Oki B431L6

6. Procedures for Repairing
Oki Data CONFIDENTIAL
44983601TH Rev.1
6-17 /
Exhaust Fan Error (Error 120)
• Istheexhaustfanrotating?
• Yes Replacethemainboard.
• No Isthefanconnectorofthehigh-voltagepowersupplyunitconnectedtotheboardproperly?
•No Connectthefanconnectorappropriately.
• Yes Replacetheexhaustfanormainboard.
Duct Fan Error (Error 127)
• Istheductfanrotating?
• Yes Replacethemainboard.
• No Isthefanconnectorofthemainboardconnectedtotheboardproperly?
•No Connectthefanconnectorappropriately.
• Yes Replacetheductfanormainboard.
Power supply unit Fan Error (Error 128)
• Isthepowersupplyunitfanrotating?
• Yes Replacethemainboard.
• No Isthefanconnectorofthemainboardconnectedtotheboardproperly?
•No Connectthefanconnectorappropriately.
• Yes Replacethepowersupplyunitfanormainboard.