HP 4100tn - LaserJet B/W Laser Printer - Page 194

192 Troubleshooting EN
Print the event log
The printer’s internal event log stores the last 20 errors and can be printed at any time. To print the
event log:
1 Press M
ENU
until
INFORMATION MENU
appears.
2 Press I
TEM
until
PRINT EVENT LOG
appears.
3 Press S
ELECT
to print the event log.
Display the event log
If the printer cannot print or move any media, follow these steps to display the event log.
1 Press M
ENU
until
INFORMATION MENU
appears.
2 Press I
TEM
until
SHOW EVENT LOG
appears.
3 Press S
ELECT
to show the event log. The control panel will show the sequence, the error type,
and the page count at which it occurred.
4 Press + to scroll through the event log.
5 Write down the error messages.
6 Check the event log for specific error trends in the last 10,000 printed pages.
7 Ask the customer for any observed error trends. (For example, do jams tend to occur in a specific
area of the printer?)
8 Record any specific error trends.
9 If the control panel displays
READY
,
OFFLINE
, or
POWERSAVE ON
, go to the next section. If it displays
any other message, refer to the printer messages table starting on page 194 and perform the
necessary corrective action.
Interpret the event log
The event log is the key tool in troubleshooting printer problems. Figure 94 on page 191 shows a
typical event log. The event log shows the current page count at the top left of the page with the
printer’s serial number directly to the right of the page count. The left column is the error sequence
number (the highest sequence number is the most recent error logged). The second column is the
error type. The next column is the page count at the time of the error, and the last column is the
personality (PCL or PostScript) column or the cause of the jam at the time of the error.
To interpret the event log:
!
Each individual entry in the log is called an “error,” while all errors occurring at the same page
count are called an “event.” Read the recommended action for each error comprising an event to
gain a clear picture of what took place during that event.
!
Use the printer messages table in this section to associate errors in the event log with the control
panel error message. Follow the recommended action listed in the table for each error or event.