Texas Instruments 990 User Manual

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945424-9701
KEYBOARD HOUSiNG
KEYBOARD
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PWB
INTERCONNECT ION
CABLE
DISPLAY UN IT HOUSING
I POWER/LOG IC
PWB
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KBDT1
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J 1-2
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J 1- 3
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KBDT3
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Jt-4
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>
J1-5
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>
Jl-6
>
KBDT6 ~
>---------------------------------------------------------7~Jl-6
Jl-7
>
>------------------------K __ B_D_T_7 ____________________________ >_.J1-7
J1-8
>
,,_ _______________________ K __ B_D_T_B ____________________________ )_.J1-8
J1-9
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KBSIN- ~
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J 1-10
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,
REPEAT- '
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(A)136259
Figure 1-11. Model 911 VDT Keyboard-to-Power/Logic PWB Signal Interface
DISPLAY UNIT HOUSING
INTERCONNECTION CABLE
VDT CONTROLLER
POWER/LOGIC \
PWB I
J2-3
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TET1T
> J4-31
Js-3 ')
Tt:'"T""I..,..
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IL- I .C:. I
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J2-4
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TRD1T ) VOTO
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J5-6J
J2-6
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(A;t 36260
Figure 1-12. Model 911 VDT Power/Logic PWB-to-VDT Controller Interface
1-20
Digital Systems Division

Texas Instruments 990 Specifications

General

Brand	Texas Instruments
Model	990
Category	Desktop
Language	English