Repair Information; Handling Esd-Sensitive Parts; Data Security Notice - Lexmark X792 Service Manual

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.\

Data security notice

This printer contains various types of memory that are capable of storing device and network settings,
information from embedded solutions, and user data. The types of memory, along with the types of data stored
by each, are described below.
•
Volatile memory—This device utilizes standard Random Access Memory (RAM) to temporarily buffer user
data during simple print and copy jobs.
•
Non-volatile memory—This device may utilize two forms of non-volatile memory: EEPROM and NAND
(flash memory). Both types are used to store the operating system, device settings, network information,
scanner and bookmark settings, and embedded solutions.
•
Hard disk memory—Some devices have a hard disk drive installed. The printer hard disk is designed for
device-specific functionality and cannot be used for long term storage for data that is not print-related. The
hard disk does not provide the capability for users to extract information, create folders, create disk or
network file shares, or transfer FTP information directly from a client device. The hard disk can retain
buffered user data from complex print jobs, as well as form data and font data.
To erase volatile memory, turn off the printer.
To erase non-volatile memory, see the menu item under
this.
To erase the printer hard disk, see the menu item under
The printer control panel and RIP/controller board contain NVRAM. After removing the old part, it must be
returned to your next level of support.
"Configuration Menu" on page 3-29
"Configuration Menu" on page 3-29
7562
pertaining to
pertaining to this.
4-1
Repair information
Previous
Next
Go Back