Lexmark X 850 Owners Manual
Have a look at the manual Lexmark X 850 Owners Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 166 Lexmark manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
![Page 366
3-38MFP Service Manual 7500-XXX
The printer always uses media from its default input source to print this test, except when the default source only
supports envelopes. In this case, the printer automatically uses media from Tray 1. To generate the most
accurate and useful registration information, print the Quick Test on letter- or A4-size paper.
If the default input source is empty, the printer stops printing and Load [Input Source] with [Paper
Type] [Paper Size] IR appears on the LCD.
While the...](http://img.usermanuals.tech/thumb/46/102503/w64_x-850-owners-manual-1511452501_d-365.png "Page 366
3-38MFP Service Manual 7500-XXX
The printer always uses media from its default input source to print this test, except when the default source only
supports envelopes. In this case, the printer automatically uses media from Tray 1. To generate the most
accurate and useful registration information, print the Quick Test on letter- or A4-size paper.
If the default input source is empty, the printer stops printing and Load [Input Source] with [Paper
Type] [Paper Size] IR appears on the LCD.
While the...")
![Page 371
Diagnostic aids3-43
7500-XXX
Paper Prompts
When a tray is out of the indicated paper size, a prompt is sent to the user to load paper in a tray. This setting
controls the tray the user is directed to fill. Selections are Auto (default), MP Feeder, and Manual Paper.
To change this setting:
1.Touch Paper Prompts from the Configuration Menu. [settings current value] appears on the
touch-screen.
2.Touch or to scroll through the settings other possible values.
3.To exit this screen without...](http://img.usermanuals.tech/thumb/46/102503/w64_x-850-owners-manual-1511452501_d-370.png "Page 371
Diagnostic aids3-43
7500-XXX
Paper Prompts
When a tray is out of the indicated paper size, a prompt is sent to the user to load paper in a tray. This setting
controls the tray the user is directed to fill. Selections are Auto (default), MP Feeder, and Manual Paper.
To change this setting:
1.Touch Paper Prompts from the Configuration Menu. [settings current value] appears on the
touch-screen.
2.Touch or to scroll through the settings other possible values.
3.To exit this screen without...")
Diagnostic aids3-43 7500-XXX Paper Prompts When a tray is out of the indicated paper size, a prompt is sent to the user to load paper in a tray. This setting controls the tray the user is directed to fill. Selections are Auto (default), MP Feeder, and Manual Paper. To change this setting: 1.Touch Paper Prompts from the Configuration Menu. [settings current value] appears on the touch-screen. 2.Touch or to scroll through the settings other possible values. 3.To exit this screen without changing the settings value, touch Back. 4.To save the settings new value, touch Submit. Envelope Prompts This setting controls the tray the user is directed to refill when specific envelope size is out. The selections are Auto (default), MP Feeder, and Manual Env. To change the value of this setting: 1.Touch Env Prompts from the Configuration Menu. [settings current value] appears on the touch- screen. 2.Touch or to scroll through the settings possible values. 3.To exit this screen without changing the settings value, touch Back. 4.To save the settings new value, touch Submit. Jobs On Disk Jobs On Disk allows you to delete buffered jobs saved on the disk. To delete jobs saved on the disk: 1.Touch Jobs On Disk from the Configuration Menu. 2.Touch Delete to decrease the settings value; touch to increase the settings value. 3.Touch Back to cancel and return to the Configuration Menu. Disk Encryption This setting determines if the printer encrypts the information that it writes to the hard disk. The values are Disable and Enable. Warning: If the value is changed from Enable to Disable or from Disable to Enable, then the printer completely formats the hard disk. All information on the disk will be unrecoverable. To change this setting: 1.Touch Disk Encryption from the Configuration Menu. Note: If an advanced password has been established, you must enter this password in order to change the setting. If no advanced password exists, you can establish one by using the keyboard that appears on the LCD. 2.Touch Submit to save the change. 3.Touch Back to cancel and return to the Configuration Menu. If you remove an encrypted disk from a device and then try to install another disk, Disk Corrupted. Reformat? appears on the LCD. You can format the newly installed disk or remove it from the device.
3-44MFP Service Manual 7500-XXX When you touch Enable (encryption) or Disable (formatting), Contents will be lost. Continue? appears on the LCD. Touch No to cancel or Ye s to proceed. If you touch Ye s, the printer performs the selected action on the hard disk. The following graphic appears when the encryption process is selected: The following graphic appears when the formatting process is selected: Encrypting Disk 1/2 0% DO NOT POWER OFF Formatting Disk 1/2 0% DO NOT POWER OFF
Diagnostic aids3-45 7500-XXX The panel provides many progress indicators during the two-stage process. 1.1/2 indicates that the process is currently in the first stage. 2.0% indicates the progress of the current stage of the process. 3.The progress bar indicates the overall completion of the entire process by filling in throughout each separate stage. When the first stage of either process completes, the printer displays either of the following graphics depending on the process selected and then begins the second stage of the process: Encrypting Disk 2/2 0% DO NOT POWER OFF
3-46MFP Service Manual 7500-XXX The entire process is complete when the progress bar appears completely shaded and the percentage indicator shows 100%. After completion, the panel returns to Disk Encryption. Wipe Disk This setting provides you with a tool for erasing the contents of a disk. Warning: Wipe Disk removes a disks data in such a way that it cannot be recovered. To change this setting: 1.Touch Wipe Disk from the Configuration Menu. Note: If an advanced password has been established, you must enter this password in order to change the setting. If no advanced password exists, you can establish one by using the keyboard that appears on the LCD. 2.Touch Wipe disk now. Contents will be lost. Continue? appears on the LCD. 3.Touch Back to cancel and return to the Configuration Menu. Formatting Disk 2/2 0% DO NOT POWER OFF
Diagnostic aids3-47 7500-XXX If you touch No, the device cancels the Wipe Disk process and returns to the Configuration Menu. If you touch Ye s, the following screen appears: The panel provides the following progress indicators during the execution of this process: 1.1/2 indicates that the process is currently in the first stage. 2.0% indicates the progress of the current stage of the process. 3.The progress bar indicates the overall completion of the entire process by filling in throughout each separate stage. Wiping Disk ½0% DO NOT POWER OFF
3-48MFP Service Manual 7500-XXX When the first stage of the process completes, the printer displays the following graphic and then begins the second stage of the process: The entire process is complete when the progress bar appears completely shaded and the percentage indicator shows 100%. The panel returns to the screen that shows the values for the Wipe Disk setting. Font Sharpening This setting allows you to set a text point size below which the high frequency screens are used when printing font data. For example, at the default 24, all text in font sizes 24 and less will use the high frequency screens. The values for this setting range from 0 to 150. To change this setting: 1.Touch Font Sharpening from the Configuration Menu. 2.Touch to increase the value or to decrease the value. 3.Touch Back to cancel and return to the Configuration Menu. 4.Touch Submit to save the change. This setting affects the PostScript, PCL, PDF, and XL emulators. This function is not supported when the device generates output at 600 dpi resolution. Wiping Disk 2/2 0% DO NOT POWER OFF
Diagnostic aids3-49 7500-XXX Require Standby This setting determines if the Standby Mode is On or Off. The default is On. To change this setting: 1.Touch Require Standby from the Configuration Menu. 2.Touch Back to cancel and return to the Configuration Menu. 3.Touch Submit to save the change. If Standby Mode is on, the printer begins functioning in Standby Mode when it remains idle for an amount of time. The Standby Mode enables the printer: •To consume less energy than when operating in normal mode but not as little as when operating in Power Saver •To return to the Ready state more quickly than when operating in Power Saver Short Edge Printing The default printing orientation is long edge. This setting allows you to enable or prohibit short edge fed paper. If the setting Disabled (default) is selected, letter and A4 paper can only be fed long edge. If they are fed short edge, a prompt will ask you to use the correct paper size. When the setting is Enabled, you can feed paper either long edge or short edge. To change this setting: 1.Touch Short Edge Printing from the Configuration Menu. 2.Touch Back to cancel and return to the Configuration Menu. 3.Touch Submit to save the change. Tray Low Message This setting allows you to disable any Tray Low warnings that the printer may register. Touching Disabled turns off the tray low prompts. The default is Enabled. To change this setting: 1.Touch Require Standby from the Configuration Menu. 2.Touch Back to cancel and return to the Configuration Menu. 3.Touch Submit to save the change. LES Applications This disables all installed Lexmark Embedded Solution applications. The default is Enabled. To change this setting: 1.Touch LES Applications from the Configuration Menu. Note: If an advanced password has been established, you must enter this password in order to change the setting. If no advanced password exists, you can establish one by using the keyboard that appears on the LCD. 2.Touch Back to cancel and return to the Configuration Menu. 3.Touch Submit to save the change.
3-50MFP Service Manual 7500-XXX Key Repeat Initial Delay When a key is touched repeatedly, this is the delay before the key begins repeating. The delay ranges from .25 seconds to 5 seconds. The default is 1 second. Values are given in increments of .25 seconds. To change this setting: 1.Touch Key Repeat Initial Delay from the Configuration Menu. 2.Touch to increase the value or to decrease the value. 3.Touch Submit to save the change. 4.Touch Back to cancel and return to the Configuration Menu. Key Repeat Rate This is the number of times per second that a repeating key will repeat. The range is 1—100, with a default of 15 times per second. To change this setting: 1.Touch Key Repeat Initial Delay from the Configuration Menu. 2.Touch to increase the value or to decrease the value. 3.Touch Submit to save the change. 4.Touch Back to cancel and return to the Configuration Menu. Exiting Configuration Menu From the Configuration Menu, touch Back until a graphic appears with Exit Config Menu in the lower right corner. Touch Exit Config Menu to exit the Configuration Menu. Resetting the Printer appears on the LCD. The printer performs a POR, and the following graphic appears on the LCD: Copy E-Mail Fax FTP Menus Ready. Toner low. Touch any button to begin. Status/ Supplies
Repair information4-1 7500-XXX 4. Repair information Warning: Read the following before handling electronic parts. Handling ESD-sensitive parts Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent damage to ESD-sensitive parts, use the following instructions in addition to all the usual precautions, such as turning off power before removing logic boards: •Keep the ESD-sensitive part in its original shipping container (a special “ESD bag”) until you are ready to install the part into the machine. •Make the least-possible movements with your body to prevent an increase of static electricity from clothing fibers, carpets, and furniture. •Put the ESD wrist strap on your wrist. Connect the wrist band to the system ground point. This discharges any static electricity in your body to the machine. •Hold the ESD-sensitive part by its edge connector shroud (cover); do not touch its pins. If you are removing a pluggable module, use the correct tool. •Do not place the ESD-sensitive part on the machine cover or on a metal table; if you need to put down the ESD-sensitive part for any reason, first put it into its special bag. •Machine covers and metal tables are electrical grounds. They increase the risk of damage because they make a discharge path from your body through the ESD-sensitive part. (Large metal objects can be discharge paths without being grounded.) •Prevent ESD-sensitive parts from being accidentally touched by other personnel. Install machine covers when you are not working on the machine, and do not put unprotected ESD-sensitive parts on a table. •If possible, keep all ESD-sensitive parts in a grounded metal cabinet (case). •Be extra careful in working with ESD-sensitive parts when cold-weather heating is used, because low humidity increases static electricity.
4-2MFP Service Manual 7500-XXX Removal procedures CAUTION: Remove the power cord from the printer or electrical outlet before connecting or disconnecting any cable or electronic board or assembly for personal safety and to prevent damage to the printer. Disconnect any connections between the printer and PCs/peripherals. The MFP weighs approximately 70 kg (154 lb) and requires at least four people to lift it safely. Make sure your fingers are not under the MFP when you lift or set it down. Parts removal and replacement procedures are described in this chapter. Note: Parts are controlled as spare parts. When servicing parts for which no procedure is described, observe the assembly before starting the service. Note: Though the optional parts are assumed to be removed, they may not be removed if not required for the purpose of service. Before starting service work CAUTION: While performing service around the fuser assembly, ensure the fuser area has cooled down. Note: A wide variety of screws are used; make note of their positions during service.