Texas Instruments 660 - Manual (Page 74)

5-14 Troubleshooting Procedures
Table 5-5 General Troubleshooting Procedures (continued )
M em o ry m a lfu n ctio n 1 . C h e ck if th e m em o ry m o d u le is in s erted
p ro p erly .
2 . R ep la ce th e m e m o ry m o d u le .
3 . R ep la ce th e m o th erb o a rd .
E x te rn a l k ey b o a rd o r P S / 2
m o u s e d o e s n ’t w o rk 1 . C h e ck if th e k ey b o a rd o r th e m o u s e a re
co n n ecte d p ro p e rly . C h e ck if th e Y -ca b le is
b ein g u s e d . P o w er o ff s y s tem firs t b efo re
p lu g g in g in th e d ev ice.
2 . R ep la ce th e k e y b o a rd o r m o u s e.
3 . R ep la ce th e m o th erb o a rd .
P C M C IA ca rd d o e s n o t w o rk 1 . C h e ck th e P C M C IA d riv e r in s ta lla tio n fo r
a n y IR Q o r IO a d d res s co n flicts .
2 . C h e ck if th e P C M C IA ca rd is in s erted
p ro p erly a n d a ll co n n ectio n s a re s et.
3 . R ep la ce th e P C M C IA ca rd .
4 . R ep la ce th e m o th erb o a rd .
M o u s e d o e s n ’t w o rk 1 . C h e ck if P S / 2 m o u s e d riv e r is p ro p e rly
in s ta lle d .
2 . C h e ck th e k ey b o a rd co n tro lle r ch ip fo r a n y
co ld o r lo o s ed s o ld e rin g .
3 . R ep la ce th e m o th erb o a rd .
S e ria l d ev ice d o es n o t w o rk 1 . If u s in g s eria l m o u s e, ch eck if tra ck b a ll
o p tio n is d is a b led u n d er C M O S S etu p .
2 . C h e ck if m o u s e d riv er is in s ta lled
p ro p erly .
3 . C h e ck if s eria l d ev ice is co n n e cted
p ro p erly .
4 . R ep la ce s eria l d e v ice .
5 . C h e ck th e I/ O co n tro ller ch ip o n th e
m o th erb o a rd fo r a n y co ld o r lo o s e
s o ld e rin g .
6 . R ep la ce th e m o th erb o a rd .
P a ra lle l d ev ice d o es n o t w o rk 1 . C h e ck if a ll co n n ectio n s a re p ro p erly s et.
2 . C h e ck if ex te rn a l d e v ice is tu rn ed o n .
3 . C h e ck I/ O co n tro lle r ch ip o n th e
m o th erb o a rd fo r a n y co ld o r lo o s e
s o ld e rin g .
4 . R ep la ce th e m o th erb o a rd .