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<DIV CLASS="navbar"><A HREF="http://vt100.net/"><IMG CLASS="button" SRC="vt100.net-logo.png" ALT="VT100.net" HEIGHT="16" WIDTH="102"></A> VT102 User Guide<TABLE WIDTH="100%">
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<TD ALIGN="LEFT"><A HREF="chapter9.html">Chapter 9</A></TD>
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<TD ALIGN="RIGHT">&nbsp;</TD>
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<TABLE ID="T9-1" CLASS="majortable" FRAME="VOID" RULES="GROUPS" CELLSPACING="0" CELLPADDING="4" BORDERCOLOR="#ffffff">
<CAPTION>Table <SPAN CLASS="tabnum">9-1</SPAN>&nbsp;&nbsp;&nbsp;<SPAN CLASS="tabtitle">Problem Checklist</SPAN></CAPTION>
<THEAD>
<TR VALIGN="BOTTOM">
<TH>Symptom</TH>
<TH>Possible Cause</TH>
<TH>Corrective Action</TH>
</TR>
</THEAD>
<TBODY>
<TR VALIGN="TOP">
<TD>ON LINE or OFF LINE is on with no cursor on screen.</TD>
<TD>Screen brightness too low.</TD>
<TD>Enter SET-UP and increase screen brightness.</TD>
</TR>
<TR VALIGN="TOP">
<TD>ON LINE and OFF LINE are not on with no keyboard response. Cursor on screen.</TD>
<TD>Keyboard cable not connected to terminal.</TD>
<TD>Connect keyboard cable.</TD>
</TR>
<TR VALIGN="TOP">
<TD ROWSPAN="4">KBD LOCKED is on.</TD>
<TD>Characters are typed faster than terminal can transmit them.</TD>
<TD>Cleared when terminal transmits characters in keyboard character buffer to computer.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Locked condition occurs when terminal is receiving characters with half-duplex
communication selected (by modem control SET-UP feature). Terminal cannot transmit
characters when receiving characters in half-duplex.</TD>
<TD>Cleared when line turns around and terminal can transmit keyboard characters.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Print operation selected while off-line.</TD>
<TD>Cleared when print operation ends.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Terminal not connected to computer correctly. Communication line signals are not
correct.</TD>
<TD>Cleared when correct connection exists between computer and terminal.</TD>
</TR>
<TR VALIGN="TOP">
<TD ROWSPAN="2">Terminal does respond to typed characters.</TD>
<TD>Computer cannot update screen.</TD>
<TD>Press <SPAN CLASS="keyname">NO SCROLL</SPAN>.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Computer turns keyboard off.</TD>
<TD>Computer turns keyboard on.</TD>
</TR>
<TR VALIGN="TOP">
<TD ROWSPAN="2">Garbled or error (<IMG SRC="char141.png" ALT="[]" HEIGHT="20" WIDTH="12">)
characters or no characters appearing on screen.</TD>
<TD>Incorrect SET-UP feature selected.</TD>
<TD>Correct SET-UP features.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Computer error occurred.</TD>
<TD>Check computer system.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Two characters appear on screen for each character typed.</TD>
<TD>Local echo on.</TD>
<TD>Turn local echo off.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Several bell tones during power up, reset or recall.</TD>
<TD>Read or write problem with user permanent memory.</TD>
<TD>Check SET-UP feature settings and try save operation.</TD>
</TR>
<TR VALIGN="TOP">
<TD>Printer does not print characters.</TD>
<TD>Printer and terminal features do not match.</TD>
<TD>Check SET-UP feature settings of terminal and printer.</TD>
</TR>
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<TD ALIGN="LEFT"><A HREF="chapter9.html">Chapter 9</A></TD>
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