BK Precision 467 - Page 5

CONN. A
R22
s3, s4,
55,
sg
4.
Replace
screw on
front
right side
of
chassis.
5.
Insert
neon
bulbs Nl thru
NB
into
their
proper
lens cap. Refer to
tlre schematic
(F.ig.
3) and
printed
board layout
(Fig.
2) to
determine
comect
placement
of
bulbs.
6.
Replace
connectors
A and B
onto
printed
board.
7.
Place
printed
board onto
chassis
and
replace re-
taining nut and washer on
Function
switch
and
tighten.
CALIBRATION
Heater
Voltage
1.
Connect
Adapter
No.
3 to
output cable.
2.
Connect an
AC
voltmeter to
pins
1
and 14
of
adapter.
3.
Set voltmeter to the
l0-volt
range.
4.
Connect AC line
cord
of tester
into ll7
VAC
outlet and
set
Function
control to the SET-( P
position.
.
5. Set
HTR Range swttch to the 4-7
volt
position.
N2
N6
N3
Panel
-
Parts Location.
Replace
two screws
holding
line cord
and
output
cable
to
chassis.
Replace
four
scre$rs
holding
printed
board
to
chassis.
Replace all
knobs on
front
panel
controls.
Lower chassis
into
case
and replace
screw
and
washer on front
of case and
four
screws
and
rubber feet
on bottom of
case.
ADJUSTMENTS
6.
Adjust HTR
control to read
exactly 6.3
volts
on
external
AC
voltmeter.
7. Adjust
HTR Cal control
(R16)
on
printed
board
(see
Fig.
2
f.or
location)
so that
HTR
voltmeter
on
tester
(Red/B&W)
indicates
exacily 6.3
volts.
Tracking
Range
1.
Connect
Adapter No.
3
to
output
cable.
2. Connect a 100K, t/Z Watt
resistor
between
pins
2 arfi
13
of adapter.
3
12
sll
N7
Fig. 1.
Rear
View
of
Front
8.
9.
10.
11.