Noise Problems - MUTOH Valuevet VJ-628X Maintenance Manual

2.3 Troubleshooting Without Error Messages
2.3.4

Noise Problems

No. Symptom
1 Abnormal noise is heard
when media is sucked
2 Abnormal noise is heard
during waiting time
2.3.4 Noise Problems
Table 2-9 Symptoms, Check Items, and Actions for Noise Problems
Check item
1. Are there any contact substances or foreign substances
around the rotating fin of Suction FAN?
2. Check the damage of the cable and connection of the
connector.
3. Suction FAN itself may be faulty.
4. MAIN board may be damaged.
5. Power board may be damaged.
1. Are there any contact substances or foreign substances
at the area where noise is coming from?
2. Is the noise coming from Board ?
Action
Check the damage of the cable and connection
of the connector.
If damaged, replace the part.
Replace Suction FAN.
Replace MAIN board.
Replace Power board.
Remove any
contact substances or foreign
.
substances
• If it is microvibration noise (which sounds
like tinnitus) during standby, tell the user
that it is the specification.
• If the above does not apply, replace the
following part(s):
• Power board
• MAIN board
• CR board
• Head
VJ628XE-M-00
Reference
"3.5.10Replacing MAIN Board
-
-
"3.5.10Replacing MAIN Board
"3.5.1Replacing Power Board
-
"3.5.1Replacing Power Board
"3.5.10Replacing MAIN Board
"3.8.4Replacing CR Board
3.8.15 Replacing Head
51