ENWW Chapter 3 Operation 71
Diagnostics menu
Administrators can use this menu to isolate parts and to troubleshoot jam and print-quality 
issues.
The following table lists the settings and possible values. In the Values column, the default value 
for each setting is the one with an asterisk (*) next to it.
Table 17.  Diagnostics menu
Item Values Explanation
PRINT EVENT LOG There is no value to 
select.
Press  (SELECT) to generate a list of the 50 most 
recent entries in the event log. The printed event log 
shows error number, page count, error code, and 
description or personality.
SHOW EVENT LOG There is no value to 
select.
Press  (S
ELECT) to scroll through the contents of the 
event log at the control panel and shows the 50 most 
recent events. Use   (U
P arrow) or   (DOWN arrow) to 
scroll through the event log contents.
PAPER PATH TEST There is no value to 
select.
Generates a test page that is useful for testing the 
paper-handling features of the printer. The following four 
menu items appear after you select PAPER PATH TEST and 
press  (SELECT).
PRINT TEST 
PAGE
There is no value to 
select.
Press  (S
ELECT) to start the paper path test using the 
source (tray), destination (output bin), duplex, and number 
of copies settings that you set in the other items on the 
PAPER PATH TEST menu. Set the other items before 
selecting PRINT TEST PAGE.
SOURCE ALL TRAYS
TRAY 1
*TRAY 2
TRAY 3
Select the tray that uses the paper path you want to test. 
You can select any tray that is installed. Select ALL TRAYS 
to test all tray paper paths. (Paper must be loaded in the 
selected trays.)
DUPLEX *OFF
ON
Determine whether or not the paper goes through the 
duplexer during the paper-path test. The menu item 
appears only if the printer includes a built-in duplexer 
(HP LaserJet 2300d printer, HP LaserJet 2300dn printer, 
and HP LaserJet 2300dtn printer).
COPIES *1
10
50
100
500
Set how many sheets of paper are used from each tray 
during the paper-path test. If you are testing the optional 
stapler stacker (DESTINATION item), select 10 or higher.