Heathkit IM-4180 - Page 41

Felt PTR TTSFY PIN MY PNY UT) DPBVARLD
201-299
PART
MOUNTED
ON
THE
CONVERTER
CIRCUIT
BOARD.
NG
SYMBOLS
ARE
USED
ON
THIS
SCHEMATIC
DIAGRAM.
2.
ALL
RESISTORS
ARE
1/4-WATT,
5%
TOLERANCE
UNLESS
OTHERWISE
on
To
MARKED.
|
__
nnn
—_9@—
3.
CAPACITORS
LESS
THAN
1
ARE
IN
uf
(MiCROFARADS).
|
dy
CAPACITORS
1
OR
GREATER
ARE
IN
pE
(PICOFARADS)
UNLESS
OTHERWISE
MARKED.
|
4.
THE
FOLLOWING
SYM
L
t
!
r]
t t
ad
CIRCUIT BOARD GROUND.
CHASSIS GROUND.
DC
VOLTAGE
MEASUREMENT
TAKEN
WI]
INPUT
VOLTMETER
FROM
THE
POINT
}
N i
ED TG CHASSIS
GROUND
WITH
NO
SIGNAL
INPUT,
vo
MAY
VARY
110%.
SIGNAL
INPUT
DC
VOLTAGE.
(SEE
PREVIOUS
NOTE.
}
he ar ce ee co os ne
CERCUIT
BOARD
CONNECTOR
PINS
AND
FEMALE
WIRE
JUMPERS
(~>
PIN,>—-FEMALE
CONNECTOR).
INDICATES
A
CLOCKWISE
ROTATION
OF
A
CONTROL.
V
—
Re]
CIRCUIT
BOARD
WIRE
CONNECTIONS.
WIRE
CALLED
OUT.
>>
i
INDICATES
A
CHASSIS-MOUNTED
COMPONENT.
(A)
BOLD
LETTERS
CORRESPOND
TO
TEST
POINTS
ON
THE
S
EMAT
G
CH
AGRAM
AT
WHICH
THE
WAVEFORMS
ARE
MEASURED.
|
vas
i
Aes
.
aoa
cise
ro
3300
DEVIATION
METER
SETUP
PROCEDURE
TO
OBTAIN
THE
WAVEFORMS
15
|
IS
AS
FOLLOWS:
K
ADJ.
am
AIBE
INPUT CARRIER FREQUENCY: 25 MHz
DEVIATION
FREQUENCY:
5
KHz.
toes
MODULATION
FREQUENCY:
1
KHz.
2200
44F
SIGNAL
TUNED
FOR
FUNDAMENTAL
FREQUENCY
(25
MHz)
ON
DEVIATION
METER
WITH
GAIN
CONTROL
SET
TO
PRODUCE
A
FULL-SCALE
METER
READING,
2.
CIRCUIT
BOARD
X-RAY
VIEWS
ARE
SHOWN
ON
ILLUSTRATION
BOOKLET
PAGE
12.
E MANUAL ON PAGE 62 AND 63.
ad
SEMICONDUCTOR
CHARTS
ARE
SHOWN
ON
PAGES
60-61.
8.
PUSHBUTTON
SWITCH
SW101
HAS
SEVERAL
SEGMENTS
(A
THROUGH
G).
SOME
OF
THE
SEGMENTS
ARE
2-PART,
ARE
NUMBERED
1-2-3
OR
4-5-6
AND
MAY
BE
SHOWN
IN
DIFFERENT
AREAS
OF
THE
SCHEMATIC.
01 1S SHOWN WITH ALL PUSHBUTTONS
T
et
SE a ee
Lt
ee eee