Onkyo TX-7430 - FM Section; AM Section

FM section
Con
nec rion Stereo m odu-
Tumin g dial
Item Step FM SG ou tput
Output indicat or
Adju
stm ent
Adju s
of instrurn ent lator output settin g
Fig. I 99 .I MHz
I
-
DC v
oltrnet er
Ll OI OV
99 .I MHz
FM
I kHz, 75k Hz
devi.
IF
65dBf (60 dB)
2 Fig. I
-
Ll02 Mini mun
99 .I MHz
IDistor tion analyzer
I
99 .I MHz
L+ R: 1kHz
17.2d Bf (l2 dB)
I
Ligh t on
67.5kH z
devi,
E
xt. m odul ation
Ste reo
Fig. ;
f----
99. IMHz
S tereo indicato r
RI OI
level
99 .1MHz
Pil
ot signal :
2 16 .2dBf (11dB)
19k Hz
Light off
Ext.
modul ation 7.5k Hz devi.
99.lMHz
1kHz, 75kHz devi .
Fi
g.2
VCO - 99 .1MHz Frequen cy counter
R201 19kHz!
65dBf (60dB)
99.1MHz
Stereo
IF on
Fig. 3
65dBf (60dB) L or R eh. 1 kHz
99 .IMHz Distorti on analyzer
Minimu rr
Di
stortion
front end
Ext. m odulation
I
99.
IMHz
Lch . 1 kHz
Reh . AC voltmeter
Minimurr
Stereo
f----
65dB f (60dB)
Fig. 3
99
.IMHz
R20 2
S
eparation
2 E xt. m odul ation Reh . 1kHz
Lch . AC voltrneter
Minimurr
99 .l MHz
Hi-bl
end
35. 2dBf (30 dB)
Fig
.3
- 99.1MHz Hi-blend ind icator
RI 02 Light off
level
1kHz, 75k Hz devi ,
I
AM se ctio n
Step
AM SG
ou tpu t
Tuned
fre que
ncy
Ou
tput
indi cator
Adj ust ment
p oint
Adju st for
Remarks
I
5
22kHz
Digital DC
voltrneter
OSC o n
RF block
I.4V ! 0.1 V
2
1611kHz
Digital DC
votmeter
8.0 ± 1.0V
3
603kHz
400Hz 30% mod .
60dB /m
60
3kHz
AC
vo ltmeter
RF on
RF
block
Maximum
Repeat the steps 3 and 4
until no further adjustment
is
nece ssary.
4
14
04kHz
40
0Hz 30% mod .
60dB /m
140 4kHz
AC
voltrneter
TC on
RF
block
Maximum
5
99 9kH z
400 Hz 30% mod .
6
0dB /m
999k Hz
AC
vol trneter
XI51
I
I
Maximum
I
6
Same as above
999 kHz
First signal
indicator
RI
5l
Light on
Refer enc e spec if
Tun ed voltage E
1C
Auto stop level ,
i
AM
l OOP
A ;s: T
UNIT
OUTPUT
I
AC i
I VOl D IETER i
- 1 9-