Sansui G-3500 - Page 5

G-3500/301 epcioleeyeciey
G-4500/401 G-4500/401
2)
FM
STEREO
Adjustment
|
:
3-2.
AM
IF
Adjustment
&
Dial
Calibration
Note:
1.
Mode........
Ais
aecteir
Ae Wt
ody
was
Nena
meee
Bnet
Ae
PR
STEREO
|
Note:
1;
SelectOr
as.
k
SOS
we
Ww
BK
Re
AM
FEED
SIGNAL
MEASURE
:
ADJUST
ADJUST
FOR
REMARKS
STEr
SUBJECT
=
ROM
OUTPUT
J
J
1.
|
PLE
98
MHz
ANT
Input
65
dBf
|
Stereo
indicator
}VRO1
Light
indicator
Adjust
the
VRO1
(59.8
dB)
FM
SSG
F-2924
within
center
of
lighting level.
OO
VRO1
76
kHz
+150
Hz
~
F-2924 : ah
| EED SIG L MEASURE
STEP SUBJECT ADJUST U MARK
eee aoa 1. |IF Coil Tco4 —| TPOS TOS Max. IF
(34 dB) F-2924 F-2924 L10 waveform
F-2924
2. 600 kHz AM ANT | REC terminal T04
Dial L or R-CH F-2924
Calibration VTVM & Scope
1 Same as Same as above TCO4 | Same as above
Dial above F-2924
Calibration
F.2924 3. | 600 kHz 600 kHz ANT Input 50 dB Same as | Same as above Bar Same as above
RF Adj. 400 Hz (MOD 30%) AM SSG above Antenna
L07
, 2 ¢ ¢ ¥
Pilot 19 kHz (9% MOD)
SUB 1 kHz + Pilot
(100% MOD) STEREO SG
VCO Adj.
TPO4
F-2924
Use Freq.
Same as
above
counter
Same as REC terminal
above R-CH > L-CH
VTVM & Scope
TO3 VRO2 TO2 TPO2 VRO1 TPO4 TPO3 TCO3 LO3 TO1
98 MHz ANT Input 65 dBf
(59.8 dB) FM SSG
No mode
PLL
VCO Adj.
In case of using
Freq. counter
a |
|
98 MHz ANT Input 65 dBf -
(59.8 dB) FM SSG
Pilot 19 kHz (9% MOD)
R (or L) Mode 1 kHz + Pilot
(100% MOD) STEREO SG
Genescope |
Output level 70 dB
600 kHz ANT Input 60 dB
400 Hz (MOD 30%) AM SSG
Max. indication
on signal meter
1400 kHz ANT Input 60 dB
400 Hz (MOD 30%) AM SSG
1400 kHz
1400 Hz 1400 kHz ANT Input 50 dB Same as Same as above TCOS Same as above
~)
VY)
RF
Adj.
400
Hz
(MOD
30%)
AMSSG
___|
above
F-2924
y
|
4.
|
Signal
Meter
1000
kHz
ANT
Input
80
dB
Same
as__|
Signal
Meter
VRO4
4.5
on
meter
volume 400 Hz (MOD 30%) AM SSG above F-2924
o
3-3. Bias Current Adjustment (See the Picture of Top View on page 8)
°
°
1.
Confirm
AC
power
supply
voltage
(100
V,
120
V,
220
V
or
(Measure
output
voltage
on
both
channel)
DQ
240
V).
aa
C)
CG
C)
2.
Master
Volume
.........
2.220
e
ee
eeee
Minimum
TR15(&
16)
olt
meter
@
B
ae
|
|
3. Room
Temperature
..........02
00005
18°C
~
28°C
V~)?
eee
(65°F
~
83°F)
am
ee
T]
4.
Before
this
adjustment,
turn
bias
adjustment
volumes
of
VRO4
|
R77
(or
R78)
+
R79
(or
R80)
2
%
C)
and
VROS5
fully
counterclockwise,
then
run
this
unit
for
more
11
R77(&78)
2230
(
B
ID
than
three
minutes.
V
|
0.66
ne |
Note: For this adjustment, measure the voltage between the lead R79(&80) = UNE
+ (plus) side of R77 (R78) and the lead — (minus) side of .
S)
R79 (R80) on both channels.
Volt meter
TR17(&18)
VRO3
VRO4
TPOS
L11
L10
TOS
TO4
TO6
L12
TCO2
TCO1
TCO5
TCO4
LOT
LO2
TPO1
|
(Power
stage
on
F-2711)
*
NEW
MEASUREMENT
FOR
FM
*
The
relation
between
the
standard
input
65
dBf
of
IHFM-T-200
STEP
SUBJECT
EQUIPMENT
MEASURE
OUTPUT
|
ADJUST
ADJUST
FOR
Input
signal
level
under
the
provision
of
IHFM-1-200,
a
new
meas-
and
the
former
indication
“dB”
is
shown
below.
1
Bias
Current
DC
Volt
meter
*
See
above
VR0O4
10
mV
+1
mV
(15
mA)
urement
method
is
indicated
by
available
power
ratio
‘“‘dBf’’.
To
EM
SSG
65.8dB
ANT
Input
59.8dB
L-CH
F-2711
obtain
approximate
available
power
ratio
‘“dBf’’,
abstract
0.8
from
attenuator
indication
of
general
FMSG
(open
load
indication
type);
however,
the
conventional
measurement,
1HFM-T-100
is
designated
together
too.
The way of modulation on IHFM-T-200 is shown below.
modulation modulation modulation
frequency mode factor
1000 Hz aa 100%
FMSTEREO | 1000 Hz
10 mV +1 mV (15 mA)
Bias Current DC Volt meter * See above VRO5
R-CH F-2711
Pilot 9%
Pilot + SUB
100%