MUTOH ValueJet Service Manual page 336

Table 9-5 Symptoms and Check Items for Mechanical Serious Errors (Continued)
No. Message
13 E078Err After
Heat
14 E079Err
Commu.
15 E080Err
Junction
AP-74109 Rev 1.1
Event/ Check item
symptom
Abnormal Disconnection of
condition in connector, wrong
after-heater wiring, or heater
system malfunction of
(thermistor, thermistor and heater
heater). may be occurred.
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
damaged.
board during
printing • Controller board
assembly may be
operation.
faulty.
• Power board
assembly may be
damaged.
Abnormal
condition in
serial commu-
nication
between
junction board
to controller
board during
printing
operation.
ValueJet 1304 Service manual
1. Reconnect
connector of
thermistor and
heater.
2. Check connection
of board section.
3. Replace heater.
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.
5. Replace power
board assembly.
9-22
Action Reference
"4.4.4
Replacing
Heater and
Thermistor
Assembly"
p.4-49
"4.3
Replacement
of Board Base
Section
Components
" p.4-23
"4.3
Replacement
of Board Base
Section
Components
" p.4-23
"5.5.2
Version
Menu" p.5-13
"7.3.5
Firmware
Installation"
p.7-21
"4.3.6
Replacing
Power Board
Assembly"
p.4-35