4 . Main L O G I C B O A R D - Tandy 1000 SL Technical Reference Manual

4 . Main L o g i c B o a r d
Removal
a .
Remove t h e
t o p
c o v e r .
b . u n p l u g
a l l
c a b l e s
and
remove
a l l
t h e a d a p t e r b o a r d s
from
t h e
s y s t e m .
c. Remove
t h e
power
s u p p l y .
d .
Remove t h e b a c k of t h e c h a s s i s by r e m o v i n g ( 2 )
screws a t
t h e
rear
o f t h e
computer
a n d p u l l i n g t h e b a c k o f t h e c h a s s i s
t o
t h e
rear
a n d down
t o clear
t h e ( 3 ) h o o k s
i n
t h e
bottom
o f
t h e c h a s s i s .
e. Remove s p r i n g c l i p f r o m volume c o n t r o l k n o b p o s t .
f . Remove t h e (11)
screws
h o l d i n g t h e m a i n
l o g i c
b o a r d i n
place.
g.
Remove
t h e
m a i n
l o g i c b o a r d b y c a r e f u l l y p u l l i n g s t r a i g h t
b a c k f r o m u n d e r t h e d r i v e s u p p o r t a n d o u t o f t h e c h a s s i s .
NOTE: WHEN REPLACING THE M A I N LOGIC BOARD, BE SURE THAT THE
VOLUME CONTROL KNOB POST SLIDES INTO THE VOLUME CONTROL
POT CORRECTLY.
4