MUTOH ValueJet Service Manual page 364

Table 9-9 Symptoms, Check Items and Actions for Printing Problems (Continued)
No. Symptom
7 Blocky printing
quality.
8 Blocky image printing.
9 CR line seems dotted.
10 White or black lines
appear.
AP-74109 Rev 1.1
Check item
11. Does pump motor
rotate during cleaning
operation?
12. When cleaning
operation is
performed, does
transmission gear
rotate properly?
13. When cleaning
operation is
performed, are gears
and transmission gear
shaft damaged?
14. Is spring of ink system
assembly detached or
damaged?
15. Is ink tube in ink
system assembly bent?
16. Is registered head
voltage different from
actual head voltage?
9-50
ValueJet 1304 Service manual
Action
• Reconnect main board
assembly connector J22,
J23.
• Replace pump motor
assembly.
• Replace main board
assembly.
Replace maintenance base
assembly.
Replace maintenance base
assembly.
• If the part is detached,
remount it.
• If the part is damaged,
replace ink system
assembly.
• Replace ink system
assembly and check if
cleaning operation
causes ink inflow.
• If ink inflow is
confirmed, execute
initial ink charge.
Enter correct head voltage.
Reference
"4.3.3
Replacing
Main Board
Assembly"
p.4-29
"4.7.1
Removing
Maintenance
Base
Assembly"
p.4-71
"4.3.3
Replacing
Main Board
Assembly"
p.4-29
"4.7.1
Removing
Maintenance
Base
Assembly"
p.4-71
"4.7.1
Removing
Maintenance
Base
Assembly"
p.4-71
"4.7.2
Replacing
Maintenance
Assembly"
p.4-76
"4.7.2
Replacing
Maintenance
Assembly"
p.4-76
"(1) Head
Rank" p.5-57