Mpu Phasing Test - All H's - Printronix P6000 Series Maintenance Manual

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4-5. Performance Tests
c. MPU Phasing Test - All Hs (Figure 4-34)
1. Load printer with full width single part paper.
2. Set Exerciser controls as follows:
LINE LENGTH = 132
CHARACTER = H
SPECIAL = NONE
FUNCTION = LINE FEED
3. Place printer online. Print one-half page of the letter H and take printer offline.
4. Examine printout for vertical alignment of dots in alternate dot columns. If dots are stag
gered more than 0.005 inch, perform MPU phasing adjustment per paragraph 5-11.
4-74
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Figure 4-34. MPU Phasing Test - All Hs
P6040/P6080 Troubleshooting