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ECP and Bi-directional Parallel Port Modes
To scan using the HP PSC 500, you must set your computer's parallel port to either ECP or bi-directional mode. HP recommends using ECP mode if your computer has this capability.
Most computers have a setup, CMOS, hardware configuration, or other screen that can be accessed during the boot process. This screen shows your computer's current settings, including parallel port mode. For more information on ECP and bi-directional modes, read the following sections of this document.
Introduction
What does bi-directional or ECP do for my HP PSC 500?
The typical printer only receives information from the computer. This is a one-way transaction. More advanced printers and multi-function products such 12312c224m as your HP PSC 500 can also send information to the computer. To send information back to the computer requires a two-way or bi-directional interface.
Each product must be connected to its own port (e.g., LPT1, LPT2, etc.) when using a bi-directional interface. Connect your HP PSC 500 directly to your computer's parallel port using the cable provided in the box. Do not connect your HP PSC 500 to a switch box or the pass-through port of another parallel product such as a scanner, tape drive, or CD-ROM drive. Doing so can cause erratic behavior of both products and the possible loss of information.
Bi-directional (minimum)
The bi-directional interface not only allows scanning, it allows the HP PSC 500 to send messages to your computer screen such as print status, out of paper, and out of ink. If you received a message during the software installation that bi-directional communication could not be established with your HP PSC 500 (with the product turned on and using the proper cable), you will need to turn on the bi-directional mode in your computer. If you don't know whether bi-directional communication was established, click "Test product communication" under the Services tab in the HP PSC 500 Toolbox. The Toolbox icon is located on your desktop or in the HP PSC 500 program folder.
Extended Capabilities Port (recommended)
The Extended Capabilities Port (ECP) is a particular type of bi-directional interface established by the IEEE 1284 standard. If your computer has ECP capability, scanning will be faster than using a plain bi-directional interface. Scanning speed also depends on several other factors such as your computer's processor type, amount of RAM, amount of hard disk space, etc. An ECP port can increase speed up to four times faster. If you don't know whether your computer has ECP mode turned on, ask your computer's manufacturer how to enable ECP, or refer to your computer's documentation or online help system.
If You Turn on ECP after Installing the HP PSC 500 Software
Windows 95/98 users
Because of the way Windows 95/98 records drivers in the registry, it will think your HP PSC 500 is not installed when you change the port type to ECP, and the Plug and Play screens will display when you reboot.
To avoid the Plug and Play screens, follow these instructions:
1. Turn off your HP PSC 500.
2. Set your port to ECP and reboot.
3. Run z:\Utilities\ECP patch\Setup.exe from your HP PSC 500 software installation CD-ROM, where z is your CD-ROM drive.
If the Plug and Play screens display:
Windows 95-Choose Do not install a driver (Windows will not prompt you again) on the "New Hardware Found" screen and click OK.
Windows98-Click Next on the first "Update Device Driver Wizard" screen and Finish on the second "Update Device Driver Wizard" screen.
Windows NT 4.0 users
If you are a Windows NT 4.0 user, you only need to change the port type to ECP and then reboot your computer. Do not run the ECP patch utility.
Now What Do I Do?
Using the IEEE 1284 parallel cable
For the bi-directional interface of your HP PSC 500 to work properly, you must use an IEEE 1284-compliant cable with a 1284-C connector. The cable that was shipped with your HP PSC 500 is an IEEE 1284-compliant cable. If you need to replace your cable, you must get one that has "IEEE 1284-compliant" stamped on it, and it must not be longer than 3 meters.
Each product must be connected to its own port (e.g., LPT1, LPT2, etc.). Connect your HP PSC 500 directly to your computer's parallel port. Do not connect your HP PSC 500 to a switch box or the pass-through port of another parallel product, such as a scanner, tape drive, or CD-ROM drive. Doing so can cause erratic behavior of both products and the possible loss of information.
Important: If, after reading the rest of this document, you are not comfortable following these directions, call HP Support for assistance. The HP Support phone numbers are located in Chapter 2 of your HP PSC 500 Customer Care Guide.
Turning on bi-directional or ECP
If your system failed the bi-directional communication test or the test told you that it couldn't find your ECP port, you need to turn on this capability to get the best use of your HP PSC 500.
To check the computer itself for bi-directional and/or ECP mode, you must check the system configuration, also known as BIOS, CMOS, or hardware configuration. Ask your computer's manufacturer how to do this, or refer to your computer's documentation or online help system.
You can also check your computer documentation or contact your computer manufacturer for assistance.
NOTE: If there is a choice between DMA1 or DMA3, select DMA3 since it is less likely to conflict with other devices.
Buying an ECP card if your machine doesn't have ECP or you need more ports
You can buy a card to install in your computer to add a parallel port. If you plan to do a lot of scanning and your computer doesn't have ECP mode, or if you need to attach more than one parallel product, we recommend that you purchase a parallel port I/O card to add an ECP port to your computer. Hewlett-Packard suggests the following cards.
Suggested cards:
Important: I/O is an intricate subject and some cards won't work with some computers. When you buy a card, make sure you can return it if it doesn't work with your system.
SIIG IO-1809 High Speed I/O, I/O Professional (includes 2 extra serial ports) [but not the 1818]
Promise Tech Pro
Accessing Your Computer's Setup Information
To change the bi-directional or ECP setting of your parallel port, you must access your computer's setup information. Depending on the computer manufacturer, the information may be located under Setup, Configuration, CMOS, or BIOS. Common methods of getting into the Setup are:
Pressing a key such as F1, F2 or Delete at a particular point in the startup process.
Restarting your computer using a special set of keys such as Ctrl-Alt-Esc.
Having a special startup diskette that puts you into the Setup.
Once you get into the Setup program, you should be able to locate a section for your parallel port and use keys such as left/right arrow or F7/F8 to change settings.
If you cannot get into your computer's configuration utility program, or you need assistance changing your settings, contact your computer manufacturer for assistance.
Major Computer Manufacturers and Getting into Their BIOS/CMOS
The information in this section was obtained from public web sites in October 1996. It is provided for information only. Hewlett-Packard in no way warrants or supports this information. Contact the manufacturer of your computer if you need assistance.
Acer
www.acer.com
Aspire
1. Reboot using Ctrl-Alt-Esc.
2. Use the arrow keys to highlight System Security and press Enter.
3. Find On Board Communication Ports and then use the arrow keys to highlight Operation Mode.
4. Use the left/right arrow keys to set the operation mode to Extended Capabilities Port.
5. Press Esc and select Yes when asked to save the settings.
Compaq
www.compaq.com
Presario 7100
1. Turn on (or reboot) your system.
2. Press DEL to enter the system setup program.
3. Select Advanced System Settings.
4. Select Integrated Peripherals.
5. Select LPT Extended Mode.
6. Press the Space Bar to select ECP.
7. Press F10 and select YES to Save and EXIT.
Dell
www.dell.com
Dell's web page has instructions for each one of their computers. As a generic example, try this:
1. Turn on (or reboot) your system.
2. When prompted, press DEL immediately to enter the system setup program.
3. Press Alt-P to get to Screen 2.
4. Use Tab to move to Parallel Mode.
5. Use the arrow keys to set Parallel Mode to ECP. (If your computer doesn't have ECP, set the mode to PS/2 to get bi-directional functioning.)
6. Press Esc to exit the system configuration.
Gateway 2000
www.au.gw2k.com
To tell what kind of BIOS you have, reboot your computer and watch the screen carefully. If one of the first words you see is Phoenix, Award, or AMI (in the upper left corner of your screen) that is the type of BIOS you have.
with Phoenix BIOS
1. If you are in Windows, exit to DOS.
2. Press Ctrl+Alt+Esc. If this doesn't work, follow these steps.
3. Leave the computer turned on and use the key to lock the keyboard.
4. Press the Reset button on the front of the computer. A message will display asking you to unlock the keyboard.
5. Unlock the keyboard and press F2.
with AMI or Award BIOS
1. Press the Reset button on the front of the computer. Watch the screen. After the memory count is complete, a message appears about pressing Delete to enter the setup program.
2. Press Delete. After a few moments a menu appears on the screen.
3. Move the highlight bar to RUN CMOS SETUP and press Enter. If you are prompted to choose Standard or Extended setup, choose Standard.
an EISA computer
Press the Reset button on the front of the computer, then press Ctrl+Alt+Esc immediately when the memory count begins. EISA bus computers usually require a separate diskette or CD-ROM to permanently change the system configuration.
If Ctrl+Alt+Esc doesn't work, try Ctrl+Alt+S.
Hewlett-Packard
www.hp.com
HP Vectra
1. Reboot your computer.
2. When the bottom of the Hewlett-Packard System Hardware Test screen displays, press F2.
3. Use the arrow keys to highlight Parallel Port Mode.
4. Use F7 and F8 to switch settings. Set to
Bi-directional ECP, if available
Bi-directional, if necessary
HP Pavillion
1. From Windows, click Start, click Shut Down, click Restart, and then click Yes.
2. At the HP Blue screen, press F1 to enter CMOS.
3. Use the arrow keys to highlight the appropriate setting.
4. Press F10 to Save and Exit, and then press Enter.
IBM
www.ibm.com
Aptiva
1. Reboot using one of these three methods
a) Press Ctrl-Alt-Del.
b) From Windows, click Start, click Shut Down, click Restart, and then click Yes.
c) Turn off computer, wait 30 seconds and then turn it back on.
2. When you see the Blue IBM screen and memory counting, press F1 to enter the configuration utility.
3. Once you're in the configuration utility, you will see many choices.
a) Use the up and down arrow keys to highlight Parallel Port Mode.
b) Use the left and right arrow keys to switch choices until Extended Capabilities Port (ECP) mode is highlighted, then press Enter.
Micron
www.micron.com
with Phoenix BIOS
1. Reboot using Ctrl-Alt-Del or the Reset button.
2. During the POST test (memory count), press F2.
Packard Bell
www.packardbell.com
Hardware Setup Program
1. Reboot your computer.
2. Press F1 or F2 (depends on your computer) before you hear the beep as the system boots up.
I have ECP and it doesn't work-getting a BIOS upgrade from your manufacturer
If your computer has an ECP mode that is turned on and you are still having problems getting ECP recognized, your computer may need a BIOS upgrade. Check with your computer manufacturer.
For example, the HP Vectra XU 5/90 may require a BIOS upgrade for its ECP mode to work properly with the HP PSC 500. The BIOS upgrade for the HP Vectra XU 5/90 can be downloaded from HP's Web site at www.hp.com.
If your manufacturer does not provide a BIOS upgrade to resolve this ECP incompatibility, call HP Support for assistance. The HP Support numbers can be found in Chapter 2 of the HP PSC 500 Customer Care Guide.
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