04 Self Test; Test Print (15 Engine Test) - HP LaserJet II Serie Manual De Instrucciones

HP 33440/HP 33W9 CQMBIWD SERVICE MANUAL
04 SELF TEST
Holding down the
(PRINT FONTS/TEST)
key until 04 SELFTESTis displayed (about 5 seconds) will
cause a continuous self test to be run using the 05 SEW TEST printout page. The continuous
self-test mode is a good way to test the paper path since it only tests the electronics once while
continuing to print out the self-test page. Pressing the
PRINT FONTS/TEST
)) -, or
(CONTI NU E/RESET)
key terminates the continuous test mode. The numeric portion of the message
will flash while the self test is being aborted.
Note
Bemuse of the complex graphics on the Self-Test page, printing speed for the HP
33449 til be less than the full eight-page-per-minute rated level.
Test Print (15 ENGINE TEST)
Activating the TEST PRINT switch– accessed by inserting a pen or pencil into the hole on the
lower right side of the printer (Figure 3-9) (behind a cover panel on the HP 33449) – causes a
page of vertid lines (shown in Figure 3-10) to be printed. While printing, the display will read
15 ENGINE TEST.This is an en~ne test only since the Interface PCA is completely bypassed to
produce this print. It is useful to verify proper operation of the DC Controller circuitry and all
other print engine components (i.e., everything but the Interface/Formatier PCA). Holding down
this bution
will
produce continuous pages until the button is released.
Figure 3-9. Selecting the Test Print Switch (HP 33440 shown here)
f 1
Figure 3-10. Portion of Test Print Pattern
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