
LAUNCH X-631 Wheel Aligner Product Service Manual Table of contents 
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Measurement..........................................................................................................................................................................13 
Function Description...............................................................................................................................................................13 
Fast Test.................................................................................................................................................................................13 
Function Description...............................................................................................................................................................14 
Print Report ............................................................................................................................................................................14 
Help ........................................................................................................................................................................................14 
Exit..........................................................................................................................................................................................14 
Maintenance Guide.......................................................................................................................................................................1 
Summary ..................................................................................................................................................................................1 
Hardware..................................................................................................................................................................................1 
Probe rod cannot be switched on .............................................................................................................................................1 
Related Factors ........................................................................................................................................................................1 
Checking Sequence .................................................................................................................................................................1 
Incorrect Display after Switching On ........................................................................................................................................1 
Incorrect Display Content .........................................................................................................................................................1 
Related Factors ........................................................................................................................................................................1 
Check Sequence ......................................................................................................................................................................1 
Disorder Codes, Double-shadow..............................................................................................................................................1 
Related Factors ........................................................................................................................................................................1 
Check Sequence ......................................................................................................................................................................1 
No Backlight .............................................................................................................................................................................1 
Related Factors ........................................................................................................................................................................1 
Check Sequence ......................................................................................................................................................................2 
Battery cannot be Charged.......................................................................................................................................................2 
Related Factors ........................................................................................................................................................................2 
Check Sequence ......................................................................................................................................................................2 
The Working Time of Battery is Shorted...................................................................................................................................2 
Related Factors ........................................................................................................................................................................2 
Check Sequence ......................................................................................................................................................................2 
Abnormal CCD Light Dots ........................................................................................................................................................2 
The Light Dots cannot be Seen ................................................................................................................................................2 
Related Factors ........................................................................................................................................................................2 
Check Sequence ......................................................................................................................................................................2 
The Light Dots are Jumping .....................................................................................................................................................2 
Related Factors ........................................................................................................................................................................2 
Check Sequence ......................................................................................................................................................................2 
Key-press is faulty ....................................................................................................................................................................3 
Related Factors ........................................................................................................................................................................3 
Check Sequence ......................................................................................................................................................................3 
No Inclination Angle..................................................................................................................................................................3 
Related Factors ........................................................................................................................................................................3 
Check Sequence ......................................................................................................................................................................3 
Communication Fault................................................................................................................................................................3 
Communication Fault................................................................................................................................................................3