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F-7 Series
Service Manual
33 pgs3.55 Mb0

Pioneer F-7 Series, F-7 KU, F-7 S, F-7 S/G, F-7 HE Service Manual

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12.
12.1
o o
AJUSTE
SECCIôN
Conectar el antena Poner
artificial de 300
el conmutador
DEL
generador
selector de modo de comprobaciôn del nivel de
SINTONIZADOR DE FM
de sefrales de
FM al
terminal
ohmios.
FM en
de
sintonizaciôn
grabaci6n
posiciôn
la
(REC
ON, el
(TUNING
LEVEL CHECK) en
de 300 ohmios de
selector de modo
MODE) en
la
(MODE)
posiciôn
posici6n
la
la antena
en la
de FM
posiciôn
MANUAL, y el
OFF.
a través de
MONO,
interruptor
I
la el
de
Generador
(400
Paso
Frecuencia
1 2 Reactiva 3
Repetir los
4
9O
5
90 6 tO6 7 106
Repetir los
I
9
90
10 Reactiva
11
98,000 MHz*
12
13 Repetir
Poner
14
de
Hz, +75 KHz
Reactiva
pasos
MHz
MHz MHz MHz
pasos
MHz
pasos
los
el selector de modo de
de
seôales
de dewiaciônl
Nivel
hasta
1 V 2
20
dB 20 dB 20
dB 20 dB
4 al I hasta
20 dB
66 dB
al
10
12 hasta
FM
Indicador
frecuencies
87,50
108,00
que
ambas especificaciones
90,00 90,00
106.00
106.00
lograr
la
mâxima
90,00
98,00
que
ambas especificaciones
sintonizaciôn
de
MHz MHz
MHz
MHz MHz MHz
sensibilidad.
MHz
MHz
(TUNING
Punto
de
aiuste
L1 7 V
TC3
sean correctas.
T1
T2
TCI TC2
T3
T4-N
TC6
T4.D
sean correcras.
MODE)
en
entre
CC
25 V CC entre
Aiustar
hasta
de
tierra sea el
Ajustar
hasta
de
tierra sea el
0 V
entre
CC
Ajustar hasta esté
minimo.
al
laposici6n
AUTO.
Especif
icaciôn del ajuste
el terminal no.
el terminal no. 13
que
la
tensiôn
mâximo,
gue
la
mâximo.
el terminal no.
que
la
de
tensiôn de CC entre
dislorsiôn en
13 y no. 14
no.
v
CC
entre
18 y no.
17.
el terminal de
(toma
de
(toma
14
de
el terminal
el terminal no.
salida
tierra).
tierra).
no.
(OUTPUT)
19 y toma
y
toma
19
15
16
MHz
98
La
frecuencia
24 dB
80 dB
tiene
que
ser
98,00 MHz
precisa,
VR1
R29
Ajustar hasta
por
niveles
Cerciorarse (indicaciôn
Si no es asi.
debajo de los
de
de
extraer R29.
que
el circuito
que
puntos)
5
de silenciamiento
24 dB.
todos los indicadores
estén
iluminados
por
esté funcionando
de la
sefral
encima
de los80dB.
a
(SIGNALI
o
TCl
x/,l
@
TC4
@
T5
E6
@
TC5
E
g
âit
r+-olo
t@@@l
@
VR5
ll s 3
no 18
tr
Points de réglage et de mesure
Front View with
(STEREO
*
LED
AE L.352
Push switch
* *
(REC
LEVEL
MODE) ASG-275
Tact
*
*
{UP,DOWN) ASG-1
73
Panel
CHECK,
Removed
(STATION}
*
LED
AEL-351
Tact
switch
(STATION ASG-151
CALL)
* Push switch
*
(MEMORY,TUNING ASG-267
LED
array
*
(srGNAL
1-5)
AEL354
* LED
array
IFM
AEL.353
Rear
Panel View
Connector
(FM
socket
7so)
AKP.O16
View
**
(ANTENNAI
(T1.25A
Furr AEK-O1
8
Terminal AKA-o14
Top
A
MODE}
A**
Fuse
AEK
(T
800mA
250V)
tltr_
** Push
ASG.l
LED numeric
AEL.355
Terminal
AKB077
A
Bar-antenna ATB€34
switch
74
(OUTPUT)
ps,,tæ,.
Ac ADG041
(FM,AM)
display
s.r6
assembly
*
*
Push
switch(POWER
ASG-532
Function switch
GWS-301
10
assembly
,fd'Jr"
I
Station
GWX-591
Tuner
assembly
GWE-145
crystal resonalor ASS-015
indicator
assembly
When
23
display) is
and drops
switched to the FM
(0
5)
controlling the 5th
|
held
low level
to a on/off to change display between
digit
at high
the 5th digit of
attd
"0"
impedance
at
"5". Q50, Q51
('5').
band, TC9137P
(
50kHz increment
'$rhen
switch
the
LED numeric
pin
"0",
."_,
nt
l||| t|l|
l|
n
Ll|
-t6 CYCLE
Smsl
l|
t|fll|fll|
ùts
I| 1|
PARTS
5.
Front Panel
Pillar
ANR.325
rsT
orctT
View
2NO OtGtT
3RD OIGIT 4TH
Fig.
LOCATION
NOlES: o
Parts
c
o
without
The
tt
safety
factor
designation.
your
For symbols **
GENERALLY MOVES FASTER THAN
This classification
No., temperature,
OIG IT
4-8 Frequency
part
marh
found
of
the
Parts Stoch Control,
**
ond *
disptay
number cannot
on sotne
part.
Therefore, when
be adiusted by each distributor because
shall humidity,
circuit
cornponent
etc.
Fig.4-7
be supplied.
replacing,
the
fast
Frequency
parts
indicates
mouing items are indicated
*
data
signal
the
be sure to use
importance of
it depends on
parts
identical
of
with
Knob AAD.332
the
the
model
(FM)
(REC
LEVEL CHECK, MODE,
MEMORY,
AAD-335
Hinge L
ANR-320
ANR-322 Knob
{UP,DOWN} AAD-337
Hinge
ANR.321
TUNING
R
MODE}
Top ANE-327
(STATION AAD-334
AAD.333
ANR-317
(POWERI
Knob
AAD.336
CALL)
ter
cover
(AM}
co\r€t
ASTAALS MULlIVIBRÂlOR
lÈ
Fig. 4-5
FM (AM)
Memory
Smory
M6). This causing memory
ponding
lilhen
a
signal
causes automatically memory 1 (STATION
Memory
The
is
located formers to
TC9137P
off (in
band, recall
address
applies
the broadcast
to
be indicator. the
band
from
to
Q28
Hold
power
in
(Fig.
even
STANDBY position).
Memory store/call
is
pins
tuned
is the momentarily
goes
switch (ON/STANDBy)
the
second
a-6).
Power
after
indicator
by designating
between
a low
to
switched band
to
1).
the
continues
level
frequency
and
illuminates
between
switch
eome
the frequency
stage
of
continues
porver
circuit
one
14
and 1g
input
stored
FM
detection
on,
and
for
power
the
to
be
switch
to
of
to
the
in
the
corres-
and
circuit tuning
stored
the
trans_
supplied
is
tumed
flash.
the
(NI-l-
pin
that
AM,
in
F-7
TC9137P ha.s a
allowing it to condition indicator drives Ievel). input consumption 10pA.
set in level, memory when exùemal power unpluged), (C210) protects for
pins
the power inhibit
4.6
The synthesizer ception (TD6301P) display
During
either
9137P being between
timing cycle data line frequency
scan, switched sists of frequency data.
difference cy present
form (the ignored
Using converts coded parallel BCD
play.
This
pin
to
When the
STANDBY
TC9137P
contents
approximately
functions
Q39
and
33
cunent discharge
consumption.
prevent
to
FREOUENCY
frequency
to a 4
a
"0"
0/5
passed
TC9137P
signal
of
data
when
is
during
between
a 16
The
11 between
and
the
reception
in FM).
two strings
the
to
7-segment
set
(oscillations
tumed off,
function
(IÎi-H),
40
is held
goes
the
charge
to
go
34
to
convert
digit display.
FM
reception,
or
"5"
terminal (pin
through
lines (Fig.
power
moved
memory
bit
data
and
bits
of
lowest
frequency
decimal
binary
data.
selfcontained
its
all
power
position),
into
using
the contents
3
days.
prevent
into
from
this
from
DISPLAY
IC(TC913?P)
(10kHz
TD6g01p.
and
and one
4-7)
Up or
recall,
FM/AM.
binary
5
frequency
the
frequency
point
pulse
of
coded
This
decoder
functions
stopped,
all outputs
is activated
and during
to
level
a
switch
pin
an inhibit
minimum
supply
stored
IC
an inhibit
these
is
Q39
occurring.
CIRCUIT
display
the
b
the
increments).
28) is
TDGBO1p
data
is
transmitted
is
turned
DOWN,
or The data
code,
bits
present
band,
and
signals,
serial
data
and
inhibit
all inputs
by a low
this
of approximately
is
eut
40
status,
current.
is
cut
in
backup
stored
current
status
pins
turned
static
digit
bth
controlled
The consists
signal
on,
when
with
of reception
data
consists
reception
obtainable
in
bOkHz
the
data
is
decoded
output
function
to
set to
time,
off
goes
to
(AC
line
capacitor
in
memory
drain.
(H
can increase
off
uses
driver
LED
numeric
digit
displays
The
without
connection
line.
through
when
during
the
band signal con­11
frequen_
binary-coded
incremenb
TD6B01p
into
by
to the
a
static
locked,
level
polver
(placing
a low
holding
Also,
cord
When
level),
during
the re-
IC
TC
of
two
One
the
tuning
auto_
is
bits of
band
of the
in
the
BCD
the
dis_
I
L
I
Fig.
4-6
Memory
backup
circuit
4.
CIRCUIT DESCRIPTIONS
MAJOR
4.1 F-7 is a
The enced as
to a
follows:
Frequency
1. FM:
AM: Tuning
2.
o
Tuning
once
key
band,
AM UP or quency
o
Positioning AUTO causes mode. scans
and
at, mitting
strength.
o
Pressing unit
unit.
the
Memory
3.
o
to
Up into
o
A special station cut OFF. tuning
Indicators
4. .
Frequency numeric tuning
o
Signal indicator.
o
FM
o
flashing
A
in
is
o
STATION
o
FM
FUNCTIONS
PLL digital
crystal
87.5MHz 522kHz
is by an
DO\ryN
bands to
and
the
the
tuning a signal
to directly
6
memory.
the
tuned
is automatically
and strength
and
"memory
STEREO
oscillator.
Range
to 1602kHz
changes
50kHz
the
pressing
unit to
this
In
frequency
into any
STATION
the
and
FM
memory
at
\ttlhen
displayed
is
display.
four
band
AM
band
write"
indicators
recePtion
synthesized tuner
Its main functions
108.0MH2
to
or
UP
key
be
exceeding
tune
digiLs
is
DOWN
frequency
in
TUNING
mode,
6 AM
the
indicator,
FM
the
depressed
scanned.
the UP
go
power is
indicated
indicator.
the
into
the
band,
broadcast
a
CALL
frequency
a
to
frequencies
holds
Five
the frequency
time
made
by
digits
for AM
indicates
(preset) status'
(memory address).
indicator.
refer-
in 50kHz
9kHz stePs.
in
key. Pressing
1 step
band). Holding
MODE
or
with
the restored
by
(9kHz
causes the
DO\ilN
auto search
unit automatically
scan
station
prescribed
key
can
power
to
a ?-segment
used
are
tuning.
the LED
steps.
in
switch
key
tuning
stopping
trans-
level
causes
preset into
preset
be
of
supply
to the
station'
that
for
5-point
the unit
that
once
unit'
LED
are
the the the fre'
to
of
the
the
FM
is
FM TUNER
4.2 Front-End
The FM amplifier diodes
The
or.
maintain
to
The local thesizer signal, and
the
to comes cv).
lF Amplifier
This section
element (M5215L) current-limiting made (consisting of an detector,
Multiplex
This contains circuit,
automatic killer circuit,
The
does
or
noise
no
4.3 The
variable
2-ganged
The
thesizer
signal. the
oscillator
the
To
the
in
addition
controlled
all amplifier
front-end
(single
equivalent of a
the
local oscillator
stability
oscillator signal
circuit
the
variable
oscillator
the
and Detector
ceramic
is a single-stage
up of the
meter
and
Decoder
section
PLL
the
chopper
canceUer,
circuit,
and stereo
chopper
not establish
or distortion.
TUNER
AM
tuner
AM
capacitance
nin
tu
oscillator
local
circuit
resulting
The
variable
IC
capacitance
frequency
improve
built-in
a
has
to a
outPut
SECTION
uses a dual-gate MOS
stage),
and
resulting
capacitance
consists
limiter,
IF limiter
consists
system type
muting
type
SECTION
g
caPacitor.
and
strong
by
level.
and
3-ganged tuning capacit-
uses an
during strong
compared with
tuning
frequency
of
two
filters.
and
system
IF
FM
amplifrer,
drive).
of
switching
MPX
stereo
amplifier,
reception
switching
a signal,
section
bar
an
uses IC
diodes
signal
compared
tuning
diodes (tuning signal
(automatic
AGC
antenna
in
FET
FET
variable
output buffer amp
is input into the
diodes where
(or
ICs and
The
differential
the
IC
decoder,
auto
circuit
thereby
the
is
input
with
voltage
frequency).
reception
response
capacitance
signal reception.
reference
the
applied
voltage
(PA40O6-A),
indicator
where
and
is
tuning
first
second IC
signal
muting
equivalent
frequen-
two
stage
amplifier
stage
(PA3007-A)
quadrature
generator
pilot
selector,
control
circuit'
either
generating
(HA1138) and
the
into
reference
the
applied
is
it becomes
stability,
gain
control)
damping
the RF
to
RF
syn-
it be-
dual-
IC
is
and
signal
VCO
does
of a
syn-
to
coil,
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