Heathkit IM 104 Schematic 2

Page 1

NOTES: Ego] ES {1 A
AC

I. RESISTOR VALUES ARE IN OHMS IK=1,000, M=l,OO0,000I. ST Slfl 55,33 J
2. ALL RESISTORS ARE 1% PRECISION EXCEPT THOSE MARKED r__i____.;___________ I I I
WITH AN ASTERISK (*1, WHICH ARE 5%, OR WITH Two I ; "" """" " """ '1" """ " """ """""'I' -------- * ------- ---- ----- ~ --------- 1 ----- ----------------- .............. ..--...---..---....-..---_- _______
ASTERISKS I=I_<*J, WHICH ARE 10%. I *** I : I I 'I
: rec I NC I 0 0 I - I I.
3. CAPACITOR VALUES ARE IN IIF UNLESS MARKED OTHERWISE. I I j I I I a; - I ' I
: NC I NC a I 0 . -Q I I E
4. RESISTOR AND CAPACITOR NUMBERS ARE IN THE FOLLOWING I I I I I
GROUPS; I "C63 @"c ' ® -m- I >I< ., I
' m I I 05 :52, .02 O? I
I ,u? I I ® K M» M {H I I I
1- 10 PARTS ON THE SWITCH CIRCUIT BOARD. I I I 4:750 .1700 I
11 - 30 PARTS ON THE REAR CIRCUIT BOARD. I SWITCH I I ' * k I
31 - 50 PARTS ON THE FRONT CIRCUIT BOARD. I CIRCUIT I 1' I 233 I
I BOARD I E I fié I
5. ->>-THIS SYMBOL INDICATES A CONNECTION BETWEEN I * " I _~I> I
CIRCUIT BOARDS. I I. ® ® ® . I
- I I P .. @- I
6. >- THIS SYMBOL INDICATES A SOCKET CONNECTOR ON I . . r 993° DIES-3 I
THE FRONT PANEL. I :21 I
k ------------- fl ------- ---------*-------- --- - L :
7. X LETTERS OR SYMBOLS IN A Box INDICATE LOCATIONS f' """ """""-" ------ - ------------- In-I- -------- - ------------------ ....--..---.I-----..-..-__.._.._I ...... .I ...... I.----_I
ON THE CIRCUIT BOARDS. .
' ' _I
8. @THIS SYMBOL INDICATES A SCREWDRIVER ADJUSTMENT. -1
9. éTHIS SYMBOL INDICATES CLOCKWISE ROTATION OF + _
CONTROLS OR ADJUSTMENTS AS VIEWED FROM THE KNOB \/
END OF THE SHAFT.
10. SWITCHES 51 THROUGH 55 ARE GANGED ON A COMMON
SHAFT.
11. ALL SWITCHES ARE SHOWN AS VIEWED FROM THE FRONT.
12. REFER TO THE CIRCUIT BOARD X-RAY VIEWS FOR THE
PHYSICAL LOCATION OF PARTS.
13.*=IE*THIS SWITCH HAS NO WIRING CONNECTIONS TO IT -
AND IS USED ONLY FOR SWITCH INTERLOCK PURPOSES. .----I II
I r---h~ TOPOINT ® ON V V V V W
I I H FRONT CIRCUIT BOARD \ I \ I I W .. V V
SH'ELPI I MP 81 I34 32 33 B7 86 I as A1 IIAS V VAS VAT QT " V
I I View: A6 A2
' I I FU SEHOLDER . °°u
.- ---------------- IIII. ----- bD-u-d ..... dun-up-J-c- -----------------------
E CIRRECAURIT r v + - - i i ----- + ------- -----U--'---'---1-~---T ------ ---T------'--fl-------------_- '- *--------------I + ----T-----T -------
60:13 I '
1000- ,-~BATT I amp . {I I; 5.233.? III I
50 1 | SHIELD l I BOARD |
300--\ OfF /-.01 E I- -I gm I: i E
A . 33
40 I __.' | __ I I
100 . /_'.1 I g mt I 'F ESV I 33 I
as I T- ° I I w I
30 /---1 l l I ** '
I DZ: 51 I M: I
20 m I (-J ELK |' 3;: I
10".. -«-10A , I I I
10 I I I '
3- -100 I l I I
' ' $1 I ' I
1_.E_.. ._1000 I REAR I I I
as : I I I ->F> I I
a-fi/ \----x1 I F30 I I
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I . I I I
1-/ \---x10 I I I I
-20dB : 9912 I | I
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xm / OK \ x100 I ma I I I
X100K MK I I i I: J. I
n I Q9913 : II :
I I
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RANGE SWITCH ; R :3: I I
' - .I '
I 336 £=§f 3 I I
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I , :2: E3 . m I
SCHEMATIC OF THE I ° I1 aw , I
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HEATHKIT® : :ég .- : =)G> % * QT 02 E
I | In:
SOLID-STATE VOM I I I? I I I
MODEL lM-104 I I T I AI: .III III III: I
I I I I 4I7-Ira 4I7-II3 I
| mo . -I I . I
: [9000 I ->D>---1 I
I I I -I
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I I I; I 5 bI-I ® I
I ' I I TO FUSE I
, I . SHIELD I
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