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Tandy 1400LT Service Manual page 142

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User manual (86 pages)

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@ External Keyboard Check

Check if keyboard

connector is loose.

Check the keyboard

select signal

Pin17 of GATE4

I

(High: External)

I

I

Check GATE4

Replace the

eyboard contro

Check the keyboard

data Pin2 of CN2.

Check the keyboard

CLK Pin1 of CN2.

Check IC52 and IC53.

I

---

I

I

I

Check GATE4.1

5-33

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