3 Tests and Diagnostics
3.24 SETUP
Libretto 50CT/70CT Maintenance Manual
3-57
(c)
Parallel Port
This option sets the interrupt level and I/O address for the parallel port. When
the Printer Port Type (see settings below) is set to Std. Bi-directional, the
options are:
LPT setting
Interrupt
level
I/O address
LPT 1
7
378H
LPT 2
5
278H
LPT 3
7
3BCH
Not Used
(Default)
Others
(Other settings are made
automatically by the Plug-
and-Play operating system.)
When the Printer Port Type (see settings below) is set to ECP, the DMA
channel can also be set to 1, 2, or 3. The default is 3.
LPT setting
Interrupt
level
I/O address
DMA Channel
LPT 1
7
378H
3
LPT 2
5
278H
3
LPT 3
7
3BCH
3
Not Used
(Default)
Others
(Other settings are made
automatically by the Plug-and-
Play operating system.)
When you select one of the above options, except for
Not used
, a subwindow
similar to the one below displays to let you set the parallel port mode. The
options for this setting are
ECP
(default) and
Std. Bi-Directional
.
OPTIONS
Mode
DMA
=
=
ECP
Channel 3
For most printers, the port should be set to
ECP
. With other parallel devices,
the setting should be
Std. Bi-Directional
.
Summary of Contents for Libretto 50CT
Page 8: ...viii Libretto 50CT 70CT Maintenance Manual ...
Page 10: ...Chapter 1 Hardware Overview ...
Page 11: ...1 ii Libretto 50CT 70CT Maintenance Manual ...
Page 30: ...Chapter 2 Troubleshooting Procedures ...
Page 31: ...2 ii Libretto 50CT 70CT Maintenance Manual ...
Page 61: ...Chapter 3 Tests and Diagnostics ...
Page 62: ...3 ii Libretto 50CT 70CT Maintenance Manual ...
Page 64: ...3 iv Libretto 50CT 70CT Maintenance Manual 3 22 2 Operations 3 45 ...
Page 128: ...Chapter 4 Replacement Procedures ...
Page 129: ...4 ii Libretto 50CT 70CT Maintenance Manual ...
Page 167: ...Appendices ...
Page 168: ...App ii Libretto 50CT 70CT Maintenance Manual ...
Page 178: ...Appendix B Board Layout B 4 Libretto 50CT 70CT Maintenance Manual ...
Page 183: ...Appendix C Pin Assignments Libretto 50CT 70CT Maintenance Manual C 5 ...
Page 186: ...Appendix Appendix C Pin Assignments C 8 Libretto 50CT 70CT Maintenance Manual 43 GND 44 NC ...
Page 194: ...Appendix F BIOS Rewrite Procedures F 2 Libretto 50CT 70CT Maintenance Manual ...
Page 196: ...Appendix G Reliability G 2 Libretto 50CT 70CT Maintenance Manual ...