OKI C7350DTN User Manual
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C7350/7550 User’s Guide: Troubleshooting • 531 USB Problems Cannot configure for USB connection NOTE • Windows 95 and NT 4.0 do not support USB. • Windows 98 upgraded from Windows 95 may not support USB. • Windows 98 original installation and Windows Me, 2000, and XP all support USB. Possible cause Remedy Computer does not support USB interface.Check if there is a USB controller in the Windows device manager. USB cable does not meet specifications.Use USB cable to specification Ver.1.1. Interface is disabled. Check that USB interface is set to Enable. Configuration procedure was not correctly followed or cancelled.Configure again from the beginning. USB cable is disconnected or faulty.Reconnect or try another cable. A USB hub is being used.The printer cannot be used with a USB hub. Connect the printer and computer directly. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 532 USB Problems Cannot print •LPT WRITE ERROR is displayed (Windows only). • PRNUSBX WRITE ERROR is displayed. Possible causeRemedy Interface is disabled. (Windows only)In the printer menu settings, enable Parallel or USB interface. See “Parallel Menu” on page 100 or “Parallel Menu” on page 100 (Windows only) Printer is switched OFF.Switch ON. Printer interface cable is disconnected.Reconnect the printer interface cable. A converter, buffer, extension cable or USB hub is being used.Test by connecting the printer and computer directly. Printer driver output port is incorrect.Set correct output port to which the printer interface cable is connected. Printer is not selected in the printer driver.Select the printer or set to default printer. Incorrect printer driver is being used.Delete this printer driver and install correct printer driver. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 533 Application Error or General Protection Fault Possible causeRemedy Application is not suitable for Windows version. (Windows only)Upgrade the application. (Windows only) Memory is insufficient for number of applications running.Close all other applications. Print file is corrupted.Correct or recreate the file. Memory is insufficient for application.Increase computer’s memory. See “Memory (Additional)” on page 539 Insufficient free space on hard disk.Delete unnecessary files. Printer driver is incorrectly configured.Correctly configure printer driver. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 534 Paper Size Change request Possible causeRemedy Paper loaded in tray is different size from that formatted in software application.Either change paper in tray to match size formatted in application and press ONLINE to continue, or Continue printing on existing paper by pressing ONLINE. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 535 Printer does not go online Printer makes a strange noise Possible causeRemedy Bad connection Turn off the printer. Disconnect the power cable. Reconnect power cable. Turn on the printer. If this does not clear the fault, call for service. Possible causeRemedy The printer is not horizontal.Place the printer on a stable, level surface. There are scraps of paper or other foreign matter inside the printer.Check the inside of the printer and remove any such objects. The top cover is not firmly shut. Press the left and right sides of the top cover. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 536
Printer takes a long time to start printing
Possible causeRemedy
The printer has to warm
up returning from
power save mode.In the printer menu settings, set power save
to a higher value to increase the length of time
before entering power save mode.
See “POWER SAVE Mode” on page 45.
The printer is cleaning
the image drum. This
helps ensure good print
quality. The cleaning
p r o c e s s t a k e s t i m e . Wait until this process has been completed.
The printer is adjusting
the temperature of the
fuser.
This takes time.Wait until this process has been completed.
The printer is
processing data from
another interface. Wait until this data is processed.
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C7350/7550 User’s Guide: Troubleshooting • 537
Printing is slow
Printing does not start
Printing cancels
Possible causeRemedy
Print processing is
carried out by the
computer.Use a computer with a faster processor.
Print resolution is
set high.Set lower print resolution in the printer driver.
Data is too complex. Simplify data.
Possible causeRemedy
Printer error Check the control panel. If an error message is
displayed, correct the problem.
Possible causeRemedy
The printer interface
cable is faulty.Replace the printer interface cable.
The time out setting is
too short.Reset time out to a higher value.
See Manual Timeout and Wait TImeout items
of the “System Configuration Menu” on
page 86.
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C7350/7550 User’s Guide: Accessories • 538 Accessories Depending on the configuration of your printer, you may wish to add one or more of the following options as your needs evolve: •Memory (see page 539) •Hard Disk Drive (see page 545) •Duplex Unit (see page 549) •Paper Trays (see page 550) Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Accessories • 539 Memory (Additional) When to Install Adding memory increases the printer’s capacity to process complex data. You should add memory if: •you use duplex printing •error messages appear when printing complex data. •you run graphic-intensive applications on Networks. Available Amounts Additional Memory is available in modules of: •64Mb •128Mb •256Mb Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Accessories • 540 Memory How to Install 1.Turn off the printer. 2.Disconnect the power cable and printer interface cable. 3.Loosen the two screws (1) and remove the main board. mother board remove.eps Downloaded From ManualsPrinter.com Manuals