MUTOH ValueJet 1604 Service Manual page 422

9 Troubleshooting
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
Rev.-05
Check item
1. Is registered head rank
different from actual
head rank?
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 "Adj 3:
HeadSlant" are not
connected even though
nozzle check pattern
from "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 "Test
6: Fan" of self-
diagnosis function?
9-60
VJ-1604 Maintenance Manual
Action
Enter correct head rank.
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 relay 1 - 4
assembly: J25 - J29
• Replace suction fan
assembly.
• Replace cable of suction
fan that does not operate
normally.
Reference
"(1) Head
Rank" p.5-56
"7.7 CR
Speed
Reduction Belt
Tension
Adjustment"
p.7-32
"7.7 CR
Speed
Reduction Belt
Tension
Adjustment"
p.7-32
"5.7.5 Uni-
D/Bi-D Low/
High
Adjustment"
p.5-35
"4.7.4
Replacing T
Fence" p.4-92
"4.7.8
Replacing
CR_FFC" p.4-
100
-
"4.6.8
Replacing
Suction Fan"
p.4-77