Heathkit IG-4505 - Page 45

Ge
QuEaTHEIT®
Page
45
TEST #3
Perform this test if you have a TIME OUT signal, but
no VOLTS OUT signal.
START
Set
the
TIME
OUT
switch
(SW1)
to
the
1
mS
Position.
YES
Is
there
a
1000
Hz
(1
mS)
signal
at
the
base
(B)
of
3?
|
NO
Perform
the
steps
in
TEST
#1.
YES
Is
the
voltage
at
C102
(or
hole
D
in
the
circuit
board)
NO
Check
D3,
D4,
D5,
D6,
C101,
C102,
R101,
and
approximately
120-150
volts?
T101.
YES
is
the
voltage
at
the
collector
(C)
of
O2
110
volts?
NO
Check
Z2D1,
R13,
and
the
associated
circuitry.
YES
Is
there
a
110
volt,
1000
Hz
signal
at
the
collector
(C)
No
Check
Q2,
03,
R12,
D2,
R11,
and
the
associated
of
Q3?
circuitry,
YES
Does
a
1000
Hz
signal
of
the
amplitude
indicated
by
Check
the
wiring
of
the
VOLTS
OUT
switch
(SW2}
the
VOLTS
OUT
switch
(SW2)
appear
at
the
VOLTS
|
NO
and
for
the
correct
value
and
installation
of
resistors
OUT
binding
posts?
R15
through
R22.
YES
The
VOLTS
OUT
function
of
your
Calibrator
appears
to
be
operating
properly.