Xerox 7142 Service Manual page 310

9 Troubleshooting
Table 9-12 Symptoms, Check Items, and Actions for Noise Problems(Continued)
No. Symptom
3
4 Abnormal noise is
heard during media
feeding.
Check item
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.
7. Is abnormal noise
heard from CR driven
pulley bearing?
8. Is CR belt tension
adjusted to
specification?
9. Is abnormal noise
heard from CR motor
assembly?
1. Is PF speed reduction
belt slipping between
PF speed reduction
pulleys?
2. Is abnormal noise
heard from PF motor
assembly?
3. Is rough surface of
grid roller partially
worn out?
4. Is grid roller rotation
heavy? Does rattling
occur when it rotates?
9-66
RJ-901C/RJ-900C Maintenance Manual
Action
• 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.
Replace it.
Adjust CR belt tension.
Replace CR motor assembly.
Replace PF speed reduction
belt.
Replace PF motor assembly.
If grid roller is contaminated
with media dust, clean roller
with a nylon brush.
Reference
"4.10.3
Replacing CR
Tape Wire"
p.4-68
"4.5.5
Replacing CR
Driven Pulley"
p.4-36
"7.6 CR
Belt Tension
Adjustment"
p.7-25
"4.5.1 CR
Motor
Assembly"
p.4-30
"4.4.1
Replacing PF
Motor
Assembly"
p.4-26
"4.4.1
Replacing PF
Motor
Assembly"
p.4-26
Operation
Manual