Tandy 1400LT Service Manual page 113

P
Check t h e s i g n a l
from
I C 1 (pPD70108)
Check P i n 3 4 o f
GATE2 ( m : R O M
s e l e c t s i n n a l )
C h e c k IC2, IC3, CATEB,
IC15 a n d t h e e n t i r e
p e r i p h e r a l c i r c u i t r y
*
I f you need t o
c h a n g e ROM(IClS), p l e a s e p e e l o f f t h e
c o p y r i g h t
s e a l on
t h e t o p
of ROM, a n d p u t i t t o a
new
ROM
(IC15)
5-4