HP Deskjet F735 User Manual

							2.Make sure the product is turned on. 
3. If the product is not receiving electrical power, connect it to another power outlet. 
4. Turn off the product and reset it by disconnecting the power cord. 
5. Wait 5 seconds, and plug in the power cord. 
6. Turn on the product. 
7. Try to scan again. 
Cause: The product was not properly connected to a power supply or needed to be 
reset. 
If this did not solve the issue, try the next solution.
Solution 6: Check the USB cable connection
Solution: Check USB connection between the product and the computer. 
To check the USB connection 
1. Verify that the USB cable is securely plugged into the USB port on the back of 
the product. 
2. Make sure the other end of the USB cable is plugged into a USB port on your 
computer.
3. Try to scan again. 
If the scan fails, continue to the next step. 
4. Do one of the following, depending upon how the product is connected to the 
computer: 
• If the USB cable is connected to a USB hub, try unplugging and replugging 
the USB cable into the hub. If that does not work, try turning off the hub and 
then turning it on again. Finally, try disconnecting the cable from the hub and
connecting it directly to the computer. 
• If the USB cable is connected to a docking station for a laptop, disconnect the 
cable from the docking station and connect it directly to the computer. 
• If the USB cable is directly connected to the computer, try plugging it into 
another USB port on the computer.
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							5.If there are other USB devices connected to the computer, disconnect the other 
devices, except  for the keyboard and the mouse. 
6. Check the USB cable to make sure it is functioning properly.
NOTE:If you are using an older cable, it might not be working properly. Try 
connecting it to another product to see if the USB cable works. If you 
experience problems, the USB cable might need to be replaced. Also verify
that the cable does not exceed 3 meters (9.8 feet) in length.
7. If another USB cable is available, try using that one instead. 
8. Restart the computer. 
9. After the computer restarts, try to scan again. 
Cause: The product was not properly connected to the computer. 
If this did not solve the issue, try the next solution.
Solution 7: Scan with Windows Image Architecture (WIA)
Solution: Try scanning with Windows Image Architecture (WIA) instead of the 
HP Solution Center.
NOTE: If you are using the product with a Windows 2000 computer, some 
features may not be available. For more information, see  “Notice to Windows 2000
users” on page 218.
To scan using WIA 
1. Make sure the product is turned on. 
2. Verify that the USB cable is securely plugged into the USB port on the back of 
the product. 
The USB icon on the cable faces up when the cable is properly connected. 
3. Make sure the other end of the USB cable is plugged into a USB port on your 
computer.
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							4.On the Windows taskbar, click Start, click Programs or All Programs, and then 
click  Accessories. 
5. Click Imaging. 
6. From the Imaging application, click File and then click Select Device. 
7. Select the product from the TWAIN source list. 
8. Click File, and then click Scan New. 
Imaging for Windows will scan from the product using TWAIN software instead of 
the HP Solution Center. 
Cause: If you could scan using WIA, this indicates that there was a problem with 
the HP Solution Center. You can continue to use WIA to scan, or try the next solution. 
If you could not scan using WIA, try the next solution.
Solution 8: Disable the Lexbces service 
Solution: Check if the Lexbces service is started, and disable it. 
If a Lexmark or Dell all-in-one device is connected with a USB cable to a computer 
where product is installed, the HP software might not scan because the  Lexbces 
service is running.
NOTE: This solution only applies if you have a Lexmark or Dell all-in-one. If you 
do not,  “try the next solution” on page 152.
To check for and disable the service 
1. Log into Windows as an Administrator. 
2. Press the Ctrl + Alt + Delete to open the Task Manager. 
3. Click the Processes tab. 
4. If the Lexbceserver service is listed in the Image Name list, disable it. 
To disable the service 
a . On the Windows taskbar, click Start, right-click My Computer, and then click 
Manage . 
The  Computer Management appears. 
b . Double-click Services and Applications, and then double-click Services. 
c . In the right pane, right-click Lexbceserver, and then click Properties. 
d .On the General tab, in the Service status area, click Stop. 
e .From the Startup type drop-down menu, select Disabled, and then click 
OK . 
f . Click OK to close the dialog box.
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							5.Back up the Registry. 
To back up the Registry 
a . On the Windows taskbar, click Start. 
b . Depending on your operating system, do one of the following: 
• Windows Vista: In  Start Search, type regedit, and then press Enter. 
When the User Account Control dialog box appears, click  Continue. 
• Windows XP: Click  Run. When the Run dialog box appears, type 
regedit , and then press Enter. 
• Windows 2000: Click  Registry, and then click Export Registry 
The  Registry Editor appears. 
c .In the Registry Editor, select My Computer. 
d .With My Computer highlighted, click File, and then click Export. 
e . Browse to a storage location that is easy for you to remember; for example: 
My Documents  or Desktop. 
f .In the Export Range area, select All. 
g . Enter a filename for the backed up Registry. 
HP suggests naming the file with the current date; for example: Registry 
Backup 04_01_07. 
h . Click Save to save the Registry. 
6. Edit the registry. 
To edit the Registry 
a . Select the HKEY_LOCAL_MACHINE\System\CurrentControlSet 
\Services\Spooler  Registry key. 
Details of the Registry key appears on the pane to the right. 
b . Check the DependOnService data string (in the pane on the right) to see if 
lexbces  is listed in the Data column. 
c .If the Data column contains lexbces, right-click DependOnService and 
select  Modify. 
Do one of the following: 
• If you see only  lexbces, but not RPCSS, delete lexbces and enter 
RPCSS . 
• If you see both  lexbces and RPCSS, delete only lexbces and keep 
RPCSS . 
d . Click OK.
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							7.Restart the computer, and then try to scan again. 
If you can scan successfully, then proceed with the next step to restart the 
Lexbcserver  service.
NOTE:Restarting the service enables the normal functionality of the 
Lexmark or Dell devices without affecting HP software.
8. Restart the Lexbcserver service. 
To restart the service 
a . On the Windows taskbar, click Start, right-click My Computer, and then click 
Manage . 
The  Computer Management screen appears. 
b . Double-click Services and Applications, and then double-click Services. 
c . In the right pane, right-click Lexbceserver, and then click Properties. 
d .On the General tab, in the Service status area, click Start. 
e .From the Startup type drop-down menu, select Automatic, and then click 
OK . 
f . Click OK to close the dialog box. 
Cause: The Lexbceserver service installed by a Lexmark printer, Lexmark all-in- 
one, or Dell all-in-one, caused a scan communication error. 
If this did not solve the issue, try the next solution.
Solution 9: Run the Scan Diagnostic utility
Solution: Download and run the Scan Diagnostic utility to find and correct 
problems with your product. 
To download and run the Scan Diagnostic utility 
1. Go to: www.hp.com and click Software and driver downloads. 
2. Select Download drivers and software (and firmware). 
3. Type your product name and model number in the field provided, and then press 
Enter . 
4. Select the operating system of your computer where the HP software is installed. 
5. Go to the Utility section and download the HP Scan diagnostic utility. 
6. Try to scan. 
If an error condition is identified with any of the HP software components, a red 
X is displayed next to the component. If there is no error condition, a green check 
mark is displayed next to the component. The utility is equipped with a  Fix button 
to correct the error conditions. 
Cause: There was a problem with the connections between the product and the 
computer. 
If this did not solve the issue, try the next solution.
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							Solution 10: Install a patch 
Solution: Download and install the unexpected internal error and 
communications failure  patch. 
This patch resolves the  An unexpected internal error has occurred error and other 
communication failures with the product. 
To install the patch 
1. Go to: www.hp.com and click Software and driver downloads. 
2. Select Download drivers and software (and firmware). 
3. Select the operating system of your computer where the HP software is installed. 
4. Go to the Patch section and download the HP Image zone/photo and imaging 
unexpected internal error and communications failure patch . 
5. Double-click the patch to install it on the computer. 
6. Try to scan. 
Cause: You needed to install the unexpected internal error and 
communications failure  patch. 
If this did not solve the issue, try the next solution.
Solution 11: Check the USB chipset and controller 
Solution: Check the USB chipset and controller. 
Scan communication errors can occur because of compatibility issues with USB 
chipsets installed on the computer. This can be caused by a mismatch in the 
handshake timing between HP product chipset and certain types of USB chipsets on 
the computer. 
To check the USB chipset and controller 
1. On the Windows taskbar, click Start, right-click My Computer, and then click 
Properties . 
2. Click the Hardware tab, and then click Device Manager. 
3. Open Universal Serial Bus Controllers by clicking the plus sign (+) next to it. 
4. Check if you have one of the following chipsets listed: 
• SIS 7001 USB host controller 
• ALI chipsets 
• NEC universal host controllers 
• Intel 82801 AA, Intel 82801BA/BAM
NOTE: This is not a comprehensive list. If you are experiencing 
communication issues while trying to scan, follow the steps below to resolve 
the issue.
5. Disconnect all USB devices (printers, scanners, cameras, etc.) from the 
computer, except the mouse or keyboard. 
6. Reconnect the USB cable to the USB port on the back of the product.
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							7.Reconnect the other end of the USB cable to a USB port on your computer.
8.Make sure the power cord is firmly connected to both the product and the power 
adaptor. Plug the power cord into a grounded power outlet, surge protector, or 
power strip.
1Power connection
2Power cord and adaptor
3Grounded power outlet
9. Turn on the product. 
10. Print a self-test report to test the basic standalone functionality of the product. 
See the following procedure for more information about printing a self-test report. 
11. Try to scan. 
If the scan is successful, other USB devices connected to the computer might be 
causing the problem. 
12. If the scan is successful, then connect one USB device at a time to the computer.
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							13.Test the scanning functionality after each connection, until you identify which 
piece of equipment is causing the problem. 
14. If the product fails to scan. Or, does not establish communication with the 
computer along with any of the USB devices plugged in, then connect a powered 
USB hub between the product and the computer. 
This might help to establish, or to maintain, communication between the computer 
and the product. See the following section for more information about USB hubs. 
To print a self-test report 
1. Load letter or A4 unused plain white paper into the input tray. 
2. Press and hold the Cancel button and then press the Start Copy Color button. 
The product prints a self-test report, which might indicate the source of the printing 
problem. A sample of the ink test area of the report is shown below.
3. Make sure the test patterns show a complete grid and the thick color lines are 
complete. 
• If more than a few lines in a pattern are broken, this might indicate a problem 
with the nozzles. You might need to clean the print cartridges. 
• If the black line is missing, faded, streaked, or shows lines, this might indicate 
a problem with the black print cartridge in the right slot. 
• If any of the color lines are missing, faded, streaked, or show lines, this might 
indicate a problem with the tri-color print cartridge in the left slot. 
More information about using a USB hub 
• Verify that the USB hub is a powered hub and the power adapter is plugged in. 
Some powered hubs do not include the power adapter as a standard item. 
• The hub must be plugged into a power source. 
• Some hubs cannot handle more than four full-power USB devices. You can 
connect a maximum of fi ve hubs to the system. 
• If the product has trouble with a hub when the hubs are connected together, or 
there are more than four devices on the hub, connect the product to the hub that 
is directly connected to the computer (unless there are known issues). 
Cause: There was a compatibility issue with USB chipsets installed on the 
computer. 
If this did not solve the issue, try the next solution.
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							Solution 12: Uninstall the software and reset the product 
Solution: Uninstall the software completely, and then reinstall it. 
To uninstall the software and reset the product 
1. Disconnect and reset the product. 
To disconnect and reset the product 
a . Make sure the product is turned on. 
b . Press the On button to turn off the product. 
c . Disconnect the power cord from the back of the product. 
d . Reconnect the power cord to the back of the product. 
e . Press the On to turn on the product. 
2. Uninstall the software completely.
NOTE:It is important that you follow the uninstall procedure carefully to 
ensure you have removed the software completely from the computer, before 
reinstalling it.
To uninstall the software completely 
a . On the Windows taskbar, click Start, Settings, Control Panel, (or just 
Control Panel ). 
b . Double-click Add/Remove Programs (or click Uninstall a program). 
c . Remove all the items that are related to the HP scanning software.
CAUTION:If the computer is manufactured by HP or Compaq, do not 
remove any applications other than those listed below.
• HP Imaging device functions 
• HP Document Viewer 
• HP Photosmart Essential
• HP Image Zone 
• HP Photo and imaging gallery 
• HP Photosmart, Officejet, Deskjet, (with product name and software 
version number) 
• HP Software update
• HP Share to web 
• HP Solution Center 
•HP Director
• HP Memories Disk Greeting Card Creator 32
d .Go to C:\Program Files\HP or C:\Program Files\Hewlett- 
Packard  (for some older products) and delete the Digital Imaging 
folder. 
e .Go to C:\WINDOWS and rename the twain_32 folder to twain_32 old.
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							3.Turn off programs that run in the background.
NOTE:When the computer is turned on, a software group called the 
Terminate and Stay Resident (TSR) programs automatically loads. These 
programs activate some of the computer utilities, such as the anti-virus
software, but are not required for the computer to function. Occasionally, 
TSRs prevent the HP software from loading so that it does not install properly. 
In Windows Vista, Windows XP, and Windows 2000, use the MSCONFIG
utility to prevent TSR programs and services from starting up.
To turn off programs that  run in the background 
a . On the Windows taskbar, click Start. 
b . Depending on your operating system, do one of the following: 
• In Windows Vista: In  Start Search, type MSCONFIG, and then press 
Enter . 
When the User Account Control dialog box appears, click  Continue. 
• In Windows XP and Windows 2000: Click  Run. When the Run dialog box 
appears, type  MSCONFIG, and then press Enter. 
The  MSCONFIG utility application appears. 
c . Click the General tab. 
d . Click Selective Startup. 
e . If there is a check mark next to Load Startup Items, click the check mark to 
remove it. 
f . Click the Services tab, and select the Hide All Microsoft Services box. 
g . Click Disable all. 
h . Click Apply, and then click Close.
NOTE:If you receive a message stating Access is denied while making 
changes, click  OK and continue. The message will not prevent you from 
making the changes.
i . Click Restart to apply the changes to the computer during the next restart. 
After the computer restarts, the  You’ve used system configuration utility 
to make changes to the way windows starts  message appears. 
j . Click the check box next to Do not show this message again. 
4. Run the Disk Cleanup utility to delete temporary files and folders. 
To run the Disk Cleanup utility 
a . On the Windows taskbar, click Start, click Programs or All Programs, and 
then click  Accessories. 
b . Click System Tools, and then click Disk Cleanup. 
The  Disk Cleanup analyzes the hard drive and then presents a report with a 
list of components to delete.
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