McIntosh MR-55, Инструкция по эксплуатации

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F
M
—
Generato
r
CW
—
Oscillato
r
98MC
—
7
5
K
C
50cp
s
90MC
-
CW-Oscillato
r Preferabl
y
Batter
y
Operated
.
Wit
h
Generato
r Se
t th
e
Leve
l a
t 98M
C
Increas
e
Over
,
al
l Gai
n
Wit
h
Externa
l Amplifie
r I
f Necessary
. The
n
Wit
h
CW-Oscillato
r a
t 90MC
. Measur
e
Hum
. The
n
Switc
h
t
o
Phon
o
an
d
Measur
e
Hu
m
Wit
h
Phon
o
Inpu
t
Shorte
d
Wit
h
1Mohm
.
Measur
e
Distortion
.
Liste
n
88-98-108MC
.
7
5
KC
. Deviatio
n
400cps
.
Decreas
e
FM-Generato
r Outpu
t fo
r 3
%
Distortion
.
Readin
g
o
f Generato
r The
n
I
s
Measur
e
o
f Overal
l Sen
-
sitivity
.
Increas
e
Generato
r Outpu
t Unti
l 1
Div
. o
r Sensitivit
y
Mete
r I
s
Reached
. Generato
r Outpu
t Readin
g
No
w
i
s
Measur
e
o
f Gai
n
i
n
R
F
an
d
I
F
Stages
.
Tune/Liste
n
F
M
—
Generato
r
98M
C
75KC
. Deviatio
n
400cps
.
AFC-Conrro
l Full
y
Clockwis
e
Distortio
n
Analyse
r
Audi
o
Outpu
t
R8
1
an
d
Uppe
r Slu
g
o
f T1
2
fo
r Cente
r o
f
FM-Mete
r
Var
y
Tunin
g
Kno
b
Unti
l FM-Mete
r Remain
s
Stationary
.
Fo
r Tun
e
an
d
Liste
n
Position
s
Wit
h
R81
, Brin
g
FM-Mete
r
to
Center
, Wit
h
Selecto
r Switc
h
i
n
Tun
e
Position
.
Decreas
e
Outpu
t FM-Generato
r Unti
l 3
%
Distortio
n
an
d
Nois
e
I
s
Found
. The
n
i
n
Liste
n
Position
, Adjus
t T1
2
fo
r Minimu
m
Distortio
n
an
d
Noise
.
Overal
l
Tun
e
F
M
—
Generato
r
Cente
r Freq's
.
88
—
108MC
.
7
5
KC
. Deviatio
n
50cps
.
Thr
u
Balu
n
to
Antenn
a
Input
, o
r
75ohm
Inpu
t
Wit
h
Termi
-
natin
g
Resistor
s
Oscilloscope
, Synchronize
d
to
Inpu
t Swee
p
Tes
t Poin
t
T
3
>
Uppe
r an
d
Lowe
r Slug
s
T
5
>
fo
r Bes
t Respons
e
Curv
e
Var
y
Freq
. Fro
m
8
8
t
o
108MC
. an
d
Follo
w
Wit
h
Tuner
,
fo
r Ges
f Respons
e
Curv
e
Ove
r FM-Band
. Giv
e
Specia
l
Attentio
n
t
o
96.3M
C
fo
r Interferenc
e
o
f 9 x
10.7MC
.
IF-Stri
p
Tun
e
C
W
—
Oscillato
r
10.7MC
.
Poin
t (R
)
(Pi
n
6-V3
)
Oscillato
r Couple
d
t
o
(H
) Thr
u
.0
! M
F
Condense
r an
d
Terminatin
g
-Resistance
.
V.T.V.M
.
Tes
t Poin
t
T
2
T
3
Uppe
r an
d
lowe
r Slug
s
T
5
fo
r Maximu
m
T
7
T
9
Defea
t AVC-Actio
n
a
t Poin
t J
(R36-R38
)
Loa
d
Transformer-Windin
g
No!
Unde
r Adjustmen
t —
wit
h
10Koh
m
Resisto
r
Front-En
d
Tun
e
SWEE
P
GENERATO
R
CW
—
Oscillato
r
Cente
r Freq's
.
88
—
108MC
.
9
0
an
d
105MC
.
Thr
u
Balu
n
to
Antenn
a
inpu
t o
r
75ohm
inpu
t
Wit
h
Termi
-
natin
g
Resistor
s
An
y
Suitabl
e
Injeclion
-
Poin
t
T
o
B
e
Use
d
a
s
90
—
105MC
, Marke
r Point
s
Oscilloscope
, Synchronise
d
to
Inpu
t Swee
p
FM-Tunin
g
Mete
r
Poin
t (G
)
( Pi
n
7-V
3
)
L
9
—
C1
8
—
L1
0
—
C19
: Fo
r Bes
t Response
,
Keepin
g
90—
1
05MC
. Marker
s
i
n
Corres
-
pondenc
e
Wit
h
th
e
9
0
—
I05MC
. Dia
l Point
s
L1
1
—
C23
: Fo
r Calibratin
g
th
e
Tune
r FM
-
Local-Oscillato
r t
o
9
0
—
105MC
. Dia
l Point
s
Adjustment
s
o
f LP-C18-L10-C1
9
an
d
L11-C2
3
Ar
e
Inte
r Related
, Therefor
e
Bot
h
Serie
s
o
f Adjustment
s
Shoul
d
B
e
Checke
d
an
d
Rechecked
.
Disabl
e
th
e
Oscillato
r Whe
n
Adjustin
g
L9-C18-L10-C1
9
Poin
t (E
)
(Pi
n
5-T12)
T12
: Lowe
r Slug
fo
r Man
.
R81
: For
FM-Tuning
- Mete
r Cente
r
TI2
: Fo
r FM-Tuning-Meie
r Cente
r
Groun
d
Poin
t F
(
Hig
h
Sid
e
R82
)
10.7M
C
Poin
t (C
)
(Pi
n
7-V12
]
Poin
t (D
)
(R70-C88
)
T1
1
: Lowe
r Slu
g
fo
r Max
.
Uppe
r Slu
g
fo
r Zer
o
10.4MC
.
T10
: Uppe
r Slu
g
fo
r Max
.
Lowe
r Slu
g
fo
r Max
.
Loa
d
Primar
y
Wit
h
1.5Kohm
Resisto
r
Loa
d
Secondar
y
wit
h
1.5Koh
m
Resisto
r
Limiters
,
Detecto
r
an
d
Audi
o
Tun
e
CW
—
Oscillato
r
10.7MC
.
Poin
t (A
)
(Pi
n
5
—
V9
)
Oscillato
r Couple
d
t
o
(A
) Thr
u
.0
1
M
F
Condense
r an
d
Terminatin
g
Resistor
,
V.T.V.M
.
Poin
t (B
)
(Pi
n
1-V11
)
R63
:
Fo
r
Max
.
100Koh
m
Resisto
r i
n
Serie
s
Wit
h
D.C
. Prob
e
o
f V.T.V.M
.
CIRCUI
T
UNDE
R
TES
T
POSITIO
N
O
F
SE
L
SW
.
SIGNA
L
GENERATO
R
FREQUENC
Y
A
T
SIGNAL-SOURC
E
REMARK
S
MEASURE
D
WIT
H
A
T
ADJUS
T
SIGNAL-OUTPU
T
REMARK
S
F.M
.
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