Z-9000X/7000X
2.
ADJUSTMENTS
2-1.
Reference
Frequency
Adjustment
of
Synthesizer
Control
Circuit
(See
F-3810
Parts
Location
on
Page
11)
Note:
1.
Input
Selector
...........c
cece
eceeeessccscceeeseeeeeeeeeeeeere
AM
Fig.
2-1
2.
TUNING/FM
MODE
........0.
MANUAL/MONO
3.
Remove
the
Front
Panel
Ass’y
and
Sub
Panel
Ass’y.
4.
The
frequency
with
““*’’
mark
is
for
the
unit
that
the
AM
9/10
kHz
channel
step
switch
(0826,
See
Fig.
2-1)
is
set
to
9
kHz
and
“**”
is
for
the
10
kHz.
5.
The
unit
without
the
AM
9/10
kHz
channel
step
switch
is
‘**’’
mark
frequency.
QkHz
1OkHz
F-3810
0826
AM
channel
step
sw.
Front
Panel
SUBJECT
SETTING
MEASURE
OUTPUT
ADJUST ADJUST
FOR
REMARKS
X’tal
Set
frequency
display
Between
eTP2
(eC29)
fTC1
*1449kHz
+
10Hz
Frequency
|
to
*999kHz
and
GND,
F-3806,
(F-3810)
<
**1450kHz
+
10Hz>
Adj.
<**1000kHz>
Frequency
Counter
2-2.
FM
Adjustments
(See
Fig.2-2,
2-4
and
Top
View
on
Page
17
and
18)
Fig.
2-2
Note:
1.
Input
Selector
........ccccecceesseseesseeteceeneeeeseeneees
FM
STEREO
SG
2.
CEM-IF
BAND.
bicissccecssndctsssuccsvscseseddeseeedtces
WIDE
3.
The
frequency
with
“*’’
mark
is
for
the
unit
that
the
AM
9/10
kHz
channel
step
switch
(0826,
See
Fig.
2-1)
is
set
to
9
kHz
and
‘’**”’
is
for
the
10
kHz.
4.
The
unit
without
the
AM
9/10
kHz
channel
step
switch
is
‘“**’’
mark
frequency.
1)
FMIF
Note:
1.
TUNING/FM
MODE............06
MANUAL/MONO
MEASURE
STEP
SUBJECT
OUTPUT
ADJUST
ADJUST
FOR
REMARKS
FM
IF
Coil
*9O8MHz
<**98.IMHz>
|
ANT
Between
Point
@
Tl
MAX.
Adj.
ANT
Input
20dBf
terminal
|
(dD1)
and
GND,
(Front-end)
DC
Volt
(14.8dB),
1kHz
3000
DC
Volt
Meter
(100%
MOD.),
FM
SSG
2.
|
Discriminator
|
1
|
*98MHz
Same
as
|
Between
dTP1
and
|
dT2
0+20mV
Coil
Adj.
<**98.1MHz>
above
dTP2,
Across
dR30
|
(F-3806)
ANT
Input
65
dBf
(F-3806),
(59.8dB),
1kHz
DC
Volt
Meter
(100%
MOD.),
FM
SSG
2
|
Same
as
above
Same
as_
|
REC
OUT
L-CH
or
|
dT3
Min.
THD
above
R-CH,
(F-3806)
VTVM
&
SCOPE,
Dist
Meter
3.
|
Signal
Level
*98MHz
<**98.IMHz>
|
Same
as_
|
SIGNAL
Indicator
dVR1
Make
only
one
or
Adj.
ANT
Input
15dBf
above
(F-3806)
LED
lighting
o
(9.8dB),
1kHz
?
(100%
MOD.),
FM
SSG
7
signal
@
Technical
Hint
for
FM
adjustment
e
There
are
two
kind
in
indication
of
FM
SG
output
attenuator.
e
The
following
table
shows
relations
among
FM
SG
attenuator
in-
1.
Attenuator
with
marking
of
75Q
open...........
open
indication
dication
(dB),
available
power
ratio
(dBf)
and
antenna
terminal
type.
voltage
(dB/zV)
in
each
indication
type.
2.
Attenuator
with
marking
of
750
load
or
close
............4.
load
or
close
indication
type.
FM
SG
Available
Antenna
*
FM
SG
output
level
in
this
FM
adjustment
are
described
as
open
Attenuator
|
Power
Terminal
indication
type.
Indication
Ratio
Voltage
©
To
feed
FM
signal,
a
dummy
antenna
circuit
as
Fig.
2-3
must
be
si Oe
ows
0
dB
—0.8
dBf
|
—6
dB/nV
connected
between
FM
SG
output
and
ANT
terminal
(3009)
of
the
Open
indication
type
66
dB
65.2
dBf
60
dB/pnV
nt
:
Load
or
close
O
dB
5.2
dBf
0
dB/uV
Fig.
2-3
indication
type
60
dB
65.2
dBf
60
dB/zV
Dummy
antenna
