The fan on the left side of the chassis has either failed or is running slow. They do however get quite a lot of dust and c--p on them and that can slow them down. Remove the left side cover and clean the fan. If that does not cure it then a new one is required. The part number and description are: 43289101 OR-Motor-FAN(80). Any OKI dealer should be able to get it for you.
Answers & Comments
The fan on the left side of the chassis has either failed or is running slow. They do however get quite a lot of dust and c--p on them and that can slow them down. Remove the left side cover and clean the fan. If that does not cure it then a new one is required. The part number and description are: 43289101 OR-Motor-FAN(80). Any OKI dealer should be able to get it for you.