Q&A about VFS-D7 Fusion Splicer 

1>The screen is dark after starting machine and the level lamp on electrodes    

   doesn’t work after opening windshield.

Solutions:

1)  Check whether the electrical outlet is inserted.

2)  Check whether the fuse is broken, and then replace the broken one.                

            2> “Exhausted Battery” is displayed on the bottom of screen after starting

                    VFS-D7 and buzzer works continually. 

                Solutions:

                 If use battery, then replace the power supply.                

            3> The fiber can be reset as normal, but when setting gap, fiber is immovable 

                   on the screen and “Replace Fiber” is displayed on the screen.

                Solutions:

                1) Press “” to reset system.

                2) Raise the windshield, left and right clamps. The checking steps as follows:

                3) Check whether broken fiber exists.

                4) Check whether cleaved length is too short.

                5) Check whether fiber matches with V-groove.             

             4> The fiber can be reset as normal, but when setting gap, fiber moves 

backwards continually, “Replace fiber” are displayed on screen.

               Solutions:

                 Maybe there is too much dust on the lens of microscope, clean the aclinic

                 and upright lens with cotton swab until dust disappears, then try again.             

             5> The fiber can be reset as normal, but when setting gap,  “Replace fiber” is displayed on screen.

               Solutions:

               1) Press “” to reset system.

               2) Raise the windshield, left and right clamps. The checking steps as follows:

               3) Check whether broken fiber exists.

               4) Check whether cleaved length is too short.

               5) Check whether fiber matches with V-groove             

            6> When calibrating automatically, fiber moves up and down, the screen’s

         display stops at “Adjust core”.

               Solutions:

               1) Press “” to reset system.

               2) Check whether bare fiber is clean.

               3) Clean the dust of V-groove.

               4) Knock at the holder until fiber is impacted, then try again.              

             7>The fiber can be reset as normal, but when setting gap,  “Bad left fiber’s surface” is displayed.

      Solutions:

1)  Observe fiber picture in screen, if the quality of left fiber’s surface is bad，you can remake surface and try again.

2)  Observe fiber picture in screen, if the quality of left fiber’s surface is good,

  maybe the value of “Setting surface” is too small, you can increase it.

3)  After “Bad left fiber’s surface” is displayed, the screen becomes dark;

Make sure that windshield is covered well.

Raise windshield, check whether the reeds are distorting, and then manage it. 

8> When splicing the MM fiber, there is bubble in the process of arc.

      Solutions: The difference between fiber’s core and envelope’s refractive index   

               is too big. Operations as follows:

1)Consult MM fiber’s arc program set by factory and confirm.

2)Do arc test until “Moderate current” is displayed three times.

3)Splice MM fiber; if there is bubble then modify arc parameter.

Operations are as follows:

1)  Enter the menu of arc parameter.

2)  Increase the value of “Pre-fusion time” until no bubble.

3)  Decrease the value of “Pre-fusion current” if no bubble and fiber thins.