Service Manual
19
Test prints for printers serial-numbered
BC
xxxxx
and up (Version 2 printers).
Printers serial numbered BC
xxxxx and up.
Service Test Print 1 - Jstep5.
While this print can
be printed in 300 dpi, it should only be printed and
interpreted in 600 x 300 dpi. This print reveals
problems with the x-axis motion of the printhead.
Look for: Unusually wide white gaps or thick black
lines between the thin, vertical black lines. The thin
lines should be evenly spaced and consistent across
the width of the page.
Causes: Gaps could either be caused by a
defective x-axis drive or by something, such as a
wiring harness interfering with the horizontal
movement of the printhead. The ink loader, without
the top cover installed to secure it in place, may rest
too low and interfere with the printhead’s motion. In
this case the ink loader should rest on extrusions on
the printer’s side frames
Printers serial numbered BC
xxxxx and up.
Service Test Print 2 - Weak jet. This print shows
which jets are not outputting enough, if any, ink
compared to its neighboring jets. Note that the
yellow jets bands have a small amount of cyan ink
added to them, which tints them green, to make
them more visible.
Look for: No interlacing is used in this print; expect
light/dark variation between jets. Look for
much
lighter colored vertical bands in the horizontal bars.
Weak jets in the yellow band are distinguished by a
cyan tint.
Causes: A jet may be partially clogged; perform
printhead clean/purge cycles on the printhead to
remove contaminants from the poor performing jet.
Turn the printer off for 2 to 3 hours (or overnight, if
practical). Then perform clean/purge cycle again.
As a last resort, replace the printhead.
Gaps
9100-113
1 2 3 4
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
5
1 2 3 4
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
5
1 2 3 4
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
5
1 2 3 4
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
5
74 75 76 77 78 79 80
Weak jet
9100-114
