Texas Instruments 990 Manual page 201

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945424-9701
TOOL
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13 12 II
14
IC3
2 3 4
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10
6
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9
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CRIB
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PARTS
LIST
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UNLESS OTitERWIS£ SPECIFIED ·
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AVAILABLE
3 EQUIVALENT COMPONOITS MAY IE
sua -
STITUTED
LOCATION MFG TYP DESCRIPTION
Ml~~l~o.
QTY
1.
4
?-1 3
1-1
15
16
17
18
lQ
20,21
22
23
24
Pl
P2-P4
TYPE"A"
TYPE"B"
L25
Tl
C934002
SN/4154
S;>;/5450B
6. 8K.!1..
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l.2Kl"l.
270.t'l..
150./l.
22n
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15 pfd
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15 p.fd
3, 57MHZ
+5V
9
Pl 13 12
Q
MICRO
SD-01 S:;S
PROCESSOR
40 Pl!\;
SD-20117
SOCKET
IC
SW-12077
JC
RESISTOR SW-12195
RESISTOR SW-11288
RESISTOR SW-10106
RESISTOR FP-10039
RESISTOR SD-20004
RESISTOR SW-10773
DIODE RW-10017
CAPACITOR
SW-10610
CAPACITOR SD-20181
CAPACITOR RW-10438
CAPACITOR RW-10382
Cf<YSTAL SD-2020 3
HOUSING-
SD-11534
PLASTlC
CONNECTOR SD-11568
CON?\ EC TOH SD-ll589
P.C. BOARD SD-015:;1
PANEL
SD-01552
MODULE IOOISD1A3S
MODULE l001SD2A3
L.E.D. SD-11576
D D D D D D D D
B B B B B B B B
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GROUNDING -
STUD -
90
1
I
I
2~5~
LOCK SWITCH
&
4 - SuPPLY
+s.o
:::0.25 VDC
&-
MEASURED AT CO='INECTOR
TERMINALS
CONNECTOR PlNS (MA TING
PORTION ONLY) ARE TO BE
REMOVED FLUSH WITH.
BODY OF CONNECTOR
WITHIN. 03},C' AS FOLLOWS
Pl - PINS 13, 24, 26
PZ - PINS 2, 5
P3 - PINS 2, 3
P4 - Pins 1, 3
"' "'
MICRO SWITCH
.. 90ltT, ILL U.S.A.
TIUSDRAl119' C:.0YEll1 A P1101"1UETAJIYITll AMJ llTME P'lttftll:TY
Df •CRO SllfCH, ,t, DIYJSICll Of MOEYHLL. TlllS IMAIPIK IS mDT
TllBEC:IWIEDlllll!ED•TllOUTTHEAP'P'IOVALDF.Clt0511TtH.
Figure F-11t. Japanese Katakana Keyboard Assembly Logic
Diagram and Contact Matrix
F-19/F-20 Digital Systems Division