Compal ACY25 series, Service Manual

Page: 136 / 175

Printer Port Troubleshooting
P e r fo r m e x te r n a l k e y b o a r d c h e c k
( P r o c e d u r e 1 )
S T A R T
D o e s th e e x te r n a l
k e y b o a r d fu n c tio n o k ?
P e r fo r m d ia g n o s tic c h e c k
( P r o c e d u r e 2 )
W a s a k e y b o a r d
p r o b le m d e te c te d ?
P e r fo r m c o n n e c to r a n d
r e p la c e m e n t c h e c k
( P r o c e d u r e 3 )
R e p la c e s y s te m b o a r d
E N D
Y e s
N o
K e y b o a r d is n o t
fa u lty . C o n tin u e
tr o u b le s h o o tin g -
r e fe r to F ig u r e 2 .1
N o
Y e s
Figure 6-8 Printer port troubleshooting process
Chapter
6-19