Xerox 7142 Service Manual - page 273
RJ-901C/RJ-900C Maintenance Manual
9 Troubleshooting
9-29
11
E 073 error
Y origin
CR_HP
detection is not
possible.
1. Check CR_HP
sensor from "Sen:
CR Origin" of self-
diagnosis function.
•
Check connection
of CR_HP sensor
cable assembly
connector.
"5.4.4
Sensor
Menu" p.5-13
2. CR_HP sensor may
be damaged.
•
Replace CR_HP
sensor.
"4.5.2
Replacing
CR_HP
Sensor" p.4-
31
3. Main board
assembly may be
damaged.
•
Replace main board
assembly
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
12
E 074 error
cover
Abnormal
condition in
cover sensor.
1. Check cover sensor
from "Sen: Cover"
of self-diagnosis
function.
•
Check connection
of cover sensor
assembly
connector.
"5.4.4
Sensor
Menu" p.5-13
2. Cover sensor
assembly may be
damaged.
•
Replace cover
sensor assembly.
"4.8.3
Replacing
Cover Sensor
Assembly"
p.4-60
13
3. 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