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.