Xerox 7142 Service Manual - page 308

9 Troubleshooting

RJ-901C/RJ-900C 　 Maintenance Manual

9-64

9.3.4

Noise Problems

22

2. Does pressure roller 

rotate harder when 

pressure arm is raised?

If pressure roller collects 

media dust on itself, wipe 

dust away using a wet soft 

cloth.

Operation 

Manual

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

No.

Symptom

Check item

Action

Reference

1

Abnormal noise is 

heard when media is 

suctioned.

1. Are there any foreign 

objects or obstacles 

around rotating fin of 

suction fan assembly?

Remove obstacles and 

foreign objects.

"4.9.1 

Replacing 

Suction Fan 

Assembly" 

p.4-62

2. Check damage of 

cables and connection 

of connectors. 

If damaged, replace damaged 

part. 

-

3. Suction fan assembly 

may be defective.

Replace suction fan 

assembly. 

"4.9.1 

Replacing 

Suction Fan 

Assembly" 

p.4-62

4. Main board assembly 

may be 

malfunctioning.

Replace main board 

assembly.

"4.9.1 

Replacing 

Suction Fan 

Assembly" 

p.4-62

5. Power board assembly 

may be defective.

Replace power board 

assembly. 

"4.3.4 

Replacing 

Power Board 

Assembly" 

p.4-22

Table 9-11  Symptoms, Check Items and Actions for Printing Problems(Continued)

No.

Symptom

Check item

Action

Reference