Tandy 1400LT Service Manual page 124

@ Printer Interface
Check t h e c o n n e c t o r s a n d
c a b l e c o n n e c t e d t o
t h e p r i n t e r (CN9)
I
Check t h e
slRB
S i g n a l ( p r i n t e r s t r o b e )
TR26 : C o l l e c t o r ( C l o c k Mode)
3. 3 p s e c
.------
4. 77MHz
x
2. 2 p s e c .------ 7. 16MHz
I
P i n4 8- 5 5
of
GATE2
1
Check
GATE2 a n d TRl8-25.
TR27 a n d P i n 2 9
I
Check
GATE2 a n d TR27.
5-15