General; Using Setice Mode - HP LaserJet II Serie Manual De Instrucciones

HP 33440/HP 33449 COMBINED SERVICE MANUAL
3-7. SERVICE MODE
General
Service Mode should only be used by service representatives. It etists to allow the page count
(which measures the life of the print engine) to be reset in the event the Interface PCA is replaced
and to print a test pattern which is useful for print quality analysis.
Note
For the ~ 33449, Service Mode messages are not lodzed (except for cetin
messages, such as 05 SELFTEST,which are used in both user and Service Mode).
Using Service Mode
To access Service Mode
1. Hold down the (-j, the
[CONTINUE/RESET],
and the
ENTER/RESET MENU
keys
simultaneously for at least one second while powering on the printer. This interrupts the
normal initial non-printing self test. If Service Mode has been properly selected, the display will
be blank and dl four LEDs will be illuminated.
2.
Press the
(CONTINUE/RESET)
key once only. Then press the
(ENTER/RESET MENU) key.
3.
The display will read SERVICE
MODE
(not
iodized) and dl four LEDs on the Control Panel will
still be illuminated.
Note
Any attendance message, such as 16 TONER LOW, w in override the SERVICEMODE
PI
display. However, the printer is .in service mode at this time if the preceding
w
steps were performed.
4.
Mthough the procedures are essentially the same, timing for the HP 33440 and HP 33449 differ
at this point
HP 33440
~er from 5 to 30 seconds, depending upon instiled memory, 05 SELFTEST
will be displayed and dl four lights on the Control Panel will turn off. After
about five seconds, 02 WARMING U Pwill be briefly displayed, after which the
printer will again display SERVICEMODE and the ready indicator (only) will
illuminate.
HP 33449
~er less than one second,
05
SELFTEST (not iodized) will be displayed
and dl four lights on the Control Panel will remain lit for up to 60 seconds,
depending upon intiled memory, then turn off for about 10 seconds, after
which the printer will again display SERVICEMODE and the ready indicator
(only) till
illuminate.
If the self test fails, the printer will display the same error message that it normally would.
5.
To exit Service Mode for either printer, press either the (~j or the ~~] key. To
return the HP 33440 on line, the [-) key must be pressed again.
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