MUTOH ValueJet VJ-1324, Maintenance Manual, Page: 63 / 439

2.3 Troubleshooting Without Error Messages VJ1324E-M-02
2.3.3 Printing Problems P.2-49
7
Blocky printing
quality.
Blocky image printing.
CR line seems dotted.
White or black lines
appear. 3. Is suction fan run as normal when checked through "Test6: Fan"
of self-diagnosis function? • Check the connection of following MAIN
board Assy connectors.
• Suction fan relay Assy : J27
• Replace cable of suction fan Assy that does
not operate normally.
• Replace suction fan Assy .
"3.10.1 Replacing Adsorption FAN"
p.3-149
4. Is shielding material secured at specified position?
Remount it at specified position.
5. If the media in problem is roll media, does scroller rotate evenly? Adjust roll holder Assy position. Replace roll
holder Assy . "3.2.8 Removing Scroller Holder (L,
R)" p.3-18
6. Is PF belt tension adjusted to specification?
Adjust PF reduction belt tension.
"4.4 X Speed Reduction Belt
Tension Adjustment" p.4-5
7. Check the wiper condition. • Wipe the wiper surface with accessory
polynit wiper, then perform cleaning
twice consecutively.
• If cleaning wiper is sticky with ink,
replace it with a new one.
Operation Manual
8. Is nozzle face wiped normally?
Check wiper installation condition and secure
it correctly.
"3.8.5 Replacing Wiper Assy" p.3-
144
9. Is T fence contaminated? • Clean T fence.
• If T fence is still contaminated or
damaged, replace T fence.
"3.6.7 Replacing T Fence, T Fence
Spring Assy" p.3-93
10. Does pressure roller rotate harder when pressure arm is raised?
If pressure roller collects media dust on itself,
wipe dust away using a wet soft cloth.
Operation Manual
Table 2-8 Symptoms, Check Items and Actions for Printing Problems (Continued)
No. Symptoms Check Item Action Reference