Xerox 7142 Service Manual - page 274
9 Troubleshooting
RJ-901C/RJ-900C Maintenance Manual
9-30
14
E 075 error H
overcurrent
Abnormal
condition in
print head
during plotter
operation due
to overload.
1. Check connection
of head cable
connectors on CR
board assembly side
and head side.
•
Is head cable
inserted obliquely?
•
Is it locked
securely?
Reconnect head cable.
"4.6.1
Replacing
Print Head"
p.4-37
"4.10.1
Replacing CR
Board
Assembly"
p.4-64
2. CR board assembly
may be damaged.
•
Replace CR board
assembly.
"4.10.1
Replacing CR
Board
Assembly"
p.4-64
•
Cancel head error.
"6.3.2
Counter
Initialization
Menu" p.6-6
3. Main board
assembly may be
damaged.
•
Replace main board
assembly.
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
•
Cancel head error.
"6.3.2
Counter
Initialization
Menu" p.6-6
4. Print head assembly
may be damaged.
•
Replace Print head
assembly.
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
•
Cancel head error.
"6.3.2
Counter
Initialization
Menu" p.6-6
15
E 077 error
H overheat
Abnormal
condition in
head driver.
1. Main board
assembly may be
damaged.
Replace main board
assembly.
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
Table 9-7 Symptoms and Check Items for Mechanical Serious Errors (Continued)
No.
Message
Event/
symptom
Check item
Action
Reference