2 Troubleshooting Procedures
2.5Keyboard Troubleshooting
S T A R T
P e rfo rm ex te rn a l k ey b o ard c h e c k
(P ro ce d u re 1 )
D o e s th e e x tern a l
k ey b o ard fu n ctio n o k ?
Y es
P e rfo rm d iag n o stic c h e c k
(P ro c e d u re 2 )
N o
W a s a k e y b o a rd
p ro b lem d e te cte d ?
Y es
P e rfo rm co n n ec to r a n d
rep la c em e n t ch ec k (P ro c e d u re 3 )
R e p la ce sy stem b o a rd
E N D
N o
K e y b o a rd is n o t fa u lty . C o n tin u e
tro u b lesh o o tin g - refe r
to F ig u re 2 .1
Figure 2-4 Keyboard troubleshooting process
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
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