20 Most Recent Fujitsu fi-4340C Flatbed Scanner Questions & Answers

This can be because of the Fuser Unit or the Catridge and if you can see any mark on the rollers that means it needs to be replaced.

First go to this site: http://www.fujitsu.com/downloads/COMP/fcpa/scanners/fi-4340c_maint-guide.pdf and download Fi4340c PDF, look over directions on cleaning Pickup Rollers be careful with handling delicate plastic moldings. After a good cleaning Test Unit. Now left ADF unit back as to service and power off a minute or 2. This should reset and bring back the normal "ready" display.

check on feeder side assembly, there might loos contact on bulb or on bulb controller.

Hi,
Explanation:
Front Side Optical Alarm only generated when start command is received or when white level reference is checked (every 50 scans). CCD output must be above predetermined slice level when reading the white reference. Slice level is set in F/W and compared to the read range values. The read range is approximately pixel 120 to 4800. If CCD output does not reach slice level the AGC tries to adjust the output of the amplifier to exceed the slice level. If any portion of the read range is lower than slice then Optical Alarm is generated. Also, it can be generated by dirty optics or reference, bad lamp or CCD.

Resolution:

If "Front Side Optical Alarm" appeared, clean the glass (small and large one) of the flatbed and carrier unit.
If the issue persists, then check if CCD harness or CR cable is disconnected? Connect the connector.
If the issue persists, then replace Front lamp.
If the issue is not resolved, then replace the Control PCA or Carrier unit or Optical unit.

Pls acknowledge if the issue is resolved.

Regards,

Tech Satya

Hi,

Make a new scanner profile in the scanner settings to save in PDF format.

Pop open the cover and clean the rollers with alcohol. Your feed pad could be worn out also. Make sure the feed switch actuator is not sticking.