MUTOH ValueJet 1604 Service Manual page 418

9 Troubleshooting
Table 9-9 Symptoms, Check Items and Actions for Printing Problems (Continued)
No. Symptom
12
13 Mixed color lines are
not overlaid.
14 Black and other colors
do not align.
Rev.-05
Check item
17. Main board assembly
may be damaged.
1. Is CR belt tension
adjusted to
specification?
2. Is registered head rank
different from actual
head rank?
3. Is head slant
inappropriate?
4. Are bi-directional
printing positions
aligned correctly?
5. Is CW adjustment
inappropriate?
1. Check if CR_ENC
assembly and T fence
contact with each
other.
9-56
VJ-1604 Maintenance Manual
Action
Replace MAIN board
assembly.
Adjust CR belt tension.
Enter correct head rank.
Adjust head slant.
Align bi-directional printing
positions.
Perform CW adjustment.
• If they contact with each
other, adjust CR_ENC
assembly and T fence
positions.
• If problem remains even
after position
adjustment, replace CR
board assembly and T
fence.
Reference
"4.4.7
Replacing
MAIN Board"
p.4-49
"7.7 CR
Speed
Reduction Belt
Tension
Adjustment"
p.7-32
"(1) Head
Rank" p.5-56
"7.7 CR
Speed
Reduction Belt
Tension
Adjustment"
p.7-32
"5.7.5 Uni-
D/Bi-D Low/
High
Adjustment"
p.5-35
"5.7.5 Uni-
D/Bi-D Low/
High
Adjustment"
p.5-35
"4.8.3
Replacing CR
Board
Assembly"
p.4-107
"4.7.4
Replacing T
Fence" p.4-92