Xerox 7142 Service Manual page 274

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