Wyse WY-60 Maintenance Manual page 113

Figure 7-4 Terminal PCB Schematic (Monitor/Power Supply),
page
3
of
3
4 3
f
MC1489
4
U25
6
5
1
TA
i-5V
+12V +12V
R18 Ul
~TO U1 PINg
12K
PIN13
1
~IN8
RESET
U PlN35
D7
8
07
Cl~220PF
06
11
D5
r-l 20pF
2661
D4
5
04
C14 ':"
UART
D3
2
D3
3
3
.220pF
RXD
U3
D2 1
02
TO
Sf
C15~
23
28
01
RTS
Dl
t5V
27
00
DO
K;
12 A8
AI
10
A9
R/W 1
A12
TO
Ul PIN
15
U22PINO
510
MODEM PORT
J1
KEYBOARD r-DRT
RJ.9
sv
} - - - - - - - - 1 > - - _ - - - - - - . f Y
o
c
8
A
':"
~
~
MC1489
4
• 3
7-13
l .