Tandy 1400LT - RS-232 C Check

0 RS-232C Check
Check MOD/K
select signal
Pin44
of GATE3.
Check GATE31
Is a
low pulse-
available at
CS2
of TC8570P
Pin14
of IC35?
Is a clock suitable
for baud rate gene-
ration? 1.8432MHz
1
Check CTL3, R23,
R24,C48 and C49.
eck the transmission si
I
ow leve
"u
Check IC46 and IC48
(CTS,m, and CTSl2 signal)
5-2 1