Tandy 1400LT Service Manual page 193

VII-2. RAM PCB Circuit Diagram
RAM
1M DRAM (256 X 4 B i t )
3c
4
(1. 3, 14, 15. 17)
22u
+u
1
C306
74HC08
I I
IC302
16c
UE
a E
+5v 3
-?-
I
I
IC303
I
74HC04
74HC04
1
Y
IC305
CJ08,
I I
vcc
GND
EDL-40
I ] IC306 1 6
1
5
8
0.01u 4
IC305
-
0.01u
74HC04
-IC305
11. 13: GND
IC300
306
R300
I
301
C300
. . ,
308
NO. 18
7-18