MUTOH ValueJet 1604 Service Manual page 414

9 Troubleshooting
Table 9-9 Symptoms, Check Items and Actions for Printing Problems (Continued)
No. Symptom
7 Blocky printing
8
quality.
9
Blocky image printing.
10
CR line seems dotted.
White or black lines
appear in printing.
Rev.-05
Check item
17. Does residual ink
collect on head
assembly or in
nozzles?
18. Is print head damaged? Replace damaged print head.
19. Are the following self-
diagnosis functions
judged as normal when
checked with specified
cartridge securely
inserted?
- Detection of presence
of ink from "Ctrl 2:
Sensor" -> "Sen.3: etc"
-> "11: Ink NOT"
- Detection of presence
of cartridge from "Ctrl
2: Sensor" -> "Sen.3:
etc" -> "12: Ink END"
20. CR board assembly
may be
malfunctioning.
21. Main board assembly
may be damaged.
9-52
VJ-1604 Maintenance Manual
Action
Clean head as follows.
1. Clean head through
"Adj 9: HeadWash" of
self-diagnosis function.
2. Perform initial charge
through "Update 1: Head
Rank".
3. Check plotouts again.
• Follow the steps for the
message "[KCMY] No
Cartridge".
• After adjustment/
replacement, execute
initial ink charge from
"Update 1: Head Rank"
of self-diagnosis
function.
Replace CR board assembly.
Replace MAIN board
assembly.
Reference
"5.7.8
HeadWash
Menu" p.5-43
"(1) Head
Rank" p.5-56
"4.8.9
Replacing
Print Head"
p.4-115
"(1) Head
Rank" p.5-56
"4.8.3
Replacing CR
Board
Assembly"
p.4-107
"4.4.7
Replacing
MAIN Board"
p.4-49