RJ-901C/RJ-900C Maintenance Manual 9 Troubleshooting
9-65
2 Abnormal noise in
waiting mode
1. Are there any foreign
objects or obstacles at
noise-generating
position?
Remove obstacles and
foreign objects.
-
2. Is abnormal noise
heard from board?
Replace applicable one of the
following board assemblies.
• Power board assembly
• Main board assembly
• CR board assembly
• Print head assembly
"4.3.4
Replacing
Power Board
Assembly"
p.4-22
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
"4.6.1
Replacing
Print Head"
p.4-37
3 Abnormal noise is
heard while head is
moving laterally.
1. Does customer
recognize ink
discharge noise as
abnormal noise?
Explain machine operations. -
2. Is abnormal noise
caused by loose screw
in covers?
Additionally tighten screws. "4.2
Removal of
Covers" p.4-5
3. Is rattling noise heard
when moving carriage
laterally?
• Remove dust from
carriage bearing and
roller strip.
• After cleaning roller
strip, always apply thin
lubricant film over its
surface using a grease-
sprayed cloth.
-
4. Is abnormal noise
heard from CR cable?
• Remove twists from CR
cable.
• If abnormal noise sounds
from between steel
bearer and tube guide,
replace tube guide.
"4.10.3
Replacing CR
Tape Wire"
p.4-68
Table 9-12 Symptoms, Check Items, and Actions for Noise Problems(Continued)
No. Symptom Check item Action Reference
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