EasyManua.ls Logo

Teleton TFS-70 - Page 3

Teleton TFS-70
6 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
(c)
Adjust
cores
of
T105
&
T1104
to
obtain
Figure
10.
ie
a
t.
at
Noise
Figure
10
Note:
1.
Take
the
height
of
A
&
A’
as
long
as
possible.
2.
Inequality
of
noise
(See
figure
11)
is
no
good.
Figure
11
FM
Tracking
Adjustment
(do
not
remove
the
tuner
cover.)
5-1
Measuring
Equipment
(a)
FM
Standard
Signal
Generator
(include
the
pad)
(b)
Output
Meter
(V.T.V.M.)
(c)
Oscilloscope
(d)
Distortion
Meter
(e)
Dummy
Load
82
50W
5-2
Preparation
of
Adjustment
(a)
Volume
----------
Max.
Mode
------------
FM
(b)
Measuring
connection
is
as
follows.
SP
82
3002
Pad
Pon
ee
Se
i
<
1252
'
|
502
FM
Standard
Signal
Generator
Z=5082
¢
Distor-
tion
Meter
0
9
tied
oa
sp.
OUT
Dummy
Load
Mod,
400Hz
75KHz
Dev.
SP.
OUT
82
Figure
12
(c)
TC101,
TC102,
TC103
and
TC104
position
are
as
follows.
@)
Figure
13
(d)
Set
VR201,
VR202,
VR203,
VROO5
and
VROO6
to
me-
chanical
center
position.
(e)
Set
Pre-Setter
to
MANUAL.
5-3
Adjustment
5-3-1
Adjustment
of
Local
Osc.
Circuit
(a)
Connect
@
terminal
of
Voltmeter
to
VROO7
2
terminal,
and
(-)
terminal
of
Voltmeter
to
chassis.
(b)
Set
tuning
to
max.
and
adjust
VROO5S
for
8V
Volt-
meter
scale.
(c)
Set
tuning
to
min.
frequency
and
adjust
VROO6
for:
1.5V
Voltmeter
scale.
(d)
Repeat
step
(b)
and
(c)
several
times.
When
step
(b)
and
(c)
match,
voltage
adjustment
is
finished.
(e)
Adjustment
of
tuning
circuit
Adjustment
Step
1
Frequency
(S.G.)
87.5
MHz
104.5
MHz
Freq.
Position
-Min.
frequency
Max.
frequency
Adjust
point
L102
Adjust
for
max.
output.
Repeat
step
1
and
2
several
times.
When
step
1
and
2
match,
adjustment
of
the
Local
Osc.
Circuit
is
ending.
5-3-2
Adjustment
of
Tuning
Circuit
Adjustment
Procedure
1
2
|
Frequency
(S.G.)
90
MHz
102MHz
V.C.
Position
90
MHz
Tuning
|
102
MHz
Tuning
Position
Position
Adjust
Point
T1101,
T102,
TC101,
TC102,
T103
TC103
Adjustment
of
Meter,
Muting,
Tape
Output
Circuit
Note:
Adjustment
of
Tape
Output
Circuit
should
be
done
after
MPX
adjustment.
6-1
Adjustment
of
Meter
(a)
Input
90
MHz
(Mod.
400
Hz,
22.5
kHz
Dev.)
32dB
(Att.
scale),
and
adjust
red
and
black
cores
of
T202
for
max.
Meter
scale.
(b)
Set
S.G.
Att.
scale
to
112dB,
and
adjust
VR202
for
8
meter
scale.
6-2
Adjustment
of
Muting
Circuit
Input
90
MHz
(Mod.
400
Hz,
22.5
kHz
Dev.)
32cB
(Att.
scale),
and
set
Muting
Switch
“ON”.
Turn
VR201
counterclockwise
to
end
(mute
the
output),
and
turn
clockwise
to
the
point
of
which
the
output
wave
appears,
then
set
the
point
of
which
turn
clockwise
slightly.
6-3
Adjustment
of
Tape
Output
Circuit
Input
90
MHz
(Mod.
400
Hz,
22.5
kHz
Dev.)
72dB
(Att.
scale),
and
adjust
VR203
for
45
mV
output
of
TAPE
OUT.
Note:
Insert
47k
ohm
resistor
to
TAPE
OUT
as
sus-
pected
load.
MPX
Adjustment
7-1
Measuring
Equipment
(a)
FM
Standard
Signal
Generator
(S.G.)
(b)
STEREO
Signal
Generator
(MPX
S.G.)
(c)
V.T.V.M.
(d)
Oscilloscope
(e)
Counter
(f)
Dummy
Load
82
50W
7-2
Preparation
of
Adjustment
(a)
Volume,
Balance
-----
Adjust
output
of
L
ch.
and
R
ch.
for
500mmW
(2V).
Mode
-----
FM
Others
-----
Same
as
procedure
1-2.
(b)
Measuring
connection
Is
as
follows:
SG
PILOT-?7.5kHz
Den
MAIN
+
SUB
be
-Wyo
wey
earned
ee
Ve
0d
67.5kHz
1
A
‘
‘.
Terrninal@
a
vem
ton
oe
ayy
Sut
pu
2CtOr
of
MPXK
70
Sw,
PILOT
10%
MAIN
45%
4%
Oo
Figure
14
(c)
Adjust
VR501
&
VR502
to
middle
position.
7-3
Adjustment
(a)
Set
S.G.
to
90
MHz
(L+R)
+
PILOT
32
GB.
(b)
Tune
set
to
90
MHz.
(c)
Adjust
Volume
&
Balance
for
500mmW
SP.
output
of
both
channel.
(d)
Select
(L+R)
of
MPX
S.G.
to
“SUB”.
(ST.
lamp
not
light.)
(e)
Adjust
VR501
for
max.
and
no-distortion
‘’SUB’’
wave-
form.
(f)
Set
MPX
S.G.
to
R
signal,
and
Output
Selector
SW.
to
L
ch.
(leakage
of
R
signal
appears
on
V.T.V.M.)
Then,
adjust
VR502
for
min.
leakage
of
R
signal.
(g)
Set
MPX
S.G.
to
L
signal,
and
Output
Selector
SW.
to
R
ch.
(leakage
of
L
signal
appears
on
V.T.V.M.)
Then,
confirm
that
the
leakage
is
within
2
dB
for
R-L.