Xerox 7142 Service Manual - page 310
9 Troubleshooting
RJ-901C/RJ-900C Maintenance Manual
9-66
3
5. Does the cable
connected to CR board
assembly on carriage
contact with CR
cover?
6. Check if TF_ENC
assembly and T fence
contact with each
other.
•
If they contact with each
other, adjust TF_ENC
assembly and T fence
positions.
•
If problem remains even
after position
adjustment, replace
TF_ENC assembly and
T fence.
"4.10.3
Replacing CR
Tape Wire"
p.4-68
7. Is abnormal noise
heard from CR driven
pulley bearing?
Replace it.
"4.5.5
Replacing CR
Driven Pulley"
p.4-36
8. Is CR belt tension
adjusted to
specification?
Adjust CR belt tension.
"7.6 CR
Belt Tension
Adjustment"
p.7-25
9. Is abnormal noise
heard from CR motor
assembly?
Replace CR motor assembly.
"4.5.1 CR
Motor
Assembly"
p.4-30
4
Abnormal noise is
heard during media
feeding.
1. Is PF speed reduction
belt slipping between
PF speed reduction
pulleys?
Replace PF speed reduction
belt.
"4.4.1
Replacing PF
Motor
Assembly"
p.4-26
2. Is abnormal noise
heard from PF motor
assembly?
Replace PF motor assembly.
"4.4.1
Replacing PF
Motor
Assembly"
p.4-26
3. Is rough surface of
grid roller partially
worn out?
4. Is grid roller rotation
heavy? Does rattling
occur when it rotates?
If grid roller is contaminated
with media dust, clean roller
with a nylon brush.
Operation
Manual
Table 9-12 Symptoms, Check Items, and Actions for Noise Problems(Continued)
No.
Symptom
Check item
Action
Reference