MUTOH Valuevet VJ-628X Maintenance Manual page 47

2.3 Troubleshooting Without Error Messages
No. Symptom
12 There are unwanted dots 11. Is the nozzle surface correctly wiped?
(satellites).
Lines are printed blurry
(messy printing result)
(Continued)
12. Is the rank of Head actually installed the same as the
13. Is Pump rotating during cleaning operation?
14. Is Ink tube folded?
15. Is ink adhered on the surface of Head or inside
16. Head may be damaged.
17. MAIN board may be damaged.
2.3.3 Printing Problems
Table 2-8 Symptoms, Check Items and Actions for Printing Problems(Continued)
Check item
registered rank?
nozzles?
Action
Confirm the mounting status of Wiper, and fix it
correctly.
Input the correct Head rank.
• Correctly plug the connector of MAIN
board again.
• Replace Pump.
• Replace MAIN board.
• Replace Ink tube and see if the cleaning
operation makes the ink flow.
• When ink flow is confirmed, perform initial
ink charge again.
Follow the procedure below to perform Head
cleaning.
1. Perform Head cleaning in "Adj.: HeadWash" in
the self-diagnosis function.
2. Perform Initial ink charge in "Update1: Head
Rank".
3. Check the printing status again.
Replace Head.
Replace MAIN board.
VJ628XE-M-00
Reference
"3.10.6Replacing Cap Head
Assy
"3.6.8Replacing T Fence
"3.5.10Replacing MAIN Board
"3.10.7Replacing Maintenance
Assy
"3.9.4Replacing Ink Tube
"5.5Ink Charging Menu
"5.6.9Longstore Menu
"(2)Head Rank
3.8.15 Replacing Head
"3.5.10Replacing MAIN Board
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