HP LaserJet 4 Service Manual - Page 66
Engine Test
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Figure 3-6 Test Print Pattern Pressing the Test Print button will initiate a 15 ENGINE TEST. This is an engine test only. The Format PCA is bypassed while printing this test, although a formatter problem can interfere with this test. A page of vertical lines is printed if the print engine is operating correctly (see Figure 3-6). 3-30 Configuration
Pressing the Test Print button will initiate a
15 ENGINE TEST
.
This is an engine test only. The Format PCA is bypassed while
printing this test, although a formatter problem can interfere
with this test. A page of vertical lines is printed if the print
engine is operating correctly (see Figure 3-6).
Figure 3-6
Test Print Pattern
3-30 Configuration