. If this light is
dark, check the fuse for the magnet rack.
See section
6.2. ‘Electric unit - overview’ on page 81
for more details.
BRAILLO
l
NORWAY AS
B 300 S2
40
Summary of Contents for 300 S2
Page 1: ...User s Guide BRAILLO L NORWAY FOR BETTER BRAILLE AND MORE BRAILLO 300 S2 Rev June 2017 ...
Page 2: ... 2017 Braillo Norway AS ...
Page 4: ...BRAILLO l NORWAY AS B 300 S2 4 ...
Page 79: ...Frame complete BRAILLO l NORWAY AS B 300 S2 79 ...
Page 90: ...7 GENERAL INFORMATION 7 1 Declaration of conformity BRAILLO l NORWAY AS B 300 S2 90 ...
