MUTOH ValueJet Service Manual page 372

Table 9-9 Symptoms, Check Items and Actions for Printing Problems (Continued)
No. Symptom
18 Poor linearity in media
feed direction (media
splicing accuracy)
19 Poor right angle
accuracy
AP-74109 Rev 1.1
Check item
1. Is registered head
voltage different from
actual head voltage?
2. Adjust head slant.
3. Is CR belt tension
adjusted to
specification?
4. Are Bi-Directional
printing positions
aligned correctly?
5. Is T fence
contaminated?
6. Check if vertical lines
plotted from "Check4:
Adjustment" - "Adj 3:
HeadSlant" are not
connected even though
nozzle check pattern
from "Check4:
Adjustment" - "Adj 1:
NozzleChk" of self-
diagnosis function is
adjusted properly.
7. Is carriage assembly
loose?
1. Is suction fan judged
as normal when
checked through
"Test6: Fan" - "Fan1:
Vacum Fan" of self-
diagnosis function?
9-58
ValueJet 1304 Service manual
Action
Enter correct head voltage.
Adjust head slant.
Adjust CR belt tension.
Align two-way printing
positions.
Clean T fence.
If T fence is still
contaminated or damaged,
replace T fence.
Replace steel bearer
assembly.
Replace carriage assembly.
• Check connection of
following maintenance
board assembly
connectors.
• Suction fan 1 - 4
assembly: J25 - J29
• Replace suction fan
assembly.
• Replace cable of suction
fan that does not operate
normally.
Reference
"(1) Head
Rank" p.5-57
"7.6 CR
Belt Tension
Adjustment"
p.7-35
"7.6 CR
Belt Tension
Adjustment"
p.7-35
"5.7.6 Uni-
D / Bi-D Low
and High
Adjustment"
p.5-36
"4.5.4
Replacing T
Fence" p.4-55
"4.10.3
Replacing CR
Tape Wire"
p.4-97
-
"4.9.1
Replacing
Suction Fan
Assembly"
p.4-89