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A-IVI99
6.
BIAS
CURRENT ADJUSTMENT
(See
Top View on
Page
7)
1
Room
Temperature
18°C-28°C
3.
Before turning
ON
POWER
switch, turn
kVRI on
F-4387
fully
2.
For adjustment, run the
unit for
more
than
3
minutes
after
the
power
counterclockwise,
is
switched
on.
STEP
SUBIECT
MEASURE
OUTPUT
ADJUST
ADJUST
FOR
REMARKS
1
.
L-CH
Connect
DC
volt
meter
between
emitters of
kQ6,
kQ7
on
F-4387
kVRI
(L-CH)
F-4387
DC
3.3mV
This bias current
adjustment
converts current value
into
voltage
by
ohms
law
2.
R-CH
Same
as
above
kVRI (R-CHV
F-4387
DC
3.3mV
7.
MAIN PARTS REPLACEMENT
A.
Bonnet
(See
Fig.
7-1)
1
)
Remove
two
screws
SA.
2)
Push
the
rear side of
the
bonnet
to
remove
the
hooks and
then
re-
move
bonnet.
8.
PACKING
LIST
Parts
No.
Stock
No.
Description
1
09453300
Vinyl
Cover
2
47187620
Styrofoam Packing
3
47355200
Carton
Case
B.
Side Panel
L(R)
(See
Fig.
7-i
&
7-2)
1)
Remove
the
bonnet and two
screws
SB.
2)
Shift
the
position of
the
side
pane!
L(R)
1
.5
cm
in
the
arrow
direction.
3)
Remove
the
hooks
(2)
of the side
panel
from
front
panel
and
then
pull
it
to
the
arrow
direction
Q)
to
remove
the side panel
L(R)
(Fig.
7-2).
Fig.
7-2
Front
.Panel
(D
9.
ACCESSORY
LIST
Parts
No.
Stock
No.
Description
1
46797700
Operating
Instruction
SctnsTijL
SANSUl
ELECTRIC
CO., LTD.:
SANSUl ELECTRONICS CORPORATION:
SANSUI ELECTRONICS
(U.K.)
LTD.:
SANSUl ELECTRONICS
14-1, Izumi
2-chome,
Suginami-ku,
Tokyo 168 Japan
PHONE:
(031
324-8891
/TELEX:
232-2076
(Internationa! Division)
1250
Valley
Brook Ave. Lyndhurst,
N.J,
07071
U.S.A.
17150
South
Margay
Ave. Carson,
California
90746
U.S.A.
3306
Koapaka
5t.
Honolulu, Hawaii
96819
U.S.A.
Unit
10A, Lyon
Industrial
Estate,
Rockware Avenue,
Geenford,
Middx
UB6,
OAA,
England
Pau
Ehrich
Strasse
8,
6074
Rodermark
2,
West Germany
(SMI-112)
Printed
in
Japan
(930620M)
<
Stock
No.
36484400
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