MUTOH ValueJet 1604 Service Manual page 386

9 Troubleshooting
Table 9-5 Symptoms and Check Items for Mechanical Serious Errors (Continued)
No. Message
16 E 079 error
communica-
tion error
17 E 080 error
junction error
18 E 084 error
head
identification
19 E 085 error
head overheat
20 E 086 error
head OVP
21 E 087 error
head transistor
thermistor
Rev.-05
Event/ Check item
symptom
Abnormal • Communication
condition in cable may be faulty.
serial commu-
• F/W on controller
nication
board may be faulty.
between MAIN
• Main board
board to
assembly may be
controller
faulty.
board during
• Controller board
printing
assembly may be
operation.
faulty.
Abnormal
condition in
serial commu-
nication
between
junction board
to controller
board during
printing
operation.
Installed head Installed head is not
is incorrect. manufactured by other
vendor.
Abnormal Main board assembly
condition in may be damaged.
head driver.
Abnormal Head or head cable may
condition in be damaged.
head
Abnormal Temperature
condition in abnormality of head
head transistor transistor on MAIN
board or sensor
abnormality of
thermistor may be
occurred.
1. Check connection
between MAIN
board to controller
board.
2. Check connection
between junction
board to controller
board.
3. Check firmware
version and install
the latest version.
4. Replace controller
board or MAIN
board.
Replace head.
Replace MAIN board
assembly.
1. Check connection
of head cable.
2. Replace head.
1. Replace thermistor.
2. Replace MAIN
board.
9-24
VJ-1604 Maintenance Manual
Action Reference
"4.4.7
Replacing
MAIN
Board" p.4-
49
"5.5.2
Version
Menu" p.5-13
"7.3.5
Firmware
Installation"
p.7-16
"4.8.9
Replacing
Print Head"
p.4-115
"4.4.7
Replacing
MAIN
Board" p.4-
49
"4.8
Replacing
Cursor
Section" p.4-
106
"4.6.7
Replacing
Heater,
Thermistor"
p.4-69
"4.4.7
Replacing
MAIN
Board" p.4-
49