Heathkit HD 4040 Schematic 2

Page 1

SCHEMATIC OF THE
HEATHKIT®
TERMINAL NODE CONTROLLER
MODEL HD-4040

C

ITORS ARE 1/4EWATT, 5% AND ARE MARKED IN OHMS
M-1.000.000).

CITORS ARE IN LIF (MICROFARADS) UNLESS STATED OTHERWISE.

GATES A WIRE CONNECTION ON THE CIRCUIT BOARD.

:ATES CHASSIS GROUND. I
:ATES CIRCUIT BOARD GROUND. I
I
:ATEs A FEMALE (SOCKET) CONNECTION. I +5
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A5
:ATES A MALE (PLUG) CONNECTION. I WM
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:ATES A CONNECTION POINT. I 3; W m 4 IVE
I D 22 m m 5 A gym
:ATES A NO CONNECTION POINT. ' I in2 )3:
| r .3103 34:59 vs» ° [J27
I A 29 M VIA m H mm:
CATES SOCKET AND PIN NUMBER. I £05 m 12 2 434253
| in; 98313 NOVRAM
SUCH AS (1) OR 8 NEXT To A COMPONENT INDICATES A I i m:
m
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) 16 PIN PLUG. I D 3" n2 m
P I g 15 A3 m
I 16 PIN LUG. I 24% W 3
S 14 PIN PLUG. I m :-
I Am m
. I C Z-ZW m
SHADED AREAS IN THE POWER SUPPLY S PRIMARY CIRCUIT I N 25 P m
CAL FOR CONTINUED SAFETY. REPLACE THEM ONLY WITH I [fig FEE mm
THE SAME RATING OR WITH THE PROPER HEATH PARTS. I iim m m
I

Copyright © 1985

i-3334-01 Heath Company
A// Flights Reserved

Printed In the United Slales of America

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Page 2

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