4
GF-450K7
3 ADJUSTMENTS AND CHECKS
ALIGNMENT PROCEDURES
3-1 TUNER SECTION
Use a screwdriver with a plastic or ceramic grip for all adjustment.
3-1-1 FM adjustment
1.Set the function switch to the FM position.
2.Connect the signal generator output through a 75 ohm dummy antenna to "ANT" on MAIN PCB.
3.Connect the oscilloscope to the speaker terminal.
4.Set the signal generator as listed in the alignment chart.
3-1-2 AM adjustment
1.Set the function switch to the AM position.
2.Connect the test loop antenna across the output of the signal generator.
3.Connect the oscilloscope to the speaker terminal.
4.Set the signal generator as listed in the alignment chart.
3-1-3 Turntable Section
1.Set the function switch to the PHONE position.
2.Connect the oscilloscope to the speaker terminal.
3.Use a HP-4005 record for all adjustment.
3-2 Adjustment and Test Points
Spec.
Limit
1
2
3
UNIT
z
H
K
0
1
-
/
+
5
2
5
d
n
E
w
o
L
z
H
K
0
3
-
/
+
0
3
7
1
d
n
E
h
g
i
H
z
H
K
5
-
/
+
5
5
4
m
/
v
u
B
d
8
5
2
5
z
H
K
0
0
6
m
/
v
u
B
d
8
5
2
5
z
H
K
0
0
0
1
m
/
v
u
B
d
8
5
2
5
z
H
K
0
0
4
1
m
/
v
u
B
d
4
6
8
5
z
H
K
0
0
6
m
/
v
u
B
d
4
6
6
5
z
H
K
0
0
0
1
m
/
v
u
B
d
4
6
6
5
z
H
K
0
0
4
1
05. I.F.Rejection(Max.Sens)
b
d
0
3
5
3
z
H
K
0
0
6
t
a
b
d
5
2
0
3
z
H
K
0
0
4
1
t
a
)
V
m
5
(
n
o
i
t
c
e
j
e
R
e
g
a
m
I
.
6
0
%
5
1
5
.
F
.
1
x
2
m
/
V
m
5
t
a
t
e
e
w
T
.
7
0
%
/
/
.
F
.
1
x
3
b
d
5
1
0
2
z
H
K
0
0
0
1
t
a
z
H
K
0
1
-
/
+
.
A
.
C
.
A
.
8
0
z
H
K
9
-
4
5
b
d
0
3
5
3
%
5
2
W
5
.
3
6
.
3
z
H
5
2
1
0
0
1
z
H
K
2
2
.
2
V
M
0
1
3
)
e
m
u
l
o
V
n
i
M
(
e
s
i
o
N
&
m
u
H
.
4
1
b
d
5
3
0
4
02. I .F
01. Tuning Range
ITEM
03. MAX. Sens.
04. Sen. For -20db S/N
09. Band Width -6db at 10% 1000khz Max Sens
10. A.G.C.(-10db) at 1000KHz 100db/m
11.T.H.D. 74db/m 30%MOD
12. Power Output at 10% THD 80%74db/m
13. Ferq. Resp. -Low
-6 db High
15. HUM Modulation 100db/m
:
D
E
V
O
R
P
P
A
:
Y
B
T
S
E
T
:
S
K
R
A
M
E
R
120 V UL model Tuner adjustments AM
Содержание GF-450K7
Страница 7: ...GF 450K7 MAIN PCB MAIN PCB...
Страница 8: ...GF 450K7 8 4 EXPLODED VIEWS AND PARTS LIST EXPLODE VIEW...
Страница 12: ...12 GF 450K7 MAIN PCB HP PCB AUX PCB MAIN PCB HP PCB AUX PCB MAIN PCB 5 PC BOARDS AND PARTS LIST...
Страница 14: ...14 GF 450K7 DISPLAY PCB...
Страница 16: ...16 GF 450K7 CASS PCB CASS PCB SWITCH PCB CASS PCB SWITCH PCB...
Страница 19: ...19 GF 450K7 CASS PCB TO MAIN PCB TO MAIN PCB TO MAIN PCB TO MAIN PCB TO DECK TO DECK...
Страница 20: ...20 GF 450K7 DISPLAY PCB TO MAIN PCB TO MAIN PCB TO MAIN PCB...
Страница 23: ...MAIN PCB GF 450K7 Micro Hi Fi system...
Страница 24: ...DISPLAY PCB GF 450K7 Micro Hi Fi system...