Tandy 1400LT - Page 131

Check IC46 and IC48
(m,m, and DSRlZ signal)
I
I
Check the transmission
data
(TXD)
Pin 11 of IC35.
1
Check GATE3 and IC47
TXD,TXDlBA and TXDlZ signal
r
- 1
Check IC35,GATE3 and IC47
(m, RTS12A and RTSl2 signal)
Check SOAINT signal
Pin30
of IC35.
..
1
I Check IC35.1
r
I
1
Check the reception
data (RXD12)
I
Check the
connectors
and cable
for RS-232C
5-22