Fisher fm60 Service Manual
125955
45
CONTENTS
Functional
SDECITIICATIONS = cicvencagcnc
Cabinet & Chassis
PAS
Recommended
FIM
TUNEr
AM
Tuner
TROUDIE
Tuner
FrontEnd
Printed
Semiconductor
Key
Board
Antenna
Power
Tuned / Stereo
Tuner
SCHEMAlIC
AMRF
FM
MPX
PLL
Control
Static
FM
Pre
Auto / Manual,
Block
U16t
coc
dcscoanesudee
ALONG
ANGNMEN
SHOGUNG
P.C.Board
schematic
Circuit
Switch
Terminal
Switch
Printed
IF/FMIFICLA
Driver
Scalar
DIAGN:
IC
LA
IC
P.C.Board
Circuit
IC
Diagram:
Exploded
Test
Equipments
45454255.6s0r
csi
icsetcsesacasvdatns
GUIGG
Layout
Diagram
Board
3400
TC
IC
ST / MUTE
Parts
Lead
Identification
P.C.Board
P.C.Board
Indicator
Board
wnnsaticuscka
1260
Signal
9147
TD
6301
TD
6104 P Signal
pecans
convehuriase
kota
x05.
o5c4ce
Alignment
List
(Bottom
P.C.Board
Flow
AP
Signal
AP
IC
ales
phd
ais
one
ns
een
tugs
View
nhotaw
san
...........
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oredcewes
rete
ieee
........
Gaek
dwuenna
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ic
0.00
Glad
dan
ccc
ccc
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eda
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ancwerewshee
ed
aainaasaaeetes
aca
Veda
edn
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Singtel
Points.................0.......5.
c.s2ecsdickdecewetenacwdvcwe
...........
(Bottom
(Bottom
View)
(Bottom
.........
ensSie
Signal
Sianal
Flow
..........
Flow
Flow
Flow
BU
4013 B Signal
0...
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.......0...
View)
View)
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............
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..........
View)
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ahaa
een
2
anand
ts
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eee
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ence
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bane’
petnamatebimadateuleas
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Ve
3
4
5
6
6
7
8
9
9
10,11,12
eee
ence
eeneeeeees
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ce
eecevceveneues
ee
ceceececeuceues
13
14
14
14
ea a eee
ewe
enies
cence
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ne
eeeenees
eeeneeeneeueenannes
een e ne
enc
cee
eeaeeeeens
cere
eenenueens
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15,16
17,18
eneaes
eee
14
19
19
20
20
21
21
FUNCTIONAL
Three-tuned
Varactor
Diode
Control)
Operation
Preset
MIXER
Linear
Lw
&
>
fs)
et)
Function
Control
Lo
Low-pass
Filter
{Low
Noise
System) Circuit
Phase
Detect
Serial
eer
Transfer
Key
Input
LED)
—
T.
Phase
Output
jou
FET)
(MOS
E}
FM
Local
Local
Frequency
Prescaler
(Swaliow
Counters
Divide
OSC
Frequency
{Perfect
Preset
(Preset
Output
System}
Output
Control/PLL
Static
ec
Memory
Key,
Filter
nae
ta
Output
iF
28C930
AM
|
|
BLOCK
1
Linear
(Double-balanced
Mixer
"
0"
Digital
co
a
Phase
IC
LA1260}
iocai
Frequency
Function
ee
tal
Display
ee
Static
CNT
EEL
Counter
{Quadrature
Fitter
Output
DIGITAL
Control
Driver
Drive)
Display
Type
Display
DIAGRAM
LIMITER
&
iF
Detection)
SECTION
==
=a
Output
AM
OUTPUT
LW
MW
Function
FM
FM
MPX
AM/FM
SW.
(PLL}
Sw.
Circuit
+5V
+B
L
OUT
-
OUT
R
oe,
ee
FM
SECTION
26
dB
Quieting
Quieting
dB
46
Signal-to-Noise
Capture
Alt.
image
Spurious
iF
AM
Total
Total
Stereo
Sub-Carrier
Audio
AM
Usable
Ratio
Channel
Response
Response
Response
Suppression
Harmonic
Harmonic
Separation
Frequency
SECTION
Sensitivity
Selectivity
Ratio
Rejection
SPECIFICATIONS
Sensitivity
Mono
Sensitivity
Mono
Ratio
Mono
Stereo
(+300
Ratio
Ratio
Ratio
Distortion
Distortion
(19
Response
at
50
Mono
at
65
Mono
Stereo
(100
kHz/38
(20
Hz — 15
—
kHz)
dB
dBf
(100
(100
Hz/1
Quieting
Hz/1
H2/1
kHz/10
kHz)
kHz)
kHz/6
kHz/6
kHz)
kHz)
kHz)
1.2uV/13.17dBf
|
7.O2V/28.15dBf
65
dB
60
dB
2.0
dB
58
dB
46
dB
70
dB
70
dB
0.4
%
0.5
%
0.2/0.2/0.5
0.3/0.3/0.7
40/40/25
30/50
%
%
dB
dB
+0.1/-2.5dB
=
=
350nV/m
LW
1000
”V/m
GENERAL
Power
Power
Dimensions
Weight
Because
product
Requirements
Consumption
(W
(approx.)
its
products
designs
and
(50 Hz)
x D x H)
are
subject
specifications
to
continuous
without
notice
improvement,
and
without
Fisher
incurring
19
9
400 x 208x55
1.3
Corporation
any
obligation.
VAC
Watts
kg
reserves
the
mm
right
to
modify
CABINET
&
CHASSIS
EXPLODED
VIEW
cx4—&
2 <
CX3
-
PARTSLIST
|
O
mee
CA
CA2
CA3
CA4
CA5
CA6
CA7
CA8
CA9
CAi0
CAI1
CAi2
CA13
CA14
Part
No.
PACKING
131-6-2119-02130
131-6-3009-35490
131-6-3068-16840
131-6-4559-11200
131-6-9459-00300
141-6-1139-97013
141-6-1449-97400
141-6-2519-10019
ACCESSORIES
131-0-4012-00180
131-6-2719-10801
131-6-4519-15700
131-6-4559-10900
141-2-1729-00500
142-6-4119-32506
CABINET
141-2-1129-07001
141-2-4219-33101
131-2-6111-14200
A\
141-2-3229-48100
131-2-3229-48000
141-2-3119-22200
131-2-1801-16200
—131-2-5205-32400
131-2-4219-17100
131-2-1601-86200
~—-141-2-1659-33300
PARTS
3-9415-10300
CHASSIS
&
4-2369-74581
4-2369-74062
4-2579-71601
Bag
Bag
Pad
Patching
Serial
Rubber
Outer
Case
Poly
PARTS
FM
Bag
Guarantee
|
Manufacturing
Holder
Explanatory
Cover
Screw,
Bushing
Plug
Plug
Plate
Plate
Loop
Chassis
Leg
Cushion
Shaft
Knob
Button
Description
LIST
Polyethylene
Polyethylene-Exp.
Sheet
No.
Sheet
Band
Cor
Carton
Styrofoam
Cover
100
x
190
LIST
Antenna
Assy
Fan
Certificate
No.
Antenna
Booklet
PARTS
Top
Bind
Cord
Cord
Shield
Earth
Antenna
(Power
(Power
Switch
Hd.
(Line
Cord)
RCA
(Power
Cabinet
Knob)
Switch)
(Station
LIST
Tapping-B,
Supply)
+M3.0x8
Memory)
Sems
Q’ty
1
1
1
1
2
1
1
2
1
1
1
1
1
1
1
1
5
1
1
1
1
1
1
1
4
{
1
1
9
ae
eee
CA15
CA16
CA17
PCB1
PCB2
PCB3
PCB4
PCB5
CX1
CX2
CX3
CX4
CX5
CX6
NOTES:
1.
Parts
Description.
2.
Ordering
10
Part
No.
141-0-1129-05712
~141-2-1129-06711
131-2-1601-87900
131-2-5205-32400
131-2-6308-22200
141-2-1319-36101
141-2-1449-60604
141-2-1539-16801
141-2-1659-33400
141-2-1659-33500
141-2-1259-07100
141-2-1419-16731
P.C.B.
ASSY
141-0-1939-04690
141-0-1939-04700
141-0-1939-04710
141-0-1939-04720
141-0-1939-04730
SCREW
101-3-1303-00811
143-3-1902-60811
143-3-1903-00611
143-3-1903-00811
143-3-1903-01018
143-3-1902-60818
order
quantity
PARTS
PARTS
must
of
pcs.
Cabinet
Cabinet
Knob
Cushion
Filter
Window
Plate
Decorate
Decorate
Button
Button
Cover
Name
LIST
Tuner
Keyboard
Antenna
Power
Tuned/Stereo
LIST
Screw,
Screw,
Screw,
Screw,
Screw,
Screw,
contain
screws
Front
Assy
Front
(Up/Down
Dial
(Power)
Switch
(Function)
Switch
(Function
Bottom
Plate
P.C.B.
Assy
Switch
Terminal
Switch
P.C.B.
Ind.
Pan
Hd.,
Brazier
Hd.
Brazier
Hd.
Brazier
Hd.
Brazier
Hd.
Brazier
Hd.
Model
and
resistors
Description
Knob)
FM)
P.C.B.
Assy
P.C.B.
Assy
Assy
P.C.B.
Assy
+M3.0x8
Tapping-B,
Tapping-B,
Tapping-B,
Tapping-B,
Tapping-B,
Number,
must
+M2.6x8
+M3.0x6
+M3.0x8
+M3.0x10
+M2.6x8
Part
Number
be
multiple
Q’ty
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
8
2
5
2
2
and
of
Each
precaution
parts
list
wattage
the
and
supply
ing a component
tance,
Leakage-current
from
the
or
circuit
in
schematic
or
this
manual
identified
voltage
that
resistance
before
should
diagram
with
are
designated
measurements
returning
be
designate
,
use
the
PRODUCT
followed
compo
only
the
in
the
must
product
duri
repla
parts
to
SAFETY
ng
nents
cement
be
made
the
servicing.
in
which
parts
list
in
this
to
customer.
NOTICE
Components
safet
designated,
manual.
determine
y
that
can
identified
be
of
special
or
parts
exposed
with
the
significance.
with
the
parts
are
IEC
symbol
same
ratings
acceptably
When
A\in
the
replac-
of
resis-
insulated
following
The
e
Line
Accurately
e
Voltmeter
DC
e
Standard
e
Standard
e
Generator
IF
e
e
Stereo
RECOMMENDED
recommended
are
Voitmeter
1MQ)
AM
for
FM
for
Voltage
Signal
Signal
Signal
equipments
test
Isolation
Calibrated
(Hight
Generator
Generator
Scope
Generator
Transformer
AC
Impedance
TEST
e
e
e
e
e
e
EQUIPMENTS
completely
to
Multiplex
Antenna
Loop
Dummy
Frequency
Distortion
Oscilloscope
Antenna
test
Generator
AM
for
(300
Counter
Meter
and
ohm,
the
align
Balanced
Tuner:
Type)
for
FM
Note:
|
i}.
>.
é
:
ITEM
The
turning
as
in
S-CURVE
ALIGNMENT
FINAL
DETECTOR
ADJUST-
MENT
(MINIMUM
T.H.D.)
Note:
circuit
IF
FM
selectivity,
and
conventional
Connect
IF
level
TPO1
terminal.
capacitor
generator
Connect
Generator
Dummy
Antenna
Set
+2kHz.
1kHzto
deviation.
Setting
attenuator
for
|
almost
Itis
GENERATOR
utilizes
the
LC
circuits.
10.7MHz
Genescope
70dB
and
ground
Use
in
FM
Antenna
terminals.
Generator
Modulate
provide
Generator
60dByz.
FM
ALIGNMENT
FM
non-turnable
a
must
IF
output
terminal
to
5pF
series
output.
Signal
RFF
through
to
to
98MHz
to
+40kHz
output
TUNER
unnecessary
DIAL
aligned
be
Position
|
Radio
with
FM
with
with
level!
interference.
Minimum
Frequency.
Front
DIGITAL
|
FM
Display
Set
FUNCTION
—
to
SETTING
ceramic
precisely
Panel
98MHz.
to
ALIGNMENT
switch
Front
in
filter
non-
of
Counter
coil
which
to
center
the
Connect
Genescope
to
ground
Connect
Distortion
Analyzer
TUNER
adjust
FM
to
End
INDICATOR
establishes
TPO2
the
of
Radio
and
terminal.
Harmonic
to
OUT.
position.
perfectly
as
bandpass.
IF
the
bandpass,
filter
Adjust
IF
input
so
symmetrical.
Adjust
|
for
linearlity.
Note:
the
If
Harmonic
apporoved
value
adjust
the
value
the
adjusted.
PROCEDURE
FM
S-wave
that
FM
minimum
numerical
to
the
the
Front
as
smallas
range
insure
To
than
rather
Coil
1st
DET
DET
gain
form
2nd
and
becomes
Coil
value
an
appropriate
IFT
located
to
minimize
possible
can
Distortion
as
specifications,
FM
End
of
360°(degrees).
symmetrical
10.7MHz
to
(T02),
(T03)
best
of
be
not
inside
the
within
ae
:
;
}
Repeat
Note:
3.
FM
STEREO
SIGNAL
SEPARATION
CONTROL
Use a screwdriver
Step
CAUTION:
1
Connect
to
|
channel
Apply
with
(FM
FM
nals.
Main
from
Same
RIGHT
plastic
Coil
DET
FM
Antenna
19kHz
channel,
signal
1000Hz
LEFT
channel.
as
above
channel.
grip
This
personnel,
TO2)
Stereo
termi-
signal
sub
ON.
signal
for
for
all
precision
(FM
2
and
SG
ON.
adjustments.
high-fidelity
trained
DET
in
Coil
the
T03)
instrument
repair
optimum
until
Scope
VTVM
TUNER
Scope
VTVM
TUNER
transistor
of
alignment
and
AC-
to
RIGHT
OUT.
and
AC-
to
LEFT
OUT.
should
equipment
be
serviced
reached.
is
Adjust
output.
and
VRO1
for
only
printed
minimum
by
qualified
circuitry.
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