Wyse WY-60 Maintenance Manual page 104

Figure 7-3
316X-Style Keyboard PCB Schematic
4
3
o
c
B
CITR 21
NC~
LCLK Pl
24
Rl1 25
+Sv
Pl0 26
PI
RC; 27
10
23 vDD
P8 2 8
R
15
R4
24K :;>:~ f\)
PI'. '6
rTl-<
(»
C4
19 RC
al(J1 lJ PS 14
O.lu
orTl-
»
2
;:ogo
R4 13
_ C3
0 , _
I
0.00150.
(J1.£:,lJ
R3 '2
nlJJ
1
17 GND
»(J1
11
21
R2
2~
FTilJJ
PliO
R2 JJ
10
R(] 9
",>
ESC Fl F2 F3 F4 CTRL ERASE CTRL F 7 F8 F9 F'
c
8
/ /
/ /
/ /
/
(~1/
EOF
ILl-
/
/ /
·SV
-
C
VDD
RETURN
1/
RESET
F12/ SPACE
SHIF~
f~,
F6 A S F
2
,
/
/
;/
/
BA~/
/
C6
7
/
/
(R~
• C1
-
.-
~~Dl
C2
TA8 R
IN
E /
Q
PRIN
G
BACK T Y
U I
6
/
/
/
/
SPAo/
/
HZ6C2
O.1u
470u C5
/
GND
6.3v
*
(
)
-
+
PRINT
CLEAf;
!
(ci
H P
J'
4
8
9/
o /
-
/ ~/ Li N;/
2
S
/
/
/
,
1
,,"7
C4
+5V
SEND Z /
C X
V HOLD SHIFT SELEC $
DELEn
N E
C3 4
. /
/
/ /
/
(L) /
/
4
--/
D2
JUMF
r
~
'I,
<
-
lN914-~~
PAGE SEND HOME F13 7 r
J
en
R3
/
Li NE /
/
/
5
,
TAB F~
18
ro
c
3
3
D3
10
4 •
5~
6
~
1 -
2:
I
K
)
/\
>
- 8
A~
2
~
/
'-/
/
"-
)/
/
6
.
lN914B
Cl
/
"
•
,
f
1
,
&
?
I
0 ...
9-,
L
-
,-
ENT
+5V
.
,
~/
/ /
7 /
/
/
CO
1
/
/ /
D4
0 2
3 5 6
7
8 9
10
11
A"IN9148
1
4
DATA
P6
22 DATA
1
D5
10
~~IN9148
' *
DPLUS/ 3161 KEYBOARD 'D
IS
¢4¢5.¢6.'!>7
",>
NOTE: ALL KEyS ONLY SHOW TOP LEGEND.
NOTE:
I.THE UNIT OF RESISTANCE 'OHM' IS OMITTED (K-1000 OHMS AND M-1MEG OHM>.
2. ALL RESiSTORS ARE 1/4 WA TT UNLESS OTHERWiSE NOTED.
A
3.TH£
urm
OF CAPA.CITANCE 'uFO' IS OMITTED UNLESS OTHERWISE NOTED PF.
• 3
7-7